async-compose.ts

interface AsyncCompose {
  <Options, R1, R2, R3>(
    f: (options: Options) => R1,
    g: (arg: Awaited<R1>, options: Options) => R2,
    h: (arg: Awaited<R2>, options: Options) => R3,
  ): (options: Options) => R2;
  <R1, R2>(f: () => R1, g: (arg: Awaited<R1>) => R2): () => R2;
  <Options, R1, R2>(
    f: (options: Options) => R1,
    g: (arg: Awaited<R1>, options: Options) => R2,
  ): (options: Options) => R2;
}

const compose: AsyncCompose =
  <Options>(
    f: (options: Options) => unknown,
    ...gs: Array<(result: unknown, options: Options) => unknown>
  ) =>
  (options?: Options) =>
    gs.reduce(async (result, g) => g(await result, options), f(options));