add book.js

node_modules/lodash/utility/attempt.js

@@ -0,0 +1,32 @@
+var isError = require('../lang/isError'),
+    restParam = require('../function/restParam');
+
+/**
+ * Attempts to invoke `func`, returning either the result or the caught error
+ * object. Any additional arguments are provided to `func` when it's invoked.
+ *
+ * @static
+ * @memberOf _
+ * @category Utility
+ * @param {Function} func The function to attempt.
+ * @returns {*} Returns the `func` result or error object.
+ * @example
+ *
+ * // avoid throwing errors for invalid selectors
+ * var elements = _.attempt(function(selector) {
+ *   return document.querySelectorAll(selector);
+ * }, '>_>');
+ *
+ * if (_.isError(elements)) {
+ *   elements = [];
+ * }
+ */
+var attempt = restParam(function(func, args) {
+  try {
+    return func.apply(undefined, args);
+  } catch(e) {
+    return isError(e) ? e : new Error(e);
+  }
+});
+
+module.exports = attempt;