Function withReaderT

withReaderT<R1, R2>(
mapper: (record: R1) => R2,
): <M, A>(r: ReaderT<R2, M, A>) => 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: R1) => R2
  The transformer from new record to old record.
Returns <M, A>(r: ReaderT<R2, M, A>) => ReaderT<R1, M, A>
The mapped environment.
- Defined in src/reader.ts:70