You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
39 lines
868 B
JavaScript
39 lines
868 B
JavaScript
5 years ago
|
var baseClamp = require('./_baseClamp'),
|
||
|
|
toInteger = require('./toInteger');
|
||
|
|
|
||
|
|
/** Used as references for the maximum length and index of an array. */
|
||
|
|
var MAX_ARRAY_LENGTH = 4294967295;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Converts `value` to an integer suitable for use as the length of an
|
||
|
|
* array-like object.
|
||
|
|
*
|
||
|
|
* **Note:** This method is based on
|
||
|
|
* [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).
|
||
|
|
*
|
||
|
|
* @static
|
||
|
|
* @memberOf _
|
||
|
|
* @since 4.0.0
|
||
|
|
* @category Lang
|
||
|
|
* @param {*} value The value to convert.
|
||
|
|
* @returns {number} Returns the converted integer.
|
||
|
|
* @example
|
||
|
|
*
|
||
|
|
* _.toLength(3.2);
|
||
|
|
* // => 3
|
||
|
|
*
|
||
|
|
* _.toLength(Number.MIN_VALUE);
|
||
|
|
* // => 0
|
||
|
|
*
|
||
|
|
* _.toLength(Infinity);
|
||
|
|
* // => 4294967295
|
||
|
|
*
|
||
|
|
* _.toLength('3.2');
|
||
|
|
* // => 3
|
||
|
|
*/
|
||
|
|
function toLength(value) {
|
||
|
|
return value ? baseClamp(toInteger(value), 0, MAX_ARRAY_LENGTH) : 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
module.exports = toLength;
|