Discard binding

Baseline

Scrap useless values when destructuring.

Type	TC39	CoreJS	Babel	Civet	JS+
Syntax	✅ Stage 2 View		✅ View	❌	✅ via Babel

JS+ TypeScript

const [void, x, void, y, void, z] = [0, 1, 2, 3, 4, 5];

const { z: void, ...obj1 } = { x: 1, y: 2, z: 3 };
console.log(obj1); // { x: 1, y: 2 }

const [_, x, __, y, ___, z] = [0, 1, 2, 3, 4, 5];

let obj2;
({ z: _, ...obj2 } = { x: 1, y: 2, z: 3 });
console.log(obj2); // { x: 1, y: 2 }