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=== tests/cases/conformance/types/mapped/mappedTypeConstraints.ts ===
function f0<T extends { a: string, b: string }>(obj: Pick<T, Extract<keyof T, 'b'>>) {
>f0 : Symbol(f0, Decl(mappedTypeConstraints.ts, 0, 0))
>T : Symbol(T, Decl(mappedTypeConstraints.ts, 0, 12))
>a : Symbol(a, Decl(mappedTypeConstraints.ts, 0, 23))
>b : Symbol(b, Decl(mappedTypeConstraints.ts, 0, 34))
>obj : Symbol(obj, Decl(mappedTypeConstraints.ts, 0, 48))
>Pick : Symbol(Pick, Decl(lib.es5.d.ts, --, --))
>T : Symbol(T, Decl(mappedTypeConstraints.ts, 0, 12))
>Extract : Symbol(Extract, Decl(lib.es5.d.ts, --, --))
>T : Symbol(T, Decl(mappedTypeConstraints.ts, 0, 12))
obj.b;
>obj.b : Symbol(b, Decl(mappedTypeConstraints.ts, 0, 34))
>obj : Symbol(obj, Decl(mappedTypeConstraints.ts, 0, 48))
>b : Symbol(b, Decl(mappedTypeConstraints.ts, 0, 34))
}
function f1<T extends { a: string, b: string }>(obj: Pick<T, Exclude<keyof T, 'a'>>) {
>f1 : Symbol(f1, Decl(mappedTypeConstraints.ts, 2, 1))
>T : Symbol(T, Decl(mappedTypeConstraints.ts, 4, 12))
>a : Symbol(a, Decl(mappedTypeConstraints.ts, 4, 23))
>b : Symbol(b, Decl(mappedTypeConstraints.ts, 4, 34))
>obj : Symbol(obj, Decl(mappedTypeConstraints.ts, 4, 48))
>Pick : Symbol(Pick, Decl(lib.es5.d.ts, --, --))
>T : Symbol(T, Decl(mappedTypeConstraints.ts, 4, 12))
>Exclude : Symbol(Exclude, Decl(lib.es5.d.ts, --, --))
>T : Symbol(T, Decl(mappedTypeConstraints.ts, 4, 12))
obj.b;
>obj.b : Symbol(b, Decl(mappedTypeConstraints.ts, 4, 34))
>obj : Symbol(obj, Decl(mappedTypeConstraints.ts, 4, 48))
>b : Symbol(b, Decl(mappedTypeConstraints.ts, 4, 34))
}
function f2<T extends { a: string, b: string }, U extends { b: string, c: string }>(obj: Pick<T | U, keyof (T | U)>) {
>f2 : Symbol(f2, Decl(mappedTypeConstraints.ts, 6, 1))
>T : Symbol(T, Decl(mappedTypeConstraints.ts, 8, 12))
>a : Symbol(a, Decl(mappedTypeConstraints.ts, 8, 23))
>b : Symbol(b, Decl(mappedTypeConstraints.ts, 8, 34))
>U : Symbol(U, Decl(mappedTypeConstraints.ts, 8, 47))
>b : Symbol(b, Decl(mappedTypeConstraints.ts, 8, 59))
>c : Symbol(c, Decl(mappedTypeConstraints.ts, 8, 70))
>obj : Symbol(obj, Decl(mappedTypeConstraints.ts, 8, 84))
>Pick : Symbol(Pick, Decl(lib.es5.d.ts, --, --))
>T : Symbol(T, Decl(mappedTypeConstraints.ts, 8, 12))
>U : Symbol(U, Decl(mappedTypeConstraints.ts, 8, 47))
>T : Symbol(T, Decl(mappedTypeConstraints.ts, 8, 12))
>U : Symbol(U, Decl(mappedTypeConstraints.ts, 8, 47))
obj.b;
>obj.b : Symbol(b, Decl(mappedTypeConstraints.ts, 8, 34), Decl(mappedTypeConstraints.ts, 8, 59))
>obj : Symbol(obj, Decl(mappedTypeConstraints.ts, 8, 84))
>b : Symbol(b, Decl(mappedTypeConstraints.ts, 8, 34), Decl(mappedTypeConstraints.ts, 8, 59))
}
function f3<T extends { a: string, b: string }, U extends { b: string, c: string }>(obj: Pick<T & U, keyof (T & U)>) {
>f3 : Symbol(f3, Decl(mappedTypeConstraints.ts, 10, 1))
>T : Symbol(T, Decl(mappedTypeConstraints.ts, 12, 12))
>a : Symbol(a, Decl(mappedTypeConstraints.ts, 12, 23))
