added unit testing, and started implementing unit tests...phew

node_modules/map-visit/index.js

@@ -0,0 +1,37 @@
+'use strict';
+
+var util = require('util');
+var visit = require('object-visit');
+
+/**
+ * Map `visit` over an array of objects.
+ *
+ * @param  {Object} `collection` The context in which to invoke `method`
+ * @param  {String} `method` Name of the method to call on `collection`
+ * @param  {Object} `arr` Array of objects.
+ */
+
+module.exports = function mapVisit(collection, method, val) {
+  if (isObject(val)) {
+    return visit.apply(null, arguments);
+  }
+
+  if (!Array.isArray(val)) {
+    throw new TypeError('expected an array: ' + util.inspect(val));
+  }
+
+  var args = [].slice.call(arguments, 3);
+
+  for (var i = 0; i < val.length; i++) {
+    var ele = val[i];
+    if (isObject(ele)) {
+      visit.apply(null, [collection, method, ele].concat(args));
+    } else {
+      collection[method].apply(collection, [ele].concat(args));
+    }
+  }
+};
+
+function isObject(val) {
+  return val && (typeof val === 'function' || (!Array.isArray(val) && typeof val === 'object'));
+}