time-to-botec

Benchmark sampling in different programming languages
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assign.js (1566B)

      1 var assignValue = require('./_assignValue'),
      2     copyObject = require('./_copyObject'),
      3     createAssigner = require('./_createAssigner'),
      4     isArrayLike = require('./isArrayLike'),
      5     isPrototype = require('./_isPrototype'),
      6     keys = require('./keys');
      7 
      8 /** Used for built-in method references. */
      9 var objectProto = Object.prototype;
     10 
     11 /** Used to check objects for own properties. */
     12 var hasOwnProperty = objectProto.hasOwnProperty;
     13 
     14 /**
     15  * Assigns own enumerable string keyed properties of source objects to the
     16  * destination object. Source objects are applied from left to right.
     17  * Subsequent sources overwrite property assignments of previous sources.
     18  *
     19  * **Note:** This method mutates `object` and is loosely based on
     20  * [`Object.assign`](https://mdn.io/Object/assign).
     21  *
     22  * @static
     23  * @memberOf _
     24  * @since 0.10.0
     25  * @category Object
     26  * @param {Object} object The destination object.
     27  * @param {...Object} [sources] The source objects.
     28  * @returns {Object} Returns `object`.
     29  * @see _.assignIn
     30  * @example
     31  *
     32  * function Foo() {
     33  *   this.a = 1;
     34  * }
     35  *
     36  * function Bar() {
     37  *   this.c = 3;
     38  * }
     39  *
     40  * Foo.prototype.b = 2;
     41  * Bar.prototype.d = 4;
     42  *
     43  * _.assign({ 'a': 0 }, new Foo, new Bar);
     44  * // => { 'a': 1, 'c': 3 }
     45  */
     46 var assign = createAssigner(function(object, source) {
     47   if (isPrototype(source) || isArrayLike(source)) {
     48     copyObject(source, keys(source), object);
     49     return;
     50   }
     51   for (var key in source) {
     52     if (hasOwnProperty.call(source, key)) {
     53       assignValue(object, key, source[key]);
     54     }
     55   }
     56 });
     57 
     58 module.exports = assign;