Function withReaderT

withReaderT<R1, R2>(mapper): (<M, A>(r) => ReaderT<R1, M, A>)
Maps the record of environment by mapper. Note that the mapping is a contravariant.
Type Parameters
- R1
- R2
Parameters
- mapper: ((record) => R2)
  The transformer from new record to old record.
  - - (record): R2
    - Parameters
      record: R1
      Returns R2
Returns (<M, A>(r) => ReaderT<R1, M, A>)
The mapped environment.
- - <M, A>(r): ReaderT<R1, M, A>
  - Type Parameters
    - M
    - A
    Parameters
    - r: ReaderT<R2, M, A>
    Returns ReaderT<R1, M, A>
- Defined in src/reader.ts:64

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