Function bit

bit(
    a0: Bit<0 | 1>,
    a1: undefined | number | Int4<0 | 1>,
    a2: undefined | boolean | Bool<0 | 1>,
): Bit<0 | 1>

bit(
    a0: undefined | number | Int4<0 | 1>,
    a1: undefined | number | Int4<0 | 1>,
): Bit<0 | 1>

bit(
    a0: undefined | bigint | Int8<0 | 1>,
    a1: undefined | number | Int4<0 | 1>,
): Bit<0 | 1>