test262/harness/proxyTrapsHelper.js

function allowProxyTraps(overrides) {
    function throwTest262Error(msg) {
        return function () { throw new Test262Error(msg); };
    }
    if (!overrides) { overrides = {}; }
    return {
        getPrototypeOf: overrides.getPrototypeOf || throwTest262Error('[[GetPrototypeOf]] trap called'),
        setPrototypeOf: overrides.setPrototypeOf || throwTest262Error('[[SetPrototypeOf]] trap called'),
        isExtensible: overrides.isExtensible || throwTest262Error('[[IsExtensible]] trap called'),
        preventExtensions: overrides.preventExtensions || throwTest262Error('[[PreventExtensions]] trap called'),
        getOwnPropertyDescriptor: overrides.getOwnPropertyDescriptor || throwTest262Error('[[GetOwnProperty]] trap called'),
        has: overrides.has || throwTest262Error('[[HasProperty]] trap called'),
        get: overrides.get || throwTest262Error('[[Get]] trap called'),
        set: overrides.set || throwTest262Error('[[Set]] trap called'),
        deleteProperty: overrides.deleteProperty || throwTest262Error('[[Delete]] trap called'),
        defineProperty: overrides.defineProperty || throwTest262Error('[[DefineOwnProperty]] trap called'),
        enumerate: throwTest262Error('[[Enumerate]] trap called: this trap has been removed'),
        ownKeys: overrides.ownKeys || throwTest262Error('[[OwnPropertyKeys]] trap called'),
        apply: overrides.apply || throwTest262Error('[[Call]] trap called'),
        construct: overrides.construct || throwTest262Error('[[Construct]] trap called')
    };
}