forked from microsoft/TypeScript
/
identicalTypesNoDifferByCheckOrder.ts
38 lines (29 loc) · 1.17 KB
/
identicalTypesNoDifferByCheckOrder.ts
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// @strictNullChecks: true
interface SomeProps {
x?: string;
y?: number;
renderAs?: FunctionComponent1<SomeProps>
}
type SomePropsX = Required<Pick<SomeProps, "x">> & Omit<SomeProps, "x">;
interface SomePropsClone {
x?: string;
y?: number;
renderAs?: FunctionComponent2<SomeProps>
}
type SomePropsCloneX = Required<Pick<SomePropsClone, "x">> & Omit<SomePropsClone, "x">;
type Validator<T> = {(): boolean, opt?: T};
type WeakValidationMap<T> = {[K in keyof T]?: null extends T[K] ? Validator<T[K] | null | undefined> : Validator<T[K]>};
interface FunctionComponent1<P> {
(props: P & { children?: unknown }): void;
propTypes?: WeakValidationMap<P>;
}
interface FunctionComponent2<P> {
(props: P & { children?: unknown }): void;
propTypes?: WeakValidationMap<P>;
}
function needsComponentOfSomeProps3(...x: SomePropsClone[]): void {}
const comp3: FunctionComponent2<SomePropsCloneX> = null as any;
needsComponentOfSomeProps3({ renderAs: comp3 });
function needsComponentOfSomeProps2(...x: SomeProps[]): void {}
const comp2: FunctionComponent1<SomePropsX> = null as any;
needsComponentOfSomeProps2({ renderAs: comp2 });