Function prefixKeys

prefixKeys<
    Root extends string,
    T extends Record<string, unknown>,
    Excluded extends readonly (keyof T)[] = [],
>(
    obj: T,
    root: Root,
    exclude?: Excluded,
): PrefixKeys<T, Root, Excluded[number]>

prefixKeys<
    Root extends string,
    T extends Record<string, unknown>,
    Excluded extends readonly (keyof T)[] = [],
>(
    obj: T | undefined,
    root: Root,
    exclude?: Excluded,
): PrefixKeys<T, Root, Excluded[number]> | undefined