one/src/utils/promiseWithResolvers.ts

One is a React framework for web, iOS, and Android apps.

export function promiseWithResolvers<T>() {
  let a
  let b
  const c = new Promise<T>((resolve, reject) => {
    a = resolve
    b = reject
  })
  return { resolve: a, reject: b, promise: c }
}