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on this file since 571e0df was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
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1 | var baseClamp = require('./_baseClamp'),
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2 | toInteger = require('./toInteger');
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3 |
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4 | /** Used as references for the maximum length and index of an array. */
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5 | var MAX_ARRAY_LENGTH = 4294967295;
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6 |
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7 | /**
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8 | * Converts `value` to an integer suitable for use as the length of an
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9 | * array-like object.
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10 | *
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11 | * **Note:** This method is based on
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12 | * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).
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13 | *
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14 | * @static
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15 | * @memberOf _
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16 | * @since 4.0.0
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17 | * @category Lang
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18 | * @param {*} value The value to convert.
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19 | * @returns {number} Returns the converted integer.
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20 | * @example
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21 | *
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22 | * _.toLength(3.2);
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23 | * // => 3
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24 | *
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25 | * _.toLength(Number.MIN_VALUE);
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26 | * // => 0
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27 | *
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28 | * _.toLength(Infinity);
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29 | * // => 4294967295
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30 | *
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31 | * _.toLength('3.2');
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32 | * // => 3
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33 | */
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34 | function toLength(value) {
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35 | return value ? baseClamp(toInteger(value), 0, MAX_ARRAY_LENGTH) : 0;
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36 | }
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37 |
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38 | module.exports = toLength;
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