forked from zhurui/management
59 lines
1.4 KiB
JavaScript
59 lines
1.4 KiB
JavaScript
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var Symbol = require('./_Symbol'),
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copyArray = require('./_copyArray'),
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getTag = require('./_getTag'),
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isArrayLike = require('./isArrayLike'),
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isString = require('./isString'),
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iteratorToArray = require('./_iteratorToArray'),
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mapToArray = require('./_mapToArray'),
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setToArray = require('./_setToArray'),
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stringToArray = require('./_stringToArray'),
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values = require('./values');
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/** `Object#toString` result references. */
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var mapTag = '[object Map]',
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setTag = '[object Set]';
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/** Built-in value references. */
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var symIterator = Symbol ? Symbol.iterator : undefined;
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/**
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* Converts `value` to an array.
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*
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* @static
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* @since 0.1.0
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* @memberOf _
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* @category Lang
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* @param {*} value The value to convert.
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* @returns {Array} Returns the converted array.
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* @example
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*
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* _.toArray({ 'a': 1, 'b': 2 });
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* // => [1, 2]
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*
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* _.toArray('abc');
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* // => ['a', 'b', 'c']
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*
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* _.toArray(1);
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* // => []
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*
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* _.toArray(null);
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* // => []
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*/
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function toArray(value) {
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if (!value) {
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return [];
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}
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if (isArrayLike(value)) {
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return isString(value) ? stringToArray(value) : copyArray(value);
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}
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if (symIterator && value[symIterator]) {
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return iteratorToArray(value[symIterator]());
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}
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var tag = getTag(value),
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func = tag == mapTag ? mapToArray : (tag == setTag ? setToArray : values);
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return func(value);
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}
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module.exports = toArray;
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