constAssertions.errors.txt

tests/cases/conformance/expressions/typeAssertions/constAssertions.ts(44,32): error TS2540: Cannot assign to 'x' because it is a read-only property.
tests/cases/conformance/expressions/typeAssertions/constAssertions.ts(61,10): error TS1355: A 'const' assertions can only be applied to references to enum members, or string, number, boolean, array, or object literals.
tests/cases/conformance/expressions/typeAssertions/constAssertions.ts(62,10): error TS1355: A 'const' assertions can only be applied to references to enum members, or string, number, boolean, array, or object literals.
tests/cases/conformance/expressions/typeAssertions/constAssertions.ts(63,10): error TS1355: A 'const' assertions can only be applied to references to enum members, or string, number, boolean, array, or object literals.


==== tests/cases/conformance/expressions/typeAssertions/constAssertions.ts (4 errors) ====
    let v1 = 'abc' as const;
    let v2 = `abc` as const;
    let v3 = 10 as const;
    let v4 = -10 as const;
    let v5 = +10 as const;
    let v6 = 10n as const;
    let v7 = -10n as const;
    let v8 = true as const;
    let v9 = false as const;
    
    let c1 = 'abc' as const;
    let c2 = `abc` as const;
    let c3 = 10 as const;
    let c4 = -10 as const;
    let c5 = +10 as const;
    let c6 = 10n as const;
    let c7 = -10n as const;
    let c8 = true as const;
    let c9 = false as const;
    
    let vv1 = v1;
    let vc1 = c1;
    
    let a1 = [] as const;
    let a2 = [1, 2, 3] as const;
    let a3 = [10, 'hello', true] as const;
    let a4 = [...[1, 2, 3]] as const;
    let a5 = [1, 2, 3];
    let a6 = [...a5] as const;
    let a7 = [...a6];
    let a8 = ['abc', ...a7] as const;
    let a9 = [...a8];
    
    declare let d: { [x: string]: string };
    
    let o1 = { x: 10, y: 20 } as const;
    let o2 = { a: 1, 'b': 2, ['c']: 3, d() {}, ['e' + '']: 4 } as const;
    let o3 = { ...o1, ...o2 } as const;
    let o4 = { a: 1, b: 2 };
    let o5 = { ...o4 } as const;
    let o6 = { ...o5 };
    let o7 = { ...d } as const;
    let o8 = { ...o7 };
    let o9 = { x: 10, foo() { this.x = 20 } } as const;  // Error
                                   ~
!!! error TS2540: Cannot assign to 'x' because it is a read-only property.
    
    let p1 = (10) as const;
    let p2 = ((-10)) as const;
    let p3 = ([(10)]) as const;
    let p4 = [[[[10]]]] as const;
    
    let x1 = { x: 10, y: [20, 30], z: { a: { b: 42 } } } as const;
    
    let q1 = <const> 10;
    let q2 = <const> 'abc';
    let q3 = <const> true;
    let q4 = <const> [1, 2, 3];
    let q5 = <const> { x: 10, y: 20 };
    
    declare function id<T>(x: T): T;
    
    let e1 = v1 as const;  // Error
             ~~
!!! error TS1355: A 'const' assertions can only be applied to references to enum members, or string, number, boolean, array, or object literals.
    let e2 = (true ? 1 : 0) as const;  // Error
             ~~~~~~~~~~~~~~
!!! error TS1355: A 'const' assertions can only be applied to references to enum members, or string, number, boolean, array, or object literals.
    let e3 = id(1) as const;  // Error
             ~~~~~
!!! error TS1355: A 'const' assertions can only be applied to references to enum members, or string, number, boolean, array, or object literals.