/** * @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 evil = require( '@stdlib/utils/eval' ); // MAIN // /** * Tests for native `Proxy` support. * * @returns {boolean} boolean indicating if an environment has native `Proxy` support * * @example * var bool = hasProxySupport(); * // returns */ function hasProxySupport() { var bool; try { evil( '"use strict"; var handler = { "get": function get( t, n ) { return t[ n ] * 100; } }; var target = { "beep": 3.14 }; var p = new Proxy( target, handler ); var x = p.beep; if ( x !== 314 ) { throw new Error( "native Proxy is not supported." ); }' ); bool = true; } catch ( err ) { // eslint-disable-line no-unused-vars bool = false; } return bool; } // EXPORTS // module.exports = hasProxySupport;