=== tests/cases/conformance/expressions/typeAssertions/constAssertions.ts ===
let v1 = 'abc' as const;
>v1 : Symbol(v1, Decl(constAssertions.ts, 0, 3))
>const : Symbol(const)

let v2 = `abc` as const;
>v2 : Symbol(v2, Decl(constAssertions.ts, 1, 3))
>const : Symbol(const)

let v3 = 10 as const;
>v3 : Symbol(v3, Decl(constAssertions.ts, 2, 3))
>const : Symbol(const)

let v4 = -10 as const;
>v4 : Symbol(v4, Decl(constAssertions.ts, 3, 3))
>const : Symbol(const)

let v5 = +10 as const;
>v5 : Symbol(v5, Decl(constAssertions.ts, 4, 3))
>const : Symbol(const)

let v6 = 10n as const;
>v6 : Symbol(v6, Decl(constAssertions.ts, 5, 3))
>const : Symbol(const)

let v7 = -10n as const;
>v7 : Symbol(v7, Decl(constAssertions.ts, 6, 3))
>const : Symbol(const)

let v8 = true as const;
>v8 : Symbol(v8, Decl(constAssertions.ts, 7, 3))
>const : Symbol(const)

let v9 = false as const;
>v9 : Symbol(v9, Decl(constAssertions.ts, 8, 3))
>const : Symbol(const)

let c1 = 'abc' as const;
>c1 : Symbol(c1, Decl(constAssertions.ts, 10, 3))
>const : Symbol(const)

let c2 = `abc` as const;
>c2 : Symbol(c2, Decl(constAssertions.ts, 11, 3))
>const : Symbol(const)

let c3 = 10 as const;
>c3 : Symbol(c3, Decl(constAssertions.ts, 12, 3))
>const : Symbol(const)

let c4 = -10 as const;
>c4 : Symbol(c4, Decl(constAssertions.ts, 13, 3))
>const : Symbol(const)

let c5 = +10 as const;
>c5 : Symbol(c5, Decl(constAssertions.ts, 14, 3))
>const : Symbol(const)

let c6 = 10n as const;
>c6 : Symbol(c6, Decl(constAssertions.ts, 15, 3))
>const : Symbol(const)

let c7 = -10n as const;
>c7 : Symbol(c7, Decl(constAssertions.ts, 16, 3))
>const : Symbol(const)

let c8 = true as const;
>c8 : Symbol(c8, Decl(constAssertions.ts, 17, 3))
>const : Symbol(const)

let c9 = false as const;
>c9 : Symbol(c9, Decl(constAssertions.ts, 18, 3))
>const : Symbol(const)

let vv1 = v1;
>vv1 : Symbol(vv1, Decl(constAssertions.ts, 20, 3))
>v1 : Symbol(v1, Decl(constAssertions.ts, 0, 3))

let vc1 = c1;
>vc1 : Symbol(vc1, Decl(constAssertions.ts, 21, 3))
>c1 : Symbol(c1, Decl(constAssertions.ts, 10, 3))

let a1 = [] as const;
>a1 : Symbol(a1, Decl(constAssertions.ts, 23, 3))
>const : Symbol(const)

let a2 = [1, 2, 3] as const;
>a2 : Symbol(a2, Decl(constAssertions.ts, 24, 3))
>const : Symbol(const)

let a3 = [10, 'hello', true] as const;
>a3 : Symbol(a3, Decl(constAssertions.ts, 25, 3))
>const : Symbol(const)

let a4 = [...[1, 2, 3]] as const;
>a4 : Symbol(a4, Decl(constAssertions.ts, 26, 3))
>const : Symbol(const)

let a5 = [1, 2, 3];
>a5 : Symbol(a5, Decl(constAssertions.ts, 27, 3))

let a6 = [...a5] as const;
>a6 : Symbol(a6, Decl(constAssertions.ts, 28, 3))
>a5 : Symbol(a5, Decl(constAssertions.ts, 27, 3))
>const : Symbol(const)

let a7 = [...a6];
>a7 : Symbol(a7, Decl(constAssertions.ts, 29, 3))
>a6 : Symbol(a6, Decl(constAssertions.ts, 28, 3))

let a8 = ['abc', ...a7] as const;
>a8 : Symbol(a8, Decl(constAssertions.ts, 30, 3))
>a7 : Symbol(a7, Decl(constAssertions.ts, 29, 3))
>const : Symbol(const)

let a9 = [...a8];
>a9 : Symbol(a9, Decl(constAssertions.ts, 31, 3))
>a8 : Symbol(a8, Decl(constAssertions.ts, 30, 3))

declare let d: { [x: string]: string };
>d : Symbol(d, Decl(constAssertions.ts, 33, 11))
>x : Symbol(x, Decl(constAssertions.ts, 33, 18))

