mirror of https://github.com/jkjoy/sunpeiwen.git
45 lines
768 B
JavaScript
45 lines
768 B
JavaScript
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var isArray = require('./isArray');
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/**
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* Casts `value` as an array if it's not one.
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*
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* @static
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* @memberOf _
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* @since 4.4.0
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* @category Lang
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* @param {*} value The value to inspect.
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* @returns {Array} Returns the cast array.
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* @example
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*
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* _.castArray(1);
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* // => [1]
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*
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* _.castArray({ 'a': 1 });
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* // => [{ 'a': 1 }]
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*
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* _.castArray('abc');
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* // => ['abc']
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*
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* _.castArray(null);
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* // => [null]
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*
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* _.castArray(undefined);
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* // => [undefined]
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*
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* _.castArray();
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* // => []
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*
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* var array = [1, 2, 3];
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* console.log(_.castArray(array) === array);
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* // => true
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*/
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function castArray() {
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if (!arguments.length) {
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return [];
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}
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var value = arguments[0];
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return isArray(value) ? value : [value];
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}
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module.exports = castArray;
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