Files
lodash/lodash.forown/index.js
2016-08-12 13:45:38 -07:00

72 lines
2.2 KiB
JavaScript

/**
* lodash 3.0.2 (Custom Build) <https://lodash.com/>
* Build: `lodash modern modularize exports="npm" -o ./`
* Copyright 2012-2015 The Dojo Foundation <http://dojofoundation.org/>
* Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
* Copyright 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
* Available under MIT license <https://lodash.com/license>
*/
var baseFor = require('lodash._basefor'),
bindCallback = require('lodash._bindcallback'),
keys = require('lodash.keys');
/**
* The base implementation of `_.forOwn` without support for callback
* shorthands and `this` binding.
*
* @private
* @param {Object} object The object to iterate over.
* @param {Function} iteratee The function invoked per iteration.
* @returns {Object} Returns `object`.
*/
function baseForOwn(object, iteratee) {
return baseFor(object, iteratee, keys);
}
/**
* Creates a function for `_.forOwn` or `_.forOwnRight`.
*
* @private
* @param {Function} objectFunc The function to iterate over an object.
* @returns {Function} Returns the new each function.
*/
function createForOwn(objectFunc) {
return function(object, iteratee, thisArg) {
if (typeof iteratee != 'function' || thisArg !== undefined) {
iteratee = bindCallback(iteratee, thisArg, 3);
}
return objectFunc(object, iteratee);
};
}
/**
* Iterates over own enumerable properties of an object invoking `iteratee`
* for each property. The `iteratee` is bound to `thisArg` and invoked with
* three arguments: (value, key, object). Iteratee functions may exit iteration
* early by explicitly returning `false`.
*
* @static
* @memberOf _
* @category Object
* @param {Object} object The object to iterate over.
* @param {Function} [iteratee=_.identity] The function invoked per iteration.
* @param {*} [thisArg] The `this` binding of `iteratee`.
* @returns {Object} Returns `object`.
* @example
*
* function Foo() {
* this.a = 1;
* this.b = 2;
* }
*
* Foo.prototype.c = 3;
*
* _.forOwn(new Foo, function(value, key) {
* console.log(key);
* });
* // => logs 'a' and 'b' (iteration order is not guaranteed)
*/
var forOwn = createForOwn(baseForOwn);
module.exports = forOwn;