/** * lodash 4.1.1 (Custom Build) * Build: `lodash modularize exports="npm" -o ./` * Copyright 2012-2016 The Dojo Foundation * Based on Underscore.js 1.8.3 * Copyright 2009-2016 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors * Available under MIT license */ var rest = require('lodash.rest'); /** `Object#toString` result references. */ var errorTag = '[object Error]'; /** * A faster alternative to `Function#apply`, this function invokes `func` * with the `this` binding of `thisArg` and the arguments of `args`. * * @private * @param {Function} func The function to invoke. * @param {*} thisArg The `this` binding of `func`. * @param {Array} args The arguments to invoke `func` with. * @returns {*} Returns the result of `func`. */ function apply(func, thisArg, args) { var length = args.length; switch (length) { case 0: return func.call(thisArg); case 1: return func.call(thisArg, args[0]); case 2: return func.call(thisArg, args[0], args[1]); case 3: return func.call(thisArg, args[0], args[1], args[2]); } return func.apply(thisArg, args); } /** Used for built-in method references. */ var objectProto = Object.prototype; /** * Used to resolve the * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring) * of values. */ var objectToString = objectProto.toString; /** * Checks if `value` is an `Error`, `EvalError`, `RangeError`, `ReferenceError`, * `SyntaxError`, `TypeError`, or `URIError` object. * * @static * @memberOf _ * @since 3.0.0 * @category Lang * @param {*} value The value to check. * @returns {boolean} Returns `true` if `value` is an error object, * else `false`. * @example * * _.isError(new Error); * // => true * * _.isError(Error); * // => false */ function isError(value) { if (!isObjectLike(value)) { return false; } return (objectToString.call(value) == errorTag) || (typeof value.message == 'string' && typeof value.name == 'string'); } /** * Checks if `value` is object-like. A value is object-like if it's not `null` * and has a `typeof` result of "object". * * @static * @memberOf _ * @since 4.0.0 * @category Lang * @param {*} value The value to check. * @returns {boolean} Returns `true` if `value` is object-like, else `false`. * @example * * _.isObjectLike({}); * // => true * * _.isObjectLike([1, 2, 3]); * // => true * * _.isObjectLike(_.noop); * // => false * * _.isObjectLike(null); * // => false */ function isObjectLike(value) { return !!value && typeof value == 'object'; } /** * 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 _ * @since 3.0.0 * @category Util * @param {Function} func The function to attempt. * @param {...*} [args] The arguments to invoke `func` with. * @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 = rest(function(func, args) { try { return apply(func, undefined, args); } catch (e) { return isError(e) ? e : new Error(e); } }); module.exports = attempt;