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See LICENSE file for details.\n\n/**\n * Package base64 implements Base64 encoding and decoding.\n */\n\n// Invalid character used in decoding to indicate\n// that the character to decode is out of range of\n// alphabet and cannot be decoded.\nconst INVALID_BYTE = 256;\n\n/**\n * Implements standard Base64 encoding.\n *\n * Operates in constant time.\n */\nexport class Coder {\n    // TODO(dchest): methods to encode chunk-by-chunk.\n\n    constructor(private _paddingCharacter = \"=\") { }\n\n    encodedLength(length: number): number {\n        if (!this._paddingCharacter) {\n            return (length * 8 + 5) / 6 | 0;\n        }\n        return (length + 2) / 3 * 4 | 0;\n    }\n\n    encode(data: Uint8Array): string {\n        let out = \"\";\n\n        let i = 0;\n        for (; i < data.length - 2; i += 3) {\n            let c = (data[i] << 16) | (data[i + 1] << 8) | (data[i + 2]);\n            out += this._encodeByte((c >>> 3 * 6) & 63);\n            out += this._encodeByte((c >>> 2 * 6) & 63);\n            out += this._encodeByte((c >>> 1 * 6) & 63);\n            out += this._encodeByte((c >>> 0 * 6) & 63);\n        }\n\n        const left = data.length - i;\n        if (left > 0) {\n            let c = (data[i] << 16) | (left === 2 ? data[i + 1] << 8 : 0);\n            out += this._encodeByte((c >>> 3 * 6) & 63);\n            out += this._encodeByte((c >>> 2 * 6) & 63);\n            if (left === 2) {\n                out += this._encodeByte((c >>> 1 * 6) & 63);\n            } else {\n                out += this._paddingCharacter || \"\";\n            }\n            out += this._paddingCharacter || \"\";\n        }\n\n        return out;\n    }\n\n    maxDecodedLength(length: number): number {\n        if (!this._paddingCharacter) {\n            return (length * 6 + 7) / 8 | 0;\n        }\n        return length / 4 * 3 | 0;\n    }\n\n    decodedLength(s: string): number {\n        return this.maxDecodedLength(s.length - this._getPaddingLength(s));\n    }\n\n    decode(s: string): Uint8Array {\n        if (s.length === 0) {\n            return new Uint8Array(0);\n        }\n        const paddingLength = this._getPaddingLength(s);\n        const length = s.length - paddingLength;\n        const out = new Uint8Array(this.maxDecodedLength(length));\n        let op = 0;\n        let i = 0;\n        let haveBad = 0;\n        let v0 = 0, v1 = 0, v2 = 0, v3 = 0;\n        for (; i < length - 4; i += 4) {\n            v0 = this._decodeChar(s.charCodeAt(i + 0));\n            v1 = this._decodeChar(s.charCodeAt(i + 1));\n            v2 = this._decodeChar(s.charCodeAt(i + 2));\n            v3 = this._decodeChar(s.charCodeAt(i + 3));\n            out[op++] = (v0 << 2) | (v1 >>> 4);\n            out[op++] = (v1 << 4) | (v2 >>> 2);\n            out[op++] = (v2 << 6) | v3;\n            haveBad |= v0 & INVALID_BYTE;\n            haveBad |= v1 & INVALID_BYTE;\n            haveBad |= v2 & INVALID_BYTE;\n            haveBad |= v3 & INVALID_BYTE;\n        }\n        if (i < length - 1) {\n            v0 = this._decodeChar(s.charCodeAt(i));\n            v1 = this._decodeChar(s.charCodeAt(i + 1));\n            out[op++] = (v0 << 2) | (v1 >>> 4);\n            haveBad |= v0 & INVALID_BYTE;\n            haveBad |= v1 & INVALID_BYTE;\n        }\n        if (i < length - 2) {\n            v2 = this._decodeChar(s.charCodeAt(i + 2));\n            out[op++] = (v1 << 4) | (v2 >>> 2);\n            haveBad |= v2 & INVALID_BYTE;\n        }\n        if (i < length - 3) {\n            v3 = this._decodeChar(s.charCodeAt(i + 3));\n            out[op++] = (v2 << 6) | v3;\n            haveBad |= v3 & INVALID_BYTE;\n        }\n        if (haveBad !== 0) {\n            throw new Error(\"Base64Coder: incorrect characters for decoding\");\n        }\n        return out;\n    }\n\n    // Standard encoding have the following encoded/decoded ranges,\n    // which we need to convert between.\n    //\n    // ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz 0123456789  +   /\n    // Index:   0 - 25                    26 - 51              52 - 61   62  63\n    // ASCII:  65 - 90                    97 - 122             48 - 57   43  47\n    //\n\n    // Encode 6 bits in b into a new character.\n    protected _encodeByte(b: number): string {\n        // Encoding uses constant time operations as follows:\n        //\n        // 1. Define comparison of A with B using (A - B) >>> 8:\n        //          if A > B, then result is positive integer\n        //          if A <= B, then result is 0\n        //\n        // 2. Define selection of C or 0 using bitwise AND: X & C:\n        //          if X == 0, then result is 0\n        //          if X != 0, then result is C\n        //\n        // 3. Start with the smallest comparison (b >= 0), which is always\n        //    true, so set the result to the starting ASCII value (65).\n        //\n        // 4. Continue comparing b to higher ASCII values, and selecting\n        //    zero if comparison isn't true, otherwise selecting a value\n        //    to add to result, which:\n        //\n        //          a) undoes the previous addition\n        //          b) provides new value to add\n        //\n        let result = b;\n        // b >= 0\n        result += 65;\n        // b > 25\n        result += ((25 - b) >>> 8) & ((0 - 65) - 26 + 97);\n        // b > 51\n        result += ((51 - b) >>> 8) & ((26 - 97) - 52 + 48);\n        // b > 61\n        result += ((61 - b) >>> 8) & ((52 - 48) - 62 + 43);\n        // b > 62\n        result += ((62 - b) >>> 8) & ((62 - 43) - 63 + 47);\n\n        return String.fromCharCode(result);\n    }\n\n    // Decode a character code into a byte.\n    // Must return 256 if character is out of alphabet range.\n    protected _decodeChar(c: number): number {\n        // Decoding works similar to encoding: using the same comparison\n        // function, but now it works on ranges: result is always incremented\n        // by value, but this value becomes zero if the range is not\n        // satisfied.\n        //\n        // Decoding starts with invalid value, 256, which is then\n        // subtracted when the range is satisfied. If none of the ranges\n        // apply, the function returns 256, which is then checked by\n        // the caller to throw error.\n        let result = INVALID_BYTE; // start with invalid character\n\n        // c == 43 (c > 42 and c < 44)\n        result += (((42 - c) & (c - 44)) >>> 8) & (-INVALID_BYTE + c - 43 + 62);\n        // c == 47 (c > 46 and c < 48)\n        result += (((46 - c) & (c - 48)) >>> 8) & (-INVALID_BYTE + c - 47 + 63);\n        // c > 47 and c < 58\n        result += (((47 - c) & (c - 58)) >>> 8) & (-INVALID_BYTE + c - 48 + 52);\n        // c > 64 and c < 91\n        result += (((64 - c) & (c - 91)) >>> 8) & (-INVALID_BYTE + c - 65 + 0);\n        // c > 96 and c < 123\n        result += (((96 - c) & (c - 123)) >>> 8) & (-INVALID_BYTE + c - 97 + 26);\n\n        return result;\n    }\n\n    private _getPaddingLength(s: string): number {\n        let paddingLength = 0;\n        if (this._paddingCharacter) {\n            for (let i = s.length - 1; i >= 0; i--) {\n                if (s[i] !== this._paddingCharacter) {\n                    break;\n                }\n                paddingLength++;\n            }\n            if (s.length < 4 || paddingLength > 2) {\n                throw new Error(\"Base64Coder: incorrect padding\");\n            }\n        }\n        return paddingLength;\n    }\n\n}\n\nconst stdCoder = new Coder();\n\nexport function encode(data: Uint8Array): string {\n    return stdCoder.encode(data);\n}\n\nexport function decode(s: string): Uint8Array {\n    return stdCoder.decode(s);\n}\n\n/**\n * Implements URL-safe Base64 encoding.\n * (Same as Base64, but '+' is replaced with '-', and '/' with '_').\n *\n * Operates in constant time.\n */\nexport class URLSafeCoder extends Coder {\n    // URL-safe encoding have the following encoded/decoded ranges:\n    //\n    // ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz 0123456789  -   _\n    // Index:   0 - 25                    26 - 51              52 - 61   62  63\n    // ASCII:  65 - 90                    97 - 122             48 - 57   45  95\n    //\n\n    protected _encodeByte(b: number): string {\n        let result = b;\n        // b >= 0\n        result += 65;\n        // b > 25\n        result += ((25 - b) >>> 8) & ((0 - 65) - 26 + 97);\n        // b > 51\n        result += ((51 - b) >>> 8) & ((26 - 97) - 52 + 48);\n        // b > 61\n        result += ((61 - b) >>> 8) & ((52 - 48) - 62 + 45);\n        // b > 62\n        result += ((62 - b) >>> 8) & ((62 - 45) - 63 + 95);\n\n        return String.fromCharCode(result);\n    }\n\n    protected _decodeChar(c: number): number {\n        let result = INVALID_BYTE;\n\n        // c == 45 (c > 44 and c < 46)\n        result += (((44 - c) & (c - 46)) >>> 8) & (-INVALID_BYTE + c - 45 + 62);\n        // c == 95 (c > 94 and c < 96)\n        result += (((94 - c) & (c - 96)) >>> 8) & (-INVALID_BYTE + c - 95 + 63);\n        // c > 47 and c < 58\n        result += (((47 - c) & (c - 58)) >>> 8) & (-INVALID_BYTE + c - 48 + 52);\n        // c > 64 and c < 91\n        result += (((64 - c) & (c - 91)) >>> 8) & (-INVALID_BYTE + c - 65 + 0);\n        // c > 96 and c < 123\n        result += (((96 - c) & (c - 123)) >>> 8) & (-INVALID_BYTE + c - 97 + 26);\n\n        return result;\n    }\n}\n\nconst urlSafeCoder = new URLSafeCoder();\n\nexport function encodeURLSafe(data: Uint8Array): string {\n    return urlSafeCoder.encode(data);\n}\n\nexport function decodeURLSafe(s: string): Uint8Array {\n    return urlSafeCoder.decode(s);\n}\n\n\nexport const encodedLength = (length: number) =>\n    stdCoder.encodedLength(length);\n\nexport const maxDecodedLength = (length: number) =>\n    stdCoder.maxDecodedLength(length);\n\nexport const decodedLength = (s: string) =>\n    stdCoder.decodedLength(s);\n","// Copyright (C) 2016 Dmitry Chestnykh\n// MIT License. See LICENSE file for details.\n\n/**\n * Package utf8 implements UTF-8 encoding and decoding.\n */\n\nconst INVALID_UTF16 = \"utf8: invalid string\";\nconst INVALID_UTF8 = \"utf8: invalid source encoding\";\n\n/**\n * Encodes the given string into UTF-8 byte array.\n * Throws if the source string has invalid UTF-16 encoding.\n */\nexport function encode(s: string): Uint8Array {\n    // Calculate result length and allocate output array.\n    // encodedLength() also validates string and throws errors,\n    // so we don't need repeat validation here.\n    const arr = new Uint8Array(encodedLength(s));\n\n    let pos = 0;\n    for (let i = 0; i < s.length; i++) {\n        let c = s.charCodeAt(i);\n        if (c < 0x80) {\n            arr[pos++] = c;\n        } else if (c < 0x800) {\n            arr[pos++] = 0xc0 | c >> 6;\n            arr[pos++] = 0x80 | c & 0x3f;\n        } else if (c < 0xd800) {\n            arr[pos++] = 0xe0 | c >> 12;\n            arr[pos++] = 0x80 | (c >> 6) & 0x3f;\n            arr[pos++] = 0x80 | c & 0x3f;\n        } else {\n            i++; // get one more character\n            c = (c & 0x3ff) << 10;\n            c |= s.charCodeAt(i) & 0x3ff;\n            c += 0x10000;\n\n            arr[pos++] = 0xf0 | c >> 18;\n            arr[pos++] = 0x80 | (c >> 12) & 0x3f;\n            arr[pos++] = 0x80 | (c >> 6) & 0x3f;\n            arr[pos++] = 0x80 | c & 0x3f;\n        }\n    }\n    return arr;\n}\n\n/**\n * Returns the number of bytes required to encode the given string into UTF-8.\n * Throws if the source string has invalid UTF-16 encoding.\n */\nexport function encodedLength(s: string): number {\n    let result = 0;\n    for (let i = 0; i < s.length; i++) {\n        const c = s.charCodeAt(i);\n        if (c < 0x80) {\n            result += 1;\n        } else if (c < 0x800) {\n            result += 2;\n        } else if (c < 0xd800) {\n            result += 3;\n        } else if (c <= 0xdfff) {\n            if (i >= s.length - 1) {\n                throw new Error(INVALID_UTF16);\n            }\n            i++; // \"eat\" next character\n            result += 4;\n        } else {\n            throw new Error(INVALID_UTF16);\n        }\n    }\n    return result;\n}\n\n/**\n * Decodes the given byte array from UTF-8 into a string.\n * Throws if encoding is invalid.\n */\nexport function decode(arr: Uint8Array): string {\n    const chars: string[] = [];\n    for (let i = 0; i < arr.length; i++) {\n        let b = arr[i];\n\n        if (b & 0x80) {\n            let min;\n            if (b < 0xe0) {\n                // Need 1 more byte.\n                if (i >= arr.length) {\n                    throw new Error(INVALID_UTF8);\n                }\n                const n1 = arr[++i];\n                if ((n1 & 0xc0) !== 0x80) {\n                    throw new Error(INVALID_UTF8);\n                }\n                b = (b & 0x1f) << 6 | (n1 & 0x3f);\n                min = 0x80;\n            } else if (b < 0xf0) {\n                // Need 2 more bytes.\n                if (i >= arr.length - 1) {\n                    throw new Error(INVALID_UTF8);\n                }\n                const n1 = arr[++i];\n                const n2 = arr[++i];\n                if ((n1 & 0xc0) !== 0x80 || (n2 & 0xc0) !== 0x80) {\n                    throw new Error(INVALID_UTF8);\n                }\n                b = (b & 0x0f) << 12 | (n1 & 0x3f) << 6 | (n2 & 0x3f);\n                min = 0x800;\n            } else if (b < 0xf8) {\n                // Need 3 more bytes.\n                if (i >= arr.length - 2) {\n                    throw new Error(INVALID_UTF8);\n                }\n                const n1 = arr[++i];\n                const n2 = arr[++i];\n                const n3 = arr[++i];\n                if ((n1 & 0xc0) !== 0x80 || (n2 & 0xc0) !== 0x80 || (n3 & 0xc0) !== 0x80) {\n                    throw new Error(INVALID_UTF8);\n                }\n                b = (b & 0x0f) << 18 | (n1 & 0x3f) << 12 | (n2 & 0x3f) << 6 | (n3 & 0x3f);\n                min = 0x10000;\n            } else {\n                throw new Error(INVALID_UTF8);\n            }\n\n            if (b < min || (b >= 0xd800 && b <= 0xdfff)) {\n                throw new Error(INVALID_UTF8);\n            }\n\n            if (b >= 0x10000) {\n                // Surrogate pair.\n                if (b > 0x10ffff) {\n                    throw new Error(INVALID_UTF8);\n                }\n                b -= 0x10000;\n                chars.push(String.fromCharCode(0xd800 | (b >> 10)));\n                b = 0xdc00 | (b & 0x3ff);\n            }\n        }\n\n        chars.push(String.fromCharCode(b));\n    }\n    return chars.join(\"\");\n}\n","(function(nacl) {\n'use strict';\n\n// Ported in 2014 by Dmitry Chestnykh and Devi Mandiri.\n// Public domain.\n//\n// Implementation derived from TweetNaCl version 20140427.\n// See for details: http://tweetnacl.cr.yp.to/\n\nvar gf = function(init) {\n  var i, r = new Float64Array(16);\n  if (init) for (i = 0; i < init.length; i++) r[i] = init[i];\n  return r;\n};\n\n//  Pluggable, initialized in high-level API below.\nvar randombytes = function(/* x, n */) { throw new Error('no PRNG'); };\n\nvar _0 = new Uint8Array(16);\nvar _9 = new Uint8Array(32); _9[0] = 9;\n\nvar gf0 = gf(),\n    gf1 = gf([1]),\n    _121665 = gf([0xdb41, 1]),\n    D = gf([0x78a3, 0x1359, 0x4dca, 0x75eb, 0xd8ab, 0x4141, 0x0a4d, 0x0070, 0xe898, 0x7779, 0x4079, 0x8cc7, 0xfe73, 0x2b6f, 0x6cee, 0x5203]),\n    D2 = gf([0xf159, 0x26b2, 0x9b94, 0xebd6, 0xb156, 0x8283, 0x149a, 0x00e0, 0xd130, 0xeef3, 0x80f2, 0x198e, 0xfce7, 0x56df, 0xd9dc, 0x2406]),\n    X = gf([0xd51a, 0x8f25, 0x2d60, 0xc956, 0xa7b2, 0x9525, 0xc760, 0x692c, 0xdc5c, 0xfdd6, 0xe231, 0xc0a4, 0x53fe, 0xcd6e, 0x36d3, 0x2169]),\n    Y = gf([0x6658, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666, 0x6666]),\n    I = gf([0xa0b0, 0x4a0e, 0x1b27, 0xc4ee, 0xe478, 0xad2f, 0x1806, 0x2f43, 0xd7a7, 0x3dfb, 0x0099, 0x2b4d, 0xdf0b, 0x4fc1, 0x2480, 0x2b83]);\n\nfunction ts64(x, i, h, l) {\n  x[i]   = (h >> 24) & 0xff;\n  x[i+1] = (h >> 16) & 0xff;\n  x[i+2] = (h >>  8) & 0xff;\n  x[i+3] = h & 0xff;\n  x[i+4] = (l >> 24)  & 0xff;\n  x[i+5] = (l >> 16)  & 0xff;\n  x[i+6] = (l >>  8)  & 0xff;\n  x[i+7] = l & 0xff;\n}\n\nfunction vn(x, xi, y, yi, n) {\n  var i,d = 0;\n  for (i = 0; i < n; i++) d |= x[xi+i]^y[yi+i];\n  return (1 & ((d - 1) >>> 8)) - 1;\n}\n\nfunction crypto_verify_16(x, xi, y, yi) {\n  return vn(x,xi,y,yi,16);\n}\n\nfunction crypto_verify_32(x, xi, y, yi) {\n  return vn(x,xi,y,yi,32);\n}\n\nfunction core_salsa20(o, p, k, c) {\n  var j0  = c[ 0] & 0xff | (c[ 1] & 0xff)<<8 | (c[ 2] & 0xff)<<16 | (c[ 3] & 0xff)<<24,\n      j1  = k[ 0] & 0xff | (k[ 1] & 0xff)<<8 | (k[ 2] & 0xff)<<16 | (k[ 3] & 0xff)<<24,\n      j2  = k[ 4] & 0xff | (k[ 5] & 0xff)<<8 | (k[ 6] & 0xff)<<16 | (k[ 7] & 0xff)<<24,\n      j3  = k[ 8] & 0xff | (k[ 9] & 0xff)<<8 | (k[10] & 0xff)<<16 | (k[11] & 0xff)<<24,\n      j4  = k[12] & 0xff | (k[13] & 0xff)<<8 | (k[14] & 0xff)<<16 | (k[15] & 0xff)<<24,\n      j5  = c[ 4] & 0xff | (c[ 5] & 0xff)<<8 | (c[ 6] & 0xff)<<16 | (c[ 7] & 0xff)<<24,\n      j6  = p[ 0] & 0xff | (p[ 1] & 0xff)<<8 | (p[ 2] & 0xff)<<16 | (p[ 3] & 0xff)<<24,\n      j7  = p[ 4] & 0xff | (p[ 5] & 0xff)<<8 | (p[ 6] & 0xff)<<16 | (p[ 7] & 0xff)<<24,\n      j8  = p[ 8] & 0xff | (p[ 9] & 0xff)<<8 | (p[10] & 0xff)<<16 | (p[11] & 0xff)<<24,\n      j9  = p[12] & 0xff | (p[13] & 0xff)<<8 | (p[14] & 0xff)<<16 | (p[15] & 0xff)<<24,\n      j10 = c[ 8] & 0xff | (c[ 9] & 0xff)<<8 | (c[10] & 0xff)<<16 | (c[11] & 0xff)<<24,\n      j11 = k[16] & 0xff | (k[17] & 0xff)<<8 | (k[18] & 0xff)<<16 | (k[19] & 0xff)<<24,\n      j12 = k[20] & 0xff | (k[21] & 0xff)<<8 | (k[22] & 0xff)<<16 | (k[23] & 0xff)<<24,\n      j13 = k[24] & 0xff | (k[25] & 0xff)<<8 | (k[26] & 0xff)<<16 | (k[27] & 0xff)<<24,\n      j14 = k[28] & 0xff | (k[29] & 0xff)<<8 | (k[30] & 0xff)<<16 | (k[31] & 0xff)<<24,\n      j15 = c[12] & 0xff | (c[13] & 0xff)<<8 | (c[14] & 0xff)<<16 | (c[15] & 0xff)<<24;\n\n  var x0 = j0, x1 = j1, x2 = j2, x3 = j3, x4 = j4, x5 = j5, x6 = j6, x7 = j7,\n      x8 = j8, x9 = j9, x10 = j10, x11 = j11, x12 = j12, x13 = j13, x14 = j14,\n      x15 = j15, u;\n\n  for (var i = 0; i < 20; i += 2) {\n    u = x0 + x12 | 0;\n    x4 ^= u<<7 | u>>>(32-7);\n    u = x4 + x0 | 0;\n    x8 ^= u<<9 | u>>>(32-9);\n    u = x8 + x4 | 0;\n    x12 ^= u<<13 | u>>>(32-13);\n    u = x12 + x8 | 0;\n    x0 ^= u<<18 | u>>>(32-18);\n\n    u = x5 + x1 | 0;\n    x9 ^= u<<7 | u>>>(32-7);\n    u = x9 + x5 | 0;\n    x13 ^= u<<9 | u>>>(32-9);\n    u = x13 + x9 | 0;\n    x1 ^= u<<13 | u>>>(32-13);\n    u = x1 + x13 | 0;\n    x5 ^= u<<18 | u>>>(32-18);\n\n    u = x10 + x6 | 0;\n    x14 ^= u<<7 | u>>>(32-7);\n    u = x14 + x10 | 0;\n    x2 ^= u<<9 | u>>>(32-9);\n    u = x2 + x14 | 0;\n    x6 ^= u<<13 | u>>>(32-13);\n    u = x6 + x2 | 0;\n    x10 ^= u<<18 | u>>>(32-18);\n\n    u = x15 + x11 | 0;\n    x3 ^= u<<7 | u>>>(32-7);\n    u = x3 + x15 | 0;\n    x7 ^= u<<9 | u>>>(32-9);\n    u = x7 + x3 | 0;\n    x11 ^= u<<13 | u>>>(32-13);\n    u = x11 + x7 | 0;\n    x15 ^= u<<18 | u>>>(32-18);\n\n    u = x0 + x3 | 0;\n    x1 ^= u<<7 | u>>>(32-7);\n    u = x1 + x0 | 0;\n    x2 ^= u<<9 | u>>>(32-9);\n    u = x2 + x1 | 0;\n    x3 ^= u<<13 | u>>>(32-13);\n    u = x3 + x2 | 0;\n    x0 ^= u<<18 | u>>>(32-18);\n\n    u = x5 + x4 | 0;\n    x6 ^= u<<7 | u>>>(32-7);\n    u = x6 + x5 | 0;\n    x7 ^= u<<9 | u>>>(32-9);\n    u = x7 + x6 | 0;\n    x4 ^= u<<13 | u>>>(32-13);\n    u = x4 + x7 | 0;\n    x5 ^= u<<18 | u>>>(32-18);\n\n    u = x10 + x9 | 0;\n    x11 ^= u<<7 | u>>>(32-7);\n    u = x11 + x10 | 0;\n    x8 ^= u<<9 | u>>>(32-9);\n    u = x8 + x11 | 0;\n    x9 ^= u<<13 | u>>>(32-13);\n    u = x9 + x8 | 0;\n    x10 ^= u<<18 | u>>>(32-18);\n\n    u = x15 + x14 | 0;\n    x12 ^= u<<7 | u>>>(32-7);\n    u = x12 + x15 | 0;\n    x13 ^= u<<9 | u>>>(32-9);\n    u = x13 + x12 | 0;\n    x14 ^= u<<13 | u>>>(32-13);\n    u = x14 + x13 | 0;\n    x15 ^= u<<18 | u>>>(32-18);\n  }\n   x0 =  x0 +  j0 | 0;\n   x1 =  x1 +  j1 | 0;\n   x2 =  x2 +  j2 | 0;\n   x3 =  x3 +  j3 | 0;\n   x4 =  x4 +  j4 | 0;\n   x5 =  x5 +  j5 | 0;\n   x6 =  x6 +  j6 | 0;\n   x7 =  x7 +  j7 | 0;\n   x8 =  x8 +  j8 | 0;\n   x9 =  x9 +  j9 | 0;\n  x10 = x10 + j10 | 0;\n  x11 = x11 + j11 | 0;\n  x12 = x12 + j12 | 0;\n  x13 = x13 + j13 | 0;\n  x14 = x14 + j14 | 0;\n  x15 = x15 + j15 | 0;\n\n  o[ 0] = x0 >>>  0 & 0xff;\n  o[ 1] = x0 >>>  8 & 0xff;\n  o[ 2] = x0 >>> 16 & 0xff;\n  o[ 3] = x0 >>> 24 & 0xff;\n\n  o[ 4] = x1 >>>  0 & 0xff;\n  o[ 5] = x1 >>>  8 & 0xff;\n  o[ 6] = x1 >>> 16 & 0xff;\n  o[ 7] = x1 >>> 24 & 0xff;\n\n  o[ 8] = x2 >>>  0 & 0xff;\n  o[ 9] = x2 >>>  8 & 0xff;\n  o[10] = x2 >>> 16 & 0xff;\n  o[11] = x2 >>> 24 & 0xff;\n\n  o[12] = x3 >>>  0 & 0xff;\n  o[13] = x3 >>>  8 & 0xff;\n  o[14] = x3 >>> 16 & 0xff;\n  o[15] = x3 >>> 24 & 0xff;\n\n  o[16] = x4 >>>  0 & 0xff;\n  o[17] = x4 >>>  8 & 0xff;\n  o[18] = x4 >>> 16 & 0xff;\n  o[19] = x4 >>> 24 & 0xff;\n\n  o[20] = x5 >>>  0 & 0xff;\n  o[21] = x5 >>>  8 & 0xff;\n  o[22] = x5 >>> 16 & 0xff;\n  o[23] = x5 >>> 24 & 0xff;\n\n  o[24] = x6 >>>  0 & 0xff;\n  o[25] = x6 >>>  8 & 0xff;\n  o[26] = x6 >>> 16 & 0xff;\n  o[27] = x6 >>> 24 & 0xff;\n\n  o[28] = x7 >>>  0 & 0xff;\n  o[29] = x7 >>>  8 & 0xff;\n  o[30] = x7 >>> 16 & 0xff;\n  o[31] = x7 >>> 24 & 0xff;\n\n  o[32] = x8 >>>  0 & 0xff;\n  o[33] = x8 >>>  8 & 0xff;\n  o[34] = x8 >>> 16 & 0xff;\n  o[35] = x8 >>> 24 & 0xff;\n\n  o[36] = x9 >>>  0 & 0xff;\n  o[37] = x9 >>>  8 & 0xff;\n  o[38] = x9 >>> 16 & 0xff;\n  o[39] = x9 >>> 24 & 0xff;\n\n  o[40] = x10 >>>  0 & 0xff;\n  o[41] = x10 >>>  8 & 0xff;\n  o[42] = x10 >>> 16 & 0xff;\n  o[43] = x10 >>> 24 & 0xff;\n\n  o[44] = x11 >>>  0 & 0xff;\n  o[45] = x11 >>>  8 & 0xff;\n  o[46] = x11 >>> 16 & 0xff;\n  o[47] = x11 >>> 24 & 0xff;\n\n  o[48] = x12 >>>  0 & 0xff;\n  o[49] = x12 >>>  8 & 0xff;\n  o[50] = x12 >>> 16 & 0xff;\n  o[51] = x12 >>> 24 & 0xff;\n\n  o[52] = x13 >>>  0 & 0xff;\n  o[53] = x13 >>>  8 & 0xff;\n  o[54] = x13 >>> 16 & 0xff;\n  o[55] = x13 >>> 24 & 0xff;\n\n  o[56] = x14 >>>  0 & 0xff;\n  o[57] = x14 >>>  8 & 0xff;\n  o[58] = x14 >>> 16 & 0xff;\n  o[59] = x14 >>> 24 & 0xff;\n\n  o[60] = x15 >>>  0 & 0xff;\n  o[61] = x15 >>>  8 & 0xff;\n  o[62] = x15 >>> 16 & 0xff;\n  o[63] = x15 >>> 24 & 0xff;\n}\n\nfunction core_hsalsa20(o,p,k,c) {\n  var j0  = c[ 0] & 0xff | (c[ 1] & 0xff)<<8 | (c[ 2] & 0xff)<<16 | (c[ 3] & 0xff)<<24,\n      j1  = k[ 0] & 0xff | (k[ 1] & 0xff)<<8 | (k[ 2] & 0xff)<<16 | (k[ 3] & 0xff)<<24,\n      j2  = k[ 4] & 0xff | (k[ 5] & 0xff)<<8 | (k[ 6] & 0xff)<<16 | (k[ 7] & 0xff)<<24,\n      j3  = k[ 8] & 0xff | (k[ 9] & 0xff)<<8 | (k[10] & 0xff)<<16 | (k[11] & 0xff)<<24,\n      j4  = k[12] & 0xff | (k[13] & 0xff)<<8 | (k[14] & 0xff)<<16 | (k[15] & 0xff)<<24,\n      j5  = c[ 4] & 0xff | (c[ 5] & 0xff)<<8 | (c[ 6] & 0xff)<<16 | (c[ 7] & 0xff)<<24,\n      j6  = p[ 0] & 0xff | (p[ 1] & 0xff)<<8 | (p[ 2] & 0xff)<<16 | (p[ 3] & 0xff)<<24,\n      j7  = p[ 4] & 0xff | (p[ 5] & 0xff)<<8 | (p[ 6] & 0xff)<<16 | (p[ 7] & 0xff)<<24,\n      j8  = p[ 8] & 0xff | (p[ 9] & 0xff)<<8 | (p[10] & 0xff)<<16 | (p[11] & 0xff)<<24,\n      j9  = p[12] & 0xff | (p[13] & 0xff)<<8 | (p[14] & 0xff)<<16 | (p[15] & 0xff)<<24,\n      j10 = c[ 8] & 0xff | (c[ 9] & 0xff)<<8 | (c[10] & 0xff)<<16 | (c[11] & 0xff)<<24,\n      j11 = k[16] & 0xff | (k[17] & 0xff)<<8 | (k[18] & 0xff)<<16 | (k[19] & 0xff)<<24,\n      j12 = k[20] & 0xff | (k[21] & 0xff)<<8 | (k[22] & 0xff)<<16 | (k[23] & 0xff)<<24,\n      j13 = k[24] & 0xff | (k[25] & 0xff)<<8 | (k[26] & 0xff)<<16 | (k[27] & 0xff)<<24,\n      j14 = k[28] & 0xff | (k[29] & 0xff)<<8 | (k[30] & 0xff)<<16 | (k[31] & 0xff)<<24,\n      j15 = c[12] & 0xff | (c[13] & 0xff)<<8 | (c[14] & 0xff)<<16 | (c[15] & 0xff)<<24;\n\n  var x0 = j0, x1 = j1, x2 = j2, x3 = j3, x4 = j4, x5 = j5, x6 = j6, x7 = j7,\n      x8 = j8, x9 = j9, x10 = j10, x11 = j11, x12 = j12, x13 = j13, x14 = j14,\n      x15 = j15, u;\n\n  for (var i = 0; i < 20; i += 2) {\n    u = x0 + x12 | 0;\n    x4 ^= u<<7 | u>>>(32-7);\n    u = x4 + x0 | 0;\n    x8 ^= u<<9 | u>>>(32-9);\n    u = x8 + x4 | 0;\n    x12 ^= u<<13 | u>>>(32-13);\n    u = x12 + x8 | 0;\n    x0 ^= u<<18 | u>>>(32-18);\n\n    u = x5 + x1 | 0;\n    x9 ^= u<<7 | u>>>(32-7);\n    u = x9 + x5 | 0;\n    x13 ^= u<<9 | u>>>(32-9);\n    u = x13 + x9 | 0;\n    x1 ^= u<<13 | u>>>(32-13);\n    u = x1 + x13 | 0;\n    x5 ^= u<<18 | u>>>(32-18);\n\n    u = x10 + x6 | 0;\n    x14 ^= u<<7 | u>>>(32-7);\n    u = x14 + x10 | 0;\n    x2 ^= u<<9 | u>>>(32-9);\n    u = x2 + x14 | 0;\n    x6 ^= u<<13 | u>>>(32-13);\n    u = x6 + x2 | 0;\n    x10 ^= u<<18 | u>>>(32-18);\n\n    u = x15 + x11 | 0;\n    x3 ^= u<<7 | u>>>(32-7);\n    u = x3 + x15 | 0;\n    x7 ^= u<<9 | u>>>(32-9);\n    u = x7 + x3 | 0;\n    x11 ^= u<<13 | u>>>(32-13);\n    u = x11 + x7 | 0;\n    x15 ^= u<<18 | u>>>(32-18);\n\n    u = x0 + x3 | 0;\n    x1 ^= u<<7 | u>>>(32-7);\n    u = x1 + x0 | 0;\n    x2 ^= u<<9 | u>>>(32-9);\n    u = x2 + x1 | 0;\n    x3 ^= u<<13 | u>>>(32-13);\n    u = x3 + x2 | 0;\n    x0 ^= u<<18 | u>>>(32-18);\n\n    u = x5 + x4 | 0;\n    x6 ^= u<<7 | u>>>(32-7);\n    u = x6 + x5 | 0;\n    x7 ^= u<<9 | u>>>(32-9);\n    u = x7 + x6 | 0;\n    x4 ^= u<<13 | u>>>(32-13);\n    u = x4 + x7 | 0;\n    x5 ^= u<<18 | u>>>(32-18);\n\n    u = x10 + x9 | 0;\n    x11 ^= u<<7 | u>>>(32-7);\n    u = x11 + x10 | 0;\n    x8 ^= u<<9 | u>>>(32-9);\n    u = x8 + x11 | 0;\n    x9 ^= u<<13 | u>>>(32-13);\n    u = x9 + x8 | 0;\n    x10 ^= u<<18 | u>>>(32-18);\n\n    u = x15 + x14 | 0;\n    x12 ^= u<<7 | u>>>(32-7);\n    u = x12 + x15 | 0;\n    x13 ^= u<<9 | u>>>(32-9);\n    u = x13 + x12 | 0;\n    x14 ^= u<<13 | u>>>(32-13);\n    u = x14 + x13 | 0;\n    x15 ^= u<<18 | u>>>(32-18);\n  }\n\n  o[ 0] = x0 >>>  0 & 0xff;\n  o[ 1] = x0 >>>  8 & 0xff;\n  o[ 2] = x0 >>> 16 & 0xff;\n  o[ 3] = x0 >>> 24 & 0xff;\n\n  o[ 4] = x5 >>>  0 & 0xff;\n  o[ 5] = x5 >>>  8 & 0xff;\n  o[ 6] = x5 >>> 16 & 0xff;\n  o[ 7] = x5 >>> 24 & 0xff;\n\n  o[ 8] = x10 >>>  0 & 0xff;\n  o[ 9] = x10 >>>  8 & 0xff;\n  o[10] = x10 >>> 16 & 0xff;\n  o[11] = x10 >>> 24 & 0xff;\n\n  o[12] = x15 >>>  0 & 0xff;\n  o[13] = x15 >>>  8 & 0xff;\n  o[14] = x15 >>> 16 & 0xff;\n  o[15] = x15 >>> 24 & 0xff;\n\n  o[16] = x6 >>>  0 & 0xff;\n  o[17] = x6 >>>  8 & 0xff;\n  o[18] = x6 >>> 16 & 0xff;\n  o[19] = x6 >>> 24 & 0xff;\n\n  o[20] = x7 >>>  0 & 0xff;\n  o[21] = x7 >>>  8 & 0xff;\n  o[22] = x7 >>> 16 & 0xff;\n  o[23] = x7 >>> 24 & 0xff;\n\n  o[24] = x8 >>>  0 & 0xff;\n  o[25] = x8 >>>  8 & 0xff;\n  o[26] = x8 >>> 16 & 0xff;\n  o[27] = x8 >>> 24 & 0xff;\n\n  o[28] = x9 >>>  0 & 0xff;\n  o[29] = x9 >>>  8 & 0xff;\n  o[30] = x9 >>> 16 & 0xff;\n  o[31] = x9 >>> 24 & 0xff;\n}\n\nfunction crypto_core_salsa20(out,inp,k,c) {\n  core_salsa20(out,inp,k,c);\n}\n\nfunction crypto_core_hsalsa20(out,inp,k,c) {\n  core_hsalsa20(out,inp,k,c);\n}\n\nvar sigma = new Uint8Array([101, 120, 112, 97, 110, 100, 32, 51, 50, 45, 98, 121, 116, 101, 32, 107]);\n            // \"expand 32-byte k\"\n\nfunction crypto_stream_salsa20_xor(c,cpos,m,mpos,b,n,k) {\n  var z = new Uint8Array(16), x = new Uint8Array(64);\n  var u, i;\n  for (i = 0; i < 16; i++) z[i] = 0;\n  for (i = 0; i < 8; i++) z[i] = n[i];\n  while (b >= 64) {\n    crypto_core_salsa20(x,z,k,sigma);\n    for (i = 0; i < 64; i++) c[cpos+i] = m[mpos+i] ^ x[i];\n    u = 1;\n    for (i = 8; i < 16; i++) {\n      u = u + (z[i] & 0xff) | 0;\n      z[i] = u & 0xff;\n      u >>>= 8;\n    }\n    b -= 64;\n    cpos += 64;\n    mpos += 64;\n  }\n  if (b > 0) {\n    crypto_core_salsa20(x,z,k,sigma);\n    for (i = 0; i < b; i++) c[cpos+i] = m[mpos+i] ^ x[i];\n  }\n  return 0;\n}\n\nfunction crypto_stream_salsa20(c,cpos,b,n,k) {\n  var z = new Uint8Array(16), x = new Uint8Array(64);\n  var u, i;\n  for (i = 0; i < 16; i++) z[i] = 0;\n  for (i = 0; i < 8; i++) z[i] = n[i];\n  while (b >= 64) {\n    crypto_core_salsa20(x,z,k,sigma);\n    for (i = 0; i < 64; i++) c[cpos+i] = x[i];\n    u = 1;\n    for (i = 8; i < 16; i++) {\n      u = u + (z[i] & 0xff) | 0;\n      z[i] = u & 0xff;\n      u >>>= 8;\n    }\n    b -= 64;\n    cpos += 64;\n  }\n  if (b > 0) {\n    crypto_core_salsa20(x,z,k,sigma);\n    for (i = 0; i < b; i++) c[cpos+i] = x[i];\n  }\n  return 0;\n}\n\nfunction crypto_stream(c,cpos,d,n,k) {\n  var s = new Uint8Array(32);\n  crypto_core_hsalsa20(s,n,k,sigma);\n  var sn = new Uint8Array(8);\n  for (var i = 0; i < 8; i++) sn[i] = n[i+16];\n  return crypto_stream_salsa20(c,cpos,d,sn,s);\n}\n\nfunction crypto_stream_xor(c,cpos,m,mpos,d,n,k) {\n  var s = new Uint8Array(32);\n  crypto_core_hsalsa20(s,n,k,sigma);\n  var sn = new Uint8Array(8);\n  for (var i = 0; i < 8; i++) sn[i] = n[i+16];\n  return crypto_stream_salsa20_xor(c,cpos,m,mpos,d,sn,s);\n}\n\n/*\n* Port of Andrew Moon's Poly1305-donna-16. Public domain.\n* https://github.com/floodyberry/poly1305-donna\n*/\n\nvar poly1305 = function(key) {\n  this.buffer = new Uint8Array(16);\n  this.r = new Uint16Array(10);\n  this.h = new Uint16Array(10);\n  this.pad = new Uint16Array(8);\n  this.leftover = 0;\n  this.fin = 0;\n\n  var t0, t1, t2, t3, t4, t5, t6, t7;\n\n  t0 = key[ 0] & 0xff | (key[ 1] & 0xff) << 8; this.r[0] = ( t0                     ) & 0x1fff;\n  t1 = key[ 2] & 0xff | (key[ 3] & 0xff) << 8; this.r[1] = ((t0 >>> 13) | (t1 <<  3)) & 0x1fff;\n  t2 = key[ 4] & 0xff | (key[ 5] & 0xff) << 8; this.r[2] = ((t1 >>> 10) | (t2 <<  6)) & 0x1f03;\n  t3 = key[ 6] & 0xff | (key[ 7] & 0xff) << 8; this.r[3] = ((t2 >>>  7) | (t3 <<  9)) & 0x1fff;\n  t4 = key[ 8] & 0xff | (key[ 9] & 0xff) << 8; this.r[4] = ((t3 >>>  4) | (t4 << 12)) & 0x00ff;\n  this.r[5] = ((t4 >>>  1)) & 0x1ffe;\n  t5 = key[10] & 0xff | (key[11] & 0xff) << 8; this.r[6] = ((t4 >>> 14) | (t5 <<  2)) & 0x1fff;\n  t6 = key[12] & 0xff | (key[13] & 0xff) << 8; this.r[7] = ((t5 >>> 11) | (t6 <<  5)) & 0x1f81;\n  t7 = key[14] & 0xff | (key[15] & 0xff) << 8; this.r[8] = ((t6 >>>  8) | (t7 <<  8)) & 0x1fff;\n  this.r[9] = ((t7 >>>  5)) & 0x007f;\n\n  this.pad[0] = key[16] & 0xff | (key[17] & 0xff) << 8;\n  this.pad[1] = key[18] & 0xff | (key[19] & 0xff) << 8;\n  this.pad[2] = key[20] & 0xff | (key[21] & 0xff) << 8;\n  this.pad[3] = key[22] & 0xff | (key[23] & 0xff) << 8;\n  this.pad[4] = key[24] & 0xff | (key[25] & 0xff) << 8;\n  this.pad[5] = key[26] & 0xff | (key[27] & 0xff) << 8;\n  this.pad[6] = key[28] & 0xff | (key[29] & 0xff) << 8;\n  this.pad[7] = key[30] & 0xff | (key[31] & 0xff) << 8;\n};\n\npoly1305.prototype.blocks = function(m, mpos, bytes) {\n  var hibit = this.fin ? 