Function flatMap

flatMap<T, U>(fn): ((t) => Promise<U>)
Maps and flatten an item in the promise by fn.
Type Parameters
- T
- U
Parameters
- fn: ((t) => Promise<U>)
  The function to transform T into U.
  - - (t): Promise<U>
    - Parameters
      t: T
      Returns Promise<U>
Returns ((t) => Promise<U>)
The transformed promise.
- - (t): Promise<U>
  - Parameters
    - t: Promise<T>
    Returns Promise<U>
- Defined in src/promise.ts:172

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