export declare function withFallback<T1, T2 extends NonNullable<unknown>>(value1: T1, value2: T2): NonNullable<T1> | T2;
export declare function withFallback<T1, T2, T3 extends NonNullable<unknown>>(value1: T1, value2: T2, value3?: T3): NonNullable<T2> | T3;