JezK
Edit File: BitSet.js
export class BitSet { vector = new Int32Array(1); has(n) { return (this.vector[n >>> 5] & 1 << n) !== 0; } add(n) { const i = n >>> 5, requiredLength = i + 1; let { vector } = this, { length } = vector; if (requiredLength > length) { while (requiredLength > (length *= 2)); const oldValues = vector; vector = new Int32Array(length); vector.set(oldValues); this.vector = vector; } vector[i] |= 1 << n; } }