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tests/cases/compiler/recursiveTypeRelations.ts(8,5): error TS2391: Function implementation is missing or not immediately following the declaration.
tests/cases/compiler/recursiveTypeRelations.ts(27,38): error TS2304: Cannot find name 'ClassNameObject'.
tests/cases/compiler/recursiveTypeRelations.ts(27,55): error TS2345: Argument of type '(obj: any, key: keyof S) => any' is not assignable to parameter of type '(previousValue: any, currentValue: string, currentIndex: number, array: string[]) => any'.
Types of parameters 'key' and 'currentValue' are incompatible.
Type 'string' is not assignable to type 'keyof S'.
tests/cases/compiler/recursiveTypeRelations.ts(27,61): error TS2304: Cannot find name 'ClassNameObject'.
==== tests/cases/compiler/recursiveTypeRelations.ts (4 errors) ====
// Repro from #14896
type Attributes<Keys extends keyof any> = {
[Key in Keys]: string;
}
class Query<A extends Attributes<keyof A>> {
multiply<B extends Attributes<keyof B>>(x: B): Query<A & B>;
~~~~~~~~
!!! error TS2391: Function implementation is missing or not immediately following the declaration.
}
// Repro from #14940
type ClassName<S> = keyof S;
type ClassNameMap<S> = { [K in keyof S]?: boolean }
type ClassNameObjectMap<S> = object & ClassNameMap<S>;
type ClassNameArg<S> = ClassName<S> | ClassNameObjectMap<S>;
export function css<S extends { [K in keyof S]: string }>(styles: S, ...classNames: ClassNameArg<S>[]): string {
const args = classNames.map(arg => {
if (arg == null) {
return null;
}
if (typeof arg == "string") {
return styles[arg];
}
if (typeof arg == "object") {
return Object.keys(arg).reduce<ClassNameObject>((obj: ClassNameObject, key: keyof S) => {
~~~~~~~~~~~~~~~
!!! error TS2304: Cannot find name 'ClassNameObject'.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
!!! error TS2345: Argument of type '(obj: any, key: keyof S) => any' is not assignable to parameter of type '(previousValue: any, currentValue: string, currentIndex: number, array: string[]) => any'.
!!! error TS2345: Types of parameters 'key' and 'currentValue' are incompatible.
!!! error TS2345: Type 'string' is not assignable to type 'keyof S'.
~~~~~~~~~~~~~~~
!!! error TS2304: Cannot find name 'ClassNameObject'.
const exportedClassName = styles[key];
obj[exportedClassName] = (arg as ClassNameMap<S>)[key];
return obj;
}, {});
}
});
return "";
}
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