Last change
on this file since 571e0df was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
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1 | var isSymbol = require('./isSymbol');
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2 |
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3 | /** Used as references for various `Number` constants. */
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4 | var INFINITY = 1 / 0;
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5 |
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6 | /**
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7 | * Converts `value` to a string key if it's not a string or symbol.
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8 | *
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9 | * @private
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10 | * @param {*} value The value to inspect.
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11 | * @returns {string|symbol} Returns the key.
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12 | */
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13 | function toKey(value) {
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14 | if (typeof value == 'string' || isSymbol(value)) {
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15 | return value;
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16 | }
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17 | var result = (value + '');
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18 | return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;
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19 | }
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20 |
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21 | module.exports = toKey;
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