Function listens

listens<W, B>(mapper): (<A>(writer) => Writer<W, [A, B]>)
Creates an action that executes writer, maps its output and adds to the value of the computation.
Type Parameters
- W
- B
Parameters
- mapper: ((w) => B)
  The function to map the output of the computation.
  - - (w): B
    - Parameters
      w: W
      Returns B
Returns (<A>(writer) => Writer<W, [A, B]>)
The computation that adds its output to the value.
- - <A>(writer): Writer<W, [A, B]>
  - Type Parameters
    - A
    Parameters
    - writer: Writer<W, A>
    Returns Writer<W, [A, B]>
- Defined in src/writer.ts:186

Generated using TypeDoc