wangdu_wechat/node_modules/lodash/defaults.js

var apply = require('./_apply'),
    assignInWith = require('./assignInWith'),
    baseRest = require('./_baseRest'),
    customDefaultsAssignIn = require('./_customDefaultsAssignIn');

/**
 * Assigns own and inherited enumerable string keyed properties of source
 * objects to the destination object for all destination properties that
 * resolve to `undefined`. Source objects are applied from left to right.
 * Once a property is set, additional values of the same property are ignored.
 *
 * **Note:** This method mutates `object`.
 *
 * @static
 * @since 0.1.0
 * @memberOf _
 * @category Object
 * @param {Object} object The destination object.
 * @param {...Object} [sources] The source objects.
 * @returns {Object} Returns `object`.
 * @see _.defaultsDeep
 * @example
 *
 * _.defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
 * // => { 'a': 1, 'b': 2 }
 */
var defaults = baseRest(function(args) {
  args.push(undefined, customDefaultsAssignIn);
  return apply(assignInWith, undefined, args);
});

module.exports = defaults;