let o1 = { x: 10, y: 20 } as const;
>o1 : Symbol(o1, Decl(constAssertions.ts, 35, 3))
>x : Symbol(x, Decl(constAssertions.ts, 35, 10))
>y : Symbol(y, Decl(constAssertions.ts, 35, 17))
>const : Symbol(const)

let o2 = { a: 1, 'b': 2, ['c']: 3, d() {}, ['e' + '']: 4 } as const;
>o2 : Symbol(o2, Decl(constAssertions.ts, 36, 3))
>a : Symbol(a, Decl(constAssertions.ts, 36, 10))
>'b' : Symbol('b', Decl(constAssertions.ts, 36, 16))
>['c'] : Symbol(['c'], Decl(constAssertions.ts, 36, 24))
>'c' : Symbol(['c'], Decl(constAssertions.ts, 36, 24))
>d : Symbol(d, Decl(constAssertions.ts, 36, 34))
>['e' + ''] : Symbol(['e' + ''], Decl(constAssertions.ts, 36, 42))
>const : Symbol(const)

let o3 = { ...o1, ...o2 } as const;
>o3 : Symbol(o3, Decl(constAssertions.ts, 37, 3))
>o1 : Symbol(o1, Decl(constAssertions.ts, 35, 3))
>o2 : Symbol(o2, Decl(constAssertions.ts, 36, 3))
>const : Symbol(const)

let o4 = { a: 1, b: 2 };
>o4 : Symbol(o4, Decl(constAssertions.ts, 38, 3))
>a : Symbol(a, Decl(constAssertions.ts, 38, 10))
>b : Symbol(b, Decl(constAssertions.ts, 38, 16))

let o5 = { ...o4 } as const;
>o5 : Symbol(o5, Decl(constAssertions.ts, 39, 3))
>o4 : Symbol(o4, Decl(constAssertions.ts, 38, 3))
>const : Symbol(const)

let o6 = { ...o5 };
>o6 : Symbol(o6, Decl(constAssertions.ts, 40, 3))
>o5 : Symbol(o5, Decl(constAssertions.ts, 39, 3))

let o7 = { ...d } as const;
>o7 : Symbol(o7, Decl(constAssertions.ts, 41, 3))
>d : Symbol(d, Decl(constAssertions.ts, 33, 11))
>const : Symbol(const)

let o8 = { ...o7 };
>o8 : Symbol(o8, Decl(constAssertions.ts, 42, 3))
>o7 : Symbol(o7, Decl(constAssertions.ts, 41, 3))

let o9 = { x: 10, foo() { this.x = 20 } } as const;  // Error
>o9 : Symbol(o9, Decl(constAssertions.ts, 43, 3))
>x : Symbol(x, Decl(constAssertions.ts, 43, 10))
>foo : Symbol(foo, Decl(constAssertions.ts, 43, 17))
>this.x : Symbol(x, Decl(constAssertions.ts, 43, 10))
>this : Symbol(__object, Decl(constAssertions.ts, 43, 8))
>x : Symbol(x, Decl(constAssertions.ts, 43, 10))
>const : Symbol(const)

let p1 = (10) as const;
>p1 : Symbol(p1, Decl(constAssertions.ts, 45, 3))
>const : Symbol(const)

let p2 = ((-10)) as const;
>p2 : Symbol(p2, Decl(constAssertions.ts, 46, 3))
>const : Symbol(const)

let p3 = ([(10)]) as const;
>p3 : Symbol(p3, Decl(constAssertions.ts, 47, 3))
>const : Symbol(const)

let p4 = [[[[10]]]] as const;
>p4 : Symbol(p4, Decl(constAssertions.ts, 48, 3))
>const : Symbol(const)

let x1 = { x: 10, y: [20, 30], z: { a: { b: 42 } } } as const;
>x1 : Symbol(x1, Decl(constAssertions.ts, 50, 3))
>x : Symbol(x, Decl(constAssertions.ts, 50, 10))
>y : Symbol(y, Decl(constAssertions.ts, 50, 17))
>z : Symbol(z, Decl(constAssertions.ts, 50, 30))
>a : Symbol(a, Decl(constAssertions.ts, 50, 35))
>b : Symbol(b, Decl(constAssertions.ts, 50, 40))
>const : Symbol(const)

let q1 = <const> 10;
>q1 : Symbol(q1, Decl(constAssertions.ts, 52, 3))
>const : Symbol(const)

let q2 = <const> 'abc';
>q2 : Symbol(q2, Decl(constAssertions.ts, 53, 3))
>const : Symbol(const)

