// @strict: true
// @target: esnext, es2021, es2020, es2015
declare let a: string | undefined
declare let b: string | undefined
declare let c: string | undefined

declare let d: number | undefined
declare let e: number | undefined
declare let f: number | undefined

declare let g: 0 | 1 | 42
declare let h: 0 | 1 | 42
declare let i: 0 | 1 | 42


a &&= "foo"
b ||= "foo"
c ??= "foo"


d &&= 42
e ||= 42
f ??= 42

g &&= 42
h ||= 42
i ??= 42