0 : (1 << 11);\n  var t0, t1, t2, t3, t4, t5, t6, t7, c;\n  var d0, d1, d2, d3, d4, d5, d6, d7, d8, d9;\n\n  var h0 = this.h[0],\n      h1 = this.h[1],\n      h2 = this.h[2],\n      h3 = this.h[3],\n      h4 = this.h[4],\n      h5 = this.h[5],\n      h6 = this.h[6],\n      h7 = this.h[7],\n      h8 = this.h[8],\n      h9 = this.h[9];\n\n  var r0 = this.r[0],\n      r1 = this.r[1],\n      r2 = this.r[2],\n      r3 = this.r[3],\n      r4 = this.r[4],\n      r5 = this.r[5],\n      r6 = this.r[6],\n      r7 = this.r[7],\n      r8 = this.r[8],\n      r9 = this.r[9];\n\n  while (bytes >= 16) {\n    t0 = m[mpos+ 0] & 0xff | (m[mpos+ 1] & 0xff) << 8; h0 += ( t0                     ) & 0x1fff;\n    t1 = m[mpos+ 2] & 0xff | (m[mpos+ 3] & 0xff) << 8; h1 += ((t0 >>> 13) | (t1 <<  3)) & 0x1fff;\n    t2 = m[mpos+ 4] & 0xff | (m[mpos+ 5] & 0xff) << 8; h2 += ((t1 >>> 10) | (t2 <<  6)) & 0x1fff;\n    t3 = m[mpos+ 6] & 0xff | (m[mpos+ 7] & 0xff) << 8; h3 += ((t2 >>>  7) | (t3 <<  9)) & 0x1fff;\n    t4 = m[mpos+ 8] & 0xff | (m[mpos+ 9] & 0xff) << 8; h4 += ((t3 >>>  4) | (t4 << 12)) & 0x1fff;\n    h5 += ((t4 >>>  1)) & 0x1fff;\n    t5 = m[mpos+10] & 0xff | (m[mpos+11] & 0xff) << 8; h6 += ((t4 >>> 14) | (t5 <<  2)) & 0x1fff;\n    t6 = m[mpos+12] & 0xff | (m[mpos+13] & 0xff) << 8; h7 += ((t5 >>> 11) | (t6 <<  5)) & 0x1fff;\n    t7 = m[mpos+14] & 0xff | (m[mpos+15] & 0xff) << 8; h8 += ((t6 >>>  8) | (t7 <<  8)) & 0x1fff;\n    h9 += ((t7 >>> 5)) | hibit;\n\n    c = 0;\n\n    d0 = c;\n    d0 += h0 * r0;\n    d0 += h1 * (5 * r9);\n    d0 += h2 * (5 * r8);\n    d0 += h3 * (5 * r7);\n    d0 += h4 * (5 * r6);\n    c = (d0 >>> 13); d0 &= 0x1fff;\n    d0 += h5 * (5 * r5);\n    d0 += h6 * (5 * r4);\n    d0 += h7 * (5 * r3);\n    d0 += h8 * (5 * r2);\n    d0 += h9 * (5 * r1);\n    c += (d0 >>> 13); d0 &= 0x1fff;\n\n    d1 = c;\n    d1 += h0 * r1;\n    d1 += h1 * r0;\n    d1 += h2 * (5 * r9);\n    d1 += h3 * (5 * r8);\n    d1 += h4 * (5 * r7);\n    c = (d1 >>> 13); d1 &= 0x1fff;\n    d1 += h5 * (5 * r6);\n    d1 += h6 * (5 * r5);\n    d1 += h7 * (5 * r4);\n    d1 += h8 * (5 * r3);\n    d1 += h9 * (5 * r2);\n    c += (d1 >>> 13); d1 &= 0x1fff;\n\n    d2 = c;\n    d2 += h0 * r2;\n    d2 += h1 * r1;\n    d2 += h2 * r0;\n    d2 += h3 * (5 * r9);\n    d2 += h4 * (5 * r8);\n    c = (d2 >>> 13); d2 &= 0x1fff;\n    d2 += h5 * (5 * r7);\n    d2 += h6 * (5 * r6);\n    d2 += h7 * (5 * r5);\n    d2 += h8 * (5 * r4);\n    d2 += h9 * (5 * r3);\n    c += (d2 >>> 13); d2 &= 0x1fff;\n\n    d3 = c;\n    d3 += h0 * r3;\n    d3 += h1 * r2;\n    d3 += h2 * r1;\n    d3 += h3 * r0;\n    d3 += h4 * (5 * r9);\n    c = (d3 >>> 13); d3 &= 0x1fff;\n    d3 += h5 * (5 * r8);\n    d3 += h6 * (5 * r7);\n    d3 += h7 * (5 * r6);\n    d3 += h8 * (5 * r5);\n    d3 += h9 * (5 * r4);\n    c += (d3 >>> 13); d3 &= 0x1fff;\n\n    d4 = c;\n    d4 += h0 * r4;\n    d4 += h1 * r3;\n    d4 += h2 * r2;\n    d4 += h3 * r1;\n    d4 += h4 * r0;\n    c = (d4 >>> 13); d4 &= 0x1fff;\n    d4 += h5 * (5 * r9);\n    d4 += h6 * (5 * r8);\n    d4 += h7 * (5 * r7);\n    d4 += h8 * (5 * r6);\n    d4 += h9 * (5 * r5);\n    c += (d4 >>> 13); d4 &= 0x1fff;\n\n    d5 = c;\n    d5 += h0 * r5;\n    d5 += h1 * r4;\n    d5 += h2 * r3;\n    d5 += h3 * r2;\n    d5 += h4 * r1;\n    c = (d5 >>> 13); d5 &= 0x1fff;\n    d5 += h5 * r0;\n    d5 += h6 * (5 * r9);\n    d5 += h7 * (5 * r8);\n    d5 += h8 * (5 * r7);\n    d5 += h9 * (5 * r6);\n    c += (d5 >>> 13); d5 &= 0x1fff;\n\n    d6 = c;\n    d6 += h0 * r6;\n    d6 += h1 * r5;\n    d6 += h2 * r4;\n    d6 += h3 * r3;\n    d6 += h4 * r2;\n    c = (d6 >>> 13); d6 &= 0x1fff;\n    d6 += h5 * r1;\n    d6 += h6 * r0;\n    d6 += h7 * (5 * r9);\n    d6 += h8 * (5 * r8);\n    d6 += h9 * (5 * r7);\n    c += (d6 >>> 13); d6 &= 0x1fff;\n\n    d7 = c;\n    d7 += h0 * r7;\n    d7 += h1 * r6;\n    d7 += h2 * r5;\n    d7 += h3 * r4;\n    d7 += h4 * r3;\n    c = (d7 >>> 13); d7 &= 0x1fff;\n    d7 += h5 * r2;\n    d7 += h6 * r1;\n    d7 += h7 * r0;\n    d7 += h8 * (5 * r9);\n    d7 += h9 * (5 * r8);\n    c += (d7 >>> 13); d7 &= 0x1fff;\n\n    d8 = c;\n    d8 += h0 * r8;\n    d8 += h1 * r7;\n    d8 += h2 * r6;\n    d8 += h3 * r5;\n    d8 += h4 * r4;\n    c = (d8 >>> 13); d8 &= 0x1fff;\n    d8 += h5 * r3;\n    d8 += h6 * r2;\n    d8 += h7 * r1;\n    d8 += h8 * r0;\n    d8 += h9 * (5 * r9);\n    c += (d8 >>> 13); d8 &= 0x1fff;\n\n    d9 = c;\n    d9 += h0 * r9;\n    d9 += h1 * r8;\n    d9 += h2 * r7;\n    d9 += h3 * r6;\n    d9 += h4 * r5;\n    c = (d9 >>> 13); d9 &= 0x1fff;\n    d9 += h5 * r4;\n    d9 += h6 * r3;\n    d9 += h7 * r2;\n    d9 += h8 * r1;\n    d9 += h9 * r0;\n    c += (d9 >>> 13); d9 &= 0x1fff;\n\n    c = (((c << 2) + c)) | 0;\n    c = (c + d0) | 0;\n    d0 = c & 0x1fff;\n    c = (c >>> 13);\n    d1 += c;\n\n    h0 = d0;\n    h1 = d1;\n    h2 = d2;\n    h3 = d3;\n    h4 = d4;\n    h5 = d5;\n    h6 = d6;\n    h7 = d7;\n    h8 = d8;\n    h9 = d9;\n\n    mpos += 16;\n    bytes -= 16;\n  }\n  this.h[0] = h0;\n  this.h[1] = h1;\n  this.h[2] = h2;\n  this.h[3] = h3;\n  this.h[4] = h4;\n  this.h[5] = h5;\n  this.h[6] = h6;\n  this.h[7] = h7;\n  this.h[8] = h8;\n  this.h[9] = h9;\n};\n\npoly1305.prototype.finish = function(mac, macpos) {\n  var g = new Uint16Array(10);\n  var c, mask, f, i;\n\n  if (this.leftover) {\n    i = this.leftover;\n    this.buffer[i++] = 1;\n    for (; i < 16; i++) this.buffer[i] = 0;\n    this.fin = 1;\n    this.blocks(this.buffer, 0, 16);\n  }\n\n  c = this.h[1] >>> 13;\n  this.h[1] &= 0x1fff;\n  for (i = 2; i < 10; i++) {\n    this.h[i] += c;\n    c = this.h[i] >>> 13;\n    this.h[i] &= 0x1fff;\n  }\n  this.h[0] += (c * 5);\n  c = this.h[0] >>> 13;\n  this.h[0] &= 0x1fff;\n  this.h[1] += c;\n  c = this.h[1] >>> 13;\n  this.h[1] &= 0x1fff;\n  this.h[2] += c;\n\n  g[0] = this.h[0] + 5;\n  c = g[0] >>> 13;\n  g[0] &= 0x1fff;\n  for (i = 1; i < 10; i++) {\n    g[i] = this.h[i] + c;\n    c = g[i] >>> 13;\n    g[i] &= 0x1fff;\n  }\n  g[9] -= (1 << 13);\n\n  mask = (c ^ 1) - 1;\n  for (i = 0; i < 10; i++) g[i] &= mask;\n  mask = ~mask;\n  for (i = 0; i < 10; i++) this.h[i] = (this.h[i] & mask) | g[i];\n\n  this.h[0] = ((this.h[0]       ) | (this.h[1] << 13)                    ) & 0xffff;\n  this.h[1] = ((this.h[1] >>>  3) | (this.h[2] << 10)                    ) & 0xffff;\n  this.h[2] = ((this.h[2] >>>  6) | (this.h[3] <<  7)                    ) & 0xffff;\n  this.h[3] = ((this.h[3] >>>  9) | (this.h[4] <<  4)                    ) & 0xffff;\n  this.h[4] = ((this.h[4] >>> 12) | (this.h[5] <<  1) | (this.h[6] << 14)) & 0xffff;\n  this.h[5] = ((this.h[6] >>>  2) | (this.h[7] << 11)                    ) & 0xffff;\n  this.h[6] = ((this.h[7] >>>  5) | (this.h[8] <<  8)                    ) & 0xffff;\n  this.h[7] = ((this.h[8] >>>  8) | (this.h[9] <<  5)                    ) & 0xffff;\n\n  f = this.h[0] + this.pad[0];\n  this.h[0] = f & 0xffff;\n  for (i = 1; i < 8; i++) {\n    f = (((this.h[i] + this.pad[i]) | 0) + (f >>> 16)) | 0;\n    this.h[i] = f & 0xffff;\n  }\n\n  mac[macpos+ 0] = (this.h[0] >>> 0) & 0xff;\n  mac[macpos+ 1] = (this.h[0] >>> 8) & 0xff;\n  mac[macpos+ 2] = (this.h[1] >>> 0) & 0xff;\n  mac[macpos+ 3] = (this.h[1] >>> 8) & 0xff;\n  mac[macpos+ 4] = (this.h[2] >>> 0) & 0xff;\n  mac[macpos+ 5] = (this.h[2] >>> 8) & 0xff;\n  mac[macpos+ 6] = (this.h[3] >>> 0) & 0xff;\n  mac[macpos+ 7] = (this.h[3] >>> 8) & 0xff;\n  mac[macpos+ 8] = (this.h[4] >>> 0) & 0xff;\n  mac[macpos+ 9] = (this.h[4] >>> 8) & 0xff;\n  mac[macpos+10] = (this.h[5] >>> 0) & 0xff;\n  mac[macpos+11] = (this.h[5] >>> 8) & 0xff;\n  mac[macpos+12] = (this.h[6] >>> 0) & 0xff;\n  mac[macpos+13] = (this.h[6] >>> 8) & 0xff;\n  mac[macpos+14] = (this.h[7] >>> 0) & 0xff;\n  mac[macpos+15] = (this.h[7] >>> 8) & 0xff;\n};\n\npoly1305.prototype.update = function(m, mpos, bytes) {\n  var i, want;\n\n  if (this.leftover) {\n    want = (16 - this.leftover);\n    if (want > bytes)\n      want = bytes;\n    for (i = 0; i < want; i++)\n      this.buffer[this.leftover + i] = m[mpos+i];\n    bytes -= want;\n    mpos += want;\n    this.leftover += want;\n    if (this.leftover < 16)\n      return;\n    this.blocks(this.buffer, 0, 16);\n    this.leftover = 0;\n  }\n\n  if (bytes >= 16) {\n    want = bytes - (bytes % 16);\n    this.blocks(m, mpos, want);\n    mpos += want;\n    bytes -= want;\n  }\n\n  if (bytes) {\n    for (i = 0; i < bytes; i++)\n      this.buffer[this.leftover + i] = m[mpos+i];\n    this.leftover += bytes;\n  }\n};\n\nfunction crypto_onetimeauth(out, outpos, m, mpos, n, k) {\n  var s = new poly1305(k);\n  s.update(m, mpos, n);\n  s.finish(out, outpos);\n  return 0;\n}\n\nfunction crypto_onetimeauth_verify(h, hpos, m, mpos, n, k) {\n  var x = new Uint8Array(16);\n  crypto_onetimeauth(x,0,m,mpos,n,k);\n  return crypto_verify_16(h,hpos,x,0);\n}\n\nfunction crypto_secretbox(c,m,d,n,k) {\n  var i;\n  if (d < 32) return -1;\n  crypto_stream_xor(c,0,m,0,d,n,k);\n  crypto_onetimeauth(c, 16, c, 32, d - 32, c);\n  for (i = 0; i < 16; i++) c[i] = 0;\n  return 0;\n}\n\nfunction crypto_secretbox_open(m,c,d,n,k) {\n  var i;\n  var x = new Uint8Array(32);\n  if (d < 32) return -1;\n  crypto_stream(x,0,32,n,k);\n  if (crypto_onetimeauth_verify(c, 16,c, 32,d - 32,x) !== 0) return -1;\n  crypto_stream_xor(m,0,c,0,d,n,k);\n  for (i = 0; i < 32; i++) m[i] = 0;\n  return 0;\n}\n\nfunction set25519(r, a) {\n  var i;\n  for (i = 0; i < 16; i++) r[i] = a[i]|0;\n}\n\nfunction car25519(o) {\n  var i, v, c = 1;\n  for (i = 0; i < 16; i++) {\n    v = o[i] + c + 65535;\n    c = Math.floor(v / 65536);\n    o[i] = v - c * 65536;\n  }\n  o[0] += c-1 + 37 * (c-1);\n}\n\nfunction sel25519(p, q, b) {\n  var t, c = ~(b-1);\n  for (var i = 0; i < 16; i++) {\n    t = c & (p[i] ^ q[i]);\n    p[i] ^= t;\n    q[i] ^= t;\n  }\n}\n\nfunction pack25519(o, n) {\n  var i, j, b;\n  var m = gf(), t = gf();\n  for (i = 0; i < 16; i++) t[i] = n[i];\n  car25519(t);\n  car25519(t);\n  car25519(t);\n  for (j = 0; j < 2; j++) {\n    m[0] = t[0] - 0xffed;\n    for (i = 1; i < 15; i++) {\n      m[i] = t[i] - 0xffff - ((m[i-1]>>16) & 1);\n      m[i-1] &= 0xffff;\n    }\n    m[15] = t[15] - 0x7fff - ((m[14]>>16) & 1);\n    b = (m[15]>>16) & 1;\n    m[14] &= 0xffff;\n    sel25519(t, m, 1-b);\n  }\n  for (i = 0; i < 16; i++) {\n    o[2*i] = t[i] & 0xff;\n    o[2*i+1] = t[i]>>8;\n  }\n}\n\nfunction neq25519(a, b) {\n  var c = new Uint8Array(32), d = new Uint8Array(32);\n  pack25519(c, a);\n  pack25519(d, b);\n  return crypto_verify_32(c, 0, d, 0);\n}\n\nfunction par25519(a) {\n  var d = new Uint8Array(32);\n  pack25519(d, a);\n  return d[0] & 1;\n}\n\nfunction unpack25519(o, n) {\n  var i;\n  for (i = 0; i < 16; i++) o[i] = n[2*i] + (n[2*i+1] << 8);\n  o[15] &= 0x7fff;\n}\n\nfunction A(o, a, b) {\n  for (var i = 0; i < 16; i++) o[i] = a[i] + b[i];\n}\n\nfunction Z(o, a, b) {\n  for (var i = 0; i < 16; i++) o[i] = a[i] - b[i];\n}\n\nfunction M(o, a, b) {\n  var v, c,\n     t0 = 0,  t1 = 0,  t2 = 0,  t3 = 0,  t4 = 0,  t5 = 0,  t6 = 0,  t7 = 0,\n     t8 = 0,  t9 = 0, t10 = 0, t11 = 0, t12 = 0, t13 = 0, t14 = 0, t15 = 0,\n    t16 = 0, t17 = 0, t18 = 0, t19 = 0, t20 = 0, t21 = 0, t22 = 0, t23 = 0,\n    t24 = 0, t25 = 0, t26 = 0, t27 = 0, t28 = 0, t29 = 0, t30 = 0,\n    b0 = b[0],\n    b1 = b[1],\n    b2 = b[2],\n    b3 = b[3],\n    b4 = b[4],\n    b5 = b[5],\n    b6 = b[6],\n    b7 = b[7],\n    b8 = b[8],\n    b9 = b[9],\n    b10 = b[10],\n    b11 = b[11],\n    b12 = b[12],\n    b13 = b[13],\n    b14 = b[14],\n    b15 = b[15];\n\n  v = a[0];\n  t0 += v * b0;\n  t1 += v * b1;\n  t2 += v * b2;\n  t3 += v * b3;\n  t4 += v * b4;\n  t5 += v * b5;\n  t6 += v * b6;\n  t7 += v * b7;\n  t8 += v * b8;\n  t9 += v * b9;\n  t10 += v * b10;\n  t11 += v * b11;\n  t12 += v * b12;\n  t13 += v * b13;\n  t14 += v * b14;\n  t15 += v * b15;\n  v = a[1];\n  t1 += v * b0;\n  t2 += v * b1;\n  t3 += v * b2;\n  t4 += v * b3;\n  t5 += v * b4;\n  t6 += v * b5;\n  t7 += v * b6;\n  t8 += v * b7;\n  t9 += v * b8;\n  t10 += v * b9;\n  t11 += v * b10;\n  t12 += v * b11;\n  t13 += v * b12;\n  t14 += v * b13;\n  t15 += v * b14;\n  t16 += v * b15;\n  v = a[2];\n  t2 += v * b0;\n  t3 += v * b1;\n  t4 += v * b2;\n  t5 += v * b3;\n  t6 += v * b4;\n  t7 += v * b5;\n  t8 += v * b6;\n  t9 += v * b7;\n  t10 += v * b8;\n  t11 += v * b9;\n  t12 += v * b10;\n  t13 += v * b11;\n  t14 += v * b12;\n  t15 += v * b13;\n  t16 += v * b14;\n  t17 += v * b15;\n  v = a[3];\n  t3 += v * b0;\n  t4 += v * b1;\n  t5 += v * b2;\n  t6 += v * b3;\n  t7 += v * b4;\n  t8 += v * b5;\n  t9 += v * b6;\n  t10 += v * b7;\n  t11 += v * b8;\n  t12 += v * b9;\n  t13 += v * b10;\n  t14 += v * b11;\n  t15 += v * b12;\n  t16 += v * b13;\n  t17 += v * b14;\n  t18 += v * b15;\n  v = a[4];\n  t4 += v * b0;\n  t5 += v * b1;\n  t6 += v * b2;\n  t7 += v * b3;\n  t8 += v * b4;\n  t9 += v * b5;\n  t10 += v * b6;\n  t11 += v * b7;\n  t12 += v * b8;\n  t13 += v * b9;\n  t14 += v * b10;\n  t15 += v * b11;\n  t16 += v * b12;\n  t17 += v * b13;\n  t18 += v * b14;\n  t19 += v * b15;\n  v = a[5];\n  t5 += v * b0;\n  t6 += v * b1;\n  t7 += v * b2;\n  t8 += v * b3;\n  t9 += v * b4;\n  t10 += v * b5;\n  t11 += v * b6;\n  t12 += v * b7;\n  t13 += v * b8;\n  t14 += v * b9;\n  t15 += v * b10;\n  t16 += v * b11;\n  t17 += v * b12;\n  t18 += v * b13;\n  t19 += v * b14;\n  t20 += v * b15;\n  v = a[6];\n  t6 += v * b0;\n  t7 += v * b1;\n  t8 += v * b2;\n  t9 += v * b3;\n  t10 += v * b4;\n  t11 += v * b5;\n  t12 += v * b6;\n  t13 += v * b7;\n  t14 += v * b8;\n  t15 += v * b9;\n  t16 += v * b10;\n  t17 += v * b11;\n  t18 += v * b12;\n  t19 += v * b13;\n  t20 += v * b14;\n  t21 += v * b15;\n  v = a[7];\n  t7 += v * b0;\n  t8 += v * b1;\n  t9 += v * b2;\n  t10 += v * b3;\n  t11 += v * b4;\n  t12 += v * b5;\n  t13 += v * b6;\n  t14 += v * b7;\n  t15 += v * b8;\n  t16 += v * b9;\n  t17 += v * b10;\n  t18 += v * b11;\n  t19 += v * b12;\n  t20 += v * b13;\n  t21 += v * b14;\n  t22 += v * b15;\n  v = a[8];\n  t8 += v * b0;\n  t9 += v * b1;\n  t10 += v * b2;\n  t11 += v * b3;\n  t12 += v * b4;\n  t13 += v * b5;\n  t14 += v * b6;\n  t15 += v * b7;\n  t16 += v * b8;\n  t17 += v * b9;\n  t18 += v * b10;\n  t19 += v * b11;\n  t20 += v * b12;\n  t21 += v * b13;\n  t22 += v * b14;\n  t23 += v * b15;\n  v = a[9];\n  t9 += v * b0;\n  t10 += v * b1;\n  t11 += v * b2;\n  t12 += v * b3;\n  t13 += v * b4;\n  t14 += v * b5;\n  t15 += v * b6;\n  t16 += v * b7;\n  t17 += v * b8;\n  t18 += v * b9;\n  t19 += v * b10;\n  t20 += v * b11;\n  t21 += v * b12;\n  t22 += v * b13;\n  t23 += v * b14;\n  t24 += v * b15;\n  v = a[10];\n  t10 += v * b0;\n  t11 += v * b1;\n  t12 += v * b2;\n  t13 += v * b3;\n  t14 += v * b4;\n  t15 += v * b5;\n  t16 += v * b6;\n  t17 += v * b7;\n  t18 += v * b8;\n  t19 += v * b9;\n  t20 += v * b10;\n  t21 += v * b11;\n  t22 += v * b12;\n  t23 += v * b13;\n  t24 += v * b14;\n  t25 += v * b15;\n  v = a[11];\n  t11 += v * b0;\n  t12 += v * b1;\n  t13 += v * b2;\n  t14 += v * b3;\n  t15 += v * b4;\n  t16 += v * b5;\n  t17 += v * b6;\n  t18 += v * b7;\n  t19 += v * b8;\n  t20 += v * b9;\n  t21 += v * b10;\n  t22 += v * b11;\n  t23 += v * b12;\n  t24 += v * b13;\n  t25 += v * b14;\n  t26 += v * b15;\n  v = a[12];\n  t12 += v * b0;\n  t13 += v * b1;\n  t14 += v * b2;\n  t15 += v * b3;\n  t16 += v * b4;\n  t17 += v * b5;\n  t18 += v * b6;\n  t19 += v * b7;\n  t20 += v * b8;\n  t21 += v * b9;\n  t22 += v * b10;\n  t23 += v * b11;\n  t24 += v * b12;\n  t25 += v * b13;\n  t26 += v * b14;\n  t27 += v * b15;\n  v = a[13];\n  t13 += v * b0;\n  t14 += v * b1;\n  t15 += v * b2;\n  t16 += v * b3;\n  t17 += v * b4;\n  t18 += v * b5;\n  t19 += v * b6;\n  t20 += v * b7;\n  t21 += v * b8;\n  t22 += v * b9;\n  t23 += v * b10;\n  t24 += v * b11;\n  t25 += v * b12;\n  t26 += v * b13;\n  t27 += v * b14;\n  t28 += v * b15;\n  v = a[14];\n  t14 += v * b0;\n  t15 += v * b1;\n  t16 += v * b2;\n  t17 += v * b3;\n  t18 += v * b4;\n  t19 += v * b5;\n  t20 += v * b6;\n  t21 += v * b7;\n  t22 += v * b8;\n  t23 += v * b9;\n  t24 += v * b10;\n  t25 += v * b11;\n  t26 += v * b12;\n  t27 += v * b13;\n  t28 += v * b14;\n  t29 += v * b15;\n  v = a[15];\n  t15 += v * b0;\n  t16 += v * b1;\n  t17 += v * b2;\n  t18 += v * b3;\n  t19 += v * b4;\n  t20 += v * b5;\n  t21 += v * b6;\n  t22 += v * b7;\n  t23 += v * b8;\n  t24 += v * b9;\n  t25 += v * b10;\n  t26 += v * b11;\n  t27 += v * b12;\n  t28 += v * b13;\n  t29 += v * b14;\n  t30 += v * b15;\n\n  t0  += 38 * t16;\n  t1  += 38 * t17;\n  t2  += 38 * t18;\n  t3  += 38 * t19;\n  t4  += 38 * t20;\n  t5  += 38 * t21;\n  t6  += 38 * t22;\n  t7  += 38 * t23;\n  t8  += 38 * t24;\n  t9  += 38 * t25;\n  t10 += 38 * t26;\n  t11 += 38 * t27;\n  t12 += 38 * t28;\n  t13 += 38 * t29;\n  t14 += 38 * t30;\n  // t15 left as is\n\n  // first car\n  c = 1;\n  v =  t0 + c + 65535; c = Math.floor(v / 65536);  t0 = v - c * 65536;\n  v =  t1 + c + 65535; c = Math.floor(v / 65536);  t1 = v - c * 65536;\n  v =  t2 + c + 65535; c = Math.floor(v / 65536);  t2 = v - c * 65536;\n  v =  t3 + c + 65535; c = Math.floor(v / 65536);  t3 = v - c * 65536;\n  v =  t4 + c + 65535; c = Math.floor(v / 65536);  t4 = v - c * 65536;\n  v =  t5 + c + 65535; c = Math.floor(v / 65536);  t5 = v - c * 65536;\n  v =  t6 + c + 65535; c = Math.floor(v / 65536);  t6 = v - c * 65536;\n  v =  t7 + c + 65535; c = Math.floor(v / 65536);  t7 = v - c * 65536;\n  v =  t8 + c + 65535; c = Math.floor(v / 65536);  t8 = v - c * 65536;\n  v =  t9 + c + 65535; c = Math.floor(v / 65536);  t9 = v - c * 65536;\n  v = t10 + c + 65535; c = Math.floor(v / 65536); t10 = v - c * 65536;\n  v = t11 + c + 65535; c = Math.floor(v / 65536); t11 = v - c * 65536;\n  v = t12 + c + 65535; c = Math.floor(v / 65536); t12 = v - c * 65536;\n  v = t13 + c + 65535; c = Math.floor(v / 65536); t13 = v - c * 65536;\n  v = t14 + c + 65535; c = Math.floor(v / 65536); t14 = v - c * 65536;\n  v = t15 + c + 65535; c = Math.floor(v / 65536); t15 = v - c * 65536;\n  t0 += c-1 + 37 * (c-1);\n\n  // second car\n  c = 1;\n  v =  t0 + c + 65535; c = Math.floor(v / 65536);  t0 = v - c * 65536;\n  v =  t1 + c + 65535; c = Math.floor(v / 65536);  t1 = v - c * 65536;\n  v =  t2 + c + 65535; c = Math.floor(v / 65536);  t2 = v - c * 65536;\n  v =  t3 + c + 65535; c = Math.floor(v / 65536);  t3 = v - c * 65536;\n  v =  t4 + c + 65535; c = Math.floor(v / 65536);  t4 = v - c * 65536;\n  v =  t5 + c + 65535; c = Math.floor(v / 65536);  t5 = v - c * 65536;\n  v =  t6 + c + 65535; c = Math.floor(v / 65536);  t6 = v - c * 65536;\n  v =  t7 + c + 65535; c = Math.floor(v / 65536);  t7 = v - c * 65536;\n  v =  t8 + c + 65535; c = Math.floor(v / 65536);  t8 = v - c * 65536;\n  v =  t9 + c + 65535; c = Math.floor(v / 65536);  t9 = v - c * 65536;\n  v = t10 + c + 65535; c = Math.floor(v / 65536); t10 = v - c * 65536;\n  v = t11 + c + 65535; c = Math.floor(v / 65536); t11 = v - c * 65536;\n  v = t12 + c + 65535; c = Math.floor(v / 65536); t12 = v - c * 65536;\n  v = t13 + c + 65535; c = Math.floor(v / 65536); t13 = v - c * 65536;\n  v = t14 + c + 65535; c = Math.floor(v / 65536); t14 = v - c * 65536;\n  v = t15 + c + 65535; c = Math.floor(v / 65536); t15 = v - c * 65536;\n  t0 += c-1 + 37 * (c-1);\n\n  o[ 0] = t0;\n  o[ 1] = t1;\n  o[ 2] = t2;\n  o[ 3] = t3;\n  o[ 4] = t4;\n  o[ 5] = t5;\n  o[ 6] = t6;\n  o[ 7] = t7;\n  o[ 8] = t8;\n  o[ 9] = t9;\n  o[10] = t10;\n  o[11] = t11;\n  o[12] = t12;\n  o[13] = t13;\n  o[14] = t14;\n  o[15] = t15;\n}\n\nfunction S(o, a) {\n  M(o, a, a);\n}\n\nfunction inv25519(o, i) {\n  var c = gf();\n  var a;\n  for (a = 0; a < 16; a++) c[a] = i[a];\n  for (a = 253; a >= 0; a--) {\n    S(c, c);\n    if(a !== 2 && a !== 4) M(c, c, i);\n  }\n  for (a = 0; a < 16; a++) o[a] = c[a];\n}\n\nfunction pow2523(o, i) {\n  var c = gf();\n  var a;\n  for (a = 0; a < 16; a++) c[a] = i[a];\n  for (a = 250; a >= 0; a--) {\n      S(c, c);\n      if(a !== 1) M(c, c, i);\n  }\n  for (a = 0; a < 16; a++) o[a] = c[a];\n}\n\nfunction crypto_scalarmult(q, n, p) {\n  var z = new Uint8Array(32);\n  var x = new Float64Array(80), r, i;\n  var a = gf(), b = gf(), c = gf(),\n      d = gf(), e = gf(), f = gf();\n  for (i = 0; i < 31; i++) z[i] = n[i];\n  z[31]=(n[31]&127)|64;\n  z[0]&=248;\n  unpack25519(x,p);\n  for (i = 0; i < 16; i++) {\n    b[i]=x[i];\n    d[i]=a[i]=c[i]=0;\n  }\n  a[0]=d[0]=1;\n  for (i=254; i>=0; --i) {\n    r=(z[i>>>3]>>>(i&7))&1;\n    sel25519(a,b,r);\n    sel25519(c,d,r);\n    A(e,a,c);\n    Z(a,a,c);\n    A(c,b,d);\n    Z(b,b,d);\n    S(d,e);\n    S(f,a);\n    M(a,c,a);\n    M(c,b,e);\n    A(e,a,c);\n    Z(a,a,c);\n    S(b,a);\n    Z(c,d,f);\n    M(a,c,_121665);\n    A(a,a,d);\n    M(c,c,a);\n    M(a,d,f);\n    M(d,b,x);\n    S(b,e);\n    sel25519(a,b,r);\n    sel25519(c,d,r);\n  }\n  for (i = 0; i < 16; i++) {\n    x[i+16]=a[i];\n    x[i+32]=c[i];\n    x[i+48]=b[i];\n    x[i+64]=d[i];\n  }\n  var x32 = x.subarray(32);\n  var x16 = x.subarray(16);\n  inv25519(x32,x32);\n  M(x16,x16,x32);\n  pack25519(q,x16);\n  return 0;\n}\n\nfunction crypto_scalarmult_base(q, n) {\n  return crypto_scalarmult(q, n, _9);\n}\n\nfunction crypto_box_keypair(y, x) {\n  randombytes(x, 32);\n  return crypto_scalarmult_base(y, x);\n}\n\nfunction crypto_box_beforenm(k, y, x) {\n  var s = new Uint8Array(32);\n  crypto_scalarmult(s, x, y);\n  return crypto_core_hsalsa20(k, _0, s, sigma);\n}\n\nvar crypto_box_afternm = crypto_secretbox;\nvar crypto_box_open_afternm = crypto_secretbox_open;\n\nfunction crypto_box(c, m, d, n, y, x) {\n  var k = new Uint8Array(32);\n  crypto_box_beforenm(k, y, x);\n  return crypto_box_afternm(c, m, d, n, k);\n}\n\nfunction crypto_box_open(m, c, d, n, y, x) {\n  var k = new Uint8Array(32);\n  crypto_box_beforenm(k, y, x);\n  return crypto_box_open_afternm(m, c, d, n, k);\n}\n\nvar K = [\n  0x428a2f98, 0xd728ae22, 0x71374491, 0x23ef65cd,\n  0xb5c0fbcf, 0xec4d3b2f, 0xe9b5dba5, 0x8189dbbc,\n  0x3956c25b, 0xf348b538, 0x59f111f1, 0xb605d019,\n  0x923f82a4, 0xaf194f9b, 0xab1c5ed5, 0xda6d8118,\n  0xd807aa98, 0xa3030242, 0x12835b01, 0x45706fbe,\n  0x243185be, 0x4ee4b28c, 0x550c7dc3, 0xd5ffb4e2,\n  0x72be5d74, 0xf27b896f, 0x80deb1fe, 0x3b1696b1,\n  0x9bdc06a7, 0x25c71235, 0xc19bf174, 0xcf692694,\n  0xe49b69c1, 0x9ef14ad2, 0xefbe4786, 0x384f25e3,\n  0x0fc19dc6, 0x8b8cd5b5, 0x240ca1cc, 0x77ac9c65,\n  0x2de92c6f, 0x592b0275, 0x4a7484aa, 0x6ea6e483,\n  0x5cb0a9dc, 0xbd41fbd4, 0x76f988da, 0x831153b5,\n  0x983e5152, 0xee66dfab, 0xa831c66d, 0x2db43210,\n  0xb00327c8, 0x98fb213f, 0xbf597fc7, 0xbeef0ee4,\n  0xc6e00bf3, 0x3da88fc2, 0xd5a79147, 0x930aa725,\n  0x06ca6351, 0xe003826f, 0x14292967, 0x0a0e6e70,\n  0x27b70a85, 0x46d22ffc, 0x2e1b2138, 0x5c26c926,\n  0x4d2c6dfc, 0x5ac42aed, 0x53380d13, 0x9d95b3df,\n  0x650a7354, 0x8baf63de, 0x766a0abb, 0x3c77b2a8,\n  0x81c2c92e, 0x47edaee6, 0x92722c85, 0x1482353b,\n  0xa2bfe8a1, 0x4cf10364, 0xa81a664b, 0xbc423001,\n  0xc24b8b70, 0xd0f89791, 0xc76c51a3, 0x0654be30,\n  0xd192e819, 0xd6ef5218, 0xd6990624, 0x5565a910,\n  0xf40e3585, 0x5771202a, 0x106aa070, 0x32bbd1b8,\n  0x19a4c116, 0xb8d2d0c8, 0x1e376c08, 0x5141ab53,\n  0x2748774c, 0xdf8eeb99, 0x34b0bcb5, 0xe19b48a8,\n  0x391c0cb3, 0xc5c95a63, 0x4ed8aa4a, 0xe3418acb,\n  0x5b9cca4f, 0x7763e373, 0x682e6ff3, 0xd6b2b8a3,\n  0x748f82ee, 0x5defb2fc, 0x78a5636f, 0x43172f60,\n  0x84c87814, 0xa1f0ab72, 0x8cc70208, 0x1a6439ec,\n  0x90befffa, 0x23631e28, 0xa4506ceb, 0xde82bde9,\n  0xbef9a3f7, 0xb2c67915, 0xc67178f2, 0xe372532b,\n  0xca273ece, 0xea26619c, 0xd186b8c7, 0x21c0c207,\n  0xeada7dd6, 0xcde0eb1e, 0xf57d4f7f, 0xee6ed178,\n  0x06f067aa, 0x72176fba, 0x0a637dc5, 0xa2c898a6,\n  0x113f9804, 0xbef90dae, 0x1b710b35, 0x131c471b,\n  0x28db77f5, 0x23047d84, 0x32caab7b, 0x40c72493,\n  0x3c9ebe0a, 0x15c9bebc, 0x431d67c4, 0x9c100d4c,\n  0x4cc5d4be, 0xcb3e42b6, 0x597f299c, 0xfc657e2a,\n  0x5fcb6fab, 0x3ad6faec, 0x6c44198c, 0x4a475817\n];\n\nfunction crypto_hashblocks_hl(hh, hl, m, n) {\n  var wh = new Int32Array(16), wl = new Int32Array(16),\n      bh0, bh1, bh2, bh3, bh4, bh5, bh6, bh7,\n      bl0, bl1, bl2, bl3, bl4, bl5, bl6, bl7,\n      th, tl, i, j, h, l, a, b, c, d;\n\n  var ah0 = hh[0],\n      ah1 = hh[1],\n      ah2 = hh[2],\n      ah3 = hh[3],\n      ah4 = hh[4],\n      ah5 = hh[5],\n      ah6 = hh[6],\n      ah7 = hh[7],\n\n      al0 = hl[0],\n      al1 = hl[1],\n      al2 = hl[2],\n      al3 = hl[3],\n      al4 = hl[4],\n      al5 = hl[5],\n      al6 = hl[6],\n      al7 = hl[7];\n\n  var pos = 0;\n  while (n >= 128) {\n    for (i = 0; i < 16; i++) {\n      j = 8 * i + pos;\n      wh[i] = (m[j+0] << 24) | (m[j+1] << 16) | (m[j+2] << 8) | m[j+3];\n      wl[i] = (m[j+4] << 24) | (m[j+5] << 16) | (m[j+6] << 8) | m[j+7];\n    }\n    for (i = 0; i < 80; i++) {\n      bh0 = ah0;\n      bh1 = ah1;\n      bh2 = ah2;\n      bh3 = ah3;\n      bh4 = ah4;\n      bh5 = ah5;\n      bh6 = ah6;\n      bh7 = ah7;\n\n      bl0 = al0;\n      bl1 = al1;\n      bl2 = al2;\n      bl3 = al3;\n      bl4 = al4;\n      bl5 = al5;\n      bl6 = al6;\n      bl7 = al7;\n\n      // add\n      h = ah7;\n      l = al7;\n\n      a = l & 0xffff; b = l >>> 16;\n      c = h & 0xffff; d = h >>> 16;\n\n      // Sigma1\n      h = ((ah4 >>> 14) | (al4 << (32-14))) ^ ((ah4 >>> 18) | (al4 << (32-18))) ^ ((al4 >>> (41-32)) | (ah4 << (32-(41-32))));\n      l = ((al4 >>> 14) | (ah4 << (32-14))) ^ ((al4 >>> 18) | (ah4 << (32-18))) ^ ((ah4 >>> (41-32)) | (al4 << (32-(41-32))));\n\n      a += l & 0xffff; b += l >>> 16;\n      c += h & 0xffff; d += h >>> 16;\n\n      // Ch\n      h = (ah4 & ah5) ^ (~ah4 & ah6);\n      l = (al4 & al5) ^ (~al4 & al6);\n\n      a += l & 0xffff; b += l >>> 16;\n      c += h & 0xffff; d += h >>> 16;\n\n      // K\n      h = K[i*2];\n      l = K[i*2+1];\n\n      a += l & 0xffff; b += l >>> 16;\n      c += h & 0xffff; d += h >>> 16;\n\n      // w\n      h = wh[i%16];\n      l = wl[i%16];\n\n      a += l & 0xffff; b += l >>> 16;\n      c += h & 0xffff; d += h >>> 16;\n\n      b += a >>> 16;\n      c += b >>> 16;\n      d += c >>> 16;\n\n      th = c & 0xffff | d << 16;\n      tl = a & 0xffff | b << 16;\n\n      // add\n      h = th;\n      l = tl;\n\n      a = l & 0xffff; b = l >>> 16;\n      c = h & 0xffff; d = h >>> 16;\n\n      // Sigma0\n      h = ((ah0 >>> 28) | (al0 << (32-28))) ^ ((al0 >>> (34-32)) | (ah0 << (32-(34-32)))) ^ ((al0 >>> (39-32)) | (ah0 << (32-(39-32))));\n      l = ((al0 >>> 28) | (ah0 << (32-28))) ^ ((ah0 >>> (34-32)) | (al0 << (32-(34-32)))) ^ ((ah0 >>> (39-32)) | (al0 << (32-(39-32))));\n\n      a += l & 0xffff; b += l >>> 16;\n      c += h & 0xffff; d += h >>> 16;\n\n      // Maj\n      h = (ah0 & ah1) ^ (ah0 & ah2) ^ (ah1 & ah2);\n      l = (al0 & al1) ^ (al0 & al2) ^ (al1 & al2);\n\n      a += l & 0xffff; b += l >>> 16;\n      c += h & 0xffff; d += h >>> 16;\n\n      b += a >>> 16;\n      c += b >>> 16;\n      d += c >>> 16;\n\n      bh7 = (c & 0xffff) | (d << 16);\n      bl7 = (a & 0xffff) | (b << 16);\n\n      // add\n      h = bh3;\n      l = bl3;\n\n      a = l & 0xffff; b = l >>> 16;\n      c = h & 0xffff; d = h >>> 16;\n\n      h = th;\n      l = tl;\n\n      a += l & 0xffff; b += l >>> 16;\n      c += h & 0xffff; d += h >>> 16;\n\n      b += a >>> 16;\n      c += b >>> 16;\n      d += c >>> 16;\n\n      bh3 = (c & 0xffff) | (d << 16);\n      bl3 = (a & 0xffff) | (b << 16);\n\n      ah1 = bh0;\n      ah2 = bh1;\n      ah3 = bh2;\n      ah4 = bh3;\n      ah5 = bh4;\n      ah6 = bh5;\n      ah7 = bh6;\n      ah0 = bh7;\n\n      al1 = bl0;\n      al2 = bl1;\n      al3 = bl2;\n      al4 = bl3;\n      al5 = bl4;\n      al6 = bl5;\n      al7 = bl6;\n      al0 = bl7;\n\n      if (i%16 === 15) {\n        for (j = 0; j < 16; j++) {\n          // add\n          h = wh[j];\n          l = wl[j];\n\n          a = l & 0xffff; b = l >>> 16;\n          c = h & 0xffff; d = h >>> 16;\n\n          h = wh[(j+9)%16];\n          l = wl[(j+9)%16];\n\n          a += l & 0xffff; b += l >>> 16;\n          c += h & 0xffff; d += h >>> 16;\n\n          // sigma0\n          th = wh[(j+1)%16];\n          tl = wl[(j+1)%16];\n          h = ((th >>> 1) | (tl << (32-1))) ^ ((th >>> 8) | (tl << (32-8))) ^ (th >>> 7);\n          l = ((tl >>> 1) | (th << (32-1))) ^ ((tl >>> 8) | (th << (32-8))) ^ ((tl >>> 7) | (th << (32-7)));\n\n          a += l & 0xffff; b += l >>> 16;\n          c += h & 0xffff; d += h >>> 16;\n\n          // sigma1\n          th = wh[(j+14)%16];\n          tl = wl[(j+14)%16];\n          h = ((th >>> 19) | (tl << (32-19))) ^ ((tl >>> (61-32)) | (th << (32-(61-32)))) ^ (th >>> 6);\n          l = ((tl >>> 19) | (th << (32-19))) ^ ((th >>> (61-32)) | (tl << (32-(61-32)))) ^ ((tl >>> 6) | (th << (32-6)));\n\n          a += l & 0xffff; b += l >>> 16;\n          c += h & 0xffff; d += h >>> 16;\n\n          b += a >>> 16;\n          c += b >>> 16;\n          d += c >>> 16;\n\n          wh[j] = (c & 0xffff) | (d << 16);\n          wl[j] = (a & 0xffff) | (b << 16);\n        }\n      }\n    }\n\n    // add\n    h = ah0;\n    l = al0;\n\n    a = l & 0xffff; b = l >>> 16;\n    c = h & 0xffff; d = h >>> 16;\n\n    h = hh[0];\n    l = hl[0];\n\n    a += l & 0xffff; b += l >>> 16;\n    c += h & 0xffff; d += h >>> 16;\n\n    b += a >>> 16;\n    c += b >>> 16;\n    d += c >>> 16;\n\n    hh[0] = ah0 = (c & 0xffff) | (d << 16);\n    hl[0] = al0 = (a & 0xffff) | (b << 16);\n\n    h = ah1;\n    l = al1;\n\n    a = l & 0xffff; b = l >>> 16;\n    c = h & 0xffff; d = h >>> 16;\n\n    h = hh[1];\n    l = hl[1];\n\n    a += l & 0xffff; b += l >>> 16;\n    c += h & 0xffff; d += h >>> 16;\n\n    b += a >>> 16;\n    c += b >>> 16;\n    d += c >>> 16;\n\n    hh[1] = ah1 = (c & 0xffff) | (d << 16);\n    hl[1] = al1 = (a & 0xffff) | (b << 16);\n\n    h = ah2;\n    l = al2;\n\n    a = l & 0xffff; b = l >>> 16;\n    c = h & 0xffff; d = h >>> 16;\n\n    h = hh[2];\n    l = hl[2];\n\n    a += l & 0xffff; b += l >>> 16;\n    c += h & 0xffff; d += h >>> 16;\n\n    b += a >>> 16;\n    c += b >>> 16;\n    d += c >>> 16;\n\n    hh[2] = ah2 = (c & 0xffff) | (d << 16);\n    hl[2] = al2 = (a & 0xffff) | (b << 16);\n\n    h = ah3;\n    l = al3;\n\n    a = l & 0xffff; b = l >>> 16;\n    c = h & 0xffff; d = h >>> 16;\n\n    h = hh[3];\n    l = hl[3];\n\n    a += l & 0xffff; b += l >>> 16;\n    c += h & 0xffff; d += h >>> 16;\n\n    b += a >>> 16;\n    c += b >>> 16;\n    d += c >>> 16;\n\n    hh[3] = ah3 = (c & 0xffff) | (d << 16);\n    hl[3] = al3 = (a & 0xffff) | (b << 16);\n\n    h = ah4;\n    l = al4;\n\n    a = l & 0xffff; b = l >>> 16;\n    c = h & 0xffff; d = h >>> 16;\n\n    h = hh[4];\n    l = hl[4];\n\n    a += l & 0xffff; b += l >>> 16;\n    c += h & 0xffff; d += h >>> 16;\n\n    b += a >>> 16;\n    c += b >>> 16;\n    d += c >>> 16;\n\n    hh[4] = ah4 = (c & 0xffff) | (d << 16);\n    hl[4] = al4 = (a & 0xffff) | (b << 16);\n\n    h = ah5;\n    l = al5;\n\n    a = l & 0xffff; b = l >>> 16;\n    c = h & 0xffff; d = h >>> 16;\n\n    h = hh[5];\n    l = hl[5];\n\n    a += l & 0xffff; b += l >>> 16;\n    c += h & 0xffff; d += h >>> 16;\n\n    b += a >>> 16;\n    c += b >>> 16;\n    d += c >>> 16;\n\n    hh[5] = ah5 = (c & 0xffff) | (d << 16);\n    hl[5] = al5 = (a & 0xffff) | (b << 16);\n\n    h = ah6;\n    l = al6;\n\n    a = l & 0xffff; b = l >>> 16;\n    c = h & 0xffff; d = h >>> 16;\n\n    h = hh[6];\n    l = hl[6];\n\n    a += l & 0xffff; b += l >>> 16;\n    c += h & 0xffff; d += h >>> 16;\n\n    b += a >>> 16;\n    c += b >>> 16;\n    d += c >>> 16;\n\n    hh[6] = ah6 = (c & 0xffff) | (d << 16);\n    hl[6] = al6 = (a & 0xffff) | (b << 16);\n\n    h = ah7;\n    l = al7;\n\n    a = l & 0xffff; b = l >>> 16;\n    c = h & 0xffff; d = h >>> 16;\n\n    h = hh[7];\n    l = hl[7];\n\n    a += l & 0xffff; b += l >>> 16;\n    c += h & 0xffff; d += h >>> 16;\n\n    b += a >>> 16;\n    c += b >>> 16;\n    d += c >>> 16;\n\n    hh[7] = ah7 = (c & 0xffff) | (d << 16);\n    hl[7] = al7 = (a & 0xffff) | (b << 16);\n\n    pos += 128;\n    n -= 128;\n  }\n\n  return n;\n}\n\nfunction crypto_hash(out, m, n) {\n  var hh = new Int32Array(8),\n      hl = new Int32Array(8),\n      x = new Uint8Array(256),\n      i, b = n;\n\n  hh[0] = 0x6a09e667;\n  hh[1] = 0xbb67ae85;\n  hh[2] = 0x3c6ef372;\n  hh[3] = 0xa54ff53a;\n  hh[4] = 0x510e527f;\n  hh[5] = 0x9b05688c;\n  hh[6] = 0x1f83d9ab;\n  hh[7] = 0x5be0cd19;\n\n  hl[0] = 0xf3bcc908;\n  hl[1] = 0x84caa73b;\n  hl[2] = 0xfe94f82b;\n  hl[3] = 0x5f1d36f1;\n  hl[4] = 0xade682d1;\n  hl[5] = 0x2b3e6c1f;\n  hl[6] = 0xfb41bd6b;\n  hl[7] = 0x137e2179;\n\n  crypto_hashblocks_hl(hh, hl, m, n);\n  n %= 128;\n\n  for (i = 0; i < n; i++) x[i] = m[b-n+i];\n  x[n] = 128;\n\n  n = 256-128*(n<112?1:0);\n  x[n-9] = 0;\n  ts64(x, n-8,  (b / 0x20000000) | 0, b << 3);\n  crypto_hashblocks_hl(hh, hl, x, n);\n\n  for (i = 0; i < 8; i++) ts64(out, 8*i, hh[i], hl[i]);\n\n  return 0;\n}\n\nfunction add(p, q) {\n  var a = gf(), b = gf(), c = gf(),\n      d = gf(), e = gf(), f = gf(),\n      g = gf(), h = gf(), t = gf();\n\n  Z(a, p[1], p[0]);\n  Z(t, q[1], q[0]);\n  M(a, a, t);\n  A(b, p[0], p[1]);\n  A(t, q[0], q[1]);\n  M(b, b, t);\n  M(c, p[3], q[3]);\n  M(c, c, D2);\n  M(d, p[2], q[2]);\n  A(d, d, d);\n  Z(e, b, a);\n  Z(f, d, c);\n  A(g, d, c);\n  A(h, b, a);\n\n  M(p[0], e, f);\n  M(p[1], h, g);\n  M(p[2], g, f);\n  M(p[3], e, h);\n}\n\nfunction cswap(p, q, b) {\n  var i;\n  for (i = 0; i < 4; i++) {\n    sel25519(p[i], q[i], b);\n  }\n}\n\nfunction pack(r, p) {\n  var tx = gf(), ty = gf(), zi = gf();\n  inv25519(zi, p[2]);\n  M(tx, p[0], zi);\n  M(ty, p[1], zi);\n  pack25519(r, ty);\n  r[31] ^= par25519(tx) << 7;\n}\n\nfunction scalarmult(p, q, s) {\n  var b, i;\n  set25519(p[0], gf0);\n  set25519(p[1], gf1);\n  set25519(p[2], gf1);\n  set25519(p[3], gf0);\n  for (i = 255; i >= 0; --i) {\n    b = (s[(i/8)|0] >> (i&7)) & 1;\n    cswap(p, q, b);\n    add(q, p);\n    add(p, p);\n    cswap(p, q, b);\n  }\n}\n\nfunction scalarbase(p, s) {\n  var q = [gf(), gf(), gf(), gf()];\n  set25519(q[0], X);\n  set25519(q[1], Y);\n  set25519(q[2], gf1);\n  M(q[3], X, Y);\n  scalarmult(p, q, s);\n}\n\nfunction crypto_sign_keypair(pk, sk, seeded) {\n  var d = new Uint8Array(64);\n  var p = [gf(), gf(), gf(), gf()];\n  var i;\n\n  if (!seeded) randombytes(sk, 32);\n  crypto_hash(d, sk, 32);\n  d[0] &= 248;\n  d[31] &= 127;\n  d[31] |= 64;\n\n  scalarbase(p, d);\n  pack(pk, p);\n\n  for (i = 0; i < 32; i++) sk[i+32] = pk[i];\n  return 0;\n}\n\nvar L = new Float64Array([0xed, 0xd3, 0xf5, 0x5c, 0x1a, 0x63, 0x12, 0x58, 0xd6, 0x9c, 0xf7, 0xa2, 0xde, 0xf9, 0xde, 0x14, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x10]);\n\nfunction modL(r, x) {\n  var carry, i, j, k;\n  for (i = 63; i >= 32; --i) {\n    carry = 0;\n    for (j = i - 32, k = i - 12; j < k; ++j) {\n      x[j] += carry - 16 * x[i] * L[j - (i - 32)];\n      carry = Math.floor((x[j] + 128) / 256);\n      x[j] -= carry * 256;\n    }\n    x[j] += carry;\n    x[i] = 0;\n  }\n  carry = 0;\n  for (j = 0; j < 32; j++) {\n    x[j] += carry - (x[31] >> 4) * L[j];\n    carry = x[j] >> 8;\n    x[j] &= 255;\n  }\n  for (j = 0; j < 32; j++) x[j] -= carry * L[j];\n  for (i = 0; i < 32; i++) {\n    x[i+1] += x[i] >> 8;\n    r[i] = x[i] & 255;\n  }\n}\n\nfunction reduce(r) {\n  var x = new Float64Array(64), i;\n  for (i = 0; i < 64; i++) x[i] = r[i];\n  for (i = 0; i < 64; i++) r[i] = 0;\n  modL(r, x);\n}\n\n// Note: difference from C - smlen returned, not passed as argument.