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node_modules/lodash.defaults/index.js

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+/**
+ * lodash 3.1.2 (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 assign = require('lodash.assign'),
+    restParam = require('lodash.restparam');
+
+/**
+ * Used by `_.defaults` to customize its `_.assign` use.
+ *
+ * @private
+ * @param {*} objectValue The destination object property value.
+ * @param {*} sourceValue The source object property value.
+ * @returns {*} Returns the value to assign to the destination object.
+ */
+function assignDefaults(objectValue, sourceValue) {
+  return objectValue === undefined ? sourceValue : objectValue;
+}
+
+/**
+ * Creates a `_.defaults` or `_.defaultsDeep` function.
+ *
+ * @private
+ * @param {Function} assigner The function to assign values.
+ * @param {Function} customizer The function to customize assigned values.
+ * @returns {Function} Returns the new defaults function.
+ */
+function createDefaults(assigner, customizer) {
+  return restParam(function(args) {
+    var object = args[0];
+    if (object == null) {
+      return object;
+    }
+    args.push(customizer);
+    return assigner.apply(undefined, args);
+  });
+}
+
+/**
+ * Assigns own enumerable properties of source object(s) to the destination
+ * object for all destination properties that resolve to `undefined`. Once a
+ * property is set, additional values of the same property are ignored.
+ *
+ * **Note:** This method mutates `object`.
+ *
+ * @static
+ * @memberOf _
+ * @category Object
+ * @param {Object} object The destination object.
+ * @param {...Object} [sources] The source objects.
+ * @returns {Object} Returns `object`.
+ * @example
+ *
+ * _.defaults({ 'user': 'barney' }, { 'age': 36 }, { 'user': 'fred' });
+ * // => { 'user': 'barney', 'age': 36 }
+ */
+var defaults = createDefaults(assign, assignDefaults);
+
+module.exports = defaults;