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| interface IMonad<T> { | |
| andThen: <U>(fn: (value: T, finish: () => void) => U) => IMonad<U>; | |
| } | |
| export const Monad = <T>(initial: T, finished = false): IMonad<T> => { | |
| if (finished) { | |
| return { | |
| andThen: <U>(_: (_: T, _: () => void) => U) => { | |
| return Monad(null, true); | |
| }, |