\nfunction crypto_sign(sm, m, n, sk) {\n  var d = new Uint8Array(64), h = new Uint8Array(64), r = new Uint8Array(64);\n  var i, j, x = new Float64Array(64);\n  var p = [gf(), gf(), gf(), gf()];\n\n  crypto_hash(d, sk, 32);\n  d[0] &= 248;\n  d[31] &= 127;\n  d[31] |= 64;\n\n  var smlen = n + 64;\n  for (i = 0; i < n; i++) sm[64 + i] = m[i];\n  for (i = 0; i < 32; i++) sm[32 + i] = d[32 + i];\n\n  crypto_hash(r, sm.subarray(32), n+32);\n  reduce(r);\n  scalarbase(p, r);\n  pack(sm, p);\n\n  for (i = 32; i < 64; i++) sm[i] = sk[i];\n  crypto_hash(h, sm, n + 64);\n  reduce(h);\n\n  for (i = 0; i < 64; i++) x[i] = 0;\n  for (i = 0; i < 32; i++) x[i] = r[i];\n  for (i = 0; i < 32; i++) {\n    for (j = 0; j < 32; j++) {\n      x[i+j] += h[i] * d[j];\n    }\n  }\n\n  modL(sm.subarray(32), x);\n  return smlen;\n}\n\nfunction unpackneg(r, p) {\n  var t = gf(), chk = gf(), num = gf(),\n      den = gf(), den2 = gf(), den4 = gf(),\n      den6 = gf();\n\n  set25519(r[2], gf1);\n  unpack25519(r[1], p);\n  S(num, r[1]);\n  M(den, num, D);\n  Z(num, num, r[2]);\n  A(den, r[2], den);\n\n  S(den2, den);\n  S(den4, den2);\n  M(den6, den4, den2);\n  M(t, den6, num);\n  M(t, t, den);\n\n  pow2523(t, t);\n  M(t, t, num);\n  M(t, t, den);\n  M(t, t, den);\n  M(r[0], t, den);\n\n  S(chk, r[0]);\n  M(chk, chk, den);\n  if (neq25519(chk, num)) M(r[0], r[0], I);\n\n  S(chk, r[0]);\n  M(chk, chk, den);\n  if (neq25519(chk, num)) return -1;\n\n  if (par25519(r[0]) === (p[31]>>7)) Z(r[0], gf0, r[0]);\n\n  M(r[3], r[0], r[1]);\n  return 0;\n}\n\nfunction crypto_sign_open(m, sm, n, pk) {\n  var i;\n  var t = new Uint8Array(32), h = new Uint8Array(64);\n  var p = [gf(), gf(), gf(), gf()],\n      q = [gf(), gf(), gf(), gf()];\n\n  if (n < 64) return -1;\n\n  if (unpackneg(q, pk)) return -1;\n\n  for (i = 0; i < n; i++) m[i] = sm[i];\n  for (i = 0; i < 32; i++) m[i+32] = pk[i];\n  crypto_hash(h, m, n);\n  reduce(h);\n  scalarmult(p, q, h);\n\n  scalarbase(q, sm.subarray(32));\n  add(p, q);\n  pack(t, p);\n\n  n -= 64;\n  if (crypto_verify_32(sm, 0, t, 0)) {\n    for (i = 0; i < n; i++) m[i] = 0;\n    return -1;\n  }\n\n  for (i = 0; i < n; i++) m[i] = sm[i + 64];\n  return n;\n}\n\nvar crypto_secretbox_KEYBYTES = 32,\n    crypto_secretbox_NONCEBYTES = 24,\n    crypto_secretbox_ZEROBYTES = 32,\n    crypto_secretbox_BOXZEROBYTES = 16,\n    crypto_scalarmult_BYTES = 32,\n    crypto_scalarmult_SCALARBYTES = 32,\n    crypto_box_PUBLICKEYBYTES = 32,\n    crypto_box_SECRETKEYBYTES = 32,\n    crypto_box_BEFORENMBYTES = 32,\n    crypto_box_NONCEBYTES = crypto_secretbox_NONCEBYTES,\n    crypto_box_ZEROBYTES = crypto_secretbox_ZEROBYTES,\n    crypto_box_BOXZEROBYTES = crypto_secretbox_BOXZEROBYTES,\n    crypto_sign_BYTES = 64,\n    crypto_sign_PUBLICKEYBYTES = 32,\n    crypto_sign_SECRETKEYBYTES = 64,\n    crypto_sign_SEEDBYTES = 32,\n    crypto_hash_BYTES = 64;\n\nnacl.lowlevel = {\n  crypto_core_hsalsa20: crypto_core_hsalsa20,\n  crypto_stream_xor: crypto_stream_xor,\n  crypto_stream: crypto_stream,\n  crypto_stream_salsa20_xor: crypto_stream_salsa20_xor,\n  crypto_stream_salsa20: crypto_stream_salsa20,\n  crypto_onetimeauth: crypto_onetimeauth,\n  crypto_onetimeauth_verify: crypto_onetimeauth_verify,\n  crypto_verify_16: crypto_verify_16,\n  crypto_verify_32: crypto_verify_32,\n  crypto_secretbox: crypto_secretbox,\n  crypto_secretbox_open: crypto_secretbox_open,\n  crypto_scalarmult: crypto_scalarmult,\n  crypto_scalarmult_base: crypto_scalarmult_base,\n  crypto_box_beforenm: crypto_box_beforenm,\n  crypto_box_afternm: crypto_box_afternm,\n  crypto_box: crypto_box,\n  crypto_box_open: crypto_box_open,\n  crypto_box_keypair: crypto_box_keypair,\n  crypto_hash: crypto_hash,\n  crypto_sign: crypto_sign,\n  crypto_sign_keypair: crypto_sign_keypair,\n  crypto_sign_open: crypto_sign_open,\n\n  crypto_secretbox_KEYBYTES: crypto_secretbox_KEYBYTES,\n  crypto_secretbox_NONCEBYTES: crypto_secretbox_NONCEBYTES,\n  crypto_secretbox_ZEROBYTES: crypto_secretbox_ZEROBYTES,\n  crypto_secretbox_BOXZEROBYTES: crypto_secretbox_BOXZEROBYTES,\n  crypto_scalarmult_BYTES: crypto_scalarmult_BYTES,\n  crypto_scalarmult_SCALARBYTES: crypto_scalarmult_SCALARBYTES,\n  crypto_box_PUBLICKEYBYTES: crypto_box_PUBLICKEYBYTES,\n  crypto_box_SECRETKEYBYTES: crypto_box_SECRETKEYBYTES,\n  crypto_box_BEFORENMBYTES: crypto_box_BEFORENMBYTES,\n  crypto_box_NONCEBYTES: crypto_box_NONCEBYTES,\n  crypto_box_ZEROBYTES: crypto_box_ZEROBYTES,\n  crypto_box_BOXZEROBYTES: crypto_box_BOXZEROBYTES,\n  crypto_sign_BYTES: crypto_sign_BYTES,\n  crypto_sign_PUBLICKEYBYTES: crypto_sign_PUBLICKEYBYTES,\n  crypto_sign_SECRETKEYBYTES: crypto_sign_SECRETKEYBYTES,\n  crypto_sign_SEEDBYTES: crypto_sign_SEEDBYTES,\n  crypto_hash_BYTES: crypto_hash_BYTES,\n\n  gf: gf,\n  D: D,\n  L: L,\n  pack25519: pack25519,\n  unpack25519: unpack25519,\n  M: M,\n  A: A,\n  S: S,\n  Z: Z,\n  pow2523: pow2523,\n  add: add,\n  set25519: set25519,\n  modL: modL,\n  scalarmult: scalarmult,\n  scalarbase: scalarbase,\n};\n\n/* High-level API */\n\nfunction checkLengths(k, n) {\n  if (k.length !== crypto_secretbox_KEYBYTES) throw new Error('bad key size');\n  if (n.length !== crypto_secretbox_NONCEBYTES) throw new Error('bad nonce size');\n}\n\nfunction checkBoxLengths(pk, sk) {\n  if (pk.length !== crypto_box_PUBLICKEYBYTES) throw new Error('bad public key size');\n  if (sk.length !== crypto_box_SECRETKEYBYTES) throw new Error('bad secret key size');\n}\n\nfunction checkArrayTypes() {\n  for (var i = 0; i < arguments.length; i++) {\n    if (!(arguments[i] instanceof Uint8Array))\n      throw new TypeError('unexpected type, use Uint8Array');\n  }\n}\n\nfunction cleanup(arr) {\n  for (var i = 0; i < arr.length; i++) arr[i] = 0;\n}\n\nnacl.randomBytes = function(n) {\n  var b = new Uint8Array(n);\n  randombytes(b, n);\n  return b;\n};\n\nnacl.secretbox = function(msg, nonce, key) {\n  checkArrayTypes(msg, nonce, key);\n  checkLengths(key, nonce);\n  var m = new Uint8Array(crypto_secretbox_ZEROBYTES + msg.length);\n  var c = new Uint8Array(m.length);\n  for (var i = 0; i < msg.length; i++) m[i+crypto_secretbox_ZEROBYTES] = msg[i];\n  crypto_secretbox(c, m, m.length, nonce, key);\n  return c.subarray(crypto_secretbox_BOXZEROBYTES);\n};\n\nnacl.secretbox.open = function(box, nonce, key) {\n  checkArrayTypes(box, nonce, key);\n  checkLengths(key, nonce);\n  var c = new Uint8Array(crypto_secretbox_BOXZEROBYTES + box.length);\n  var m = new Uint8Array(c.length);\n  for (var i = 0; i < box.length; i++) c[i+crypto_secretbox_BOXZEROBYTES] = box[i];\n  if (c.length < 32) return null;\n  if (crypto_secretbox_open(m, c, c.length, nonce, key) !== 0) return null;\n  return m.subarray(crypto_secretbox_ZEROBYTES);\n};\n\nnacl.secretbox.keyLength = crypto_secretbox_KEYBYTES;\nnacl.secretbox.nonceLength = crypto_secretbox_NONCEBYTES;\nnacl.secretbox.overheadLength = crypto_secretbox_BOXZEROBYTES;\n\nnacl.scalarMult = function(n, p) {\n  checkArrayTypes(n, p);\n  if (n.length !== crypto_scalarmult_SCALARBYTES) throw new Error('bad n size');\n  if (p.length !== crypto_scalarmult_BYTES) throw new Error('bad p size');\n  var q = new Uint8Array(crypto_scalarmult_BYTES);\n  crypto_scalarmult(q, n, p);\n  return q;\n};\n\nnacl.scalarMult.base = function(n) {\n  checkArrayTypes(n);\n  if (n.length !== crypto_scalarmult_SCALARBYTES) throw new Error('bad n size');\n  var q = new Uint8Array(crypto_scalarmult_BYTES);\n  crypto_scalarmult_base(q, n);\n  return q;\n};\n\nnacl.scalarMult.scalarLength = crypto_scalarmult_SCALARBYTES;\nnacl.scalarMult.groupElementLength = crypto_scalarmult_BYTES;\n\nnacl.box = function(msg, nonce, publicKey, secretKey) {\n  var k = nacl.box.before(publicKey, secretKey);\n  return nacl.secretbox(msg, nonce, k);\n};\n\nnacl.box.before = function(publicKey, secretKey) {\n  checkArrayTypes(publicKey, secretKey);\n  checkBoxLengths(publicKey, secretKey);\n  var k = new Uint8Array(crypto_box_BEFORENMBYTES);\n  crypto_box_beforenm(k, publicKey, secretKey);\n  return k;\n};\n\nnacl.box.after = nacl.secretbox;\n\nnacl.box.open = function(msg, nonce, publicKey, secretKey) {\n  var k = nacl.box.before(publicKey, secretKey);\n  return nacl.secretbox.open(msg, nonce, k);\n};\n\nnacl.box.open.after = nacl.secretbox.open;\n\nnacl.box.keyPair = function() {\n  var pk = new Uint8Array(crypto_box_PUBLICKEYBYTES);\n  var sk = new Uint8Array(crypto_box_SECRETKEYBYTES);\n  crypto_box_keypair(pk, sk);\n  return {publicKey: pk, secretKey: sk};\n};\n\nnacl.box.keyPair.fromSecretKey = function(secretKey) {\n  checkArrayTypes(secretKey);\n  if (secretKey.length !== crypto_box_SECRETKEYBYTES)\n    throw new Error('bad secret key size');\n  var pk = new Uint8Array(crypto_box_PUBLICKEYBYTES);\n  crypto_scalarmult_base(pk, secretKey);\n  return {publicKey: pk, secretKey: new Uint8Array(secretKey)};\n};\n\nnacl.box.publicKeyLength = crypto_box_PUBLICKEYBYTES;\nnacl.box.secretKeyLength = crypto_box_SECRETKEYBYTES;\nnacl.box.sharedKeyLength = crypto_box_BEFORENMBYTES;\nnacl.box.nonceLength = crypto_box_NONCEBYTES;\nnacl.box.overheadLength = nacl.secretbox.overheadLength;\n\nnacl.sign = function(msg, secretKey) {\n  checkArrayTypes(msg, secretKey);\n  if (secretKey.length !== crypto_sign_SECRETKEYBYTES)\n    throw new Error('bad secret key size');\n  var signedMsg = new Uint8Array(crypto_sign_BYTES+msg.length);\n  crypto_sign(signedMsg, msg, msg.length, secretKey);\n  return signedMsg;\n};\n\nnacl.sign.open = function(signedMsg, publicKey) {\n  checkArrayTypes(signedMsg, publicKey);\n  if (publicKey.length !== crypto_sign_PUBLICKEYBYTES)\n    throw new Error('bad public key size');\n  var tmp = new Uint8Array(signedMsg.length);\n  var mlen = crypto_sign_open(tmp, signedMsg, signedMsg.length, publicKey);\n  if (mlen < 0) return null;\n  var m = new Uint8Array(mlen);\n  for (var i = 0; i < m.length; i++) m[i] = tmp[i];\n  return m;\n};\n\nnacl.sign.detached = function(msg, secretKey) {\n  var signedMsg = nacl.sign(msg, secretKey);\n  var sig = new Uint8Array(crypto_sign_BYTES);\n  for (var i = 0; i < sig.length; i++) sig[i] = signedMsg[i];\n  return sig;\n};\n\nnacl.sign.detached.verify = function(msg, sig, publicKey) {\n  checkArrayTypes(msg, sig, publicKey);\n  if (sig.length !== crypto_sign_BYTES)\n    throw new Error('bad signature size');\n  if (publicKey.length !== crypto_sign_PUBLICKEYBYTES)\n    throw new Error('bad public key size');\n  var sm = new Uint8Array(crypto_sign_BYTES + msg.length);\n  var m = new Uint8Array(crypto_sign_BYTES + msg.length);\n  var i;\n  for (i = 0; i < crypto_sign_BYTES; i++) sm[i] = sig[i];\n  for (i = 0; i < msg.length; i++) sm[i+crypto_sign_BYTES] = msg[i];\n  return (crypto_sign_open(m, sm, sm.length, publicKey) >= 0);\n};\n\nnacl.sign.keyPair = function() {\n  var pk = new Uint8Array(crypto_sign_PUBLICKEYBYTES);\n  var sk = new Uint8Array(crypto_sign_SECRETKEYBYTES);\n  crypto_sign_keypair(pk, sk);\n  return {publicKey: pk, secretKey: sk};\n};\n\nnacl.sign.keyPair.fromSecretKey = function(secretKey) {\n  checkArrayTypes(secretKey);\n  if (secretKey.length !== crypto_sign_SECRETKEYBYTES)\n    throw new Error('bad secret key size');\n  var pk = new Uint8Array(crypto_sign_PUBLICKEYBYTES);\n  for (var i = 0; i < pk.length; i++) pk[i] = secretKey[32+i];\n  return {publicKey: pk, secretKey: new Uint8Array(secretKey)};\n};\n\nnacl.sign.keyPair.fromSeed = function(seed) {\n  checkArrayTypes(seed);\n  if (seed.length !== crypto_sign_SEEDBYTES)\n    throw new Error('bad seed size');\n  var pk = new Uint8Array(crypto_sign_PUBLICKEYBYTES);\n  var sk = new Uint8Array(crypto_sign_SECRETKEYBYTES);\n  for (var i = 0; i < 32; i++) sk[i] = seed[i];\n  crypto_sign_keypair(pk, sk, true);\n  return {publicKey: pk, secretKey: sk};\n};\n\nnacl.sign.publicKeyLength = crypto_sign_PUBLICKEYBYTES;\nnacl.sign.secretKeyLength = crypto_sign_SECRETKEYBYTES;\nnacl.sign.seedLength = crypto_sign_SEEDBYTES;\nnacl.sign.signatureLength = crypto_sign_BYTES;\n\nnacl.hash = function(msg) {\n  checkArrayTypes(msg);\n  var h = new Uint8Array(crypto_hash_BYTES);\n  crypto_hash(h, msg, msg.length);\n  return h;\n};\n\nnacl.hash.hashLength = crypto_hash_BYTES;\n\nnacl.verify = function(x, y) {\n  checkArrayTypes(x, y);\n  // Zero length arguments are considered not equal.\n  if (x.length === 0 || y.length === 0) return false;\n  if (x.length !== y.length) return false;\n  return (vn(x, 0, y, 0, x.length) === 0) ? true : false;\n};\n\nnacl.setPRNG = function(fn) {\n  randombytes = fn;\n};\n\n(function() {\n  // Initialize PRNG if environment provides CSPRNG.\n  // If not, methods calling randombytes will throw.\n  var crypto = typeof self !== 'undefined' ? (self.crypto || self.msCrypto) : null;\n  if (crypto && crypto.getRandomValues) {\n    // Browsers.\n    var QUOTA = 65536;\n    nacl.setPRNG(function(x, n) {\n      var i, v = new Uint8Array(n);\n      for (i = 0; i < n; i += QUOTA) {\n        crypto.getRandomValues(v.subarray(i, i + Math.min(n - i, QUOTA)));\n      }\n      for (i = 0; i < n; i++) x[i] = v[i];\n      cleanup(v);\n    });\n  } else if (typeof require !== 'undefined') {\n    // Node.js.\n    crypto = require('crypto');\n    if (crypto && crypto.randomBytes) {\n      nacl.setPRNG(function(x, n) {\n        var i, v = crypto.randomBytes(n);\n        for (i = 0; i < n; i++) x[i] = v[i];\n        cleanup(v);\n      });\n    }\n  }\n})();\n\n})(typeof module !== 'undefined' && module.exports ? module.exports : (self.nacl = self.nacl || {}));\n","module.exports = require('./pusher-with-encryption').default;\n","import ScriptReceiver from './script_receiver';\n\n/** Builds receivers for JSONP and Script requests.\n *\n * Each receiver is an object with following fields:\n * - number - unique (for the factory instance), numerical id of the receiver\n * - id - a string ID that can be used in DOM attributes\n * - name - name of the function triggering the receiver\n * - callback - callback function\n *\n * Receivers are triggered only once, on the first callback call.\n *\n * Receivers can be called by their name or by accessing factory object\n * by the number key.\n *\n * @param {String} prefix the prefix used in ids\n * @param {String} name the name of the object\n */\nexport class ScriptReceiverFactory {\n  lastId: number;\n  prefix: string;\n  name: string;\n\n  constructor(prefix: string, name: string) {\n    this.lastId = 0;\n    this.prefix = prefix;\n    this.name = name;\n  }\n\n  create(callback: Function): ScriptReceiver {\n    this.lastId++;\n\n    var number = this.lastId;\n    var id = this.prefix + number;\n    var name = this.name + '[' + number + ']';\n\n    var called = false;\n    var callbackWrapper = function() {\n      if (!called) {\n        callback.apply(null, arguments);\n        called = true;\n      }\n    };\n\n    this[number] = callbackWrapper;\n    return { number: number, id: id, name: name, callback: callbackWrapper };\n  }\n\n  remove(receiver: ScriptReceiver) {\n    delete this[receiver.number];\n  }\n}\n\nexport var ScriptReceivers = new ScriptReceiverFactory(\n  '_pusher_script_',\n  'Pusher.ScriptReceivers'\n);\n","import {\n  ChannelAuthorizationOptions,\n  UserAuthenticationOptions\n} from './auth/options';\nimport { AuthTransport } from './config';\n\nexport interface DefaultConfig {\n  VERSION: string;\n  PROTOCOL: number;\n  wsPort: number;\n  wssPort: number;\n  wsPath: string;\n  httpHost: string;\n  httpPort: number;\n  httpsPort: number;\n  httpPath: string;\n  stats_host: string;\n  authEndpoint: string;\n  authTransport: AuthTransport;\n  activityTimeout: number;\n  pongTimeout: number;\n  unavailableTimeout: number;\n  userAuthentication: UserAuthenticationOptions;\n  channelAuthorization: ChannelAuthorizationOptions;\n\n  cdn_http?: string;\n  cdn_https?: string;\n  dependency_suffix?: string;\n}\n\nvar Defaults: DefaultConfig = {\n  VERSION: VERSION,\n  PROTOCOL: 7,\n\n  wsPort: 80,\n  wssPort: 443,\n  wsPath: '',\n  // DEPRECATED: SockJS fallback parameters\n  httpHost: 'sockjs.pusher.com',\n  httpPort: 80,\n  httpsPort: 443,\n  httpPath: '/pusher',\n  // DEPRECATED: Stats\n  stats_host: 'stats.pusher.com',\n  // DEPRECATED: Other settings\n  authEndpoint: '/pusher/auth',\n  authTransport: 'ajax',\n  activityTimeout: 120000,\n  pongTimeout: 30000,\n  unavailableTimeout: 10000,\n  userAuthentication: {\n    endpoint: '/pusher/user-auth',\n    transport: 'ajax'\n  },\n  channelAuthorization: {\n    endpoint: '/pusher/auth',\n    transport: 'ajax'\n  },\n\n  // CDN configuration\n  cdn_http: CDN_HTTP,\n  cdn_https: CDN_HTTPS,\n  dependency_suffix: DEPENDENCY_SUFFIX\n};\n\nexport default Defaults;\n","import { ScriptReceiverFactory } from './script_receiver_factory';\nimport Defaults from 'core/defaults';\nimport DependencyLoader from './dependency_loader';\n\nexport var DependenciesReceivers = new ScriptReceiverFactory(\n  '_pusher_dependencies',\n  'Pusher.DependenciesReceivers'\n);\n\nexport var Dependencies = new DependencyLoader({\n  cdn_http: Defaults.cdn_http,\n  cdn_https: Defaults.cdn_https,\n  version: Defaults.VERSION,\n  suffix: Defaults.dependency_suffix,\n  receivers: DependenciesReceivers\n});\n","import {\n  ScriptReceivers,\n  ScriptReceiverFactory\n} from './script_receiver_factory';\nimport Runtime from 'runtime';\nimport ScriptRequest from './script_request';\n\n/** Handles loading dependency files.\n *\n * Dependency loaders don't remember whether a resource has been loaded or\n * not. It is caller's responsibility to make sure the resource is not loaded\n * twice. This is because it's impossible to detect resource loading status\n * without knowing its content.\n *\n * Options:\n * - cdn_http - url to HTTP CND\n * - cdn_https - url to HTTPS CDN\n * - version - version of pusher-js\n * - suffix - suffix appended to all names of dependency files\n *\n * @param {Object} options\n */\nexport default class DependencyLoader {\n  options: any;\n  receivers: ScriptReceiverFactory;\n  loading: any;\n\n  constructor(options: any) {\n    this.options = options;\n    this.receivers = options.receivers || ScriptReceivers;\n    this.loading = {};\n  }\n\n  /** Loads the dependency from CDN.\n   *\n   * @param  {String} name\n   * @param  {Function} callback\n   */\n  load(name: string, options: any, callback: Function) {\n    var self = this;\n\n    if (self.loading[name] && self.loading[name].length > 0) {\n      self.loading[name].push(callback);\n    } else {\n      self.loading[name] = [callback];\n\n      var request = Runtime.createScriptRequest(self.getPath(name, options));\n      var receiver = self.receivers.create(function(error) {\n        self.receivers.remove(receiver);\n\n        if (self.loading[name]) {\n          var callbacks = self.loading[name];\n          delete self.loading[name];\n\n          var successCallback = function(wasSuccessful) {\n            if (!wasSuccessful) {\n              request.cleanup();\n            }\n          };\n          for (var i = 0; i < callbacks.length; i++) {\n            callbacks[i](error, successCallback);\n          }\n        }\n      });\n      request.send(receiver);\n    }\n  }\n\n  /** Returns a root URL for pusher-js CDN.\n   *\n   * @returns {String}\n   */\n  getRoot(options: any): string {\n    var cdn;\n    var protocol = Runtime.getDocument().location.protocol;\n    if ((options && options.useTLS) || protocol === 'https:') {\n      cdn = this.options.cdn_https;\n    } else {\n      cdn = this.options.cdn_http;\n    }\n    // make sure there are no double slashes\n    return cdn.replace(/\\/*$/, '') + '/' + this.options.version;\n  }\n\n  /** Returns a full path to a dependency file.\n   *\n   * @param {String} name\n   * @returns {String}\n   */\n  getPath(name: string, options: any): string {\n    return this.getRoot(options) + '/' + name + this.options.suffix + '.js';\n  }\n}\n","/**\n * A place to store help URLs for error messages etc\n */\n\nconst urlStore = {\n  baseUrl: 'https://pusher.com',\n  urls: {\n    authenticationEndpoint: {\n      path: '/docs/channels/server_api/authenticating_users'\n    },\n    authorizationEndpoint: {\n      path: '/docs/channels/server_api/authorizing-users/'\n    },\n    javascriptQuickStart: {\n      path: '/docs/javascript_quick_start'\n    },\n    triggeringClientEvents: {\n      path: '/docs/client_api_guide/client_events#trigger-events'\n    },\n    encryptedChannelSupport: {\n      fullUrl:\n        'https://github.com/pusher/pusher-js/tree/cc491015371a4bde5743d1c87a0fbac0feb53195#encrypted-channel-support'\n    }\n  }\n};\n\n/** Builds a consistent string with links to pusher documentation\n *\n * @param {string} key - relevant key in the url_store.urls object\n * @return {string} suffix string to append to log message\n */\nconst buildLogSuffix = function(key: string): string {\n  const urlPrefix = 'See:';\n  const urlObj = urlStore.urls[key];\n  if (!urlObj) return '';\n\n  let url;\n  if (urlObj.fullUrl) {\n    url = urlObj.fullUrl;\n  } else if (urlObj.path) {\n    url = urlStore.baseUrl + urlObj.path;\n  }\n\n  if (!url) return '';\n  return `${urlPrefix} ${url}`;\n};\n\nexport default { buildLogSuffix };\n","export enum AuthRequestType {\n  UserAuthentication = 'user-authentication',\n  ChannelAuthorization = 'channel-authorization'\n}\n\nexport interface ChannelAuthorizationData {\n  auth: string;\n  channel_data?: string;\n  shared_secret?: string;\n}\n\nexport type ChannelAuthorizationCallback = (\n  error: Error | null,\n  authData: ChannelAuthorizationData | null\n) => void;\n\nexport interface ChannelAuthorizationRequestParams {\n  socketId: string;\n  channelName: string;\n}\n\nexport interface ChannelAuthorizationHandler {\n  (\n    params: ChannelAuthorizationRequestParams,\n    callback: ChannelAuthorizationCallback\n  ): void;\n}\n\nexport interface UserAuthenticationData {\n  auth: string;\n  user_data: string;\n}\n\nexport type UserAuthenticationCallback = (\n  error: Error | null,\n  authData: UserAuthenticationData | null\n) => void;\n\nexport interface UserAuthenticationRequestParams {\n  socketId: string;\n}\n\nexport interface UserAuthenticationHandler {\n  (\n    params: UserAuthenticationRequestParams,\n    callback: UserAuthenticationCallback\n  ): void;\n}\n\nexport type AuthTransportCallback =\n  | ChannelAuthorizationCallback\n  | UserAuthenticationCallback;\n\nexport interface AuthOptionsT<AuthHandler> {\n  transport: 'ajax' | 'jsonp';\n  endpoint: string;\n  params?: any;\n  headers?: any;\n  paramsProvider?: () => any;\n  headersProvider?: () => any;\n  customHandler?: AuthHandler;\n}\n\nexport declare type UserAuthenticationOptions = AuthOptionsT<\n  UserAuthenticationHandler\n>;\nexport declare type ChannelAuthorizationOptions = AuthOptionsT<\n  ChannelAuthorizationHandler\n>;\n\nexport interface InternalAuthOptions {\n  transport: 'ajax' | 'jsonp';\n  endpoint: string;\n  params?: any;\n  headers?: any;\n  paramsProvider?: () => any;\n  headersProvider?: () => any;\n}\n","/** Error classes used throughout the library. */\n// https://github.com/Microsoft/TypeScript-wiki/blob/master/Breaking-Changes.md#extending-built-ins-like-error-array-and-map-may-no-longer-work\nexport class BadEventName extends Error {\n  constructor(msg?: string) {\n    super(msg);\n\n    Object.setPrototypeOf(this, new.target.prototype);\n  }\n}\n\nexport class BadChannelName extends Error {\n  constructor(msg?: string) {\n    super(msg);\n\n    Object.setPrototypeOf(this, new.target.prototype);\n  }\n}\n\nexport class RequestTimedOut extends Error {\n  constructor(msg?: string) {\n    super(msg);\n\n    Object.setPrototypeOf(this, new.target.prototype);\n  }\n}\nexport class TransportPriorityTooLow extends Error {\n  constructor(msg?: string) {\n    super(msg);\n\n    Object.setPrototypeOf(this, new.target.prototype);\n  }\n}\nexport class TransportClosed extends Error {\n  constructor(msg?: string) {\n    super(msg);\n\n    Object.setPrototypeOf(this, new.target.prototype);\n  }\n}\nexport class UnsupportedFeature extends Error {\n  constructor(msg?: string) {\n    super(msg);\n\n    Object.setPrototypeOf(this, new.target.prototype);\n  }\n}\nexport class UnsupportedTransport extends Error {\n  constructor(msg?: string) {\n    super(msg);\n\n    Object.setPrototypeOf(this, new.target.prototype);\n  }\n}\nexport class UnsupportedStrategy extends Error {\n  constructor(msg?: string) {\n    super(msg);\n\n    Object.setPrototypeOf(this, new.target.prototype);\n  }\n}\nexport class HTTPAuthError extends Error {\n  status: number;\n  constructor(status: number, msg?: string) {\n    super(msg);\n    this.status = status;\n\n    Object.setPrototypeOf(this, new.target.prototype);\n  }\n}\n","import TimelineSender from 'core/timeline/timeline_sender';\nimport * as Collections from 'core/utils/collections';\nimport Util from 'core/util';\nimport Runtime from 'runtime';\nimport { AuthTransport } from 'core/auth/auth_transports';\nimport AbstractRuntime from 'runtimes/interface';\nimport UrlStore from 'core/utils/url_store';\nimport {\n  AuthRequestType,\n  AuthTransportCallback,\n  InternalAuthOptions\n} from 'core/auth/options';\nimport { HTTPAuthError } from 'core/errors';\n\nconst ajax: AuthTransport = function(\n  context: AbstractRuntime,\n  query: string,\n  authOptions: InternalAuthOptions,\n  authRequestType: AuthRequestType,\n  callback: AuthTransportCallback\n) {\n  const xhr = Runtime.createXHR();\n  xhr.open('POST', authOptions.endpoint, true);\n\n  // add request headers\n  xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');\n  for (var headerName in authOptions.headers) {\n    xhr.setRequestHeader(headerName, authOptions.headers[headerName]);\n  }\n  if (authOptions.headersProvider != null) {\n    let dynamicHeaders = authOptions.headersProvider();\n    for (var headerName in dynamicHeaders) {\n      xhr.setRequestHeader(headerName, dynamicHeaders[headerName]);\n    }\n  }\n\n  xhr.onreadystatechange = function() {\n    if (xhr.readyState === 4) {\n      if (xhr.status === 200) {\n        let data;\n        let parsed = false;\n\n        try {\n          data = JSON.parse(xhr.responseText);\n          parsed = true;\n        } catch (e) {\n          callback(\n            new HTTPAuthError(\n              200,\n              `JSON returned from ${authRequestType.toString()} endpoint was invalid, yet status code was 200. Data was: ${\n                xhr.responseText\n              }`\n            ),\n            null\n          );\n        }\n\n        if (parsed) {\n          // prevents double execution.\n          callback(null, data);\n        }\n      } else {\n        let suffix = '';\n        switch (authRequestType) {\n          case AuthRequestType.UserAuthentication:\n            suffix = UrlStore.buildLogSuffix('authenticationEndpoint');\n            break;\n          case AuthRequestType.ChannelAuthorization:\n            suffix = `Clients must be authorized to join private or presence channels. ${UrlStore.buildLogSuffix(\n              'authorizationEndpoint'\n            )}`;\n            break;\n        }\n        callback(\n          new HTTPAuthError(\n            xhr.status,\n            `Unable to retrieve auth string from ${authRequestType.toString()} endpoint - ` +\n              `received status: ${xhr.status} from ${authOptions.endpoint}. ${suffix}`\n          ),\n          null\n        );\n      }\n    }\n  };\n\n  xhr.send(query);\n  return xhr;\n};\n\nexport default ajax;\n","export default function encode(s: any): string {\n  return btoa(utob(s));\n}\n\nvar fromCharCode = String.fromCharCode;\n\nvar b64chars =\n  'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';\nvar b64tab = {};\n\nfor (var i = 0, l = b64chars.length; i < l; i++) {\n  b64tab[b64chars.charAt(i)] = i;\n}\n\nvar cb_utob = function(c) {\n  var cc = c.charCodeAt(0);\n  return cc < 0x80\n    ? c\n    : cc < 0x800\n    ? fromCharCode(0xc0 | (cc >>> 6)) + fromCharCode(0x80 | (cc & 0x3f))\n    : fromCharCode(0xe0 | ((cc >>> 12) & 0x0f)) +\n      fromCharCode(0x80 | ((cc >>> 6) & 0x3f)) +\n      fromCharCode(0x80 | (cc & 0x3f));\n};\n\nvar utob = function(u) {\n  return u.replace(/[^\\x00-\\x7F]/g, cb_utob);\n};\n\nvar cb_encode = function(ccc) {\n  var padlen = [0, 2, 1][ccc.length % 3];\n  var ord =\n    (ccc.charCodeAt(0) << 16) |\n    ((ccc.length > 1 ? ccc.charCodeAt(1) : 0) << 8) |\n    (ccc.length > 2 ? ccc.charCodeAt(2) : 0);\n  var chars = [\n    b64chars.charAt(ord >>> 18),\n    b64chars.charAt((ord >>> 12) & 63),\n    padlen >= 2 ? '=' : b64chars.charAt((ord >>> 6) & 63),\n    padlen >= 1 ? '=' : b64chars.charAt(ord & 63)\n  ];\n  return chars.join('');\n};\n\nvar btoa =\n  global.btoa ||\n  function(b) {\n    return b.replace(/[\\s\\S]{1,3}/g, cb_encode);\n  };\n","import TimedCallback from './timed_callback';\nimport { Delay, Scheduler, Canceller } from './scheduling';\n\nabstract class Timer {\n  protected clear: Canceller;\n  protected timer: number | void;\n\n  constructor(\n    set: Scheduler,\n    clear: Canceller,\n    delay: Delay,\n    callback: TimedCallback\n  ) {\n    this.clear = clear;\n    this.timer = set(() => {\n      if (this.timer) {\n        this.timer = callback(this.timer);\n      }\n    }, delay);\n  }\n\n  /** Returns whether the timer is still running.\n   *\n   * @return {Boolean}\n   */\n  isRunning(): boolean {\n    return this.timer !== null;\n  }\n\n  /** Aborts a timer when it's running. */\n  ensureAborted() {\n    if (this.timer) {\n      this.clear(this.timer);\n      this.timer = null;\n    }\n  }\n}\n\nexport default Timer;\n","import Timer from './abstract_timer';\nimport TimedCallback from './timed_callback';\nimport { Delay } from './scheduling';\n\n// We need to bind clear functions this way to avoid exceptions on IE8\nfunction clearTimeout(timer) {\n  global.clearTimeout(timer);\n}\nfunction clearInterval(timer) {\n  global.clearInterval(timer);\n}\n\n/** Cross-browser compatible one-off timer abstraction.