human-crypto-keys/es/utils/disable-worker.js

Generate and import human-friendly cryptographic keys using mnemonics or seeds

let refCount = 0;
let globalWorker;

const restore = () => {
  refCount -= 1;

  if (refCount <= 0 && globalWorker) {
    /* eslint-disable no-global-assign */
    Worker = globalWorker;
    /* eslint-enabled no-global-assign */
  }
};

const disableWorker = () => {
  refCount += 1;

  if (typeof Worker === 'undefined') {
    return restore;
  }

  globalWorker = Worker;
  /* eslint-disable no-global-assign */

  Worker = undefined;
  /* eslint-enabled no-global-assign */

  return restore;
};

export default disableWorker;