Roadmap

3.0.0

• make type class members pipe-ables
• make all functions pipe-able
• change HKT encoding
• remove mutable modules (Array, Map, NonEmptyArray, Record, Set, Tuple)
• switch to readonly arrays / tuples everywhere
• change ReadonlyNonEmptyArray definition to readonly [A, ...Array<A>]
• drop CJS
• migration path (codemods?)

2.14.0

• migration path

Renaming

• apFirst -> zipLeftPar
• apSecond -> zipRightPar
• mapLeft -> mapError
• bimap -> mapBoth
• chain* -> flatMap*
• chainFirst -> tap
• chainRec -> flatMapRec
• wilt -> partitionMapE
• wither -> filterMapE
• orElseFirst -> tapError
• Lazy -> LazyArg
• alt -> combineK
• zero -> emptyK
• concat -> combine
• apS -> bindPar
• Alt -> SemigroupK
• Alternative -> MonoidK
• Chain -> Flattenable
• ChainRec -> FlattenableRec
• Extend -> Extendable
• NaturalTransformation -> FunctionK
• Semigroupoid -> Composable
• Witherable -> FilterableWithEffect

Backporting

• FromOption module
• add logging helpers (log, logError)
• add filter helpers
• lift2 / lift3