\n *\n * @param {Number} delay\n * @param {Function} callback\n */\nexport class OneOffTimer extends Timer {\n  constructor(delay: Delay, callback: TimedCallback) {\n    super(setTimeout, clearTimeout, delay, function(timer) {\n      callback();\n      return null;\n    });\n  }\n}\n\n/** Cross-browser compatible periodic timer abstraction.\n *\n * @param {Number} delay\n * @param {Function} callback\n */\nexport class PeriodicTimer extends Timer {\n  constructor(delay: Delay, callback: TimedCallback) {\n    super(setInterval, clearInterval, delay, function(timer) {\n      callback();\n      return timer;\n    });\n  }\n}\n","import * as Collections from './utils/collections';\nimport TimedCallback from './utils/timers/timed_callback';\nimport { OneOffTimer, PeriodicTimer } from './utils/timers';\n\nvar Util = {\n  now(): number {\n    if (Date.now) {\n      return Date.now();\n    } else {\n      return new Date().valueOf();\n    }\n  },\n\n  defer(callback: TimedCallback): OneOffTimer {\n    return new OneOffTimer(0, callback);\n  },\n\n  /** Builds a function that will proxy a method call to its first argument.\n   *\n   * Allows partial application of arguments, so additional arguments are\n   * prepended to the argument list.\n   *\n   * @param  {String} name method name\n   * @return {Function} proxy function\n   */\n  method(name: string, ...args: any[]): Function {\n    var boundArguments = Array.prototype.slice.call(arguments, 1);\n    return function(object) {\n      return object[name].apply(object, boundArguments.concat(arguments));\n    };\n  }\n};\n\nexport default Util;\n","import base64encode from '../base64';\nimport Util from '../util';\n\n/** Merges multiple objects into the target argument.\n *\n * For properties that are plain Objects, performs a deep-merge. For the\n * rest it just copies the value of the property.\n *\n * To extend prototypes use it as following:\n *   Pusher.Util.extend(Target.prototype, Base.prototype)\n *\n * You can also use it to merge objects without altering them:\n *   Pusher.Util.extend({}, object1, object2)\n *\n * @param  {Object} target\n * @return {Object} the target argument\n */\nexport function extend<T>(target: any, ...sources: any[]): T {\n  for (var i = 0; i < sources.length; i++) {\n    var extensions = sources[i];\n    for (var property in extensions) {\n      if (\n        extensions[property] &&\n        extensions[property].constructor &&\n        extensions[property].constructor === Object\n      ) {\n        target[property] = extend(target[property] || {}, extensions[property]);\n      } else {\n        target[property] = extensions[property];\n      }\n    }\n  }\n  return target;\n}\n\nexport function stringify(): string {\n  var m = ['Pusher'];\n  for (var i = 0; i < arguments.length; i++) {\n    if (typeof arguments[i] === 'string') {\n      m.push(arguments[i]);\n    } else {\n      m.push(safeJSONStringify(arguments[i]));\n    }\n  }\n  return m.join(' : ');\n}\n\nexport function arrayIndexOf(array: any[], item: any): number {\n  // MSIE doesn't have array.indexOf\n  var nativeIndexOf = Array.prototype.indexOf;\n  if (array === null) {\n    return -1;\n  }\n  if (nativeIndexOf && array.indexOf === nativeIndexOf) {\n    return array.indexOf(item);\n  }\n  for (var i = 0, l = array.length; i < l; i++) {\n    if (array[i] === item) {\n      return i;\n    }\n  }\n  return -1;\n}\n\n/** Applies a function f to all properties of an object.\n *\n * Function f gets 3 arguments passed:\n * - element from the object\n * - key of the element\n * - reference to the object\n *\n * @param {Object} object\n * @param {Function} f\n */\nexport function objectApply(object: any, f: Function) {\n  for (var key in object) {\n    if (Object.prototype.hasOwnProperty.call(object, key)) {\n      f(object[key], key, object);\n    }\n  }\n}\n\n/** Return a list of objects own proerty keys\n *\n * @param {Object} object\n * @returns {Array}\n */\nexport function keys(object: any): string[] {\n  var keys = [];\n  objectApply(object, function(_, key) {\n    keys.push(key);\n  });\n  return keys;\n}\n\n/** Return a list of object's own property values\n *\n * @param {Object} object\n * @returns {Array}\n */\nexport function values(object: any): any[] {\n  var values = [];\n  objectApply(object, function(value) {\n    values.push(value);\n  });\n  return values;\n}\n\n/** Applies a function f to all elements of an array.\n *\n * Function f gets 3 arguments passed:\n * - element from the array\n * - index of the element\n * - reference to the array\n *\n * @param {Array} array\n * @param {Function} f\n */\nexport function apply(array: any[], f: Function, context?: any) {\n  for (var i = 0; i < array.length; i++) {\n    f.call(context || global, array[i], i, array);\n  }\n}\n\n/** Maps all elements of the array and returns the result.\n *\n * Function f gets 4 arguments passed:\n * - element from the array\n * - index of the element\n * - reference to the source array\n * - reference to the destination array\n *\n * @param {Array} array\n * @param {Function} f\n */\nexport function map(array: any[], f: Function): any[] {\n  var result = [];\n  for (var i = 0; i < array.length; i++) {\n    result.push(f(array[i], i, array, result));\n  }\n  return result;\n}\n\n/** Maps all elements of the object and returns the result.\n *\n * Function f gets 4 arguments passed:\n * - element from the object\n * - key of the element\n * - reference to the source object\n * - reference to the destination object\n *\n * @param {Object} object\n * @param {Function} f\n */\nexport function mapObject(object: any, f: Function): any {\n  var result = {};\n  objectApply(object, function(value, key) {\n    result[key] = f(value);\n  });\n  return result;\n}\n\n/** Filters elements of the array using a test function.\n *\n * Function test gets 4 arguments passed:\n * - element from the array\n * - index of the element\n * - reference to the source array\n * - reference to the destination array\n *\n * @param {Array} array\n * @param {Function} f\n */\nexport function filter(array: any[], test: Function): any[] {\n  test =\n    test ||\n    function(value) {\n      return !!value;\n    };\n\n  var result = [];\n  for (var i = 0; i < array.length; i++) {\n    if (test(array[i], i, array, result)) {\n      result.push(array[i]);\n    }\n  }\n  return result;\n}\n\n/** Filters properties of the object using a test function.\n *\n * Function test gets 4 arguments passed:\n * - element from the object\n * - key of the element\n * - reference to the source object\n * - reference to the destination object\n *\n * @param {Object} object\n * @param {Function} f\n */\nexport function filterObject(object: Object, test: Function) {\n  var result = {};\n  objectApply(object, function(value, key) {\n    if ((test && test(value, key, object, result)) || Boolean(value)) {\n      result[key] = value;\n    }\n  });\n  return result;\n}\n\n/** Flattens an object into a two-dimensional array.\n *\n * @param  {Object} object\n * @return {Array} resulting array of [key, value] pairs\n */\nexport function flatten(object: Object): any[] {\n  var result = [];\n  objectApply(object, function(value, key) {\n    result.push([key, value]);\n  });\n  return result;\n}\n\n/** Checks whether any element of the array passes the test.\n *\n * Function test gets 3 arguments passed:\n * - element from the array\n * - index of the element\n * - reference to the source array\n *\n * @param {Array} array\n * @param {Function} f\n */\nexport function any(array: any[], test: Function): boolean {\n  for (var i = 0; i < array.length; i++) {\n    if (test(array[i], i, array)) {\n      return true;\n    }\n  }\n  return false;\n}\n\n/** Checks whether all elements of the array pass the test.\n *\n * Function test gets 3 arguments passed:\n * - element from the array\n * - index of the element\n * - reference to the source array\n *\n * @param {Array} array\n * @param {Function} f\n */\nexport function all(array: any[], test: Function): boolean {\n  for (var i = 0; i < array.length; i++) {\n    if (!test(array[i], i, array)) {\n      return false;\n    }\n  }\n  return true;\n}\n\nexport function encodeParamsObject(data): string {\n  return mapObject(data, function(value) {\n    if (typeof value === 'object') {\n      value = safeJSONStringify(value);\n    }\n    return encodeURIComponent(base64encode(value.toString()));\n  });\n}\n\nexport function buildQueryString(data: any): string {\n  var params = filterObject(data, function(value) {\n    return value !== undefined;\n  });\n\n  var query = map(\n    flatten(encodeParamsObject(params)),\n    Util.method('join', '=')\n  ).join('&');\n\n  return query;\n}\n\n/**\n * See https://github.com/douglascrockford/JSON-js/blob/master/cycle.js\n *\n * Remove circular references from an object. Required for JSON.stringify in\n * React Native, which tends to blow up a lot.\n *\n * @param  {any} object\n * @return {any}        Decycled object\n */\nexport function decycleObject(object: any): any {\n  var objects = [],\n    paths = [];\n\n  return (function derez(value, path) {\n    var i, name, nu;\n\n    switch (typeof value) {\n      case 'object':\n        if (!value) {\n          return null;\n        }\n        for (i = 0; i < objects.length; i += 1) {\n          if (objects[i] === value) {\n            return { $ref: paths[i] };\n          }\n        }\n\n        objects.push(value);\n        paths.push(path);\n\n        if (Object.prototype.toString.apply(value) === '[object Array]') {\n          nu = [];\n          for (i = 0; i < value.length; i += 1) {\n            nu[i] = derez(value[i], path + '[' + i + ']');\n          }\n        } else {\n          nu = {};\n          for (name in value) {\n            if (Object.prototype.hasOwnProperty.call(value, name)) {\n              nu[name] = derez(\n                value[name],\n                path + '[' + JSON.stringify(name) + ']'\n              );\n            }\n          }\n        }\n        return nu;\n      case 'number':\n      case 'string':\n      case 'boolean':\n        return value;\n    }\n  })(object, '$');\n}\n\n/**\n * Provides a cross-browser and cross-platform way to safely stringify objects\n * into JSON. This is particularly necessary for ReactNative, where circular JSON\n * structures throw an exception.\n *\n * @param  {any}    source The object to stringify\n * @return {string}        The serialized output.\n */\nexport function safeJSONStringify(source: any): string {\n  try {\n    return JSON.stringify(source);\n  } catch (e) {\n    return JSON.stringify(decycleObject(source));\n  }\n}\n","import { stringify } from './utils/collections';\nimport Pusher from './pusher';\n\nclass Logger {\n  debug(...args: any[]) {\n    this.log(this.globalLog, args);\n  }\n\n  warn(...args: any[]) {\n    this.log(this.globalLogWarn, args);\n  }\n\n  error(...args: any[]) {\n    this.log(this.globalLogError, args);\n  }\n\n  private globalLog = (message: string) => {\n    if (global.console && global.console.log) {\n      global.console.log(message);\n    }\n  };\n\n  private globalLogWarn(message: string) {\n    if (global.console && global.console.warn) {\n      global.console.warn(message);\n    } else {\n      this.globalLog(message);\n    }\n  }\n\n  private globalLogError(message: string) {\n    if (global.console && global.console.error) {\n      global.console.error(message);\n    } else {\n      this.globalLogWarn(message);\n    }\n  }\n\n  private log(\n    defaultLoggingFunction: (message: string) => void,\n    ...args: any[]\n  ) {\n    var message = stringify.apply(this, arguments);\n    if (Pusher.log) {\n      Pusher.log(message);\n    } else if (Pusher.logToConsole) {\n      const log = defaultLoggingFunction.bind(this);\n      log(message);\n    }\n  }\n}\n\nexport default new Logger();\n","import Browser from '../browser';\nimport Logger from 'core/logger';\nimport JSONPRequest from '../dom/jsonp_request';\nimport { ScriptReceivers } from '../dom/script_receiver_factory';\nimport { AuthTransport } from 'core/auth/auth_transports';\nimport {\n  AuthRequestType,\n  AuthTransportCallback,\n  InternalAuthOptions\n} from 'core/auth/options';\n\nvar jsonp: AuthTransport = function(\n  context: Browser,\n  query: string,\n  authOptions: InternalAuthOptions,\n  authRequestType: AuthRequestType,\n  callback: AuthTransportCallback\n) {\n  if (\n    authOptions.headers !== undefined ||\n    authOptions.headersProvider != null\n  ) {\n    Logger.warn(\n      `To send headers with the ${authRequestType.toString()} request, you must use AJAX, rather than JSONP.`\n    );\n  }\n\n  var callbackName = context.nextAuthCallbackID.toString();\n  context.nextAuthCallbackID++;\n\n  var document = context.getDocument();\n  var script = document.createElement('script');\n  // Hacked wrapper.\n  context.auth_callbacks[callbackName] = function(data) {\n    callback(null, data);\n  };\n\n  var callback_name = \"Pusher.auth_callbacks['\" + callbackName + \"']\";\n  script.src =\n    authOptions.endpoint +\n    '?callback=' +\n    encodeURIComponent(callback_name) +\n    '&' +\n    query;\n\n  var head =\n    document.getElementsByTagName('head')[0] || document.documentElement;\n  head.insertBefore(script, head.firstChild);\n};\n\nexport default jsonp;\n","import ScriptReceiver from './script_receiver';\n\n/** Sends a generic HTTP GET request using a script tag.\n *\n * By constructing URL in a specific way, it can be used for loading\n * JavaScript resources or JSONP requests. It can notify about errors, but\n * only in certain environments. Please take care of monitoring the state of\n * the request yourself.\n *\n * @param {String} src\n */\nexport default class ScriptRequest {\n  src: string;\n  script: any;\n  errorScript: any;\n\n  constructor(src: string) {\n    this.src = src;\n  }\n\n  send(receiver: ScriptReceiver) {\n    var self = this;\n    var errorString = 'Error loading ' + self.src;\n\n    self.script = document.createElement('script');\n    self.script.id = receiver.id;\n    self.script.src = self.src;\n    self.script.type = 'text/javascript';\n    self.script.charset = 'UTF-8';\n\n    if (self.script.addEventListener) {\n      self.script.onerror = function() {\n        receiver.callback(errorString);\n      };\n      self.script.onload = function() {\n        receiver.callback(null);\n      };\n    } else {\n      self.script.onreadystatechange = function() {\n        if (\n          self.script.readyState === 'loaded' ||\n          self.script.readyState === 'complete'\n        ) {\n          receiver.callback(null);\n        }\n      };\n    }\n\n    // Opera<11.6 hack for missing onerror callback\n    if (\n      self.script.async === undefined &&\n      (<any>document).attachEvent &&\n      /opera/i.test(navigator.userAgent)\n    ) {\n      self.errorScript = document.createElement('script');\n      self.errorScript.id = receiver.id + '_error';\n      self.errorScript.text = receiver.name + \"('\" + errorString + \"');\";\n      self.script.async = self.errorScript.async = false;\n    } else {\n      self.script.async = true;\n    }\n\n    var head = document.getElementsByTagName('head')[0];\n    head.insertBefore(self.script, head.firstChild);\n    if (self.errorScript) {\n      head.insertBefore(self.errorScript, self.script.nextSibling);\n    }\n  }\n\n  /** Cleans up the DOM remains of the script request. */\n  cleanup() {\n    if (this.script) {\n      this.script.onload = this.script.onerror = null;\n      this.script.onreadystatechange = null;\n    }\n    if (this.script && this.script.parentNode) {\n      this.script.parentNode.removeChild(this.script);\n    }\n    if (this.errorScript && this.errorScript.parentNode) {\n      this.errorScript.parentNode.removeChild(this.errorScript);\n    }\n    this.script = null;\n    this.errorScript = null;\n  }\n}\n","import ScriptReceiver from './script_receiver';\nimport ScriptRequest from './script_request';\nimport * as Collections from 'core/utils/collections';\nimport Util from 'core/util';\nimport Runtime from '../runtime';\n\n/** Sends data via JSONP.\n *\n * Data is a key-value map. Its values are JSON-encoded and then passed\n * through base64. Finally, keys and encoded values are appended to the query\n * string.\n *\n * The class itself does not guarantee raising errors on failures, as it's not\n * possible to support such feature on all browsers. Instead, JSONP endpoint\n * should call back in a way that's easy to distinguish from browser calls,\n * for example by passing a second argument to the receiver.\n *\n * @param {String} url\n * @param {Object} data key-value map of data to be submitted\n */\nexport default class JSONPRequest {\n  url: string;\n  data: any;\n  request: ScriptRequest;\n\n  constructor(url: string, data: any) {\n    this.url = url;\n    this.data = data;\n  }\n\n  /** Sends the actual JSONP request.\n   *\n   * @param {ScriptReceiver} receiver\n   */\n  send(receiver: ScriptReceiver) {\n    if (this.request) {\n      return;\n    }\n\n    var query = Collections.buildQueryString(this.data);\n    var url = this.url + '/' + receiver.number + '?' + query;\n    this.request = Runtime.createScriptRequest(url);\n    this.request.send(receiver);\n  }\n\n  /** Cleans up the DOM remains of the JSONP request. */\n  cleanup() {\n    if (this.request) {\n      this.request.cleanup();\n    }\n  }\n}\n","import TimelineSender from 'core/timeline/timeline_sender';\nimport TimelineTransport from 'core/timeline/timeline_transport';\nimport Browser from 'runtime';\nimport { AuthTransport } from 'core/auth/auth_transports';\nimport { ScriptReceivers } from '../dom/script_receiver_factory';\n\nvar getAgent = function(sender: TimelineSender, useTLS: boolean) {\n  return function(data: any, callback: Function) {\n    var scheme = 'http' + (useTLS ? 's' : '') + '://';\n    var url =\n      scheme + (sender.host || sender.options.host) + sender.options.path;\n    var request = Browser.createJSONPRequest(url, data);\n\n    var receiver = Browser.ScriptReceivers.create(function(error, result) {\n      ScriptReceivers.remove(receiver);\n      request.cleanup();\n\n      if (result && result.host) {\n        sender.host = result.host;\n      }\n      if (callback) {\n        callback(error, result);\n      }\n    });\n    request.send(receiver);\n  };\n};\n\nvar jsonp = {\n  name: 'jsonp',\n  getAgent\n};\n\nexport default jsonp;\n","import Defaults from '../defaults';\nimport { default as URLScheme, URLSchemeParams } from './url_scheme';\n\nfunction getGenericURL(\n  baseScheme: string,\n  params: URLSchemeParams,\n  path: string\n): string {\n  var scheme = baseScheme + (params.useTLS ? 's' : '');\n  var host = params.useTLS ? params.hostTLS : params.hostNonTLS;\n  return scheme + '://' + host + path;\n}\n\nfunction getGenericPath(key: string, queryString?: string): string {\n  var path = '/app/' + key;\n  var query =\n    '?protocol=' +\n    Defaults.PROTOCOL +\n    '&client=js' +\n    '&version=' +\n    Defaults.VERSION +\n    (queryString ? '&' + queryString : '');\n  return path + query;\n}\n\nexport var ws: URLScheme = {\n  getInitial: function(key: string, params: URLSchemeParams): string {\n    var path = (params.httpPath || '') + getGenericPath(key, 'flash=false');\n    return getGenericURL('ws', params, path);\n  }\n};\n\nexport var http: URLScheme = {\n  getInitial: function(key: string, params: URLSchemeParams): string {\n    var path = (params.httpPath || '/pusher') + getGenericPath(key);\n    return getGenericURL('http', params, path);\n  }\n};\n\nexport var sockjs: URLScheme = {\n  getInitial: function(key: string, params: URLSchemeParams): string {\n    return getGenericURL('http', params, params.httpPath || '/pusher');\n  },\n  getPath: function(key: string, params: URLSchemeParams): string {\n    return getGenericPath(key);\n  }\n};\n","import Callback from './callback';\nimport * as Collections from '../utils/collections';\nimport CallbackTable from './callback_table';\n\nexport default class CallbackRegistry {\n  _callbacks: CallbackTable;\n\n  constructor() {\n    this._callbacks = {};\n  }\n\n  get(name: string): Callback[] {\n    return this._callbacks[prefix(name)];\n  }\n\n  add(name: string, callback: Function, context: any) {\n    var prefixedEventName = prefix(name);\n    this._callbacks[prefixedEventName] =\n      this._callbacks[prefixedEventName] || [];\n    this._callbacks[prefixedEventName].push({\n      fn: callback,\n      context: context\n    });\n  }\n\n  remove(name?: string, callback?: Function, context?: any) {\n    if (!name && !callback && !context) {\n      this._callbacks = {};\n      return;\n    }\n\n    var names = name ? [prefix(name)] : Collections.keys(this._callbacks);\n\n    if (callback || context) {\n      this.removeCallback(names, callback, context);\n    } else {\n      this.removeAllCallbacks(names);\n    }\n  }\n\n  private removeCallback(names: string[], callback: Function, context: any) {\n    Collections.apply(\n      names,\n      function(name) {\n        this._callbacks[name] = Collections.filter(\n          this._callbacks[name] || [],\n          function(binding) {\n            return (\n              (callback && callback !== binding.fn) ||\n              (context && context !== binding.context)\n            );\n          }\n        );\n        if (this._callbacks[name].length === 0) {\n          delete this._callbacks[name];\n        }\n      },\n      this\n    );\n  }\n\n  private removeAllCallbacks(names: string[]) {\n    Collections.apply(\n      names,\n      function(name) {\n        delete this._callbacks[name];\n      },\n      this\n    );\n  }\n}\n\nfunction prefix(name: string): string {\n  return '_' + name;\n}\n","import * as Collections from '../utils/collections';\nimport Callback from './callback';\nimport Metadata from '../channels/metadata';\nimport CallbackRegistry from './callback_registry';\n\n/** Manages callback bindings and event emitting.\n *\n * @param Function failThrough called when no listeners are bound to an event\n */\nexport default class Dispatcher {\n  callbacks: CallbackRegistry;\n  global_callbacks: Function[];\n  failThrough: Function;\n\n  constructor(failThrough?: Function) {\n    this.callbacks = new CallbackRegistry();\n    this.global_callbacks = [];\n    this.failThrough = failThrough;\n  }\n\n  bind(eventName: string, callback: Function, context?: any) {\n    this.callbacks.add(eventName, callback, context);\n    return this;\n  }\n\n  bind_global(callback: Function) {\n    this.global_callbacks.push(callback);\n    return this;\n  }\n\n  unbind(eventName?: string, callback?: Function, context?: any) {\n    this.callbacks.remove(eventName, callback, context);\n    return this;\n  }\n\n  unbind_global(callback?: Function) {\n    if (!callback) {\n      this.global_callbacks = [];\n      return this;\n    }\n\n    this.global_callbacks = Collections.filter(\n      this.global_callbacks || [],\n      c => c !== callback\n    );\n\n    return this;\n  }\n\n  unbind_all() {\n    this.unbind();\n    this.unbind_global();\n    return this;\n  }\n\n  emit(eventName: string, data?: any, metadata?: Metadata): Dispatcher {\n    for (var i = 0; i < this.global_callbacks.length; i++) {\n      this.global_callbacks[i](eventName, data);\n    }\n\n    var callbacks = this.callbacks.get(eventName);\n    var args = [];\n\n    if (metadata) {\n      // if there's a metadata argument, we need to call the callback with both\n      // data and metadata regardless of whether data is undefined\n      args.push(data, metadata);\n    } else if (data) {\n      // metadata is undefined, so we only need to call the callback with data\n      // if data exists\n      args.push(data);\n    }\n\n    if (callbacks && callbacks.length > 0) {\n      for (var i = 0; i < callbacks.length; i++) {\n        callbacks[i].fn.apply(callbacks[i].context || global, args);\n      }\n    } else if (this.failThrough) {\n      this.failThrough(eventName, data);\n    }\n\n    return this;\n  }\n}\n","import Util from '../util';\nimport * as Collections from '../utils/collections';\nimport { default as EventsDispatcher } from '../events/dispatcher';\nimport Logger from '../logger';\nimport TransportHooks from './transport_hooks';\nimport Socket from '../socket';\nimport Runtime from 'runtime';\nimport Timeline from '../timeline/timeline';\nimport TransportConnectionOptions from './transport_connection_options';\n\n/** Provides universal API for transport connections.\n *\n * Transport connection is a low-level object that wraps a connection method\n * and exposes a simple evented interface for the connection state and\n * messaging. It does not implement Pusher-specific WebSocket protocol.\n *\n * Additionally, it fetches resources needed for transport to work and exposes\n * an interface for querying transport features.\n *\n * States:\n * - new - initial state after constructing the object\n * - initializing - during initialization phase, usually fetching resources\n * - intialized - ready to establish a connection\n * - connection - when connection is being established\n * - open - when connection ready to be used\n * - closed - after connection was closed be either side\n *\n * Emits:\n * - error - after the connection raised an error\n *\n * Options:\n * - useTLS - whether connection should be over TLS\n * - hostTLS - host to connect to when connection is over TLS\n * - hostNonTLS - host to connect to when connection is over TLS\n *\n * @param {String} key application key\n * @param {Object} options\n */\nexport default class TransportConnection extends EventsDispatcher {\n  hooks: TransportHooks;\n  name: string;\n  priority: number;\n  key: string;\n  options: TransportConnectionOptions;\n  state: string;\n  timeline: Timeline;\n  activityTimeout: number;\n  id: number;\n  socket: Socket;\n  beforeOpen: Function;\n  initialize: Function;\n\n  constructor(\n    hooks: TransportHooks,\n    name: string,\n    priority: number,\n    key: string,\n    options: TransportConnectionOptions\n  ) {\n    super();\n    this.initialize = Runtime.transportConnectionInitializer;\n    this.hooks = hooks;\n    this.name = name;\n    this.priority = priority;\n    this.key = key;\n    this.options = options;\n\n    this.state = 'new';\n    this.timeline = options.timeline;\n    this.activityTimeout = options.activityTimeout;\n    this.id = this.timeline.generateUniqueID();\n  }\n\n  /** Checks whether the transport handles activity checks by itself.\n   *\n   * @return {Boolean}\n   */\n  handlesActivityChecks(): boolean {\n    return Boolean(this.hooks.handlesActivityChecks);\n  }\n\n  /** Checks whether the transport supports the ping/pong API.\n   *\n   * @return {Boolean}\n   */\n  supportsPing(): boolean {\n    return Boolean(this.hooks.supportsPing);\n  }\n\n  /** Tries to establish a connection.\n   *\n   * @returns {Boolean} false if transport is in invalid state\n   */\n  connect(): boolean {\n    if (this.socket || this.state !== 'initialized') {\n      return false;\n    }\n\n    var url = this.hooks.urls.getInitial(this.key, this.options);\n    try {\n      this.socket = this.hooks.getSocket(url, this.options);\n    } catch (e) {\n      Util.defer(() => {\n        this.onError(e);\n        this.changeState('closed');\n      });\n      return false;\n    }\n\n    this.bindListeners();\n\n    Logger.debug('Connecting', { transport: this.name, url });\n    this.changeState('connecting');\n    return true;\n  }\n\n  /** Closes the connection.\n   *\n   * @return {Boolean} true if there was a connection to close\n   */\n  close(): boolean {\n    if (this.socket) {\n      this.socket.close();\n      return true;\n    } else {\n      return false;\n    }\n  }\n\n  /** Sends data over the open connection.\n   *\n   * @param {String} data\n   * @return {Boolean} true only when in the \"open\" state\n   */\n  send(data: any): boolean {\n    if (this.state === 'open') {\n      // Workaround for MobileSafari bug (see https://gist.github.com/2052006)\n      Util.defer(() => {\n        if (this.socket) {\n          this.socket.send(data);\n        }\n      });\n      return true;\n    } else {\n      return false;\n    }\n  }\n\n  /** Sends a ping if the connection is open and transport supports it. */\n  ping() {\n    if (this.state === 'open' && this.supportsPing()) {\n      this.socket.ping();\n    }\n  }\n\n  private onOpen() {\n    if (this.hooks.beforeOpen) {\n      this.hooks.beforeOpen(\n        this.socket,\n        this.hooks.urls.getPath(this.key, this.options)\n      );\n    }\n    this.changeState('open');\n    this.socket.onopen = undefined;\n  }\n\n  private onError(error) {\n    this.emit('error', { type: 'WebSocketError', error: error });\n    this.timeline.error(this.buildTimelineMessage({ error: error.toString() }));\n  }\n\n  private onClose(closeEvent?: any) {\n    if (closeEvent) {\n      this.changeState('closed', {\n        code: closeEvent.code,\n        reason: closeEvent.reason,\n        wasClean: closeEvent.wasClean\n      });\n    } else {\n      this.changeState('closed');\n    }\n    this.unbindListeners();\n    this.socket = undefined;\n  }\n\n  private onMessage(message) {\n    this.emit('message', message);\n  }\n\n  private onActivity() {\n    this.emit('activity');\n  }\n\n  private bindListeners() {\n    this.socket.onopen = () => {\n      this.onOpen();\n    };\n    this.socket.onerror = error => {\n      this.onError(error);\n    };\n    this.socket.onclose = closeEvent => {\n      this.onClose(closeEvent);\n    };\n    this.socket.onmessage = message => {\n      this.onMessage(message);\n    };\n\n    if (this.supportsPing()) {\n      this.socket.onactivity = () => {\n        this.onActivity();\n      };\n    }\n  }\n\n  private unbindListeners() {\n    if (this.socket) {\n      this.socket.onopen = undefined;\n      this.socket.onerror = undefined;\n      this.socket.onclose = undefined;\n      this.socket.onmessage = undefined;\n      if (this.supportsPing()) {\n        this.socket.onactivity = undefined;\n      }\n    }\n  }\n\n  private changeState(state: string, params?: any) {\n    this.state = state;\n    this.timeline.info(\n      this.buildTimelineMessage({\n        state: state,\n        params: params\n      })\n    );\n    this.emit(state, params);\n  }\n\n  buildTimelineMessage(message): any {\n    return Collections.extend({ cid: this.id }, message);\n  }\n}\n","import Factory from '../utils/factory';\nimport TransportHooks from './transport_hooks';\nimport TransportConnection from './transport_connection';\nimport TransportConnectionOptions from './transport_connection_options';\n\n/** Provides interface for transport connection instantiation.\n *\n * Takes transport-specific hooks as the only argument, which allow checking\n * for transport support and creating its connections.\n *\n * Supported hooks: * - file - the name of the file to be fetched during initialization\n * - urls - URL scheme to be used by transport\n * - handlesActivityCheck - true when the transport handles activity checks\n * - supportsPing - true when the transport has a ping/activity API\n * - isSupported - tells whether the transport is supported in the environment\n * - getSocket - creates a WebSocket-compatible transport socket\n *\n * See transports.js for specific implementations.\n *\n * @param {Object} hooks object containing all needed transport hooks\n */\nexport default class Transport {\n  hooks: TransportHooks;\n\n  constructor(hooks: TransportHooks) {\n    this.hooks = hooks;\n  }\n\n  /** Returns whether the transport is supported in the environment.