add book.js

node_modules/lodash/function/defer.js

@@ -0,0 +1,25 @@
+var baseDelay = require('../internal/baseDelay'),
+    restParam = require('./restParam');
+
+/**
+ * Defers invoking the `func` until the current call stack has cleared. Any
+ * additional arguments are provided to `func` when it's invoked.
+ *
+ * @static
+ * @memberOf _
+ * @category Function
+ * @param {Function} func The function to defer.
+ * @param {...*} [args] The arguments to invoke the function with.
+ * @returns {number} Returns the timer id.
+ * @example
+ *
+ * _.defer(function(text) {
+ *   console.log(text);
+ * }, 'deferred');
+ * // logs 'deferred' after one or more milliseconds
+ */
+var defer = restParam(function(func, args) {
+  return baseDelay(func, 1, args);
+});
+
+module.exports = defer;