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| 6 | !function(exports) {
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| 7 | var Str = exports.String || exports
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| 8 | , Str$ = Str.prototype || exports
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| 9 | , fromCharCode = String.fromCharCode
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| 10 |
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| 11 | if (!Str$.startsWith) Str$.startsWith = function(str) {
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| 12 | return this.lastIndexOf(str, 0) === 0
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| 13 | }
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| 14 |
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| 15 | if (!Str$.endsWith) Str$.endsWith = function(str) {
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| 16 | return this.indexOf(str, this.length - str.length) !== -1
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| 17 | }
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| 18 |
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| 19 | if (!Str$.codePointAt) Str$.codePointAt = function(pos) {
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| 20 | var str = this
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| 21 | , code = str.charCodeAt(pos)
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| 22 |
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| 23 | return code >= 0xD800 && code <= 0xDBFF &&
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| 24 | (str = str.charCodeAt(pos + 1)) >= 0xDC00 && str <= 0xDFFF ?
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| 25 | (code - 0xD800) * 0x400 + str - 0xDC00 + 0x10000 :
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| 26 | code === code ? code :
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| 27 | void 0
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| 28 | }
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| 29 |
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| 30 | if (!Str.fromCodePoint) Str.fromCodePoint = function() {
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| 31 | var code
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| 32 | , arr = arguments
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| 33 | , len = arr.length
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| 34 | , pos = 0
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| 35 | , out = []
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| 36 | , str = ""
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| 37 |
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| 38 | for (; pos < len; ) {
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| 39 | code = arr[pos++]
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| 40 | if (code <= 0xFFFF) {
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| 41 | out.push(code)
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| 42 | } else {
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| 43 | code -= 0x10000
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| 44 | out.push(
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| 45 | (code >> 10) + 0xD800,
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| 46 | (code % 0x400) + 0xDC00
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| 47 | )
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| 48 | }
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| 49 | if (len === pos || out.length > 8191) {
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| 50 | str += fromCharCode.apply(null, out)
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| 51 | out.length = 0
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| 52 | }
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| 53 | }
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| 54 |
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| 55 | return str
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| 56 | }
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| 57 |
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| 58 | if (!exports.TextEncoder) {
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| 59 | exports.TextEncoder = exports.TextDecoder = TextEncoder
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| 60 | }
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| 61 |
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| 62 |
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| 63 | function TextEncoder(encoding) {
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| 64 | this.encoding = encoding || "utf-8"
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| 65 | }
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| 66 | TextEncoder.prototype = {
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| 67 | encode: function(str) {
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| 68 | var s = unescape(encodeURIComponent(str))
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| 69 | , len = s.length
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| 70 | , arr = new Uint8Array(len)
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| 71 | for (; len--; ) {
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| 72 | arr[len] = s.charCodeAt(len)
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| 73 | }
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| 74 | return arr
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| 75 | },
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| 76 | decode: function(arr) {
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| 77 | var i, out
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| 78 | , map = TextEncoder[this.encoding]
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| 79 | if (map) {
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| 80 |
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| 81 | out = []
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| 82 | for (i = arr.length; i--; ) {
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| 83 | out[i] = (
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| 84 | arr[i] > 127 ?
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| 85 | map.charCodeAt(arr[i] - 128) :
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| 86 | arr[i]
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| 87 | )
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| 88 | }
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| 89 | return fromCharCode.apply(null, out)
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| 90 | }
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| 91 | return decodeURIComponent(escape(fromCharCode.apply(null, arr)))
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| 92 | }
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| 93 | }
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| 94 | }(this)
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| 95 |
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