\n   *\n   * @param {Object} envronment te environment details (encryption, settings)\n   * @returns {Boolean} true when the transport is supported\n   */\n  isSupported(environment: any): boolean {\n    return this.hooks.isSupported(environment);\n  }\n\n  /** Creates a transport connection.\n   *\n   * @param {String} name\n   * @param {Number} priority\n   * @param {String} key the application key\n   * @param {Object} options\n   * @returns {TransportConnection}\n   */\n  createConnection(\n    name: string,\n    priority: number,\n    key: string,\n    options: any\n  ): TransportConnection {\n    return new TransportConnection(this.hooks, name, priority, key, options);\n  }\n}\n","import * as URLSchemes from 'core/transports/url_schemes';\nimport URLScheme from 'core/transports/url_scheme';\nimport Transport from 'core/transports/transport';\nimport Util from 'core/util';\nimport * as Collections from 'core/utils/collections';\nimport TransportHooks from 'core/transports/transport_hooks';\nimport TransportsTable from 'core/transports/transports_table';\nimport Runtime from 'runtime';\n\n/** WebSocket transport.\n *\n * Uses native WebSocket implementation, including MozWebSocket supported by\n * earlier Firefox versions.\n */\nvar WSTransport = new Transport(<TransportHooks>{\n  urls: URLSchemes.ws,\n  handlesActivityChecks: false,\n  supportsPing: false,\n\n  isInitialized: function() {\n    return Boolean(Runtime.getWebSocketAPI());\n  },\n  isSupported: function(): boolean {\n    return Boolean(Runtime.getWebSocketAPI());\n  },\n  getSocket: function(url) {\n    return Runtime.createWebSocket(url);\n  }\n});\n\nvar httpConfiguration = {\n  urls: URLSchemes.http,\n  handlesActivityChecks: false,\n  supportsPing: true,\n  isInitialized: function() {\n    return true;\n  }\n};\n\nexport var streamingConfiguration = Collections.extend(\n  {\n    getSocket: function(url) {\n      return Runtime.HTTPFactory.createStreamingSocket(url);\n    }\n  },\n  httpConfiguration\n);\nexport var pollingConfiguration = Collections.extend(\n  {\n    getSocket: function(url) {\n      return Runtime.HTTPFactory.createPollingSocket(url);\n    }\n  },\n  httpConfiguration\n);\n\nvar xhrConfiguration = {\n  isSupported: function(): boolean {\n    return Runtime.isXHRSupported();\n  }\n};\n\n/** HTTP streaming transport using CORS-enabled XMLHttpRequest. */\nvar XHRStreamingTransport = new Transport(\n  <TransportHooks>(\n    Collections.extend({}, streamingConfiguration, xhrConfiguration)\n  )\n);\n\n/** HTTP long-polling transport using CORS-enabled XMLHttpRequest. */\nvar XHRPollingTransport = new Transport(\n  <TransportHooks>Collections.extend({}, pollingConfiguration, xhrConfiguration)\n);\n\nvar Transports: TransportsTable = {\n  ws: WSTransport,\n  xhr_streaming: XHRStreamingTransport,\n  xhr_polling: XHRPollingTransport\n};\n\nexport default Transports;\n","import {\n  default as Transports,\n  streamingConfiguration,\n  pollingConfiguration\n} from 'isomorphic/transports/transports';\nimport Transport from 'core/transports/transport';\nimport TransportHooks from 'core/transports/transport_hooks';\nimport * as URLSchemes from 'core/transports/url_schemes';\nimport Runtime from 'runtime';\nimport { Dependencies } from '../dom/dependencies';\nimport * as Collections from 'core/utils/collections';\n\nvar SockJSTransport = new Transport(<TransportHooks>{\n  file: 'sockjs',\n  urls: URLSchemes.sockjs,\n  handlesActivityChecks: true,\n  supportsPing: false,\n\n  isSupported: function() {\n    return true;\n  },\n  isInitialized: function() {\n    return window.SockJS !== undefined;\n  },\n  getSocket: function(url, options) {\n    return new window.SockJS(url, null, {\n      js_path: Dependencies.getPath('sockjs', {\n        useTLS: options.useTLS\n      }),\n      ignore_null_origin: options.ignoreNullOrigin\n    });\n  },\n  beforeOpen: function(socket, path) {\n    socket.send(\n      JSON.stringify({\n        path: path\n      })\n    );\n  }\n});\n\nvar xdrConfiguration = {\n  isSupported: function(environment): boolean {\n    var yes = Runtime.isXDRSupported(environment.useTLS);\n    return yes;\n  }\n};\n\n/** HTTP streaming transport using XDomainRequest (IE 8,9). */\nvar XDRStreamingTransport = new Transport(\n  <TransportHooks>(\n    Collections.extend({}, streamingConfiguration, xdrConfiguration)\n  )\n);\n\n/** HTTP long-polling transport using XDomainRequest (IE 8,9). */\nvar XDRPollingTransport = new Transport(\n  <TransportHooks>Collections.extend({}, pollingConfiguration, xdrConfiguration)\n);\n\nTransports.xdr_streaming = XDRStreamingTransport;\nTransports.xdr_polling = XDRPollingTransport;\nTransports.sockjs = SockJSTransport;\n\nexport default Transports;\n","import Reachability from 'core/reachability';\nimport { default as EventsDispatcher } from 'core/events/dispatcher';\n\n/** Really basic interface providing network availability info.\n *\n * Emits:\n * - online - when browser goes online\n * - offline - when browser goes offline\n */\nexport class NetInfo extends EventsDispatcher implements Reachability {\n  constructor() {\n    super();\n    var self = this;\n    // This is okay, as IE doesn't support this stuff anyway.\n    if (window.addEventListener !== undefined) {\n      window.addEventListener(\n        'online',\n        function() {\n          self.emit('online');\n        },\n        false\n      );\n      window.addEventListener(\n        'offline',\n        function() {\n          self.emit('offline');\n        },\n        false\n      );\n    }\n  }\n\n  /** Returns whether browser is online or not\n   *\n   * Offline means definitely offline (no connection to router).\n   * Inverse does NOT mean definitely online (only currently supported in Safari\n   * and even there only means the device has a connection to the router).\n   *\n   * @return {Boolean}\n   */\n  isOnline(): boolean {\n    if (window.navigator.onLine === undefined) {\n      return true;\n    } else {\n      return window.navigator.onLine;\n    }\n  }\n}\n\nexport var Network = new NetInfo();\n","import Util from '../util';\nimport * as Collections from '../utils/collections';\nimport TransportManager from './transport_manager';\nimport TransportConnection from './transport_connection';\nimport Transport from './transport';\nimport PingDelayOptions from './ping_delay_options';\n\n/** Creates transport connections monitored by a transport manager.\n *\n * When a transport is closed, it might mean the environment does not support\n * it. It's possible that messages get stuck in an intermediate buffer or\n * proxies terminate inactive connections. To combat these problems,\n * assistants monitor the connection lifetime, report unclean exits and\n * adjust ping timeouts to keep the connection active. The decision to disable\n * a transport is the manager's responsibility.\n *\n * @param {TransportManager} manager\n * @param {TransportConnection} transport\n * @param {Object} options\n */\nexport default class AssistantToTheTransportManager {\n  manager: TransportManager;\n  transport: Transport;\n  minPingDelay: number;\n  maxPingDelay: number;\n  pingDelay: number;\n\n  constructor(\n    manager: TransportManager,\n    transport: Transport,\n    options: PingDelayOptions\n  ) {\n    this.manager = manager;\n    this.transport = transport;\n    this.minPingDelay = options.minPingDelay;\n    this.maxPingDelay = options.maxPingDelay;\n    this.pingDelay = undefined;\n  }\n\n  /** Creates a transport connection.\n   *\n   * This function has the same API as Transport#createConnection.\n   *\n   * @param {String} name\n   * @param {Number} priority\n   * @param {String} key the application key\n   * @param {Object} options\n   * @returns {TransportConnection}\n   */\n  createConnection(\n    name: string,\n    priority: number,\n    key: string,\n    options: Object\n  ): TransportConnection {\n    options = Collections.extend({}, options, {\n      activityTimeout: this.pingDelay\n    });\n    var connection = this.transport.createConnection(\n      name,\n      priority,\n      key,\n      options\n    );\n\n    var openTimestamp = null;\n\n    var onOpen = function() {\n      connection.unbind('open', onOpen);\n      connection.bind('closed', onClosed);\n      openTimestamp = Util.now();\n    };\n    var onClosed = closeEvent => {\n      connection.unbind('closed', onClosed);\n\n      if (closeEvent.code === 1002 || closeEvent.code === 1003) {\n        // we don't want to use transports not obeying the protocol\n        this.manager.reportDeath();\n      } else if (!closeEvent.wasClean && openTimestamp) {\n        // report deaths only for short-living transport\n        var lifespan = Util.now() - openTimestamp;\n        if (lifespan < 2 * this.maxPingDelay) {\n          this.manager.reportDeath();\n          this.pingDelay = Math.max(lifespan / 2, this.minPingDelay);\n        }\n      }\n    };\n\n    connection.bind('open', onOpen);\n    return connection;\n  }\n\n  /** Returns whether the transport is supported in the environment.\n   *\n   * This function has the same API as Transport#isSupported. Might return false\n   * when the manager decides to kill the transport.\n   *\n   * @param {Object} environment the environment details (encryption, settings)\n   * @returns {Boolean} true when the transport is supported\n   */\n  isSupported(environment: string): boolean {\n    return this.manager.isAlive() && this.transport.isSupported(environment);\n  }\n}\n","import Action from './action';\nimport { PusherEvent } from './message-types';\n/**\n * Provides functions for handling Pusher protocol-specific messages.\n */\n\nconst Protocol = {\n  /**\n   * Decodes a message in a Pusher format.\n   *\n   * The MessageEvent we receive from the transport should contain a pusher event\n   * (https://pusher.com/docs/pusher_protocol#events) serialized as JSON in the\n   * data field\n   *\n   * The pusher event may contain a data field too, and it may also be\n   * serialised as JSON\n   *\n   * Throws errors when messages are not parse'able.\n   *\n   * @param  {MessageEvent} messageEvent\n   * @return {PusherEvent}\n   */\n  decodeMessage: function(messageEvent: MessageEvent): PusherEvent {\n    try {\n      var messageData = JSON.parse(messageEvent.data);\n      var pusherEventData = messageData.data;\n      if (typeof pusherEventData === 'string') {\n        try {\n          pusherEventData = JSON.parse(messageData.data);\n        } catch (e) {}\n      }\n      var pusherEvent: PusherEvent = {\n        event: messageData.event,\n        channel: messageData.channel,\n        data: pusherEventData\n      };\n      if (messageData.user_id) {\n        pusherEvent.user_id = messageData.user_id;\n      }\n      return pusherEvent;\n    } catch (e) {\n      throw { type: 'MessageParseError', error: e, data: messageEvent.data };\n    }\n  },\n\n  /**\n   * Encodes a message to be sent.\n   *\n   * @param  {PusherEvent} event\n   * @return {String}\n   */\n  encodeMessage: function(event: PusherEvent): string {\n    return JSON.stringify(event);\n  },\n\n  /**\n   * Processes a handshake message and returns appropriate actions.\n   *\n   * Returns an object with an 'action' and other action-specific properties.\n   *\n   * There are three outcomes when calling this function. First is a successful\n   * connection attempt, when pusher:connection_established is received, which\n   * results in a 'connected' action with an 'id' property. When passed a\n   * pusher:error event, it returns a result with action appropriate to the\n   * close code and an error. Otherwise, it raises an exception.\n   *\n   * @param {String} message\n   * @result Object\n   */\n  processHandshake: function(messageEvent: MessageEvent): Action {\n    var message = Protocol.decodeMessage(messageEvent);\n\n    if (message.event === 'pusher:connection_established') {\n      if (!message.data.activity_timeout) {\n        throw 'No activity timeout specified in handshake';\n      }\n      return {\n        action: 'connected',\n        id: message.data.socket_id,\n        activityTimeout: message.data.activity_timeout * 1000\n      };\n    } else if (message.event === 'pusher:error') {\n      // From protocol 6 close codes are sent only once, so this only\n      // happens when connection does not support close codes\n      return {\n        action: this.getCloseAction(message.data),\n        error: this.getCloseError(message.data)\n      };\n    } else {\n      throw 'Invalid handshake';\n    }\n  },\n\n  /**\n   * Dispatches the close event and returns an appropriate action name.\n   *\n   * See:\n   * 1. https://developer.mozilla.org/en-US/docs/WebSockets/WebSockets_reference/CloseEvent\n   * 2. http://pusher.com/docs/pusher_protocol\n   *\n   * @param  {CloseEvent} closeEvent\n   * @return {String} close action name\n   */\n  getCloseAction: function(closeEvent): string {\n    if (closeEvent.code < 4000) {\n      // ignore 1000 CLOSE_NORMAL, 1001 CLOSE_GOING_AWAY,\n      //        1005 CLOSE_NO_STATUS, 1006 CLOSE_ABNORMAL\n      // ignore 1007...3999\n      // handle 1002 CLOSE_PROTOCOL_ERROR, 1003 CLOSE_UNSUPPORTED,\n      //        1004 CLOSE_TOO_LARGE\n      if (closeEvent.code >= 1002 && closeEvent.code <= 1004) {\n        return 'backoff';\n      } else {\n        return null;\n      }\n    } else if (closeEvent.code === 4000) {\n      return 'tls_only';\n    } else if (closeEvent.code < 4100) {\n      return 'refused';\n    } else if (closeEvent.code < 4200) {\n      return 'backoff';\n    } else if (closeEvent.code < 4300) {\n      return 'retry';\n    } else {\n      // unknown error\n      return 'refused';\n    }\n  },\n\n  /**\n   * Returns an error or null basing on the close event.\n   *\n   * Null is returned when connection was closed cleanly. Otherwise, an object\n   * with error details is returned.\n   *\n   * @param  {CloseEvent} closeEvent\n   * @return {Object} error object\n   */\n  getCloseError: function(closeEvent): any {\n    if (closeEvent.code !== 1000 && closeEvent.code !== 1001) {\n      return {\n        type: 'PusherError',\n        data: {\n          code: closeEvent.code,\n          message: closeEvent.reason || closeEvent.message\n        }\n      };\n    } else {\n      return null;\n    }\n  }\n};\n\nexport default Protocol;\n","import * as Collections from '../utils/collections';\nimport { default as EventsDispatcher } from '../events/dispatcher';\nimport Protocol from './protocol/protocol';\nimport { PusherEvent } from './protocol/message-types';\nimport Logger from '../logger';\nimport TransportConnection from '../transports/transport_connection';\nimport Socket from '../socket';\n/**\n * Provides Pusher protocol interface for transports.\n *\n * Emits following events:\n * - message - on received messages\n * - ping - on ping requests\n * - pong - on pong responses\n * - error - when the transport emits an error\n * - closed - after closing the transport\n *\n * It also emits more events when connection closes with a code.\n * See Protocol.getCloseAction to get more details.\n *\n * @param {Number} id\n * @param {AbstractTransport} transport\n */\nexport default class Connection extends EventsDispatcher implements Socket {\n  id: string;\n  transport: TransportConnection;\n  activityTimeout: number;\n\n  constructor(id: string, transport: TransportConnection) {\n    super();\n    this.id = id;\n    this.transport = transport;\n    this.activityTimeout = transport.activityTimeout;\n    this.bindListeners();\n  }\n\n  /** Returns whether used transport handles activity checks by itself\n   *\n   * @returns {Boolean} true if activity checks are handled by the transport\n   */\n  handlesActivityChecks() {\n    return this.transport.handlesActivityChecks();\n  }\n\n  /** Sends raw data.\n   *\n   * @param {String} data\n   */\n  send(data: any): boolean {\n    return this.transport.send(data);\n  }\n\n  /** Sends an event.\n   *\n   * @param {String} name\n   * @param {String} data\n   * @param {String} [channel]\n   * @returns {Boolean} whether message was sent or not\n   */\n  send_event(name: string, data: any, channel?: string): boolean {\n    var event: PusherEvent = { event: name, data: data };\n    if (channel) {\n      event.channel = channel;\n    }\n    Logger.debug('Event sent', event);\n    return this.send(Protocol.encodeMessage(event));\n  }\n\n  /** Sends a ping message to the server.\n   *\n   * Basing on the underlying transport, it might send either transport's\n   * protocol-specific ping or pusher:ping event.\n   */\n  ping() {\n    if (this.transport.supportsPing()) {\n      this.transport.ping();\n    } else {\n      this.send_event('pusher:ping', {});\n    }\n  }\n\n  /** Closes the connection. */\n  close() {\n    this.transport.close();\n  }\n\n  private bindListeners() {\n    var listeners = {\n      message: (messageEvent: MessageEvent) => {\n        var pusherEvent;\n        try {\n          pusherEvent = Protocol.decodeMessage(messageEvent);\n        } catch (e) {\n          this.emit('error', {\n            type: 'MessageParseError',\n            error: e,\n            data: messageEvent.data\n          });\n        }\n\n        if (pusherEvent !== undefined) {\n          Logger.debug('Event recd', pusherEvent);\n\n          switch (pusherEvent.event) {\n            case 'pusher:error':\n              this.emit('error', {\n                type: 'PusherError',\n                data: pusherEvent.data\n              });\n              break;\n            case 'pusher:ping':\n              this.emit('ping');\n              break;\n            case 'pusher:pong':\n              this.emit('pong');\n              break;\n          }\n          this.emit('message', pusherEvent);\n        }\n      },\n      activity: () => {\n        this.emit('activity');\n      },\n      error: error => {\n        this.emit('error', error);\n      },\n      closed: closeEvent => {\n        unbindListeners();\n\n        if (closeEvent && closeEvent.code) {\n          this.handleCloseEvent(closeEvent);\n        }\n\n        this.transport = null;\n        this.emit('closed');\n      }\n    };\n\n    var unbindListeners = () => {\n      Collections.objectApply(listeners, (listener, event) => {\n        this.transport.unbind(event, listener);\n      });\n    };\n\n    Collections.objectApply(listeners, (listener, event) => {\n      this.transport.bind(event, listener);\n    });\n  }\n\n  private handleCloseEvent(closeEvent: any) {\n    var action = Protocol.getCloseAction(closeEvent);\n    var error = Protocol.getCloseError(closeEvent);\n    if (error) {\n      this.emit('error', error);\n    }\n    if (action) {\n      this.emit(action, { action: action, error: error });\n    }\n  }\n}\n","import Util from '../../util';\nimport * as Collections from '../../utils/collections';\nimport Protocol from '../protocol/protocol';\nimport Connection from '../connection';\nimport TransportConnection from '../../transports/transport_connection';\nimport HandshakePayload from './handshake_payload';\n\n/**\n * Handles Pusher protocol handshakes for transports.\n *\n * Calls back with a result object after handshake is completed. Results\n * always have two fields:\n * - action - string describing action to be taken after the handshake\n * - transport - the transport object passed to the constructor\n *\n * Different actions can set different additional properties on the result.\n * In the case of 'connected' action, there will be a 'connection' property\n * containing a Connection object for the transport. Other actions should\n * carry an 'error' property.\n *\n * @param {AbstractTransport} transport\n * @param {Function} callback\n */\nexport default class Handshake {\n  transport: TransportConnection;\n  callback: (HandshakePayload) => void;\n  onMessage: Function;\n  onClosed: Function;\n\n  constructor(\n    transport: TransportConnection,\n    callback: (HandshakePayload) => void\n  ) {\n    this.transport = transport;\n    this.callback = callback;\n    this.bindListeners();\n  }\n\n  close() {\n    this.unbindListeners();\n    this.transport.close();\n  }\n\n  private bindListeners() {\n    this.onMessage = m => {\n      this.unbindListeners();\n\n      var result;\n      try {\n        result = Protocol.processHandshake(m);\n      } catch (e) {\n        this.finish('error', { error: e });\n        this.transport.close();\n        return;\n      }\n\n      if (result.action === 'connected') {\n        this.finish('connected', {\n          connection: new Connection(result.id, this.transport),\n          activityTimeout: result.activityTimeout\n        });\n      } else {\n        this.finish(result.action, { error: result.error });\n        this.transport.close();\n      }\n    };\n\n    this.onClosed = closeEvent => {\n      this.unbindListeners();\n\n      var action = Protocol.getCloseAction(closeEvent) || 'backoff';\n      var error = Protocol.getCloseError(closeEvent);\n      this.finish(action, { error: error });\n    };\n\n    this.transport.bind('message', this.onMessage);\n    this.transport.bind('closed', this.onClosed);\n  }\n\n  private unbindListeners() {\n    this.transport.unbind('message', this.onMessage);\n    this.transport.unbind('closed', this.onClosed);\n  }\n\n  private finish(action: string, params: any) {\n    this.callback(\n      Collections.extend({ transport: this.transport, action: action }, params)\n    );\n  }\n}\n","import * as Collections from '../utils/collections';\nimport Util from '../util';\nimport base64encode from '../base64';\nimport Timeline from './timeline';\nimport Runtime from 'runtime';\n\nexport interface TimelineSenderOptions {\n  host?: string;\n  port?: number;\n  path?: string;\n}\n\nexport default class TimelineSender {\n  timeline: Timeline;\n  options: TimelineSenderOptions;\n  host: string;\n\n  constructor(timeline: Timeline, options: TimelineSenderOptions) {\n    this.timeline = timeline;\n    this.options = options || {};\n  }\n\n  send(useTLS: boolean, callback?: Function) {\n    if (this.timeline.isEmpty()) {\n      return;\n    }\n\n    this.timeline.send(\n      Runtime.TimelineTransport.getAgent(this, useTLS),\n      callback\n    );\n  }\n}\n","import { default as EventsDispatcher } from '../events/dispatcher';\nimport * as Errors from '../errors';\nimport Logger from '../logger';\nimport Pusher from '../pusher';\nimport { PusherEvent } from '../connection/protocol/message-types';\nimport Metadata from './metadata';\nimport UrlStore from '../utils/url_store';\nimport {\n  ChannelAuthorizationData,\n  ChannelAuthorizationCallback\n} from '../auth/options';\nimport { HTTPAuthError } from '../errors';\n\n/** Provides base public channel interface with an event emitter.\n *\n * Emits:\n * - pusher:subscription_succeeded - after subscribing successfully\n * - other non-internal events\n *\n * @param {String} name\n * @param {Pusher} pusher\n */\nexport default class Channel extends EventsDispatcher {\n  name: string;\n  pusher: Pusher;\n  subscribed: boolean;\n  subscriptionPending: boolean;\n  subscriptionCancelled: boolean;\n  subscriptionCount: null;\n\n  constructor(name: string, pusher: Pusher) {\n    super(function(event, data) {\n      Logger.debug('No callbacks on ' + name + ' for ' + event);\n    });\n\n    this.name = name;\n    this.pusher = pusher;\n    this.subscribed = false;\n    this.subscriptionPending = false;\n    this.subscriptionCancelled = false;\n  }\n\n  /** Skips authorization, since public channels don't require it.\n   *\n   * @param {Function} callback\n   */\n  authorize(socketId: string, callback: ChannelAuthorizationCallback) {\n    return callback(null, { auth: '' });\n  }\n\n  /** Triggers an event */\n  trigger(event: string, data: any) {\n    if (event.indexOf('client-') !== 0) {\n      throw new Errors.BadEventName(\n        \"Event '\" + event + \"' does not start with 'client-'\"\n      );\n    }\n    if (!this.subscribed) {\n      var suffix = UrlStore.buildLogSuffix('triggeringClientEvents');\n      Logger.warn(\n        `Client event triggered before channel 'subscription_succeeded' event . ${suffix}`\n      );\n    }\n    return this.pusher.send_event(event, data, this.name);\n  }\n\n  /** Signals disconnection to the channel. For internal use only. */\n  disconnect() {\n    this.subscribed = false;\n    this.subscriptionPending = false;\n  }\n\n  /** Handles a PusherEvent. For internal use only.\n   *\n   * @param {PusherEvent} event\n   */\n  handleEvent(event: PusherEvent) {\n    var eventName = event.event;\n    var data = event.data;\n    if (eventName === 'pusher_internal:subscription_succeeded') {\n      this.handleSubscriptionSucceededEvent(event);\n    } else if (eventName === 'pusher_internal:subscription_count') {\n      this.handleSubscriptionCountEvent(event);\n    } else if (eventName.indexOf('pusher_internal:') !== 0) {\n      var metadata: Metadata = {};\n      this.emit(eventName, data, metadata);\n    }\n  }\n\n  handleSubscriptionSucceededEvent(event: PusherEvent) {\n    this.subscriptionPending = false;\n    this.subscribed = true;\n    if (this.subscriptionCancelled) {\n      this.pusher.unsubscribe(this.name);\n    } else {\n      this.emit('pusher:subscription_succeeded', event.data);\n    }\n  }\n\n  handleSubscriptionCountEvent(event: PusherEvent) {\n    if (event.data.subscription_count) {\n      this.subscriptionCount = event.data.subscription_count;\n    }\n\n    this.emit('pusher:subscription_count', event.data);\n  }\n\n  /** Sends a subscription request. For internal use only. */\n  subscribe() {\n    if (this.subscribed) {\n      return;\n    }\n    this.subscriptionPending = true;\n    this.subscriptionCancelled = false;\n    this.authorize(\n      this.pusher.connection.socket_id,\n      (error: Error | null, data: ChannelAuthorizationData) => {\n        if (error) {\n          this.subscriptionPending = false;\n          // Why not bind to 'pusher:subscription_error' a level up, and log there?\n          // Binding to this event would cause the warning about no callbacks being\n          // bound (see constructor) to be suppressed, that's not what we want.\n          Logger.error(error.toString());\n          this.emit(\n            'pusher:subscription_error',\n            Object.assign(\n              {},\n              {\n                type: 'AuthError',\n                error: error.message\n              },\n              error instanceof HTTPAuthError ? { status: error.status } : {}\n            )\n          );\n        } else {\n          this.pusher.send_event('pusher:subscribe', {\n            auth: data.auth,\n            channel_data: data.channel_data,\n            channel: this.name\n          });\n        }\n      }\n    );\n  }\n\n  /** Sends an unsubscription request. For internal use only. */\n  unsubscribe() {\n    this.subscribed = false;\n    this.pusher.send_event('pusher:unsubscribe', {\n      channel: this.name\n    });\n  }\n\n  /** Cancels an in progress subscription. For internal use only. */\n  cancelSubscription() {\n    this.subscriptionCancelled = true;\n  }\n\n  /** Reinstates an in progress subscripiton. For internal use only. */\n  reinstateSubscription() {\n    this.subscriptionCancelled = false;\n  }\n}\n","import Factory from '../utils/factory';\nimport Channel from './channel';\nimport { ChannelAuthorizationCallback } from '../auth/options';\n\n/** Extends public channels to provide private channel interface.\n *\n * @param {String} name\n * @param {Pusher} pusher\n */\nexport default class PrivateChannel extends Channel {\n  /** Authorizes the connection to use the channel.\n   *\n   * @param  {String} socketId\n   * @param  {Function} callback\n   */\n  authorize(socketId: string, callback: ChannelAuthorizationCallback) {\n    return this.pusher.config.channelAuthorizer(\n      {\n        channelName: this.name,\n        socketId: socketId\n      },\n      callback\n    );\n  }\n}\n","import * as Collections from '../utils/collections';\n\n/** Represents a collection of members of a presence channel. */\nexport default class Members {\n  members: any;\n  count: number;\n  myID: any;\n  me: any;\n\n  constructor() {\n    this.reset();\n  }\n\n  /** Returns member's info for given id.\n   *\n   * Resulting object containts two fields - id and info.\n   *\n   * @param {Number} id\n   * @return {Object} member's info or null\n   */\n  get(id: string): any {\n    if (Object.prototype.hasOwnProperty.call(this.members, id)) {\n      return {\n        id: id,\n        info: this.members[id]\n      };\n    } else {\n      return null;\n    }\n  }\n\n  /** Calls back for each member in unspecified order.\n   *\n   * @param  {Function} callback\n   */\n  each(callback: Function) {\n    Collections.objectApply(this.members, (member, id) => {\n      callback(this.get(id));\n    });\n  }\n\n  /** Updates the id for connected member. For internal use only. */\n  setMyID(id: string) {\n    this.myID = id;\n  }\n\n  /** Handles subscription data. For internal use only. */\n  onSubscription(subscriptionData: any) {\n    this.members = subscriptionData.presence.hash;\n    this.count = subscriptionData.presence.count;\n    this.me = this.get(this.myID);\n  }\n\n  /** Adds a new member to the collection. For internal use only. */\n  addMember(memberData: any) {\n    if (this.get(memberData.user_id) === null) {\n      this.count++;\n    }\n    this.members[memberData.user_id] = memberData.user_info;\n    return this.get(memberData.user_id);\n  }\n\n  /** Adds a member from the collection. For internal use only. */\n  removeMember(memberData: any) {\n    var member = this.get(memberData.user_id);\n    if (member) {\n      delete this.members[memberData.user_id];\n      this.count--;\n    }\n    return member;\n  }\n\n  /** Resets the collection to the initial state. For internal use only. */\n  reset() {\n    this.members = {};\n    this.count = 0;\n    this.myID = null;\n    this.me = null;\n  }\n}\n","import PrivateChannel from './private_channel';\nimport Logger from '../logger';\nimport Members from './members';\nimport Pusher from '../pusher';\nimport UrlStore from 'core/utils/url_store';\nimport { PusherEvent } from '../connection/protocol/message-types';\nimport Metadata from './metadata';\nimport { ChannelAuthorizationData } from '../auth/options';\n\nexport default class PresenceChannel extends PrivateChannel {\n  members: Members;\n\n  /** Adds presence channel functionality to private channels.\n   *\n   * @param {String} name\n   * @param {Pusher} pusher\n   */\n  constructor(name: string, pusher: Pusher) {\n    super(name, pusher);\n    this.members = new Members();\n  }\n\n  /** Authorizes the connection as a member of the channel.\n   *\n   * @param  {String} socketId\n   * @param  {Function} callback\n   */\n  authorize(socketId: string, callback: Function) {\n    super.authorize(socketId, async (error, authData) => {\n      if (!error) {\n        authData = authData as ChannelAuthorizationData;\n        if (authData.channel_data != null) {\n          var channelData = JSON.parse(authData.channel_data);\n          this.members.setMyID(channelData.user_id);\n        } else {\n          await this.pusher.user.signinDonePromise;\n          if (this.pusher.user.user_data != null) {\n            // If the user is signed in, get the id of the authenticated user\n            // and allow the presence authorization to continue.\n            this.members.setMyID(this.pusher.user.user_data.id);\n          } else {\n            let suffix = UrlStore.buildLogSuffix('authorizationEndpoint');\n            Logger.error(\n              `Invalid auth response for channel '${this.name}', ` +\n                `expected 'channel_data' field. ${suffix}, ` +\n                `or the user should be signed in.