BigInt.asUintN()

The BigInt.asUintN static method clamps a BigInt value to an unsigned integer value, and returns that value.

bits

The amount of bits available for the integer size.

bigint

The BigInt value to clamp to fit into the supplied bits.

The value of bigint modulo 2^bits, as an unsigned integer.

The BigInt.asUintN() method can be useful to stay in the range of 64-bit arithmetic.

const max = 2n ** 64n - 1n;

BigInt.asUintN(64, max);
// ↪ 18446744073709551615n

BigInt.asUintN(64, max + 1n);
// ↪ 0n
// zero because of overflow

• BigInt
• BigInt.asIntN()