let q3 = <const> true;
>q3 : Symbol(q3, Decl(constAssertions.ts, 54, 3))
>const : Symbol(const)

let q4 = <const> [1, 2, 3];
>q4 : Symbol(q4, Decl(constAssertions.ts, 55, 3))
>const : Symbol(const)

let q5 = <const> { x: 10, y: 20 };
>q5 : Symbol(q5, Decl(constAssertions.ts, 56, 3))
>const : Symbol(const)
>x : Symbol(x, Decl(constAssertions.ts, 56, 18))
>y : Symbol(y, Decl(constAssertions.ts, 56, 25))

declare function id<T>(x: T): T;
>id : Symbol(id, Decl(constAssertions.ts, 56, 34))
>T : Symbol(T, Decl(constAssertions.ts, 58, 20))
>x : Symbol(x, Decl(constAssertions.ts, 58, 23))
>T : Symbol(T, Decl(constAssertions.ts, 58, 20))
>T : Symbol(T, Decl(constAssertions.ts, 58, 20))

let e1 = v1 as const;  // Error
>e1 : Symbol(e1, Decl(constAssertions.ts, 60, 3))
>v1 : Symbol(v1, Decl(constAssertions.ts, 0, 3))
>const : Symbol(const)

let e2 = (true ? 1 : 0) as const;  // Error
>e2 : Symbol(e2, Decl(constAssertions.ts, 61, 3))
>const : Symbol(const)

let e3 = id(1) as const;  // Error
>e3 : Symbol(e3, Decl(constAssertions.ts, 62, 3))
>id : Symbol(id, Decl(constAssertions.ts, 56, 34))
>const : Symbol(const)

let t1 = 'foo' as const;
>t1 : Symbol(t1, Decl(constAssertions.ts, 64, 3))
>const : Symbol(const)

let t2 = 'bar' as const;
>t2 : Symbol(t2, Decl(constAssertions.ts, 65, 3))
>const : Symbol(const)

let t3 = `${t1}-${t2}` as const;
>t3 : Symbol(t3, Decl(constAssertions.ts, 66, 3))
>t1 : Symbol(t1, Decl(constAssertions.ts, 64, 3))
>t2 : Symbol(t2, Decl(constAssertions.ts, 65, 3))
>const : Symbol(const)

let t4 = `${`(${t1})`}-${`(${t2})`}` as const;
>t4 : Symbol(t4, Decl(constAssertions.ts, 67, 3))
>t1 : Symbol(t1, Decl(constAssertions.ts, 64, 3))
>t2 : Symbol(t2, Decl(constAssertions.ts, 65, 3))
>const : Symbol(const)

function ff1(x: 'foo' | 'bar', y: 1 | 2) {
>ff1 : Symbol(ff1, Decl(constAssertions.ts, 67, 46))
>x : Symbol(x, Decl(constAssertions.ts, 69, 13))
>y : Symbol(y, Decl(constAssertions.ts, 69, 30))

    return `${x}-${y}` as const;
>x : Symbol(x, Decl(constAssertions.ts, 69, 13))
>y : Symbol(y, Decl(constAssertions.ts, 69, 30))
>const : Symbol(const)
}

function ff2<T extends string, U extends string>(x: T, y: U) {
>ff2 : Symbol(ff2, Decl(constAssertions.ts, 71, 1))
>T : Symbol(T, Decl(constAssertions.ts, 73, 13))
>U : Symbol(U, Decl(constAssertions.ts, 73, 30))
>x : Symbol(x, Decl(constAssertions.ts, 73, 49))
>T : Symbol(T, Decl(constAssertions.ts, 73, 13))
>y : Symbol(y, Decl(constAssertions.ts, 73, 54))
>U : Symbol(U, Decl(constAssertions.ts, 73, 30))

    return `${x}-${y}` as const;
>x : Symbol(x, Decl(constAssertions.ts, 73, 49))
>y : Symbol(y, Decl(constAssertions.ts, 73, 54))
>const : Symbol(const)
}

const ts1 = ff2('foo', 'bar');
>ts1 : Symbol(ts1, Decl(constAssertions.ts, 77, 5))
>ff2 : Symbol(ff2, Decl(constAssertions.ts, 71, 1))

const ts2 = ff2('foo', !!true ? '0' : '1');
>ts2 : Symbol(ts2, Decl(constAssertions.ts, 78, 5))
>ff2 : Symbol(ff2, Decl(constAssertions.ts, 71, 1))

const ts3 = ff2(!!true ? 'top' : 'bottom', !!true ? 'left' : 'right');
>ts3 : Symbol(ts3, Decl(constAssertions.ts, 79, 5))
>ff2 : Symbol(ff2, Decl(constAssertions.ts, 71, 1))

