pusher-js/src/core/utils/flat_promise.ts

Pusher Channels JavaScript library for browsers, React Native, NodeJS and web workers

function flatPromise() {
  let resolve, reject;
  const promise = new Promise((res, rej) => {
    resolve = res;
    reject = rej;
  });
  return { promise, resolve, reject };
}

export default flatPromise;