Class

ch6-thread-pool/rpc-worker.js:5–5

const STRATEGIES = new Set([ 'roundrobin', 'random', 'leastbusy' ]);

module.exports = class RpcWorkerPool {
  constructor(path, size = 0, strategy = 'roundrobin') {
    if (size === 0)     this.size = CORES; // <1>
    else if (size < 0)  this.size = Math.max(CORES + size, 1);