`\n            );\n            callback('Invalid auth response');\n            return;\n          }\n        }\n      }\n      callback(error, authData);\n    });\n  }\n\n  /** Handles presence and subscription events. For internal use only.\n   *\n   * @param {PusherEvent} event\n   */\n  handleEvent(event: PusherEvent) {\n    var eventName = event.event;\n    if (eventName.indexOf('pusher_internal:') === 0) {\n      this.handleInternalEvent(event);\n    } else {\n      var data = event.data;\n      var metadata: Metadata = {};\n      if (event.user_id) {\n        metadata.user_id = event.user_id;\n      }\n      this.emit(eventName, data, metadata);\n    }\n  }\n  handleInternalEvent(event: PusherEvent) {\n    var eventName = event.event;\n    var data = event.data;\n    switch (eventName) {\n      case 'pusher_internal:subscription_succeeded':\n        this.handleSubscriptionSucceededEvent(event);\n        break;\n      case 'pusher_internal:subscription_count':\n        this.handleSubscriptionCountEvent(event);\n        break;\n      case 'pusher_internal:member_added':\n        var addedMember = this.members.addMember(data);\n        this.emit('pusher:member_added', addedMember);\n        break;\n      case 'pusher_internal:member_removed':\n        var removedMember = this.members.removeMember(data);\n        if (removedMember) {\n          this.emit('pusher:member_removed', removedMember);\n        }\n        break;\n    }\n  }\n\n  handleSubscriptionSucceededEvent(event: PusherEvent) {\n    this.subscriptionPending = false;\n    this.subscribed = true;\n    if (this.subscriptionCancelled) {\n      this.pusher.unsubscribe(this.name);\n    } else {\n      this.members.onSubscription(event.data);\n      this.emit('pusher:subscription_succeeded', this.members);\n    }\n  }\n\n  /** Resets the channel state, including members map. For internal use only. */\n  disconnect() {\n    this.members.reset();\n    super.disconnect();\n  }\n}\n","import PrivateChannel from './private_channel';\nimport * as Errors from '../errors';\nimport Logger from '../logger';\nimport Pusher from '../pusher';\nimport { decode as encodeUTF8 } from '@stablelib/utf8';\nimport { decode as decodeBase64 } from '@stablelib/base64';\nimport Dispatcher from '../events/dispatcher';\nimport { PusherEvent } from '../connection/protocol/message-types';\nimport {\n  ChannelAuthorizationData,\n  ChannelAuthorizationCallback\n} from '../auth/options';\nimport * as nacl from 'tweetnacl';\n\n/** Extends private channels to provide encrypted channel interface.\n *\n * @param {String} name\n * @param {Pusher} pusher\n */\nexport default class EncryptedChannel extends PrivateChannel {\n  key: Uint8Array = null;\n  nacl: nacl;\n\n  constructor(name: string, pusher: Pusher, nacl: nacl) {\n    super(name, pusher);\n    this.nacl = nacl;\n  }\n\n  /** Authorizes the connection to use the channel.\n   *\n   * @param  {String} socketId\n   * @param  {Function} callback\n   */\n  authorize(socketId: string, callback: ChannelAuthorizationCallback) {\n    super.authorize(\n      socketId,\n      (error: Error | null, authData: ChannelAuthorizationData) => {\n        if (error) {\n          callback(error, authData);\n          return;\n        }\n        let sharedSecret = authData['shared_secret'];\n        if (!sharedSecret) {\n          callback(\n            new Error(\n              `No shared_secret key in auth payload for encrypted channel: ${this.name}`\n            ),\n            null\n          );\n          return;\n        }\n        this.key = decodeBase64(sharedSecret);\n        delete authData['shared_secret'];\n        callback(null, authData);\n      }\n    );\n  }\n\n  trigger(event: string, data: any): boolean {\n    throw new Errors.UnsupportedFeature(\n      'Client events are not currently supported for encrypted channels'\n    );\n  }\n\n  /** Handles an event. For internal use only.\n   *\n   * @param {PusherEvent} event\n   */\n  handleEvent(event: PusherEvent) {\n    var eventName = event.event;\n    var data = event.data;\n    if (\n      eventName.indexOf('pusher_internal:') === 0 ||\n      eventName.indexOf('pusher:') === 0\n    ) {\n      super.handleEvent(event);\n      return;\n    }\n    this.handleEncryptedEvent(eventName, data);\n  }\n\n  private handleEncryptedEvent(event: string, data: any): void {\n    if (!this.key) {\n      Logger.debug(\n        'Received encrypted event before key has been retrieved from the authEndpoint'\n      );\n      return;\n    }\n    if (!data.ciphertext || !data.nonce) {\n      Logger.error(\n        'Unexpected format for encrypted event, expected object with `ciphertext` and `nonce` fields, got: ' +\n          data\n      );\n      return;\n    }\n    let cipherText = decodeBase64(data.ciphertext);\n    if (cipherText.length < this.nacl.secretbox.overheadLength) {\n      Logger.error(\n        `Expected encrypted event ciphertext length to be ${this.nacl.secretbox.overheadLength}, got: ${cipherText.length}`\n      );\n      return;\n    }\n    let nonce = decodeBase64(data.nonce);\n    if (nonce.length < this.nacl.secretbox.nonceLength) {\n      Logger.error(\n        `Expected encrypted event nonce length to be ${this.nacl.secretbox.nonceLength}, got: ${nonce.length}`\n      );\n      return;\n    }\n\n    let bytes = this.nacl.secretbox.open(cipherText, nonce, this.key);\n    if (bytes === null) {\n      Logger.debug(\n        'Failed to decrypt an event, probably because it was encrypted with a different key. Fetching a new key from the authEndpoint...'\n      );\n      // Try a single time to retrieve a new auth key and decrypt the event with it\n      // If this fails, a new key will be requested when a new message is received\n      this.authorize(this.pusher.connection.socket_id, (error, authData) => {\n        if (error) {\n          Logger.error(\n            `Failed to make a request to the authEndpoint: ${authData}. Unable to fetch new key, so dropping encrypted event`\n          );\n          return;\n        }\n        bytes = this.nacl.secretbox.open(cipherText, nonce, this.key);\n        if (bytes === null) {\n          Logger.error(\n            `Failed to decrypt event with new key. Dropping encrypted event`\n          );\n          return;\n        }\n        this.emit(event, this.getDataToEmit(bytes));\n        return;\n      });\n      return;\n    }\n    this.emit(event, this.getDataToEmit(bytes));\n  }\n\n  // Try and parse the decrypted bytes as JSON. If we can't parse it, just\n  // return the utf-8 string\n  getDataToEmit(bytes: Uint8Array): string {\n    let raw = encodeUTF8(bytes);\n    try {\n      return JSON.parse(raw);\n    } catch {\n      return raw;\n    }\n  }\n}\n","import { default as EventsDispatcher } from '../events/dispatcher';\nimport { OneOffTimer as Timer } from '../utils/timers';\nimport { Config } from '../config';\nimport Logger from '../logger';\nimport HandshakePayload from './handshake/handshake_payload';\nimport Connection from './connection';\nimport Strategy from '../strategies/strategy';\nimport StrategyRunner from '../strategies/strategy_runner';\nimport * as Collections from '../utils/collections';\nimport Timeline from '../timeline/timeline';\nimport ConnectionManagerOptions from './connection_manager_options';\nimport Runtime from 'runtime';\n\nimport {\n  ErrorCallbacks,\n  HandshakeCallbacks,\n  ConnectionCallbacks\n} from './callbacks';\nimport Action from './protocol/action';\n\n/** Manages connection to Pusher.\n *\n * Uses a strategy (currently only default), timers and network availability\n * info to establish a connection and export its state. In case of failures,\n * manages reconnection attempts.\n *\n * Exports state changes as following events:\n * - \"state_change\", { previous: p, current: state }\n * - state\n *\n * States:\n * - initialized - initial state, never transitioned to\n * - connecting - connection is being established\n * - connected - connection has been fully established\n * - disconnected - on requested disconnection\n * - unavailable - after connection timeout or when there's no network\n * - failed - when the connection strategy is not supported\n *\n * Options:\n * - unavailableTimeout - time to transition to unavailable state\n * - activityTimeout - time after which ping message should be sent\n * - pongTimeout - time for Pusher to respond with pong before reconnecting\n *\n * @param {String} key application key\n * @param {Object} options\n */\nexport default class ConnectionManager extends EventsDispatcher {\n  key: string;\n  options: ConnectionManagerOptions;\n  state: string;\n  connection: Connection;\n  usingTLS: boolean;\n  timeline: Timeline;\n  socket_id: string;\n  unavailableTimer: Timer;\n  activityTimer: Timer;\n  retryTimer: Timer;\n  activityTimeout: number;\n  strategy: Strategy;\n  runner: StrategyRunner;\n  errorCallbacks: ErrorCallbacks;\n  handshakeCallbacks: HandshakeCallbacks;\n  connectionCallbacks: ConnectionCallbacks;\n\n  constructor(key: string, options: ConnectionManagerOptions) {\n    super();\n    this.state = 'initialized';\n    this.connection = null;\n\n    this.key = key;\n    this.options = options;\n    this.timeline = this.options.timeline;\n    this.usingTLS = this.options.useTLS;\n\n    this.errorCallbacks = this.buildErrorCallbacks();\n    this.connectionCallbacks = this.buildConnectionCallbacks(\n      this.errorCallbacks\n    );\n    this.handshakeCallbacks = this.buildHandshakeCallbacks(this.errorCallbacks);\n\n    var Network = Runtime.getNetwork();\n\n    Network.bind('online', () => {\n      this.timeline.info({ netinfo: 'online' });\n      if (this.state === 'connecting' || this.state === 'unavailable') {\n        this.retryIn(0);\n      }\n    });\n    Network.bind('offline', () => {\n      this.timeline.info({ netinfo: 'offline' });\n      if (this.connection) {\n        this.sendActivityCheck();\n      }\n    });\n\n    this.updateStrategy();\n  }\n\n  switchCluster(key: string) {\n    this.key = key;\n    // This ensures that the new config coming from\n    // pusher instance are taken into account\n    // such as appKey and cluster\n    this.updateStrategy();\n    this.retryIn(0);\n  }\n\n  /** Establishes a connection to Pusher.\n   *\n   * Does nothing when connection is already established. See top-level doc\n   * to find events emitted on connection attempts.\n   */\n  connect() {\n    if (this.connection || this.runner) {\n      return;\n    }\n    if (!this.strategy.isSupported()) {\n      this.updateState('failed');\n      return;\n    }\n    this.updateState('connecting');\n    this.startConnecting();\n    this.setUnavailableTimer();\n  }\n\n  /** Sends raw data.\n   *\n   * @param {String} data\n   */\n  send(data) {\n    if (this.connection) {\n      return this.connection.send(data);\n    } else {\n      return false;\n    }\n  }\n\n  /** Sends an event.\n   *\n   * @param {String} name\n   * @param {String} data\n   * @param {String} [channel]\n   * @returns {Boolean} whether message was sent or not\n   */\n  send_event(name: string, data: any, channel?: string) {\n    if (this.connection) {\n      return this.connection.send_event(name, data, channel);\n    } else {\n      return false;\n    }\n  }\n\n  /** Closes the connection. */\n  disconnect() {\n    this.disconnectInternally();\n    this.updateState('disconnected');\n  }\n\n  isUsingTLS() {\n    return this.usingTLS;\n  }\n\n  private startConnecting() {\n    var callback = (error, handshake) => {\n      if (error) {\n        this.runner = this.strategy.connect(0, callback);\n      } else {\n        if (handshake.action === 'error') {\n          this.emit('error', {\n            type: 'HandshakeError',\n            error: handshake.error\n          });\n          this.timeline.error({ handshakeError: handshake.error });\n        } else {\n          this.abortConnecting(); // we don't support switching connections yet\n          this.handshakeCallbacks[handshake.action](handshake);\n        }\n      }\n    };\n    this.runner = this.strategy.connect(0, callback);\n  }\n\n  private abortConnecting() {\n    if (this.runner) {\n      this.runner.abort();\n      this.runner = null;\n    }\n  }\n\n  private disconnectInternally() {\n    this.abortConnecting();\n    this.clearRetryTimer();\n    this.clearUnavailableTimer();\n    if (this.connection) {\n      var connection = this.abandonConnection();\n      connection.close();\n    }\n  }\n\n  private updateStrategy() {\n    this.strategy = this.options.getStrategy({\n      key: this.key,\n      timeline: this.timeline,\n      useTLS: this.usingTLS\n    });\n  }\n\n  private retryIn(delay) {\n    this.timeline.info({ action: 'retry', delay: delay });\n    if (delay > 0) {\n      this.emit('connecting_in', Math.round(delay / 1000));\n    }\n    this.retryTimer = new Timer(delay || 0, () => {\n      this.disconnectInternally();\n      this.connect();\n    });\n  }\n\n  private clearRetryTimer() {\n    if (this.retryTimer) {\n      this.retryTimer.ensureAborted();\n      this.retryTimer = null;\n    }\n  }\n\n  private setUnavailableTimer() {\n    this.unavailableTimer = new Timer(this.options.unavailableTimeout, () => {\n      this.updateState('unavailable');\n    });\n  }\n\n  private clearUnavailableTimer() {\n    if (this.unavailableTimer) {\n      this.unavailableTimer.ensureAborted();\n    }\n  }\n\n  private sendActivityCheck() {\n    this.stopActivityCheck();\n    this.connection.ping();\n    // wait for pong response\n    this.activityTimer = new Timer(this.options.pongTimeout, () => {\n      this.timeline.error({ pong_timed_out: this.options.pongTimeout });\n      this.retryIn(0);\n    });\n  }\n\n  private resetActivityCheck() {\n    this.stopActivityCheck();\n    // send ping after inactivity\n    if (this.connection && !this.connection.handlesActivityChecks()) {\n      this.activityTimer = new Timer(this.activityTimeout, () => {\n        this.sendActivityCheck();\n      });\n    }\n  }\n\n  private stopActivityCheck() {\n    if (this.activityTimer) {\n      this.activityTimer.ensureAborted();\n    }\n  }\n\n  private buildConnectionCallbacks(\n    errorCallbacks: ErrorCallbacks\n  ): ConnectionCallbacks {\n    return Collections.extend<ConnectionCallbacks>({}, errorCallbacks, {\n      message: message => {\n        // includes pong messages from server\n        this.resetActivityCheck();\n        this.emit('message', message);\n      },\n      ping: () => {\n        this.send_event('pusher:pong', {});\n      },\n      activity: () => {\n        this.resetActivityCheck();\n      },\n      error: error => {\n        // just emit error to user - socket will already be closed by browser\n        this.emit('error', error);\n      },\n      closed: () => {\n        this.abandonConnection();\n        if (this.shouldRetry()) {\n          this.retryIn(1000);\n        }\n      }\n    });\n  }\n\n  private buildHandshakeCallbacks(\n    errorCallbacks: ErrorCallbacks\n  ): HandshakeCallbacks {\n    return Collections.extend<HandshakeCallbacks>({}, errorCallbacks, {\n      connected: (handshake: HandshakePayload) => {\n        this.activityTimeout = Math.min(\n          this.options.activityTimeout,\n          handshake.activityTimeout,\n          handshake.connection.activityTimeout || Infinity\n        );\n        this.clearUnavailableTimer();\n        this.setConnection(handshake.connection);\n        this.socket_id = this.connection.id;\n        this.updateState('connected', { socket_id: this.socket_id });\n      }\n    });\n  }\n\n  private buildErrorCallbacks(): ErrorCallbacks {\n    let withErrorEmitted = callback => {\n      return (result: Action | HandshakePayload) => {\n        if (result.error) {\n          this.emit('error', { type: 'WebSocketError', error: result.error });\n        }\n        callback(result);\n      };\n    };\n\n    return {\n      tls_only: withErrorEmitted(() => {\n        this.usingTLS = true;\n        this.updateStrategy();\n        this.retryIn(0);\n      }),\n      refused: withErrorEmitted(() => {\n        this.disconnect();\n      }),\n      backoff: withErrorEmitted(() => {\n        this.retryIn(1000);\n      }),\n      retry: withErrorEmitted(() => {\n        this.retryIn(0);\n      })\n    };\n  }\n\n  private setConnection(connection) {\n    this.connection = connection;\n    for (var event in this.connectionCallbacks) {\n      this.connection.bind(event, this.connectionCallbacks[event]);\n    }\n    this.resetActivityCheck();\n  }\n\n  private abandonConnection() {\n    if (!this.connection) {\n      return;\n    }\n    this.stopActivityCheck();\n    for (var event in this.connectionCallbacks) {\n      this.connection.unbind(event, this.connectionCallbacks[event]);\n    }\n    var connection = this.connection;\n    this.connection = null;\n    return connection;\n  }\n\n  private updateState(newState: string, data?: any) {\n    var previousState = this.state;\n    this.state = newState;\n    if (previousState !== newState) {\n      var newStateDescription = newState;\n      if (newStateDescription === 'connected') {\n        newStateDescription += ' with new socket ID ' + data.socket_id;\n      }\n      Logger.debug(\n        'State changed',\n        previousState + ' -> ' + newStateDescription\n      );\n      this.timeline.info({ state: newState, params: data });\n      this.emit('state_change', { previous: previousState, current: newState });\n      this.emit(newState, data);\n    }\n  }\n\n  private shouldRetry(): boolean {\n    return this.state === 'connecting' || this.state === 'connected';\n  }\n}\n","import Channel from './channel';\nimport * as Collections from '../utils/collections';\nimport ChannelTable from './channel_table';\nimport Factory from '../utils/factory';\nimport Pusher from '../pusher';\nimport Logger from '../logger';\nimport * as Errors from '../errors';\nimport urlStore from '../utils/url_store';\n\n/** Handles a channel map. */\nexport default class Channels {\n  channels: ChannelTable;\n\n  constructor() {\n    this.channels = {};\n  }\n\n  /** Creates or retrieves an existing channel by its name.\n   *\n   * @param {String} name\n   * @param {Pusher} pusher\n   * @return {Channel}\n   */\n  add(name: string, pusher: Pusher) {\n    if (!this.channels[name]) {\n      this.channels[name] = createChannel(name, pusher);\n    }\n    return this.channels[name];\n  }\n\n  /** Returns a list of all channels\n   *\n   * @return {Array}\n   */\n  all(): Channel[] {\n    return Collections.values(this.channels);\n  }\n\n  /** Finds a channel by its name.\n   *\n   * @param {String} name\n   * @return {Channel} channel or null if it doesn't exist\n   */\n  find(name: string) {\n    return this.channels[name];\n  }\n\n  /** Removes a channel from the map.\n   *\n   * @param {String} name\n   */\n  remove(name: string) {\n    var channel = this.channels[name];\n    delete this.channels[name];\n    return channel;\n  }\n\n  /** Proxies disconnection signal to all channels. */\n  disconnect() {\n    Collections.objectApply(this.channels, function(channel) {\n      channel.disconnect();\n    });\n  }\n}\n\nfunction createChannel(name: string, pusher: Pusher): Channel {\n  if (name.indexOf('private-encrypted-') === 0) {\n    if (pusher.config.nacl) {\n      return Factory.createEncryptedChannel(name, pusher, pusher.config.nacl);\n    }\n    let errMsg =\n      'Tried to subscribe to a private-encrypted- channel but no nacl implementation available';\n    let suffix = urlStore.buildLogSuffix('encryptedChannelSupport');\n    throw new Errors.UnsupportedFeature(`${errMsg}. ${suffix}`);\n  } else if (name.indexOf('private-') === 0) {\n    return Factory.createPrivateChannel(name, pusher);\n  } else if (name.indexOf('presence-') === 0) {\n    return Factory.createPresenceChannel(name, pusher);\n  } else if (name.indexOf('#') === 0) {\n    throw new Errors.BadChannelName(\n      'Cannot create a channel with name \"' + name + '\".'\n    );\n  } else {\n    return Factory.createChannel(name, pusher);\n  }\n}\n","import AssistantToTheTransportManager from '../transports/assistant_to_the_transport_manager';\nimport PingDelayOptions from '../transports/ping_delay_options';\nimport Transport from '../transports/transport';\nimport TransportManager from '../transports/transport_manager';\nimport Handshake from '../connection/handshake';\nimport TransportConnection from '../transports/transport_connection';\nimport SocketHooks from '../http/socket_hooks';\nimport HTTPSocket from '../http/http_socket';\n\nimport Timeline from '../timeline/timeline';\nimport {\n  default as TimelineSender,\n  TimelineSenderOptions\n} from '../timeline/timeline_sender';\nimport PresenceChannel from '../channels/presence_channel';\nimport PrivateChannel from '../channels/private_channel';\nimport EncryptedChannel from '../channels/encrypted_channel';\nimport Channel from '../channels/channel';\nimport ConnectionManager from '../connection/connection_manager';\nimport ConnectionManagerOptions from '../connection/connection_manager_options';\nimport Ajax from '../http/ajax';\nimport Channels from '../channels/channels';\nimport Pusher from '../pusher';\nimport { Config } from '../config';\nimport * as nacl from 'tweetnacl';\n\nvar Factory = {\n  createChannels(): Channels {\n    return new Channels();\n  },\n\n  createConnectionManager(\n    key: string,\n    options: ConnectionManagerOptions\n  ): ConnectionManager {\n    return new ConnectionManager(key, options);\n  },\n\n  createChannel(name: string, pusher: Pusher): Channel {\n    return new Channel(name, pusher);\n  },\n\n  createPrivateChannel(name: string, pusher: Pusher): PrivateChannel {\n    return new PrivateChannel(name, pusher);\n  },\n\n  createPresenceChannel(name: string, pusher: Pusher): PresenceChannel {\n    return new PresenceChannel(name, pusher);\n  },\n\n  createEncryptedChannel(\n    name: string,\n    pusher: Pusher,\n    nacl: nacl\n  ): EncryptedChannel {\n    return new EncryptedChannel(name, pusher, nacl);\n  },\n\n  createTimelineSender(timeline: Timeline, options: TimelineSenderOptions) {\n    return new TimelineSender(timeline, options);\n  },\n\n  createHandshake(\n    transport: TransportConnection,\n    callback: (HandshakePayload) => void\n  ): Handshake {\n    return new Handshake(transport, callback);\n  },\n\n  createAssistantToTheTransportManager(\n    manager: TransportManager,\n    transport: Transport,\n    options: PingDelayOptions\n  ): AssistantToTheTransportManager {\n    return new AssistantToTheTransportManager(manager, transport, options);\n  }\n};\n\nexport default Factory;\n","import AssistantToTheTransportManager from './assistant_to_the_transport_manager';\nimport Transport from './transport';\nimport PingDelayOptions from './ping_delay_options';\nimport Factory from '../utils/factory';\n\nexport interface TransportManagerOptions extends PingDelayOptions {\n  lives?: number;\n}\n\n/** Keeps track of the number of lives left for a transport.\n *\n * In the beginning of a session, transports may be assigned a number of\n * lives. When an AssistantToTheTransportManager instance reports a transport\n * connection closed uncleanly, the transport loses a life. When the number\n * of lives drops to zero, the transport gets disabled by its manager.\n *\n * @param {Object} options\n */\nexport default class TransportManager {\n  options: TransportManagerOptions;\n  livesLeft: number;\n\n  constructor(options: TransportManagerOptions) {\n    this.options = options || {};\n    this.livesLeft = this.options.lives || Infinity;\n  }\n\n  /** Creates a assistant for the transport.\n   *\n   * @param {Transport} transport\n   * @returns {AssistantToTheTransportManager}\n   */\n  getAssistant(transport: Transport): AssistantToTheTransportManager {\n    return Factory.createAssistantToTheTransportManager(this, transport, {\n      minPingDelay: this.options.minPingDelay,\n      maxPingDelay: this.options.maxPingDelay\n    });\n  }\n\n  /** Returns whether the transport has any lives left.\n   *\n   * @returns {Boolean}\n   */\n  isAlive(): boolean {\n    return this.livesLeft > 0;\n  }\n\n  /** Takes one life from the transport. */\n  reportDeath() {\n    this.livesLeft -= 1;\n  }\n}\n","import * as Collections from '../utils/collections';\nimport Util from '../util';\nimport { OneOffTimer as Timer } from '../utils/timers';\nimport Strategy from './strategy';\nimport StrategyOptions from './strategy_options';\n\n/** Loops through strategies with optional timeouts.\n *\n * Options:\n * - loop - whether it should loop through the substrategy list\n * - timeout - initial timeout for a single substrategy\n * - timeoutLimit - maximum timeout\n *\n * @param {Strategy[]} strategies\n * @param {Object} options\n */\nexport default class SequentialStrategy implements Strategy {\n  strategies: Strategy[];\n  loop: boolean;\n  failFast: boolean;\n  timeout: number;\n  timeoutLimit: number;\n\n  constructor(strategies: Strategy[], options: StrategyOptions) {\n    this.strategies = strategies;\n    this.loop = Boolean(options.loop);\n    this.failFast = Boolean(options.failFast);\n    this.timeout = options.timeout;\n    this.timeoutLimit = options.timeoutLimit;\n  }\n\n  isSupported(): boolean {\n    return Collections.any(this.strategies, Util.method('isSupported'));\n  }\n\n  connect(minPriority: number, callback: Function) {\n    var strategies = this.strategies;\n    var current = 0;\n    var timeout = this.timeout;\n    var runner = null;\n\n    var tryNextStrategy = (error, handshake) => {\n      if (handshake) {\n        callback(null, handshake);\n      } else {\n        current = current + 1;\n        if (this.loop) {\n          current = current % strategies.length;\n        }\n\n        if (current < strategies.length) {\n          if (timeout) {\n            timeout = timeout * 2;\n            if (this.timeoutLimit) {\n              timeout = Math.min(timeout, this.timeoutLimit);\n            }\n          }\n          runner = this.tryStrategy(\n            strategies[current],\n            minPriority,\n            { timeout, failFast: this.failFast },\n            tryNextStrategy\n          );\n        } else {\n          callback(true);\n        }\n      }\n    };\n\n    runner = this.tryStrategy(\n      strategies[current],\n      minPriority,\n      { timeout: timeout, failFast: this.failFast },\n      tryNextStrategy\n    );\n\n    return {\n      abort: function() {\n        runner.abort();\n      },\n      forceMinPriority: function(p) {\n        minPriority = p;\n        if (runner) {\n          runner.forceMinPriority(p);\n        }\n      }\n    };\n  }\n\n  private tryStrategy(\n    strategy: Strategy,\n    minPriority: number,\n    options: StrategyOptions,\n    callback: Function\n  ) {\n    var timer = null;\n    var runner = null;\n\n    if (options.timeout > 0) {\n      timer = new Timer(options.timeout, function() {\n        runner.abort();\n        callback(true);\n      });\n    }\n\n    runner = strategy.connect(minPriority, function(error, handshake) {\n      if (error && timer && timer.isRunning() && !options.failFast) {\n        // advance to the next strategy after the timeout\n        return;\n      }\n      if (timer) {\n        timer.ensureAborted();\n      }\n      callback(error, handshake);\n    });\n\n    return {\n      abort: function() {\n        if (timer) {\n          timer.ensureAborted();\n        }\n        runner.abort();\n      },\n      forceMinPriority: function(p) {\n        runner.forceMinPriority(p);\n      }\n    };\n  }\n}\n","import * as Collections from '../utils/collections';\nimport Util from '../util';\nimport Strategy from './strategy';\n\n/** Launches all substrategies and emits prioritized connected transports.\n *\n * @param {Array} strategies\n */\nexport default class BestConnectedEverStrategy implements Strategy {\n  strategies: Strategy[];\n\n  constructor(strategies: Strategy[]) {\n    this.strategies = strategies;\n  }\n\n  isSupported(): boolean {\n    return Collections.any(this.strategies, Util.method('isSupported'));\n  }\n\n  connect(minPriority: number, callback: Function) {\n    return connect(this.strategies, minPriority, function(i, runners) {\n      return function(error, handshake) {\n        runners[i].error = error;\n        if (error) {\n          if (allRunnersFailed(runners)) {\n            callback(true);\n          }\n          return;\n        }\n        Collections.apply(runners, function(runner) {\n          runner.forceMinPriority(handshake.transport.priority);\n        });\n        callback(null, handshake);\n      };\n    });\n  }\n}\n\n/** Connects to all strategies in parallel.\n *\n * Callback builder should be a function that takes two arguments: index\n * and a list of runners. It should return another function that will be\n * passed to the substrategy with given index. Runners can be aborted using\n * abortRunner(s) functions from this class.\n *\n * @param  {Array} strategies\n * @param  {Function} callbackBuilder\n * @return {Object} strategy runner\n */\nfunction connect(\n  strategies: Strategy[],\n  minPriority: number,\n  callbackBuilder: Function\n) {\n  var runners = Collections.map(strategies, function(strategy, i, _, rs) {\n    return strategy.connect(minPriority, callbackBuilder(i, rs));\n  });\n  return {\n    abort: function() {\n      Collections.apply(runners, abortRunner);\n    },\n    forceMinPriority: function(p) {\n      Collections.apply(runners, function(runner) {\n        runner.forceMinPriority(p);\n      });\n    }\n  };\n}\n\nfunction allRunnersFailed(runners): boolean {\n  return Collections.all(runners, function(runner) {\n    return Boolean(runner.error);\n  });\n}\n\nfunction abortRunner(runner) {\n  if (!runner.error && !runner.aborted) {\n    runner.abort();\n    runner.aborted = true;\n  }\n}\n","import Util from '../util';\nimport Runtime from 'runtime';\nimport Strategy from './strategy';\nimport SequentialStrategy from './sequential_strategy';\nimport StrategyOptions from './strategy_options';\nimport TransportStrategy from './transport_strategy';\nimport Timeline from '../timeline/timeline';\nimport * as Collections from '../utils/collections';\n\nexport interface TransportStrategyDictionary {\n  [key: string]: TransportStrategy;\n}\n\n/** Caches the last successful transport and, after the first few attempts,\n *  uses the cached transport for subsequent attempts.