method mapFrom.pick mapFrom.pick<TKey extends PropertyKey>(this: void,key: TKey,...keys: TKey[]): [K in TKey]: K Maps the specified properties to themselves as is const objectMapperSchema = { ...mapFrom.pick('a', 'b', 'c', 'd'), } Type Parameters TKey extends PropertyKey Parameters this: void key: TKey ...keys: TKey[] Return Type [K in TKey]: K