Last change
on this file since 76712b2 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
initial commit
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1 | var Symbol = require('./_Symbol'),
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2 | arrayMap = require('./_arrayMap'),
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3 | isArray = require('./isArray'),
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4 | isSymbol = require('./isSymbol');
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5 |
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6 | /** Used as references for various `Number` constants. */
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7 | var INFINITY = 1 / 0;
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8 |
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9 | /** Used to convert symbols to primitives and strings. */
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10 | var symbolProto = Symbol ? Symbol.prototype : undefined,
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11 | symbolToString = symbolProto ? symbolProto.toString : undefined;
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12 |
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13 | /**
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14 | * The base implementation of `_.toString` which doesn't convert nullish
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15 | * values to empty strings.
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16 | *
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17 | * @private
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18 | * @param {*} value The value to process.
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19 | * @returns {string} Returns the string.
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20 | */
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21 | function baseToString(value) {
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22 | // Exit early for strings to avoid a performance hit in some environments.
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23 | if (typeof value == 'string') {
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24 | return value;
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25 | }
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26 | if (isArray(value)) {
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27 | // Recursively convert values (susceptible to call stack limits).
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28 | return arrayMap(value, baseToString) + '';
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29 | }
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30 | if (isSymbol(value)) {
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31 | return symbolToString ? symbolToString.call(value) : '';
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32 | }
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33 | var result = (value + '');
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34 | return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;
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35 | }
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36 |
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37 | module.exports = baseToString;
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