\n *\n * @param {Strategy} strategy\n * @param {Object} transports\n * @param {Object} options\n */\nexport default class WebSocketPrioritizedCachedStrategy implements Strategy {\n  strategy: Strategy;\n  transports: TransportStrategyDictionary;\n  ttl: number;\n  usingTLS: boolean;\n  timeline: Timeline;\n\n  constructor(\n    strategy: Strategy,\n    transports: TransportStrategyDictionary,\n    options: StrategyOptions\n  ) {\n    this.strategy = strategy;\n    this.transports = transports;\n    this.ttl = options.ttl || 1800 * 1000;\n    this.usingTLS = options.useTLS;\n    this.timeline = options.timeline;\n  }\n\n  isSupported(): boolean {\n    return this.strategy.isSupported();\n  }\n\n  connect(minPriority: number, callback: Function) {\n    var usingTLS = this.usingTLS;\n    var info = fetchTransportCache(usingTLS);\n    var cacheSkipCount = info && info.cacheSkipCount ? info.cacheSkipCount : 0;\n\n    var strategies = [this.strategy];\n    if (info && info.timestamp + this.ttl >= Util.now()) {\n      var transport = this.transports[info.transport];\n      if (transport) {\n        if (['ws', 'wss'].includes(info.transport) || cacheSkipCount > 3) {\n          this.timeline.info({\n            cached: true,\n            transport: info.transport,\n            latency: info.latency\n          });\n          strategies.push(\n            new SequentialStrategy([transport], {\n              timeout: info.latency * 2 + 1000,\n              failFast: true\n            })\n          );\n        } else {\n          cacheSkipCount++;\n        }\n      }\n    }\n\n    var startTimestamp = Util.now();\n    var runner = strategies\n      .pop()\n      .connect(minPriority, function cb(error, handshake) {\n        if (error) {\n          flushTransportCache(usingTLS);\n          if (strategies.length > 0) {\n            startTimestamp = Util.now();\n            runner = strategies.pop().connect(minPriority, cb);\n          } else {\n            callback(error);\n          }\n        } else {\n          storeTransportCache(\n            usingTLS,\n            handshake.transport.name,\n            Util.now() - startTimestamp,\n            cacheSkipCount\n          );\n          callback(null, handshake);\n        }\n      });\n\n    return {\n      abort: function() {\n        runner.abort();\n      },\n      forceMinPriority: function(p) {\n        minPriority = p;\n        if (runner) {\n          runner.forceMinPriority(p);\n        }\n      }\n    };\n  }\n}\n\nfunction getTransportCacheKey(usingTLS: boolean): string {\n  return 'pusherTransport' + (usingTLS ? 'TLS' : 'NonTLS');\n}\n\nfunction fetchTransportCache(usingTLS: boolean): any {\n  var storage = Runtime.getLocalStorage();\n  if (storage) {\n    try {\n      var serializedCache = storage[getTransportCacheKey(usingTLS)];\n      if (serializedCache) {\n        return JSON.parse(serializedCache);\n      }\n    } catch (e) {\n      flushTransportCache(usingTLS);\n    }\n  }\n  return null;\n}\n\nfunction storeTransportCache(\n  usingTLS: boolean,\n  transport: TransportStrategy,\n  latency: number,\n  cacheSkipCount: number\n) {\n  var storage = Runtime.getLocalStorage();\n  if (storage) {\n    try {\n      storage[getTransportCacheKey(usingTLS)] = Collections.safeJSONStringify({\n        timestamp: Util.now(),\n        transport: transport,\n        latency: latency,\n        cacheSkipCount: cacheSkipCount\n      });\n    } catch (e) {\n      // catch over quota exceptions raised by localStorage\n    }\n  }\n}\n\nfunction flushTransportCache(usingTLS: boolean) {\n  var storage = Runtime.getLocalStorage();\n  if (storage) {\n    try {\n      delete storage[getTransportCacheKey(usingTLS)];\n    } catch (e) {\n      // catch exceptions raised by localStorage\n    }\n  }\n}\n","import { OneOffTimer as Timer } from '../utils/timers';\nimport Strategy from './strategy';\nimport StrategyOptions from './strategy_options';\n\n/** Runs substrategy after specified delay.\n *\n * Options:\n * - delay - time in miliseconds to delay the substrategy attempt\n *\n * @param {Strategy} strategy\n * @param {Object} options\n */\nexport default class DelayedStrategy implements Strategy {\n  strategy: Strategy;\n  options: { delay: number };\n\n  constructor(strategy: Strategy, { delay: number }) {\n    this.strategy = strategy;\n    this.options = { delay: number };\n  }\n\n  isSupported(): boolean {\n    return this.strategy.isSupported();\n  }\n\n  connect(minPriority: number, callback: Function) {\n    var strategy = this.strategy;\n    var runner;\n    var timer = new Timer(this.options.delay, function() {\n      runner = strategy.connect(minPriority, callback);\n    });\n\n    return {\n      abort: function() {\n        timer.ensureAborted();\n        if (runner) {\n          runner.abort();\n        }\n      },\n      forceMinPriority: function(p) {\n        minPriority = p;\n        if (runner) {\n          runner.forceMinPriority(p);\n        }\n      }\n    };\n  }\n}\n","import Strategy from './strategy';\nimport StrategyRunner from './strategy_runner';\n\n/** Proxies method calls to one of substrategies basing on the test function.\n *\n * @param {Function} test\n * @param {Strategy} trueBranch strategy used when test returns true\n * @param {Strategy} falseBranch strategy used when test returns false\n */\nexport default class IfStrategy implements Strategy {\n  test: () => boolean;\n  trueBranch: Strategy;\n  falseBranch: Strategy;\n\n  constructor(\n    test: () => boolean,\n    trueBranch: Strategy,\n    falseBranch: Strategy\n  ) {\n    this.test = test;\n    this.trueBranch = trueBranch;\n    this.falseBranch = falseBranch;\n  }\n\n  isSupported(): boolean {\n    var branch = this.test() ? this.trueBranch : this.falseBranch;\n    return branch.isSupported();\n  }\n\n  connect(minPriority: number, callback: Function): StrategyRunner {\n    var branch = this.test() ? this.trueBranch : this.falseBranch;\n    return branch.connect(minPriority, callback);\n  }\n}\n","import Strategy from './strategy';\nimport StrategyRunner from './strategy_runner';\n\n/** Launches the substrategy and terminates on the first open connection.\n *\n * @param {Strategy} strategy\n */\nexport default class FirstConnectedStrategy implements Strategy {\n  strategy: Strategy;\n\n  constructor(strategy: Strategy) {\n    this.strategy = strategy;\n  }\n\n  isSupported(): boolean {\n    return this.strategy.isSupported();\n  }\n\n  connect(minPriority: number, callback: Function): StrategyRunner {\n    var runner = this.strategy.connect(minPriority, function(error, handshake) {\n      if (handshake) {\n        runner.abort();\n      }\n      callback(error, handshake);\n    });\n    return runner;\n  }\n}\n","import * as Collections from 'core/utils/collections';\nimport TransportManager from 'core/transports/transport_manager';\nimport Strategy from 'core/strategies/strategy';\nimport StrategyOptions from 'core/strategies/strategy_options';\nimport SequentialStrategy from 'core/strategies/sequential_strategy';\nimport BestConnectedEverStrategy from 'core/strategies/best_connected_ever_strategy';\nimport WebSocketPrioritizedCachedStrategy, {\n  TransportStrategyDictionary\n} from 'core/strategies/websocket_prioritized_cached_strategy';\nimport DelayedStrategy from 'core/strategies/delayed_strategy';\nimport IfStrategy from 'core/strategies/if_strategy';\nimport FirstConnectedStrategy from 'core/strategies/first_connected_strategy';\nimport { Config } from 'core/config';\n\nfunction testSupportsStrategy(strategy: Strategy) {\n  return function() {\n    return strategy.isSupported();\n  };\n}\n\nvar getDefaultStrategy = function(\n  config: Config,\n  baseOptions: StrategyOptions,\n  defineTransport: Function\n): Strategy {\n  var definedTransports = <TransportStrategyDictionary>{};\n\n  function defineTransportStrategy(\n    name: string,\n    type: string,\n    priority: number,\n    options: StrategyOptions,\n    manager?: TransportManager\n  ) {\n    var transport = defineTransport(\n      config,\n      name,\n      type,\n      priority,\n      options,\n      manager\n    );\n\n    definedTransports[name] = transport;\n\n    return transport;\n  }\n\n  var ws_options: StrategyOptions = Object.assign({}, baseOptions, {\n    hostNonTLS: config.wsHost + ':' + config.wsPort,\n    hostTLS: config.wsHost + ':' + config.wssPort,\n    httpPath: config.wsPath\n  });\n  var wss_options: StrategyOptions = Object.assign({}, ws_options, {\n    useTLS: true\n  });\n  var sockjs_options: StrategyOptions = Object.assign({}, baseOptions, {\n    hostNonTLS: config.httpHost + ':' + config.httpPort,\n    hostTLS: config.httpHost + ':' + config.httpsPort,\n    httpPath: config.httpPath\n  });\n\n  var timeouts = {\n    loop: true,\n    timeout: 15000,\n    timeoutLimit: 60000\n  };\n\n  var ws_manager = new TransportManager({\n    minPingDelay: 10000,\n    maxPingDelay: config.activityTimeout\n  });\n  var streaming_manager = new TransportManager({\n    lives: 2,\n    minPingDelay: 10000,\n    maxPingDelay: config.activityTimeout\n  });\n\n  var ws_transport = defineTransportStrategy(\n    'ws',\n    'ws',\n    3,\n    ws_options,\n    ws_manager\n  );\n  var wss_transport = defineTransportStrategy(\n    'wss',\n    'ws',\n    3,\n    wss_options,\n    ws_manager\n  );\n  var sockjs_transport = defineTransportStrategy(\n    'sockjs',\n    'sockjs',\n    1,\n    sockjs_options\n  );\n  var xhr_streaming_transport = defineTransportStrategy(\n    'xhr_streaming',\n    'xhr_streaming',\n    1,\n    sockjs_options,\n    streaming_manager\n  );\n  var xdr_streaming_transport = defineTransportStrategy(\n    'xdr_streaming',\n    'xdr_streaming',\n    1,\n    sockjs_options,\n    streaming_manager\n  );\n  var xhr_polling_transport = defineTransportStrategy(\n    'xhr_polling',\n    'xhr_polling',\n    1,\n    sockjs_options\n  );\n  var xdr_polling_transport = defineTransportStrategy(\n    'xdr_polling',\n    'xdr_polling',\n    1,\n    sockjs_options\n  );\n\n  var ws_loop = new SequentialStrategy([ws_transport], timeouts);\n  var wss_loop = new SequentialStrategy([wss_transport], timeouts);\n  var sockjs_loop = new SequentialStrategy([sockjs_transport], timeouts);\n  var streaming_loop = new SequentialStrategy(\n    [\n      new IfStrategy(\n        testSupportsStrategy(xhr_streaming_transport),\n        xhr_streaming_transport,\n        xdr_streaming_transport\n      )\n    ],\n    timeouts\n  );\n  var polling_loop = new SequentialStrategy(\n    [\n      new IfStrategy(\n        testSupportsStrategy(xhr_polling_transport),\n        xhr_polling_transport,\n        xdr_polling_transport\n      )\n    ],\n    timeouts\n  );\n\n  var http_loop = new SequentialStrategy(\n    [\n      new IfStrategy(\n        testSupportsStrategy(streaming_loop),\n        new BestConnectedEverStrategy([\n          streaming_loop,\n          new DelayedStrategy(polling_loop, { delay: 4000 })\n        ]),\n        polling_loop\n      )\n    ],\n    timeouts\n  );\n\n  var http_fallback_loop = new IfStrategy(\n    testSupportsStrategy(http_loop),\n    http_loop,\n    sockjs_loop\n  );\n\n  var wsStrategy;\n  if (baseOptions.useTLS) {\n    wsStrategy = new BestConnectedEverStrategy([\n      ws_loop,\n      new DelayedStrategy(http_fallback_loop, { delay: 2000 })\n    ]);\n  } else {\n    wsStrategy = new BestConnectedEverStrategy([\n      ws_loop,\n      new DelayedStrategy(wss_loop, { delay: 2000 }),\n      new DelayedStrategy(http_fallback_loop, { delay: 5000 })\n    ]);\n  }\n\n  return new WebSocketPrioritizedCachedStrategy(\n    new FirstConnectedStrategy(\n      new IfStrategy(\n        testSupportsStrategy(ws_transport),\n        wsStrategy,\n        http_fallback_loop\n      )\n    ),\n    definedTransports,\n    {\n      ttl: 1800000,\n      timeline: baseOptions.timeline,\n      useTLS: baseOptions.useTLS\n    }\n  );\n};\n\nexport default getDefaultStrategy;\n","import HTTPRequest from 'core/http/http_request';\nimport RequestHooks from 'core/http/request_hooks';\nimport Ajax from 'core/http/ajax';\nimport * as Errors from 'core/errors';\n\nvar hooks: RequestHooks = {\n  getRequest: function(socket: HTTPRequest): Ajax {\n    var xdr = new (<any>window).XDomainRequest();\n    xdr.ontimeout = function() {\n      socket.emit('error', new Errors.RequestTimedOut());\n      socket.close();\n    };\n    xdr.onerror = function(e) {\n      socket.emit('error', e);\n      socket.close();\n    };\n    xdr.onprogress = function() {\n      if (xdr.responseText && xdr.responseText.length > 0) {\n        socket.onChunk(200, xdr.responseText);\n      }\n    };\n    xdr.onload = function() {\n      if (xdr.responseText && xdr.responseText.length > 0) {\n        socket.onChunk(200, xdr.responseText);\n      }\n      socket.emit('finished', 200);\n      socket.close();\n    };\n    return xdr;\n  },\n  abortRequest: function(xdr: Ajax) {\n    xdr.ontimeout = xdr.onerror = xdr.onprogress = xdr.onload = null;\n    xdr.abort();\n  }\n};\n\nexport default hooks;\n","import Runtime from 'runtime';\nimport RequestHooks from './request_hooks';\nimport Ajax from './ajax';\nimport { default as EventsDispatcher } from '../events/dispatcher';\n\nconst MAX_BUFFER_LENGTH = 256 * 1024;\n\nexport default class HTTPRequest extends EventsDispatcher {\n  hooks: RequestHooks;\n  method: string;\n  url: string;\n  position: number;\n  xhr: Ajax;\n  unloader: Function;\n\n  constructor(hooks: RequestHooks, method: string, url: string) {\n    super();\n    this.hooks = hooks;\n    this.method = method;\n    this.url = url;\n  }\n\n  start(payload?: any) {\n    this.position = 0;\n    this.xhr = this.hooks.getRequest(this);\n\n    this.unloader = () => {\n      this.close();\n    };\n    Runtime.addUnloadListener(this.unloader);\n\n    this.xhr.open(this.method, this.url, true);\n\n    if (this.xhr.setRequestHeader) {\n      this.xhr.setRequestHeader('Content-Type', 'application/json'); // ReactNative doesn't set this header by default.\n    }\n    this.xhr.send(payload);\n  }\n\n  close() {\n    if (this.unloader) {\n      Runtime.removeUnloadListener(this.unloader);\n      this.unloader = null;\n    }\n    if (this.xhr) {\n      this.hooks.abortRequest(this.xhr);\n      this.xhr = null;\n    }\n  }\n\n  onChunk(status: number, data: any) {\n    while (true) {\n      var chunk = this.advanceBuffer(data);\n      if (chunk) {\n        this.emit('chunk', { status: status, data: chunk });\n      } else {\n        break;\n      }\n    }\n    if (this.isBufferTooLong(data)) {\n      this.emit('buffer_too_long');\n    }\n  }\n\n  private advanceBuffer(buffer: any[]): any {\n    var unreadData = buffer.slice(this.position);\n    var endOfLinePosition = unreadData.indexOf('\\n');\n\n    if (endOfLinePosition !== -1) {\n      this.position += endOfLinePosition + 1;\n      return unreadData.slice(0, endOfLinePosition);\n    } else {\n      // chunk is not finished yet, don't move the buffer pointer\n      return null;\n    }\n  }\n\n  private isBufferTooLong(buffer: any): boolean {\n    return this.position === buffer.length && buffer.length > MAX_BUFFER_LENGTH;\n  }\n}\n","enum State {\n  CONNECTING = 0,\n  OPEN = 1,\n  CLOSED = 3\n}\n\nexport default State;\n","import URLLocation from './url_location';\nimport State from './state';\nimport Socket from '../socket';\nimport SocketHooks from './socket_hooks';\nimport Util from '../util';\nimport Ajax from './ajax';\nimport HTTPRequest from './http_request';\nimport Runtime from 'runtime';\n\nvar autoIncrement = 1;\n\nclass HTTPSocket implements Socket {\n  hooks: SocketHooks;\n  session: string;\n  location: URLLocation;\n  readyState: State;\n  stream: HTTPRequest;\n\n  onopen: () => void;\n  onerror: (error: any) => void;\n  onclose: (closeEvent: any) => void;\n  onmessage: (message: any) => void;\n  onactivity: () => void;\n\n  constructor(hooks: SocketHooks, url: string) {\n    this.hooks = hooks;\n    this.session = randomNumber(1000) + '/' + randomString(8);\n    this.location = getLocation(url);\n    this.readyState = State.CONNECTING;\n    this.openStream();\n  }\n\n  send(payload: any) {\n    return this.sendRaw(JSON.stringify([payload]));\n  }\n\n  ping() {\n    this.hooks.sendHeartbeat(this);\n  }\n\n  close(code: any, reason: any) {\n    this.onClose(code, reason, true);\n  }\n\n  /** For internal use only */\n  sendRaw(payload: any): boolean {\n    if (this.readyState === State.OPEN) {\n      try {\n        Runtime.createSocketRequest(\n          'POST',\n          getUniqueURL(getSendURL(this.location, this.session))\n        ).start(payload);\n        return true;\n      } catch (e) {\n        return false;\n      }\n    } else {\n      return false;\n    }\n  }\n\n  /** For internal use only */\n  reconnect() {\n    this.closeStream();\n    this.openStream();\n  }\n\n  /** For internal use only */\n  onClose(code, reason, wasClean) {\n    this.closeStream();\n    this.readyState = State.CLOSED;\n    if (this.onclose) {\n      this.onclose({\n        code: code,\n        reason: reason,\n        wasClean: wasClean\n      });\n    }\n  }\n\n  private onChunk(chunk) {\n    if (chunk.status !== 200) {\n      return;\n    }\n    if (this.readyState === State.OPEN) {\n      this.onActivity();\n    }\n\n    var payload;\n    var type = chunk.data.slice(0, 1);\n    switch (type) {\n      case 'o':\n        payload = JSON.parse(chunk.data.slice(1) || '{}');\n        this.onOpen(payload);\n        break;\n      case 'a':\n        payload = JSON.parse(chunk.data.slice(1) || '[]');\n        for (var i = 0; i < payload.length; i++) {\n          this.onEvent(payload[i]);\n        }\n        break;\n      case 'm':\n        payload = JSON.parse(chunk.data.slice(1) || 'null');\n        this.onEvent(payload);\n        break;\n      case 'h':\n        this.hooks.onHeartbeat(this);\n        break;\n      case 'c':\n        payload = JSON.parse(chunk.data.slice(1) || '[]');\n        this.onClose(payload[0], payload[1], true);\n        break;\n    }\n  }\n\n  private onOpen(options) {\n    if (this.readyState === State.CONNECTING) {\n      if (options && options.hostname) {\n        this.location.base = replaceHost(this.location.base, options.hostname);\n      }\n      this.readyState = State.OPEN;\n\n      if (this.onopen) {\n        this.onopen();\n      }\n    } else {\n      this.onClose(1006, 'Server lost session', true);\n    }\n  }\n\n  private onEvent(event) {\n    if (this.readyState === State.OPEN && this.onmessage) {\n      this.onmessage({ data: event });\n    }\n  }\n\n  private onActivity() {\n    if (this.onactivity) {\n      this.onactivity();\n    }\n  }\n\n  private onError(error) {\n    if (this.onerror) {\n      this.onerror(error);\n    }\n  }\n\n  private openStream() {\n    this.stream = Runtime.createSocketRequest(\n      'POST',\n      getUniqueURL(this.hooks.getReceiveURL(this.location, this.session))\n    );\n\n    this.stream.bind('chunk', chunk => {\n      this.onChunk(chunk);\n    });\n    this.stream.bind('finished', status => {\n      this.hooks.onFinished(this, status);\n    });\n    this.stream.bind('buffer_too_long', () => {\n      this.reconnect();\n    });\n\n    try {\n      this.stream.start();\n    } catch (error) {\n      Util.defer(() => {\n        this.onError(error);\n        this.onClose(1006, 'Could not start streaming', false);\n      });\n    }\n  }\n\n  private closeStream() {\n    if (this.stream) {\n      this.stream.unbind_all();\n      this.stream.close();\n      this.stream = null;\n    }\n  }\n}\n\nfunction getLocation(url): URLLocation {\n  var parts = /([^\\?]*)\\/*(\\??.*)/.exec(url);\n  return {\n    base: parts[1],\n    queryString: parts[2]\n  };\n}\n\nfunction getSendURL(url: URLLocation, session: string): string {\n  return url.base + '/' + session + '/xhr_send';\n}\n\nfunction getUniqueURL(url: string): string {\n  var separator = url.indexOf('?') === -1 ? '?' : '&';\n  return url + separator + 't=' + +new Date() + '&n=' + autoIncrement++;\n}\n\nfunction replaceHost(url: string, hostname: string): string {\n  var urlParts = /(https?:\\/\\/)([^\\/:]+)((\\/|:)?.*)/.exec(url);\n  return urlParts[1] + hostname + urlParts[3];\n}\n\nfunction randomNumber(max: number): number {\n  return Runtime.randomInt(max);\n}\n\nfunction randomString(length: number): string {\n  var result = [];\n\n  for (var i = 0; i < length; i++) {\n    result.push(randomNumber(32).toString(32));\n  }\n\n  return result.join('');\n}\n\nexport default HTTPSocket;\n","enum TimelineLevel {\n  ERROR = 3,\n  INFO = 6,\n  DEBUG = 7\n}\n\nexport default TimelineLevel;\n","import SocketHooks from './socket_hooks';\nimport HTTPSocket from './http_socket';\n\nvar hooks: SocketHooks = {\n  getReceiveURL: function(url, session) {\n    return url.base + '/' + session + '/xhr_streaming' + url.queryString;\n  },\n  onHeartbeat: function(socket) {\n    socket.sendRaw('[]');\n  },\n  sendHeartbeat: function(socket) {\n    socket.sendRaw('[]');\n  },\n  onFinished: function(socket, status) {\n    socket.onClose(1006, 'Connection interrupted (' + status + ')', false);\n  }\n};\n\nexport default hooks;\n","import SocketHooks from './socket_hooks';\nimport URLLocation from './url_location';\nimport HTTPSocket from './http_socket';\n\nvar hooks: SocketHooks = {\n  getReceiveURL: function(url: URLLocation, session: string): string {\n    return url.base + '/' + session + '/xhr' + url.queryString;\n  },\n  onHeartbeat: function() {\n    // next HTTP request will reset server's activity timer\n  },\n  sendHeartbeat: function(socket) {\n    socket.sendRaw('[]');\n  },\n  onFinished: function(socket, status) {\n    if (status === 200) {\n      socket.reconnect();\n    } else {\n      socket.onClose(1006, 'Connection interrupted (' + status + ')', false);\n    }\n  }\n};\n\nexport default hooks;\n","import HTTPRequest from 'core/http/http_request';\nimport RequestHooks from 'core/http/request_hooks';\nimport Ajax from 'core/http/ajax';\nimport Runtime from 'runtime';\n\nvar hooks: RequestHooks = {\n  getRequest: function(socket: HTTPRequest): Ajax {\n    var Constructor = Runtime.getXHRAPI();\n    var xhr = new Constructor();\n    xhr.onreadystatechange = xhr.onprogress = function() {\n      switch (xhr.readyState) {\n        case 3:\n          if (xhr.responseText && xhr.responseText.length > 0) {\n            socket.onChunk(xhr.status, xhr.responseText);\n          }\n          break;\n        case 4:\n          // this happens only on errors, never after calling close\n          if (xhr.responseText && xhr.responseText.length > 0) {\n            socket.onChunk(xhr.status, xhr.responseText);\n          }\n          socket.emit('finished', xhr.status);\n          socket.close();\n          break;\n      }\n    };\n    return xhr;\n  },\n  abortRequest: function(xhr: Ajax) {\n    xhr.onreadystatechange = null;\n    xhr.abort();\n  }\n};\n\nexport default hooks;\n","import HTTPRequest from 'core/http/http_request';\nimport HTTPSocket from 'core/http/http_socket';\nimport SocketHooks from 'core/http/socket_hooks';\nimport RequestHooks from 'core/http/request_hooks';\nimport streamingHooks from 'core/http/http_streaming_socket';\nimport pollingHooks from 'core/http/http_polling_socket';\nimport xhrHooks from './http_xhr_request';\nimport HTTPFactory from 'core/http/http_factory';\n\nvar HTTP: HTTPFactory = {\n  createStreamingSocket(url: string): HTTPSocket {\n    return this.createSocket(streamingHooks, url);\n  },\n\n  createPollingSocket(url: string): HTTPSocket {\n    return this.createSocket(pollingHooks, url);\n  },\n\n  createSocket(hooks: SocketHooks, url: string): HTTPSocket {\n    return new HTTPSocket(hooks, url);\n  },\n\n  createXHR(method: string, url: string): HTTPRequest {\n    return this.createRequest(xhrHooks, method, url);\n  },\n\n  createRequest(hooks: RequestHooks, method: string, url: string): HTTPRequest {\n    return new HTTPRequest(hooks, method, url);\n  }\n};\n\nexport default HTTP;\n","import xdrHooks from './http_xdomain_request';\nimport HTTP from 'isomorphic/http/http';\n\nHTTP.createXDR = function(method, url) {\n  return this.createRequest(xdrHooks, method, url);\n};\n\nexport default HTTP;\n","import Browser from './browser';\nimport { Dependencies, DependenciesReceivers } from './dom/dependencies';\nimport { AuthTransport, AuthTransports } from 'core/auth/auth_transports';\nimport xhrAuth from 'isomorphic/auth/xhr_auth';\nimport jsonpAuth from './auth/jsonp_auth';\nimport TimelineTransport from 'core/timeline/timeline_transport';\nimport TimelineSender from 'core/timeline/timeline_sender';\nimport ScriptRequest from './dom/script_request';\nimport JSONPRequest from './dom/jsonp_request';\nimport * as Collections from 'core/utils/collections';\nimport { ScriptReceivers } from './dom/script_receiver_factory';\nimport jsonpTimeline from './timeline/jsonp_timeline';\nimport Transports from './transports/transports';\nimport Ajax from 'core/http/ajax';\nimport { Network } from './net_info';\nimport getDefaultStrategy from './default_strategy';\nimport transportConnectionInitializer from './transports/transport_connection_initializer';\nimport HTTPFactory from './http/http';\nimport HTTPRequest from 'core/http/http_request';\n\nvar Runtime: Browser = {\n  // for jsonp auth\n  nextAuthCallbackID: 1,\n  auth_callbacks: {},\n  ScriptReceivers,\n  DependenciesReceivers,\n  getDefaultStrategy,\n  Transports,\n  transportConnectionInitializer,\n  HTTPFactory,\n\n  TimelineTransport: jsonpTimeline,\n\n  getXHRAPI() {\n    return window.XMLHttpRequest;\n  },\n\n  getWebSocketAPI() {\n    return window.WebSocket || window.MozWebSocket;\n  },\n\n  setup(PusherClass): void {\n    (<any>window).Pusher = PusherClass; // JSONp requires Pusher to be in the global scope.\n    var initializeOnDocumentBody = () => {\n      this.onDocumentBody(PusherClass.ready);\n    };\n    if (!(<any>window).JSON) {\n      Dependencies.load('json2', {}, initializeOnDocumentBody);\n    } else {\n      initializeOnDocumentBody();\n    }\n  },\n\n  getDocument(): Document {\n    return document;\n  },\n\n  getProtocol(): string {\n    return this.getDocument().location.protocol;\n  },\n\n  getAuthorizers(): AuthTransports {\n    return { ajax: xhrAuth, jsonp: jsonpAuth };\n  },\n\n  onDocumentBody(callback: Function) {\n    if (document.body) {\n      callback();\n    } else {\n      setTimeout(() => {\n        this.onDocumentBody(callback);\n      }, 0);\n    }\n  },\n\n  createJSONPRequest(url: string, data: any): JSONPRequest {\n    return new JSONPRequest(url, data);\n  },\n\n  createScriptRequest(src: string): ScriptRequest {\n    return new ScriptRequest(src);\n  },\n\n  getLocalStorage() {\n    try {\n      return window.localStorage;\n    } catch (e) {\n      return undefined;\n    }\n  },\n\n  createXHR(): Ajax {\n    if (this.getXHRAPI()) {\n      return this.createXMLHttpRequest();\n    } else {\n      return this.createMicrosoftXHR();\n    }\n  },\n\n  createXMLHttpRequest(): Ajax {\n    var Constructor = this.getXHRAPI();\n    return new Constructor();\n  },\n\n  createMicrosoftXHR(): Ajax {\n    return new ActiveXObject('Microsoft.XMLHTTP');\n  },\n\n  getNetwork() {\n    return Network;\n  },\n\n  createWebSocket(url: string): any {\n    var Constructor = this.getWebSocketAPI();\n    return new Constructor(url);\n  },\n\n  createSocketRequest(method: string, url: string): HTTPRequest {\n    if (this.isXHRSupported()) {\n      return this.HTTPFactory.createXHR(method, url);\n    } else if (this.isXDRSupported(url.indexOf('https:') === 0)) {\n      return this.HTTPFactory.createXDR(method, url);\n    } else {\n      throw 'Cross-origin HTTP requests are not supported';\n    }\n  },\n\n  isXHRSupported(): boolean {\n    var Constructor = this.getXHRAPI();\n    return (\n      Boolean(Constructor) && new Constructor().withCredentials !== undefined\n    );\n  },\n\n  isXDRSupported(useTLS?: boolean): boolean {\n    var protocol = useTLS ? 'https:' : 'http:';\n    var documentProtocol = this.getProtocol();\n    return (\n      Boolean(<any>window['XDomainRequest']) && documentProtocol === protocol\n    );\n  },\n\n  addUnloadListener(listener: any) {\n    if (window.addEventListener !== undefined) {\n      window.addEventListener('unload', listener, false);\n    } else if (window.attachEvent !== undefined) {\n      window.attachEvent('onunload', listener);\n    }\n  },\n\n  removeUnloadListener(listener: any) {\n    if (window.addEventListener !== undefined) {\n      window.removeEventListener('unload', listener, false);\n    } else if (window.detachEvent !== undefined) {\n      window.detachEvent('onunload', listener);\n    }\n  },\n\n  randomInt(max: number): number {\n    /**\n     * Return values in the range of [0, 1[\n     */\n    const random = function() {\n      const crypto = window.crypto || window['msCrypto'];\n      const random = crypto.getRandomValues(new Uint32Array(1))[0];\n\n      return random / 2 ** 32;\n    };\n\n    return Math.floor(random() * max);\n  }\n};\n\nexport default Runtime;\n","import { Dependencies } from '../dom/dependencies';\n\n/** Initializes the transport.\n *\n * Fetches resources if needed and then transitions to initialized.\n */\nexport default function() {\n  var self = this;\n\n  self.timeline.info(\n    self.buildTimelineMessage({\n      transport: self.name + (self.options.useTLS ? 's' : '')\n    })\n  );\n\n  if (self.hooks.isInitialized()) {\n    self.changeState('initialized');\n  } else if (self.hooks.file) {\n    self.changeState('initializing');\n    Dependencies.load(\n      self.hooks.file,\n      { useTLS: self.options.useTLS },\n      function(error, callback) {\n        if (self.hooks.isInitialized()) {\n          self.changeState('initialized');\n          callback(true);\n        } else {\n          if (error) {\n            self.onError(error);\n          }\n          self.onClose();\n          callback(false);\n        }\n      }\n    );\n  } else {\n    self.onClose();\n  }\n}\n","import * as Collections from '../utils/collections';\nimport Util from '../util';\nimport { default as Level } from './level';\n\nexport interface TimelineOptions {\n  level?: Level;\n  limit?: number;\n  version?: string;\n  cluster?: string;\n  features?: string[];\n  params?: any;\n}\n\nexport default class Timeline {\n  key: string;\n  session: number;\n  events: any[];\n  options: TimelineOptions;\n  sent: number;\n  uniqueID: number;\n\n  constructor(key: string, session: number, options: TimelineOptions) {\n    this.key = key;\n    this.session = session;\n    this.events = [];\n    this.options = options || {};\n    this.sent = 0;\n    this.uniqueID = 0;\n  }\n\n  log(level, event) {\n    if (level <= this.options.level) {\n      this.events.push(\n        Collections.extend({}, event, { timestamp: Util.now() })\n      );\n      if (this.options.limit && this.events.length > this.options.limit) {\n        this.events.shift();\n      }\n    }\n  }\n\n  error(event) {\n    this.log(Level.ERROR, event);\n  }\n\n  info(event) {\n    this.log(Level.INFO, event);\n  }\n\n  debug(event) {\n    this.log(Level.DEBUG, event);\n  }\n\n  isEmpty() {\n    return this.events.length === 0;\n  }\n\n  send(sendfn, callback) {\n    var data = Collections.extend(\n      {\n        session: this.session,\n        bundle: this.sent + 1,\n        key: this.key,\n        lib: 'js',\n        version: this.options.version,\n        cluster: this.options.cluster,\n        features: this.options.features,\n        timeline: this.events\n      },\n      this.options.params\n    );\n\n    this.events = [];\n    sendfn(data, (error, result) => {\n      if (!error) {\n        this.sent++;\n      }\n      if (callback) {\n        callback(error, result);\n      }\n    });\n\n    return true;\n  }\n\n  generateUniqueID(): number {\n    this.uniqueID++;\n    return this.uniqueID;\n  }\n}\n","import Factory from '../utils/factory';\nimport Util from '../util';\nimport * as Errors from '../errors';\nimport * as Collections from '../utils/collections';\nimport Strategy from './strategy';\nimport Transport from '../transports/transport';\nimport StrategyOptions from './strategy_options';\nimport Handshake from '../connection/handshake';\n\n/** Provides a strategy interface for transports.\n *\n * @param {String} name\n * @param {Number} priority\n * @param {Class} transport\n * @param {Object} options\n */\nexport default class TransportStrategy implements Strategy {\n  name: string;\n  priority: number;\n  transport: Transport;\n  options: StrategyOptions;\n\n  constructor(\n    name: string,\n    priority: number,\n    transport: Transport,\n    options: StrategyOptions\n  ) {\n    this.name = name;\n    this.priority = priority;\n    this.transport = transport;\n    this.options = options || {};\n  }\n\n  /** Returns whether the transport is supported in the browser.