duplicate-__proto__.js

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/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

// Destructuring assignment.

var a, b;

({__proto__: a, __proto__: b} = {});

assertEq(a, Object.prototype);

assertEq(b, Object.prototype);

// Destructuring binding with "var".

var {__proto__: a, __proto__: b} = {};

assertEq(a, Object.prototype);

assertEq(b, Object.prototype);

// Destructuring binding with "let".

    let {__proto__: a, __proto__: b} = {};

    assertEq(a, Object.prototype);

    assertEq(b, Object.prototype);

// Destructuring binding with "const".

    const {__proto__: a, __proto__: b} = {};

    assertEq(a, Object.prototype);

    assertEq(b, Object.prototype);

// Function parameters.

function f1({__proto__: a, __proto__: b}) {

    assertEq(a, Object.prototype);

    assertEq(b, Object.prototype);

f1({});

// Arrow function parameters.

var f2 = ({__proto__: a, __proto__: b}) => {

    assertEq(a, Object.prototype);

    assertEq(b, Object.prototype);

};

f2({});

// Arrow function parameters with defaults (initially parsed as destructuring assignment).

var f3 = ({__proto__: a, __proto__: b} = {}) => {

    assertEq(a, Object.prototype);

    assertEq(b, Object.prototype);

};

f3({});

if (typeof reportCompare === "function")

    reportCompare(0, 0);