add book.js

node_modules/lodash/internal/wrapperClone.js

@@ -0,0 +1,18 @@
+var LazyWrapper = require('./LazyWrapper'),
+    LodashWrapper = require('./LodashWrapper'),
+    arrayCopy = require('./arrayCopy');
+
+/**
+ * Creates a clone of `wrapper`.
+ *
+ * @private
+ * @param {Object} wrapper The wrapper to clone.
+ * @returns {Object} Returns the cloned wrapper.
+ */
+function wrapperClone(wrapper) {
+  return wrapper instanceof LazyWrapper
+    ? wrapper.clone()
+    : new LodashWrapper(wrapper.__wrapped__, wrapper.__chain__, arrayCopy(wrapper.__actions__));
+}
+
+module.exports = wrapperClone;