1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
|
=== tests/cases/conformance/expressions/typeSatisfaction/typeSatisfaction_propertyNameFulfillment.ts ===
type Keys = 'a' | 'b' | 'c' | 'd';
>Keys : "a" | "b" | "c" | "d"
const p = {
>p : { a: number; b: string; x: number; }
>{ a: 0, b: "hello", x: 8 // Should error, 'x' isn't in 'Keys'} satisfies Record<Keys, unknown> : { a: number; b: string; x: number; }
>{ a: 0, b: "hello", x: 8 // Should error, 'x' isn't in 'Keys'} : { a: number; b: string; x: number; }
a: 0,
>a : number
>0 : 0
b: "hello",
>b : string
>"hello" : "hello"
x: 8 // Should error, 'x' isn't in 'Keys'
>x : number
>8 : 8
} satisfies Record<Keys, unknown>;
// Should be OK -- retain info that a is number and b is string
let a = p.a.toFixed();
>a : string
>p.a.toFixed() : string
>p.a.toFixed : (fractionDigits?: number) => string
>p.a : number
>p : { a: number; b: string; x: number; }
>a : number
>toFixed : (fractionDigits?: number) => string
let b = p.b.substring(1);
>b : string
>p.b.substring(1) : string
>p.b.substring : (start: number, end?: number) => string
>p.b : string
>p : { a: number; b: string; x: number; }
>b : string
>substring : (start: number, end?: number) => string
>1 : 1
// Should error even though 'd' is in 'Keys'
let d = p.d;
>d : any
>p.d : any
>p : { a: number; b: string; x: number; }
>d : any
|