Adding support for all and spread

lib/axios.js

@@ -6,6 +6,7 @@ var parseHeaders = require('./parseHeaders');
 var transformData = require('./transformData');
 var urlIsSameOrigin = require('./urlIsSameOrigin');
 var utils = require('./utils');
+var spread = require('./spread');
 
 var axios = module.exports = function axios(config) {
   config = utils.merge({
@@ -128,6 +129,10 @@ var axios = module.exports = function axios(config) {
 // Expose defaults
 axios.defaults = defaults;
 
+// Expose all/spread
+axios.all = Promise.all;
+axios.spread = spread;
+
 // Provide aliases for supported request methods
 createShortMethods('delete', 'get', 'head');
 createShortMethodsWithData('post', 'put', 'patch');

lib/spread.js

@@ -0,0 +1,25 @@
+/**
+ * Syntactic sugar for invoking a function and expanding an array for arguments.
+ *
+ * Common use case would be to use `Function.prototype.apply`.
+ *
+ *  ```js
+ *  function f(x, y, z) {}
+ *  var args = [1, 2, 3];
+ *  f.apply(null, args);
+ *  ```
+ *
+ * With `spread` this example can be re-written.
+ *
+ *  ```js
+ *  spread(function(x, y, z) {})([1, 2, 3]);
+ *  ```
+ *
+ * @param {Function} callback
+ * @returns {Function}
+ */
+module.exports = function spread(callback) {
+  return function (arr) {
+    callback.apply(null, arr);
+  };
+};