@waku/rln/bundle/node_modules/protons-runtime/dist/src/utils/pool.js

RLN (Rate Limiting Nullifier) implementation for Waku

import { allocUnsafe } from '../../../../uint8arrays/dist/src/alloc.js';

/**
 * A general purpose buffer pool
 */
function pool(size) {
    const SIZE = 8192;
    const MAX = SIZE >>> 1;
    let slab;
    let offset = SIZE;
    return function poolAlloc(size) {
        if (size < 1 || size > MAX) {
            return allocUnsafe(size);
        }
        if (offset + size > SIZE) {
            slab = allocUnsafe(SIZE);
            offset = 0;
        }
        const buf = slab.subarray(offset, offset += size);
        if ((offset & 7) !== 0) {
            // align to 32 bit
            offset = (offset | 7) + 1;
        }
        return buf;
    };
}

export { pool as default };