add book.js

node_modules/lodash/internal/createForEach.js

@@ -0,0 +1,20 @@
+var bindCallback = require('./bindCallback'),
+    isArray = require('../lang/isArray');
+
+/**
+ * Creates a function for `_.forEach` or `_.forEachRight`.
+ *
+ * @private
+ * @param {Function} arrayFunc The function to iterate over an array.
+ * @param {Function} eachFunc The function to iterate over a collection.
+ * @returns {Function} Returns the new each function.
+ */
+function createForEach(arrayFunc, eachFunc) {
+  return function(collection, iteratee, thisArg) {
+    return (typeof iteratee == 'function' && thisArg === undefined && isArray(collection))
+      ? arrayFunc(collection, iteratee)
+      : eachFunc(collection, bindCallback(iteratee, thisArg, 3));
+  };
+}
+
+module.exports = createForEach;