>b : Symbol(b, Decl(mappedTypeConstraints.ts, 12, 34))
>U : Symbol(U, Decl(mappedTypeConstraints.ts, 12, 47))
>b : Symbol(b, Decl(mappedTypeConstraints.ts, 12, 59))
>c : Symbol(c, Decl(mappedTypeConstraints.ts, 12, 70))
>obj : Symbol(obj, Decl(mappedTypeConstraints.ts, 12, 84))
>Pick : Symbol(Pick, Decl(lib.es5.d.ts, --, --))
>T : Symbol(T, Decl(mappedTypeConstraints.ts, 12, 12))
>U : Symbol(U, Decl(mappedTypeConstraints.ts, 12, 47))
>T : Symbol(T, Decl(mappedTypeConstraints.ts, 12, 12))
>U : Symbol(U, Decl(mappedTypeConstraints.ts, 12, 47))
obj.a;
>obj.a : Symbol(a, Decl(mappedTypeConstraints.ts, 12, 23))
>obj : Symbol(obj, Decl(mappedTypeConstraints.ts, 12, 84))
>a : Symbol(a, Decl(mappedTypeConstraints.ts, 12, 23))
obj.b;
>obj.b : Symbol(b, Decl(mappedTypeConstraints.ts, 12, 34), Decl(mappedTypeConstraints.ts, 12, 59))
>obj : Symbol(obj, Decl(mappedTypeConstraints.ts, 12, 84))
>b : Symbol(b, Decl(mappedTypeConstraints.ts, 12, 34), Decl(mappedTypeConstraints.ts, 12, 59))
obj.c;
>obj.c : Symbol(c, Decl(mappedTypeConstraints.ts, 12, 70))
>obj : Symbol(obj, Decl(mappedTypeConstraints.ts, 12, 84))
>c : Symbol(c, Decl(mappedTypeConstraints.ts, 12, 70))
}
function f4<T extends { a: string, b: string }>(obj: Record<Exclude<keyof T, 'b'> | 'c', string>) {
>f4 : Symbol(f4, Decl(mappedTypeConstraints.ts, 16, 1))
>T : Symbol(T, Decl(mappedTypeConstraints.ts, 18, 12))
>a : Symbol(a, Decl(mappedTypeConstraints.ts, 18, 23))
>b : Symbol(b, Decl(mappedTypeConstraints.ts, 18, 34))
>obj : Symbol(obj, Decl(mappedTypeConstraints.ts, 18, 48))
>Record : Symbol(Record, Decl(lib.es5.d.ts, --, --))
>Exclude : Symbol(Exclude, Decl(lib.es5.d.ts, --, --))
>T : Symbol(T, Decl(mappedTypeConstraints.ts, 18, 12))
obj.a;
>obj.a : Symbol(a)
>obj : Symbol(obj, Decl(mappedTypeConstraints.ts, 18, 48))
>a : Symbol(a)
obj.c;
>obj.c : Symbol(c)
>obj : Symbol(obj, Decl(mappedTypeConstraints.ts, 18, 48))
>c : Symbol(c)
}
// Repro from #28821
type TargetProps = {
>TargetProps : Symbol(TargetProps, Decl(mappedTypeConstraints.ts, 21, 1))
foo: string,
>foo : Symbol(foo, Decl(mappedTypeConstraints.ts, 25, 20))
bar: string
>bar : Symbol(bar, Decl(mappedTypeConstraints.ts, 26, 16))
};
const modifier = <T extends TargetProps>(targetProps: T) => {
>modifier : Symbol(modifier, Decl(mappedTypeConstraints.ts, 30, 5))
>T : Symbol(T, Decl(mappedTypeConstraints.ts, 30, 18))
>TargetProps : Symbol(TargetProps, Decl(mappedTypeConstraints.ts, 21, 1))
>targetProps : Symbol(targetProps, Decl(mappedTypeConstraints.ts, 30, 41))
>T : Symbol(T, Decl(mappedTypeConstraints.ts, 30, 18))
let {bar, ...rest} = targetProps;
>bar : Symbol(bar, Decl(mappedTypeConstraints.ts, 31, 9))
>rest : Symbol(rest, Decl(mappedTypeConstraints.ts, 31, 13))
>targetProps : Symbol(targetProps, Decl(mappedTypeConstraints.ts, 30, 41))
rest.foo;
>rest.foo : Symbol(foo, Decl(mappedTypeConstraints.ts, 25, 20))
>rest : Symbol(rest, Decl(mappedTypeConstraints.ts, 31, 13))
>foo : Symbol(foo, Decl(mappedTypeConstraints.ts, 25, 20))
};
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