\n   *\n   * @returns {Boolean}\n   */\n  isSupported(): boolean {\n    return this.transport.isSupported({\n      useTLS: this.options.useTLS\n    });\n  }\n\n  /** Launches a connection attempt and returns a strategy runner.\n   *\n   * @param  {Function} callback\n   * @return {Object} strategy runner\n   */\n  connect(minPriority: number, callback: Function) {\n    if (!this.isSupported()) {\n      return failAttempt(new Errors.UnsupportedStrategy(), callback);\n    } else if (this.priority < minPriority) {\n      return failAttempt(new Errors.TransportPriorityTooLow(), callback);\n    }\n\n    var connected = false;\n    var transport = this.transport.createConnection(\n      this.name,\n      this.priority,\n      this.options.key,\n      this.options\n    );\n    var handshake = null;\n\n    var onInitialized = function() {\n      transport.unbind('initialized', onInitialized);\n      transport.connect();\n    };\n    var onOpen = function() {\n      handshake = Factory.createHandshake(transport, function(result) {\n        connected = true;\n        unbindListeners();\n        callback(null, result);\n      });\n    };\n    var onError = function(error) {\n      unbindListeners();\n      callback(error);\n    };\n    var onClosed = function() {\n      unbindListeners();\n      var serializedTransport;\n\n      // The reason for this try/catch block is that on React Native\n      // the WebSocket object is circular. Therefore transport.socket will\n      // throw errors upon stringification. Collections.safeJSONStringify\n      // discards circular references when serializing.\n      serializedTransport = Collections.safeJSONStringify(transport);\n      callback(new Errors.TransportClosed(serializedTransport));\n    };\n\n    var unbindListeners = function() {\n      transport.unbind('initialized', onInitialized);\n      transport.unbind('open', onOpen);\n      transport.unbind('error', onError);\n      transport.unbind('closed', onClosed);\n    };\n\n    transport.bind('initialized', onInitialized);\n    transport.bind('open', onOpen);\n    transport.bind('error', onError);\n    transport.bind('closed', onClosed);\n\n    // connect will be called automatically after initialization\n    transport.initialize();\n\n    return {\n      abort: () => {\n        if (connected) {\n          return;\n        }\n        unbindListeners();\n        if (handshake) {\n          handshake.close();\n        } else {\n          transport.close();\n        }\n      },\n      forceMinPriority: p => {\n        if (connected) {\n          return;\n        }\n        if (this.priority < p) {\n          if (handshake) {\n            handshake.close();\n          } else {\n            transport.close();\n          }\n        }\n      }\n    };\n  }\n}\n\nfunction failAttempt(error: Error, callback: Function) {\n  Util.defer(function() {\n    callback(error);\n  });\n  return {\n    abort: function() {},\n    forceMinPriority: function() {}\n  };\n}\n","import * as Collections from '../utils/collections';\nimport Util from '../util';\nimport TransportManager from '../transports/transport_manager';\nimport * as Errors from '../errors';\nimport Strategy from './strategy';\nimport TransportStrategy from './transport_strategy';\nimport StrategyOptions from '../strategies/strategy_options';\nimport { Config } from '../config';\nimport Runtime from 'runtime';\n\nconst { Transports } = Runtime;\n\nexport var defineTransport = function(\n  config: Config,\n  name: string,\n  type: string,\n  priority: number,\n  options: StrategyOptions,\n  manager?: TransportManager\n): Strategy {\n  var transportClass = Transports[type];\n  if (!transportClass) {\n    throw new Errors.UnsupportedTransport(type);\n  }\n\n  var enabled =\n    (!config.enabledTransports ||\n      Collections.arrayIndexOf(config.enabledTransports, name) !== -1) &&\n    (!config.disabledTransports ||\n      Collections.arrayIndexOf(config.disabledTransports, name) === -1);\n\n  var transport;\n  if (enabled) {\n    options = Object.assign(\n      { ignoreNullOrigin: config.ignoreNullOrigin },\n      options\n    );\n\n    transport = new TransportStrategy(\n      name,\n      priority,\n      manager ? manager.getAssistant(transportClass) : transportClass,\n      options\n    );\n  } else {\n    transport = UnsupportedStrategy;\n  }\n\n  return transport;\n};\n\nvar UnsupportedStrategy: Strategy = {\n  isSupported: function() {\n    return false;\n  },\n  connect: function(_, callback) {\n    var deferred = Util.defer(function() {\n      callback(new Errors.UnsupportedStrategy());\n    });\n    return {\n      abort: function() {\n        deferred.ensureAborted();\n      },\n      forceMinPriority: function() {}\n    };\n  }\n};\n","import ConnectionManager from './connection/connection_manager';\nimport {\n  ChannelAuthorizationOptions,\n  UserAuthenticationOptions\n} from './auth/options';\nimport {\n  ChannelAuthorizerGenerator,\n  DeprecatedAuthOptions\n} from './auth/deprecated_channel_authorizer';\nimport { AuthTransport, Transport } from './config';\nimport * as nacl from 'tweetnacl';\nimport Logger from './logger';\n\nexport interface Options {\n  activityTimeout?: number;\n\n  auth?: DeprecatedAuthOptions; // DEPRECATED use channelAuthorization instead\n  authEndpoint?: string; // DEPRECATED use channelAuthorization instead\n  authTransport?: AuthTransport; // DEPRECATED use channelAuthorization instead\n  authorizer?: ChannelAuthorizerGenerator; // DEPRECATED use channelAuthorization instead\n\n  channelAuthorization?: ChannelAuthorizationOptions;\n  userAuthentication?: UserAuthenticationOptions;\n\n  cluster: string;\n  enableStats?: boolean;\n  disableStats?: boolean;\n  disabledTransports?: Transport[];\n  enabledTransports?: Transport[];\n  forceTLS?: boolean;\n  httpHost?: string;\n  httpPath?: string;\n  httpPort?: number;\n  httpsPort?: number;\n  ignoreNullOrigin?: boolean;\n  nacl?: nacl;\n  pongTimeout?: number;\n  statsHost?: string;\n  timelineParams?: any;\n  unavailableTimeout?: number;\n  wsHost?: string;\n  wsPath?: string;\n  wsPort?: number;\n  wssPort?: number;\n}\n\nexport interface ClusterOptions {\n  appKey: string;\n  cluster: string;\n}\n\nexport function validateOptions(options) {\n  if (options == null) {\n    throw 'You must pass an options object';\n  }\n  if (options.cluster == null) {\n    throw 'Options object must provide a cluster';\n  }\n  if ('disableStats' in options) {\n    Logger.warn(\n      'The disableStats option is deprecated in favor of enableStats'\n    );\n  }\n}\n","import {\n  UserAuthenticationCallback,\n  InternalAuthOptions,\n  UserAuthenticationHandler,\n  UserAuthenticationRequestParams,\n  AuthRequestType\n} from './options';\n\nimport Runtime from 'runtime';\n\nconst composeChannelQuery = (\n  params: UserAuthenticationRequestParams,\n  authOptions: InternalAuthOptions\n) => {\n  var query = 'socket_id=' + encodeURIComponent(params.socketId);\n\n  for (var key in authOptions.params) {\n    query +=\n      '&' +\n      encodeURIComponent(key) +\n      '=' +\n      encodeURIComponent(authOptions.params[key]);\n  }\n\n  if (authOptions.paramsProvider != null) {\n    let dynamicParams = authOptions.paramsProvider();\n    for (var key in dynamicParams) {\n      query +=\n        '&' +\n        encodeURIComponent(key) +\n        '=' +\n        encodeURIComponent(dynamicParams[key]);\n    }\n  }\n\n  return query;\n};\n\nconst UserAuthenticator = (\n  authOptions: InternalAuthOptions\n): UserAuthenticationHandler => {\n  if (typeof Runtime.getAuthorizers()[authOptions.transport] === 'undefined') {\n    throw `'${authOptions.transport}' is not a recognized auth transport`;\n  }\n\n  return (\n    params: UserAuthenticationRequestParams,\n    callback: UserAuthenticationCallback\n  ) => {\n    const query = composeChannelQuery(params, authOptions);\n\n    Runtime.getAuthorizers()[authOptions.transport](\n      Runtime,\n      query,\n      authOptions,\n      AuthRequestType.UserAuthentication,\n      callback\n    );\n  };\n};\n\nexport default UserAuthenticator;\n","import {\n  AuthRequestType,\n  InternalAuthOptions,\n  ChannelAuthorizationHandler,\n  ChannelAuthorizationRequestParams,\n  ChannelAuthorizationCallback\n} from './options';\n\nimport Runtime from 'runtime';\n\nconst composeChannelQuery = (\n  params: ChannelAuthorizationRequestParams,\n  authOptions: InternalAuthOptions\n) => {\n  var query = 'socket_id=' + encodeURIComponent(params.socketId);\n\n  query += '&channel_name=' + encodeURIComponent(params.channelName);\n\n  for (var key in authOptions.params) {\n    query +=\n      '&' +\n      encodeURIComponent(key) +\n      '=' +\n      encodeURIComponent(authOptions.params[key]);\n  }\n\n  if (authOptions.paramsProvider != null) {\n    let dynamicParams = authOptions.paramsProvider();\n    for (var key in dynamicParams) {\n      query +=\n        '&' +\n        encodeURIComponent(key) +\n        '=' +\n        encodeURIComponent(dynamicParams[key]);\n    }\n  }\n\n  return query;\n};\n\nconst ChannelAuthorizer = (\n  authOptions: InternalAuthOptions\n): ChannelAuthorizationHandler => {\n  if (typeof Runtime.getAuthorizers()[authOptions.transport] === 'undefined') {\n    throw `'${authOptions.transport}' is not a recognized auth transport`;\n  }\n\n  return (\n    params: ChannelAuthorizationRequestParams,\n    callback: ChannelAuthorizationCallback\n  ) => {\n    const query = composeChannelQuery(params, authOptions);\n\n    Runtime.getAuthorizers()[authOptions.transport](\n      Runtime,\n      query,\n      authOptions,\n      AuthRequestType.ChannelAuthorization,\n      callback\n    );\n  };\n};\n\nexport default ChannelAuthorizer;\n","import { Options } from './options';\nimport Defaults from './defaults';\nimport {\n  ChannelAuthorizationHandler,\n  UserAuthenticationHandler,\n  ChannelAuthorizationOptions\n} from './auth/options';\nimport UserAuthenticator from './auth/user_authenticator';\nimport ChannelAuthorizer from './auth/channel_authorizer';\nimport { ChannelAuthorizerProxy } from './auth/deprecated_channel_authorizer';\nimport Runtime from 'runtime';\nimport * as nacl from 'tweetnacl';\n\nexport type AuthTransport = 'ajax' | 'jsonp';\nexport type Transport =\n  | 'ws'\n  | 'wss'\n  | 'xhr_streaming'\n  | 'xhr_polling'\n  | 'sockjs';\n\nexport interface Config {\n  // these are all 'required' config parameters, it's not necessary for the user\n  // to set them, but they have configured defaults.\n  activityTimeout: number;\n  enableStats: boolean;\n  httpHost: string;\n  httpPath: string;\n  httpPort: number;\n  httpsPort: number;\n  pongTimeout: number;\n  statsHost: string;\n  unavailableTimeout: number;\n  useTLS: boolean;\n  wsHost: string;\n  wsPath: string;\n  wsPort: number;\n  wssPort: number;\n  userAuthenticator: UserAuthenticationHandler;\n  channelAuthorizer: ChannelAuthorizationHandler;\n\n  // these are all optional parameters or overrrides. The customer can set these\n  // but it's not strictly necessary\n  forceTLS?: boolean;\n  cluster?: string;\n  disabledTransports?: Transport[];\n  enabledTransports?: Transport[];\n  ignoreNullOrigin?: boolean;\n  nacl?: nacl;\n  timelineParams?: any;\n}\n\n// getConfig mainly sets the defaults for the options that are not provided\nexport function getConfig(opts: Options, pusher): Config {\n  let config: Config = {\n    activityTimeout: opts.activityTimeout || Defaults.activityTimeout,\n    cluster: opts.cluster,\n    httpPath: opts.httpPath || Defaults.httpPath,\n    httpPort: opts.httpPort || Defaults.httpPort,\n    httpsPort: opts.httpsPort || Defaults.httpsPort,\n    pongTimeout: opts.pongTimeout || Defaults.pongTimeout,\n    statsHost: opts.statsHost || Defaults.stats_host,\n    unavailableTimeout: opts.unavailableTimeout || Defaults.unavailableTimeout,\n    wsPath: opts.wsPath || Defaults.wsPath,\n    wsPort: opts.wsPort || Defaults.wsPort,\n    wssPort: opts.wssPort || Defaults.wssPort,\n\n    enableStats: getEnableStatsConfig(opts),\n    httpHost: getHttpHost(opts),\n    useTLS: shouldUseTLS(opts),\n    wsHost: getWebsocketHost(opts),\n\n    userAuthenticator: buildUserAuthenticator(opts),\n    channelAuthorizer: buildChannelAuthorizer(opts, pusher)\n  };\n\n  if ('disabledTransports' in opts)\n    config.disabledTransports = opts.disabledTransports;\n  if ('enabledTransports' in opts)\n    config.enabledTransports = opts.enabledTransports;\n  if ('ignoreNullOrigin' in opts)\n    config.ignoreNullOrigin = opts.ignoreNullOrigin;\n  if ('timelineParams' in opts) config.timelineParams = opts.timelineParams;\n  if ('nacl' in opts) {\n    config.nacl = opts.nacl;\n  }\n\n  return config;\n}\n\nfunction getHttpHost(opts: Options): string {\n  if (opts.httpHost) {\n    return opts.httpHost;\n  }\n  if (opts.cluster) {\n    return `sockjs-${opts.cluster}.pusher.com`;\n  }\n  return Defaults.httpHost;\n}\n\nfunction getWebsocketHost(opts: Options): string {\n  if (opts.wsHost) {\n    return opts.wsHost;\n  }\n  return getWebsocketHostFromCluster(opts.cluster);\n}\n\nfunction getWebsocketHostFromCluster(cluster: string): string {\n  return `ws-${cluster}.pusher.com`;\n}\n\nfunction shouldUseTLS(opts: Options): boolean {\n  if (Runtime.getProtocol() === 'https:') {\n    return true;\n  } else if (opts.forceTLS === false) {\n    return false;\n  }\n  return true;\n}\n\n// if enableStats is set take the value\n// if disableStats is set take the inverse\n// otherwise default to false\nfunction getEnableStatsConfig(opts: Options): boolean {\n  if ('enableStats' in opts) {\n    return opts.enableStats;\n  }\n  if ('disableStats' in opts) {\n    return !opts.disableStats;\n  }\n  return false;\n}\n\nfunction buildUserAuthenticator(opts: Options): UserAuthenticationHandler {\n  const userAuthentication = {\n    ...Defaults.userAuthentication,\n    ...opts.userAuthentication\n  };\n  if (\n    'customHandler' in userAuthentication &&\n    userAuthentication['customHandler'] != null\n  ) {\n    return userAuthentication['customHandler'];\n  }\n\n  return UserAuthenticator(userAuthentication);\n}\n\nfunction buildChannelAuth(opts: Options, pusher): ChannelAuthorizationOptions {\n  let channelAuthorization: ChannelAuthorizationOptions;\n  if ('channelAuthorization' in opts) {\n    channelAuthorization = {\n      ...Defaults.channelAuthorization,\n      ...opts.channelAuthorization\n    };\n  } else {\n    channelAuthorization = {\n      transport: opts.authTransport || Defaults.authTransport,\n      endpoint: opts.authEndpoint || Defaults.authEndpoint\n    };\n    if ('auth' in opts) {\n      if ('params' in opts.auth) channelAuthorization.params = opts.auth.params;\n      if ('headers' in opts.auth)\n        channelAuthorization.headers = opts.auth.headers;\n    }\n    if ('authorizer' in opts)\n      channelAuthorization.customHandler = ChannelAuthorizerProxy(\n        pusher,\n        channelAuthorization,\n        opts.authorizer\n      );\n  }\n  return channelAuthorization;\n}\n\nfunction buildChannelAuthorizer(\n  opts: Options,\n  pusher\n): ChannelAuthorizationHandler {\n  const channelAuthorization = buildChannelAuth(opts, pusher);\n  if (\n    'customHandler' in channelAuthorization &&\n    channelAuthorization['customHandler'] != null\n  ) {\n    return channelAuthorization['customHandler'];\n  }\n\n  return ChannelAuthorizer(channelAuthorization);\n}\n","import Channel from '../channels/channel';\nimport {\n  ChannelAuthorizationCallback,\n  ChannelAuthorizationHandler,\n  ChannelAuthorizationRequestParams,\n  InternalAuthOptions\n} from './options';\n\nexport interface DeprecatedChannelAuthorizer {\n  authorize(socketId: string, callback: ChannelAuthorizationCallback): void;\n}\n\nexport interface ChannelAuthorizerGenerator {\n  (\n    channel: Channel,\n    options: DeprecatedAuthorizerOptions\n  ): DeprecatedChannelAuthorizer;\n}\n\nexport interface DeprecatedAuthOptions {\n  params?: any;\n  headers?: any;\n}\n\nexport interface DeprecatedAuthorizerOptions {\n  authTransport: 'ajax' | 'jsonp';\n  authEndpoint: string;\n  auth?: DeprecatedAuthOptions;\n}\n\nexport const ChannelAuthorizerProxy = (\n  pusher,\n  authOptions: InternalAuthOptions,\n  channelAuthorizerGenerator: ChannelAuthorizerGenerator\n): ChannelAuthorizationHandler => {\n  const deprecatedAuthorizerOptions: DeprecatedAuthorizerOptions = {\n    authTransport: authOptions.transport,\n    authEndpoint: authOptions.endpoint,\n    auth: {\n      params: authOptions.params,\n      headers: authOptions.headers\n    }\n  };\n  return (\n    params: ChannelAuthorizationRequestParams,\n    callback: ChannelAuthorizationCallback\n  ) => {\n    const channel = pusher.channel(params.channelName);\n    // This line creates a new channel authorizer every time.\n    // In the past, this was only done once per channel and reused.\n    // We can do that again if we want to keep this behavior intact.\n    const channelAuthorizer: DeprecatedChannelAuthorizer = channelAuthorizerGenerator(\n      channel,\n      deprecatedAuthorizerOptions\n    );\n    channelAuthorizer.authorize(params.socketId, callback);\n  };\n};\n","import Logger from './logger';\nimport Pusher from './pusher';\nimport EventsDispatcher from './events/dispatcher';\n\nexport default class WatchlistFacade extends EventsDispatcher {\n  private pusher: Pusher;\n\n  public constructor(pusher: Pusher) {\n    super(function(eventName, data) {\n      Logger.debug(`No callbacks on watchlist events for ${eventName}`);\n    });\n\n    this.pusher = pusher;\n    this.bindWatchlistInternalEvent();\n  }\n\n  handleEvent(pusherEvent) {\n    pusherEvent.data.events.forEach(watchlistEvent => {\n      this.emit(watchlistEvent.name, watchlistEvent);\n    });\n  }\n\n  private bindWatchlistInternalEvent() {\n    this.pusher.connection.bind('message', pusherEvent => {\n      var eventName = pusherEvent.event;\n      if (eventName === 'pusher_internal:watchlist_events') {\n        this.handleEvent(pusherEvent);\n      }\n    });\n  }\n}\n","function flatPromise() {\n  let resolve, reject;\n  const promise = new Promise((res, rej) => {\n    resolve = res;\n    reject = rej;\n  });\n  return { promise, resolve, reject };\n}\n\nexport default flatPromise;\n","import Pusher from './pusher';\nimport Logger from './logger';\nimport {\n  UserAuthenticationData,\n  UserAuthenticationCallback\n} from './auth/options';\nimport Channel from './channels/channel';\nimport WatchlistFacade from './watchlist';\nimport EventsDispatcher from './events/dispatcher';\nimport flatPromise from './utils/flat_promise';\n\nexport default class UserFacade extends EventsDispatcher {\n  pusher: Pusher;\n  signin_requested: boolean = false;\n  user_data: any = null;\n  serverToUserChannel: Channel = null;\n  signinDonePromise: Promise<any> = null;\n  watchlist: WatchlistFacade;\n  private _signinDoneResolve: Function = null;\n\n  public constructor(pusher: Pusher) {\n    super(function(eventName, data) {\n      Logger.debug('No callbacks on user for ' + eventName);\n    });\n    this.pusher = pusher;\n    this.pusher.connection.bind('state_change', ({ previous, current }) => {\n      if (previous !== 'connected' && current === 'connected') {\n        this._signin();\n      }\n      if (previous === 'connected' && current !== 'connected') {\n        this._cleanup();\n        this._newSigninPromiseIfNeeded();\n      }\n    });\n\n    this.watchlist = new WatchlistFacade(pusher);\n\n    this.pusher.connection.bind('message', event => {\n      var eventName = event.event;\n      if (eventName === 'pusher:signin_success') {\n        this._onSigninSuccess(event.data);\n      }\n      if (\n        this.serverToUserChannel &&\n        this.serverToUserChannel.name === event.channel\n      ) {\n        this.serverToUserChannel.handleEvent(event);\n      }\n    });\n  }\n\n  public signin() {\n    if (this.signin_requested) {\n      return;\n    }\n\n    this.signin_requested = true;\n    this._signin();\n  }\n\n  private _signin() {\n    if (!this.signin_requested) {\n      return;\n    }\n\n    this._newSigninPromiseIfNeeded();\n\n    if (this.pusher.connection.state !== 'connected') {\n      // Signin will be attempted when the connection is connected\n      return;\n    }\n\n    this.pusher.config.userAuthenticator(\n      {\n        socketId: this.pusher.connection.socket_id\n      },\n      this._onAuthorize\n    );\n  }\n\n  private _onAuthorize: UserAuthenticationCallback = (\n    err,\n    authData: UserAuthenticationData\n  ) => {\n    if (err) {\n      Logger.warn(`Error during signin: ${err}`);\n      this._cleanup();\n      return;\n    }\n\n    this.pusher.send_event('pusher:signin', {\n      auth: authData.auth,\n      user_data: authData.user_data\n    });\n\n    // Later when we get pusher:singin_success event, the user will be marked as signed in\n  };\n\n  private _onSigninSuccess(data: any) {\n    try {\n      this.user_data = JSON.parse(data.user_data);\n    } catch (e) {\n      Logger.error(`Failed parsing user data after signin: ${data.user_data}`);\n      this._cleanup();\n      return;\n    }\n\n    if (typeof this.user_data.id !== 'string' || this.user_data.id === '') {\n      Logger.error(\n        `user_data doesn't contain an id. user_data: ${this.user_data}`\n      );\n      this._cleanup();\n      return;\n    }\n\n    // Signin succeeded\n    this._signinDoneResolve();\n    this._subscribeChannels();\n  }\n\n  private _subscribeChannels() {\n    const ensure_subscribed = channel => {\n      if (channel.subscriptionPending && channel.subscriptionCancelled) {\n        channel.reinstateSubscription();\n      } else if (\n        !channel.subscriptionPending &&\n        this.pusher.connection.state === 'connected'\n      ) {\n        channel.subscribe();\n      }\n    };\n\n    this.serverToUserChannel = new Channel(\n      `#server-to-user-${this.user_data.id}`,\n      this.pusher\n    );\n    this.serverToUserChannel.bind_global((eventName, data) => {\n      if (\n        eventName.indexOf('pusher_internal:') === 0 ||\n        eventName.indexOf('pusher:') === 0\n      ) {\n        // ignore internal events\n        return;\n      }\n      this.emit(eventName, data);\n    });\n    ensure_subscribed(this.serverToUserChannel);\n  }\n\n  private _cleanup() {\n    this.user_data = null;\n    if (this.serverToUserChannel) {\n      this.serverToUserChannel.unbind_all();\n      this.serverToUserChannel.disconnect();\n      this.serverToUserChannel = null;\n    }\n\n    if (this.signin_requested) {\n      // If signin is in progress and cleanup is called,\n      // Mark the current signin process as done.\n      this._signinDoneResolve();\n    }\n  }\n\n  private _newSigninPromiseIfNeeded() {\n    if (!this.signin_requested) {\n      return;\n    }\n\n    // If there is a promise and it is not resolved, return without creating a new one.\n    if (this.signinDonePromise && !(this.signinDonePromise as any).done) {\n      return;\n    }\n\n    // This promise is never rejected.\n    // It gets resolved when the signin process is done whether it failed or succeeded\n    const { promise, resolve, reject: _ } = flatPromise();\n    (promise as any).done = false;\n    const setDone = () => {\n      (promise as any).done = true;\n    };\n    promise.then(setDone).catch(setDone);\n    this.signinDonePromise = promise;\n    this._signinDoneResolve = resolve;\n  }\n}\n","import AbstractRuntime from '../runtimes/interface';\nimport Runtime from 'runtime';\nimport * as Collections from './utils/collections';\nimport Channels from './channels/channels';\nimport Channel from './channels/channel';\nimport { default as EventsDispatcher } from './events/dispatcher';\nimport Timeline from './timeline/timeline';\nimport TimelineSender from './timeline/timeline_sender';\nimport TimelineLevel from './timeline/level';\nimport { defineTransport } from './strategies/strategy_builder';\nimport ConnectionManager from './connection/connection_manager';\nimport { PeriodicTimer } from './utils/timers';\nimport Defaults from './defaults';\nimport Logger from './logger';\nimport Factory from './utils/factory';\nimport { Options, ClusterOptions, validateOptions } from './options';\nimport { Config, getConfig } from './config';\nimport StrategyOptions from './strategies/strategy_options';\nimport UserFacade from './user';\n\nexport default class Pusher {\n  /*  STATIC PROPERTIES */\n  static instances: Pusher[] = [];\n  static isReady: boolean = false;\n  static logToConsole: boolean = false;\n\n  // for jsonp\n  static Runtime: AbstractRuntime = Runtime;\n  static ScriptReceivers: any = (<any>Runtime).ScriptReceivers;\n  static DependenciesReceivers: any = (<any>Runtime).DependenciesReceivers;\n  static auth_callbacks: any = (<any>Runtime).auth_callbacks;\n\n  static ready() {\n    Pusher.isReady = true;\n    for (var i = 0, l = Pusher.instances.length; i < l; i++) {\n      Pusher.instances[i].connect();\n    }\n  }\n\n  static log: (message: any) => void;\n\n  private static getClientFeatures(): string[] {\n    return Collections.keys(\n      Collections.filterObject({ ws: Runtime.Transports.ws }, function(t) {\n        return t.isSupported({});\n      })\n    );\n  }\n\n  /* INSTANCE PROPERTIES */\n  key: string;\n  options: Options;\n  config: Config;\n  channels: Channels;\n  global_emitter: EventsDispatcher;\n  sessionID: number;\n  timeline: Timeline;\n  timelineSender: TimelineSender;\n  connection: ConnectionManager;\n  timelineSenderTimer: PeriodicTimer;\n  user: UserFacade;\n  constructor(app_key: string, options: Options) {\n    checkAppKey(app_key);\n    validateOptions(options);\n    this.key = app_key;\n    this.config = getConfig(options, this);\n\n    this.channels = Factory.createChannels();\n    this.global_emitter = new EventsDispatcher();\n    this.sessionID = Runtime.randomInt(1000000000);\n\n    this.timeline = new Timeline(this.key, this.sessionID, {\n      cluster: this.config.cluster,\n      features: Pusher.getClientFeatures(),\n      params: this.config.timelineParams || {},\n      limit: 50,\n      level: TimelineLevel.INFO,\n      version: Defaults.VERSION\n    });\n    if (this.config.enableStats) {\n      this.timelineSender = Factory.createTimelineSender(this.timeline, {\n        host: this.config.statsHost,\n        path: '/timeline/v2/' + Runtime.TimelineTransport.name\n      });\n    }\n\n    var getStrategy = (options: StrategyOptions) => {\n      return Runtime.getDefaultStrategy(this.config, options, defineTransport);\n    };\n\n    this.connection = Factory.createConnectionManager(this.key, {\n      getStrategy: getStrategy,\n      timeline: this.timeline,\n      activityTimeout: this.config.activityTimeout,\n      pongTimeout: this.config.pongTimeout,\n      unavailableTimeout: this.config.unavailableTimeout,\n      useTLS: Boolean(this.config.useTLS)\n    });\n\n    this.connection.bind('connected', () => {\n      this.subscribeAll();\n      if (this.timelineSender) {\n        this.timelineSender.send(this.connection.isUsingTLS());\n      }\n    });\n\n    this.connection.bind('message', event => {\n      var eventName = event.event;\n      var internal = eventName.indexOf('pusher_internal:') === 0;\n      if (event.channel) {\n        var channel = this.channel(event.channel);\n        if (channel) {\n          channel.handleEvent(event);\n        }\n      }\n      // Emit globally [deprecated]\n      if (!internal) {\n        this.global_emitter.emit(event.event, event.data);\n      }\n    });\n    this.connection.bind('connecting', () => {\n      this.channels.disconnect();\n    });\n    this.connection.bind('disconnected', () => {\n      this.channels.disconnect();\n    });\n    this.connection.bind('error', err => {\n      Logger.warn(err);\n    });\n\n    Pusher.instances.push(this);\n    this.timeline.info({ instances: Pusher.instances.length });\n\n    this.user = new UserFacade(this);\n\n    if (Pusher.isReady) {\n      this.connect();\n    }\n  }\n\n  /**\n   * Allows you to switch Pusher cluster without\n   * losing all the channels/subscription binding\n   * as this is internally managed by the SDK.\n   */\n  switchCluster(options: ClusterOptions) {\n    const { appKey, cluster } = options;\n    this.key = appKey;\n    this.options = { ...this.options, cluster };\n    this.config = getConfig(this.options, this);\n    this.connection.switchCluster(this.key);\n  }\n\n  channel(name: string): Channel {\n    return this.channels.find(name);\n  }\n\n  allChannels(): Channel[] {\n    return this.channels.all();\n  }\n\n  connect() {\n    this.connection.connect();\n\n    if (this.timelineSender) {\n      if (!this.timelineSenderTimer) {\n        var usingTLS = this.connection.isUsingTLS();\n        var timelineSender = this.timelineSender;\n        this.timelineSenderTimer = new PeriodicTimer(60000, function() {\n          timelineSender.send(usingTLS);\n        });\n      }\n    }\n  }\n\n  disconnect() {\n    this.connection.disconnect();\n\n    if (this.timelineSenderTimer) {\n      this.timelineSenderTimer.ensureAborted();\n      this.timelineSenderTimer = null;\n    }\n  }\n\n  bind(event_name: string, callback: Function, context?: any): Pusher {\n    this.global_emitter.bind(event_name, callback, context);\n    return this;\n  }\n\n  unbind(event_name?: string, callback?: Function, context?: any): Pusher {\n    this.global_emitter.unbind(event_name, callback, context);\n    return this;\n  }\n\n  bind_global(callback: Function): Pusher {\n    this.global_emitter.bind_global(callback);\n    return this;\n  }\n\n  unbind_global(callback?: Function): Pusher {\n    this.global_emitter.unbind_global(callback);\n    return this;\n  }\n\n  unbind_all(callback?: Function): Pusher {\n    this.global_emitter.unbind_all();\n    return this;\n  }\n\n  subscribeAll() {\n    var channelName;\n    for (channelName in this.channels.channels) {\n      if (this.channels.channels.hasOwnProperty(channelName)) {\n        this.subscribe(channelName);\n      }\n    }\n  }\n\n  subscribe(channel_name: string) {\n    var channel = this.channels.add(channel_name, this);\n    if (channel.subscriptionPending && channel.subscriptionCancelled) {\n      channel.reinstateSubscription();\n    } else if (\n      !channel.subscriptionPending &&\n      this.connection.state === 'connected'\n    ) {\n      channel.subscribe();\n    }\n    return channel;\n  }\n\n  unsubscribe(channel_name: string) {\n    var channel = this.channels.find(channel_name);\n    if (channel && channel.subscriptionPending) {\n      channel.cancelSubscription();\n    } else {\n      channel = this.channels.remove(channel_name);\n      if (channel && channel.subscribed) {\n        channel.unsubscribe();\n      }\n    }\n  }\n\n  send_event(event_name: string, data: any, channel?: string) {\n    return this.connection.send_event(event_name, data, channel);\n  }\n\n  shouldUseTLS(): boolean {\n    return this.config.useTLS;\n  }\n\n  signin() {\n    this.user.signin();\n  }\n}\n\nfunction checkAppKey(key) {\n  if (key === null || key === undefined) {\n    throw 'You must pass your app key when you instantiate Pusher.';\n  }\n}\n\nRuntime.setup(Pusher);\n","import Pusher from './pusher';\nimport { Options, validateOptions } from './options';\nimport * as nacl from 'tweetnacl';\n\nexport default class PusherWithEncryption extends Pusher {\n  constructor(app_key: string, options: Options) {\n    Pusher.logToConsole = PusherWithEncryption.logToConsole;\n    Pusher.log = PusherWithEncryption.log;\n\n    validateOptions(options);\n    options.nacl = nacl;\n    super(app_key, options);\n  }\n}\n"],"sourceRoot":""}