LikePromiseを強くする

[yaakaito]

interface LikePromise<T> {
  (value: T): void; // success alias
  (error: Error): void; // failure alias
  success(value: T): void;
  failure(error: Error): void;
}

future(complete => {
  complete("aaaa")
})

future((success, failure) => {
  failure(new Error("aaa"));
})

future(promise => {
  promise.success("aaaa");
});