Source code
Revision control
Copy as Markdown
Other Tools
/* 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
// Destructuring binding patterns with var.
var {a: yield} = {a: "yield-with-name"};
assertEq(yield, "yield-with-name");
var {yield} = {yield: "yield-with-shorthand"};
assertEq(yield, "yield-with-shorthand");
var {yield = 0} = {yield: "yield-with-coverinitname"};
assertEq(yield, "yield-with-coverinitname");
assertThrowsInstanceOf(() => eval(`
"use strict";
var {a: yield} = {};
`), SyntaxError);
assertThrowsInstanceOf(() => eval(`
"use strict";
var {yield} = {};
`), SyntaxError);
assertThrowsInstanceOf(() => eval(`
"use strict";
var {yield = 0} = {};
`), SyntaxError);
// Destructuring binding patterns with let.
{
let {a: yield} = {a: "yield-with-name"};
assertEq(yield, "yield-with-name");
}
{
let {yield} = {yield: "yield-with-shorthand"};
assertEq(yield, "yield-with-shorthand");
}
{
let {yield = 0} = {yield: "yield-with-coverinitname"};
assertEq(yield, "yield-with-coverinitname");
}
assertThrowsInstanceOf(() => eval(`
"use strict";
let {a: yield} = {};
`), SyntaxError);
assertThrowsInstanceOf(() => eval(`
"use strict";
let {yield} = {};
`), SyntaxError);
assertThrowsInstanceOf(() => eval(`
"use strict";
let {yield = 0} = {};
`), SyntaxError);
// Destructuring binding patterns with const.
{
const {a: yield} = {a: "yield-with-name"};
assertEq(yield, "yield-with-name");
}
{
const {yield} = {yield: "yield-with-shorthand"};
assertEq(yield, "yield-with-shorthand");
}
{
const {yield = 0} = {yield: "yield-with-coverinitname"};
assertEq(yield, "yield-with-coverinitname");
}
assertThrowsInstanceOf(() => eval(`
"use strict";
const {a: yield} = {};
`), SyntaxError);
assertThrowsInstanceOf(() => eval(`
"use strict";
const {yield} = {};
`), SyntaxError);
assertThrowsInstanceOf(() => eval(`
"use strict";
const {yield = 0} = {};
`), SyntaxError);
// Destructuring assignment pattern.
({a: yield} = {a: "yield-with-name"});
assertEq(yield, "yield-with-name");
({yield} = {yield: "yield-with-shorthand"});
assertEq(yield, "yield-with-shorthand");
({yield = 0} = {yield: "yield-with-coverinitname"});
assertEq(yield, "yield-with-coverinitname");
assertThrowsInstanceOf(() => eval(`
"use strict";
({a: yield} = {});
`), SyntaxError);
assertThrowsInstanceOf(() => eval(`
"use strict";
({yield} = {});
`), SyntaxError);
assertThrowsInstanceOf(() => eval(`
"use strict";
({yield = 0} = {});
`), SyntaxError);
if (typeof reportCompare === "function")
reportCompare(0, 0, "ok");