TypeScript/tests/baselines/reference/recursiveClassBaseType.types
Anders Hejlsberg a3eadfe905
Skip base type checks that can cause circularities (#44615)
* Don't do base type checks that can cause circularities

* Add regression tests
2021-06-16 13:36:43 -07:00

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=== tests/cases/compiler/recursiveClassBaseType.ts ===
// Repro from #44281
declare const p: <T>(fn: () => T) => T;
>p : <T>(fn: () => T) => T
>fn : () => T
declare const Base: <T>(val: T) => { new(): T };
>Base : <T>(val: T) => new () => T
>val : T
class C extends Base({ x: p<C[]>(() => []) }) { }
>C : C
>Base({ x: p<C[]>(() => []) }) : { x: C[]; }
>Base : <T>(val: T) => new () => T
>{ x: p<C[]>(() => []) } : { x: C[]; }
>x : C[]
>p<C[]>(() => []) : C[]
>p : <T>(fn: () => T) => T
>() => [] : () => never[]
>[] : never[]
// Repro from #44359
abstract class Base1 {
>Base1 : Base1
abstract root(): Derived1;
>root : () => Derived1
}
class Derived1 extends class extends Base1 {
>Derived1 : Derived1
>class extends Base1 { root() { return undefined as any; }} : (Anonymous class)
>Base1 : Base1
root() {
>root : () => any
return undefined as any;
>undefined as any : any
>undefined : undefined
}
}
{ }