1 | 'use strict';
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2 | var $ = require('../internals/export');
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3 | var uncurryThis = require('../internals/function-uncurry-this');
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4 | var toString = require('../internals/to-string');
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5 |
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6 | var charAt = uncurryThis(''.charAt);
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7 | var charCodeAt = uncurryThis(''.charCodeAt);
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8 | var exec = uncurryThis(/./.exec);
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9 | var numberToString = uncurryThis(1.0.toString);
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10 | var toUpperCase = uncurryThis(''.toUpperCase);
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11 |
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12 | var raw = /[\w*+\-./@]/;
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13 |
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14 | var hex = function (code, length) {
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15 | var result = numberToString(code, 16);
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16 | while (result.length < length) result = '0' + result;
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17 | return result;
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18 | };
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19 |
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20 |
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21 |
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22 | $({ global: true }, {
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23 | escape: function escape(string) {
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24 | var str = toString(string);
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25 | var result = '';
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26 | var length = str.length;
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27 | var index = 0;
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28 | var chr, code;
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29 | while (index < length) {
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30 | chr = charAt(str, index++);
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31 | if (exec(raw, chr)) {
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32 | result += chr;
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33 | } else {
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34 | code = charCodeAt(chr, 0);
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35 | if (code < 256) {
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36 | result += '%' + hex(code, 2);
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37 | } else {
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38 | result += '%u' + toUpperCase(hex(code, 4));
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39 | }
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40 | }
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41 | } return result;
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42 | }
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43 | });
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