Function bigIntModulo

lib/internal/webidl.js:250–254

* Returns x modulo y for Web IDL ConvertToInt step 10. * * This is intentionally not a general modulo helper. ConvertToInt only calls * it with a positive power-of-two modulus, and the implementation assumes * that. BigInt has no -0, but this mirrors modulo()'s mathematical modulo * behavior fo

(x, y)

 * @returns {bigint}
 */
function bigIntModulo(x, y) {
  // Web IDL ConvertToInt step 10 uses mathematical modulo.
  const r = x % y;
  return r >= 0n ? r : r + y;
}

/**
 * Returns ToNumber(V).