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tests/cases/conformance/types/mapped/mappedTypesAndObjects.ts(25,11): error TS2430: Interface 'E1<T>' incorrectly extends interface 'Base'.
Types of property 'foo' are incompatible.
Type 'T' is not assignable to type '{ [key: string]: any; }'.
==== tests/cases/conformance/types/mapped/mappedTypesAndObjects.ts (1 errors) ====
function f1<T>(x: Partial<T>, y: Readonly<T>) {
let obj: {};
obj = x;
obj = y;
}
function f2<T>(x: Partial<T>, y: Readonly<T>) {
let obj: { [x: string]: any };
obj = x;
obj = y;
}
function f3<T>(x: Partial<T>) {
x = {};
}
// Repro from #12900
interface Base {
foo: { [key: string]: any };
bar: any;
baz: any;
}
interface E1<T> extends Base {
~~
!!! error TS2430: Interface 'E1<T>' incorrectly extends interface 'Base'.
!!! error TS2430: Types of property 'foo' are incompatible.
!!! error TS2430: Type 'T' is not assignable to type '{ [key: string]: any; }'.
!!! related TS2208 tests/cases/conformance/types/mapped/mappedTypesAndObjects.ts:25:14: This type parameter might need an `extends { [key: string]: any; }` constraint.
foo: T;
}
interface Something { name: string, value: string };
interface E2 extends Base {
foo: Partial<Something>; // or other mapped type
}
interface E3<T> extends Base {
foo: Partial<T>; // or other mapped type
}
// Repro from #13747
class Form<T> {
private values: {[P in keyof T]?: T[P]} = {}
}
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