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45 lines
1.3 KiB
45 lines
1.3 KiB
var getNative = require('../internal/getNative'),
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isArrayLike = require('../internal/isArrayLike'),
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isObject = require('../lang/isObject'),
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shimKeys = require('../internal/shimKeys');
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/* Native method references for those with the same name as other `lodash` methods. */
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var nativeKeys = getNative(Object, 'keys');
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/**
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* Creates an array of the own enumerable property names of `object`.
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*
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* **Note:** Non-object values are coerced to objects. See the
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* [ES spec](http://ecma-international.org/ecma-262/6.0/#sec-object.keys)
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* for more details.
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*
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* @static
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* @memberOf _
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* @category Object
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* @param {Object} object The object to query.
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* @returns {Array} Returns the array of property names.
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* @example
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*
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* function Foo() {
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* this.a = 1;
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* this.b = 2;
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* }
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*
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* Foo.prototype.c = 3;
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*
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* _.keys(new Foo);
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* // => ['a', 'b'] (iteration order is not guaranteed)
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*
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* _.keys('hi');
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* // => ['0', '1']
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*/
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var keys = !nativeKeys ? shimKeys : function(object) {
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var Ctor = object == null ? undefined : object.constructor;
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if ((typeof Ctor == 'function' && Ctor.prototype === object) ||
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(typeof object != 'function' && isArrayLike(object))) {
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return shimKeys(object);
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}
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return isObject(object) ? nativeKeys(object) : [];
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};
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module.exports = keys;
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