/** * @license Apache-2.0 * * Copyright (c) 2018 The Stdlib Authors. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ 'use strict'; // MODULES // var getPrototypeOf = require( '@stdlib/utils/get-prototype-of' ); var typeOf = require( '@stdlib/utils/type-of' ); var isError = require( './../../is-error' ); // MAIN // /** * Tests if a value is a `RangeError` object. * * @param {*} value - value to test * @returns {boolean} boolean indicating whether a value is a `RangeError` object * * @example * var bool = isRangeError( new RangeError( 'beep' ) ); * // returns true * * @example * var bool = isRangeError( {} ); * // returns false */ function isRangeError( value ) { if ( typeof value !== 'object' || value === null ) { return false; } // Check for `RangeError` objects from the same realm (same Node.js `vm` or same `Window` object)... if ( value instanceof RangeError ) { return true; } // All `RangeError` objects are `Error` objects... if ( isError( value ) ) { // Walk the prototype tree until we find the desired constructor... while ( value ) { if ( typeOf( value ) === 'rangeerror' ) { return true; } value = getPrototypeOf( value ); } } return false; } // EXPORTS // module.exports = isRangeError;