Last change
on this file since e29cc2e was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
initial commit
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File size:
1.1 KB
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[6a3a178] | 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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