JSTests/es6/destructuring_chained_object_destructuring.js

function test() {

var a,b,c,d;
({a,b} = {c,d} = {a:1,b:2,c:3,d:4});
return a === 1 && b === 2 && c === 3 && d === 4;
      
}

if (!test())
    throw new Error("Test failed");