8 lines
617 B
TypeScript
8 lines
617 B
TypeScript
/**
|
|
* Makes all the properties of an object optional, including nested objects,
|
|
* and strips all keys that their value is not of the specified allowed value types.
|
|
*/
|
|
export type OverridesObject<T, AllowedValueTypes> = T extends object ? {
|
|
[P in keyof T]?: OverridesObject<T[P], AllowedValueTypes>;
|
|
} : T extends Array<infer I> ? AllowedValueTypes extends Array<any> ? Array<OverridesObject<I, AllowedValueTypes>> : never : T extends ReadonlyArray<infer I> ? AllowedValueTypes extends ReadonlyArray<any> ? ReadonlyArray<OverridesObject<I, AllowedValueTypes>> : never : AllowedValueTypes extends T ? T : never;
|