function ff3(x: 'foo' | 'bar', y: object) {
>ff3 : Symbol(ff3, Decl(constAssertions.ts, 79, 70))
>x : Symbol(x, Decl(constAssertions.ts, 81, 13))
>y : Symbol(y, Decl(constAssertions.ts, 81, 30))

    return `${x}${y}` as const;
>x : Symbol(x, Decl(constAssertions.ts, 81, 13))
>y : Symbol(y, Decl(constAssertions.ts, 81, 30))
>const : Symbol(const)
}

type Action = "verify" | "write";
>Action : Symbol(Action, Decl(constAssertions.ts, 83, 1))

type ContentMatch = "match" | "nonMatch";
>ContentMatch : Symbol(ContentMatch, Decl(constAssertions.ts, 85, 33))

type Outcome = `${Action}_${ContentMatch}`;
>Outcome : Symbol(Outcome, Decl(constAssertions.ts, 86, 41))
>Action : Symbol(Action, Decl(constAssertions.ts, 83, 1))
>ContentMatch : Symbol(ContentMatch, Decl(constAssertions.ts, 85, 33))

function ff4(verify: boolean, contentMatches: boolean) {
>ff4 : Symbol(ff4, Decl(constAssertions.ts, 87, 43))
>verify : Symbol(verify, Decl(constAssertions.ts, 89, 13))
>contentMatches : Symbol(contentMatches, Decl(constAssertions.ts, 89, 29))

    const action : Action = verify ? `verify` : `write`;
>action : Symbol(action, Decl(constAssertions.ts, 90, 9))
>Action : Symbol(Action, Decl(constAssertions.ts, 83, 1))
>verify : Symbol(verify, Decl(constAssertions.ts, 89, 13))

    const contentMatch: ContentMatch = contentMatches ? `match` : `nonMatch`;
>contentMatch : Symbol(contentMatch, Decl(constAssertions.ts, 91, 9))
>ContentMatch : Symbol(ContentMatch, Decl(constAssertions.ts, 85, 33))
>contentMatches : Symbol(contentMatches, Decl(constAssertions.ts, 89, 29))

    const outcome: Outcome = `${action}_${contentMatch}` as const;
>outcome : Symbol(outcome, Decl(constAssertions.ts, 92, 9))
>Outcome : Symbol(Outcome, Decl(constAssertions.ts, 86, 41))
>action : Symbol(action, Decl(constAssertions.ts, 90, 9))
>contentMatch : Symbol(contentMatch, Decl(constAssertions.ts, 91, 9))
>const : Symbol(const)

    return outcome;
>outcome : Symbol(outcome, Decl(constAssertions.ts, 92, 9))
}

function ff5(verify: boolean, contentMatches: boolean) {
>ff5 : Symbol(ff5, Decl(constAssertions.ts, 94, 1))
>verify : Symbol(verify, Decl(constAssertions.ts, 96, 13))
>contentMatches : Symbol(contentMatches, Decl(constAssertions.ts, 96, 29))

    const action = verify ? `verify` : `write`;
>action : Symbol(action, Decl(constAssertions.ts, 97, 9))
>verify : Symbol(verify, Decl(constAssertions.ts, 96, 13))

    const contentMatch = contentMatches ? `match` : `nonMatch`;
>contentMatch : Symbol(contentMatch, Decl(constAssertions.ts, 98, 9))
>contentMatches : Symbol(contentMatches, Decl(constAssertions.ts, 96, 29))

    const outcome = `${action}_${contentMatch}` as const;
>outcome : Symbol(outcome, Decl(constAssertions.ts, 99, 9))
>action : Symbol(action, Decl(constAssertions.ts, 97, 9))
>contentMatch : Symbol(contentMatch, Decl(constAssertions.ts, 98, 9))
>const : Symbol(const)

    return outcome;
>outcome : Symbol(outcome, Decl(constAssertions.ts, 99, 9))
}

function accessorNames<S extends string>(propName: S) {
>accessorNames : Symbol(accessorNames, Decl(constAssertions.ts, 101, 1))
>S : Symbol(S, Decl(constAssertions.ts, 103, 23))
>propName : Symbol(propName, Decl(constAssertions.ts, 103, 41))
>S : Symbol(S, Decl(constAssertions.ts, 103, 23))

    return [`get-${propName}`, `set-${propName}`] as const;
>propName : Symbol(propName, Decl(constAssertions.ts, 103, 41))
>propName : Symbol(propName, Decl(constAssertions.ts, 103, 41))
>const : Symbol(const)
}

const ns1 = accessorNames('foo');
>ns1 : Symbol(ns1, Decl(constAssertions.ts, 107, 5))
>accessorNames : Symbol(accessorNames, Decl(constAssertions.ts, 101, 1))