more work

node_modules/lodash/collection/invoke.js

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+var baseEach = require('../internal/baseEach'),
+    getLength = require('../internal/getLength'),
+    invokePath = require('../internal/invokePath'),
+    isKey = require('../internal/isKey'),
+    isLength = require('../internal/isLength'),
+    restParam = require('../function/restParam');
+
+/**
+ * Invokes the method at `path` on each element in `collection`, returning
+ * an array of the results of each invoked method. Any additional arguments
+ * are provided to each invoked method. If `methodName` is a function it is
+ * invoked for, and `this` bound to, each element in `collection`.
+ *
+ * @static
+ * @memberOf _
+ * @category Collection
+ * @param {Array|Object|string} collection The collection to iterate over.
+ * @param {Array|Function|string} path The path of the method to invoke or
+ *  the function invoked per iteration.
+ * @param {...*} [args] The arguments to invoke the method with.
+ * @returns {Array} Returns the array of results.
+ * @example
+ *
+ * _.invoke([[5, 1, 7], [3, 2, 1]], 'sort');
+ * // => [[1, 5, 7], [1, 2, 3]]
+ *
+ * _.invoke([123, 456], String.prototype.split, '');
+ * // => [['1', '2', '3'], ['4', '5', '6']]
+ */
+var invoke = restParam(function(collection, path, args) {
+  var index = -1,
+      isFunc = typeof path == 'function',
+      isProp = isKey(path),
+      length = getLength(collection),
+      result = isLength(length) ? Array(length) : [];
+
+  baseEach(collection, function(value) {
+    var func = isFunc ? path : (isProp && value != null && value[path]);
+    result[++index] = func ? func.apply(value, args) : invokePath(value, path, args);
+  });
+  return result;
+});
+
+module.exports = invoke;