using a = b
export var ac1 = [a, c], { x: [x1] } = foo
export let a1 = a, { y: [y1] } = foo
export const c1 = c, { z: [z1] } = foo
var ac2 = [a, c], { x: [x2] } = foo
let a2 = a, { y: [y2] } = foo
const c2 = c, { z: [z2] } = foo
using c = d