4.8.0

Added

Python

• GH-3645 Add TimeSpan.Parse and TimeSpan.TryParse support to Python (by @MangelMaxime)
• GH-3649 Fixes for List.sortBy (by @dbrattli)
• GH-3638 Fixes for Array.sort and Array.sortDescending (by @dbrattli)

Fixed

JavaScript

• GH-3465 Fix string.IndexOfAny (by @pkese)

Python

• GH-3465 Fix string.IndexOfAny (by @pkese)

Changed

All

• Updated FCS to fce0cf00585c12174fa3e51e4fc34afe784b9b4e (by @ncave)
• • GH-3675 Breaking Change static members always require static member, disregarding FCS from F# v7.0 and early v8.0 supported dismissing the member keyword.

4.7.0

Added

All

• Overall performance improvements
  • GH-3620 Removed double-dictionary lookups (by @Thorium)
  • GH-3624 Add G-Research analyzers and fix reported issues (by @nojaf)

Fixed

All

• GH-3603 Missing .gitignore file in the generated `fable_modules/`` folder (by @MangelMaxime)

Python

• GH-3617: Fix comparaison between list option when one is None (by @MangelMaxime)
• GH-3615: Fix remove from dictionary with tuple as key (by @dbrattli)
• GH-3598: Using obj () now generated an empty dict instead of None (by @dbrattli)
• GH-3597: Do not translate .toString methods to str (by @dbrattli)
• GH-3610: Cleanup Python regex handling (by @dbrattli)
• GH-3628: System.DateTime.Substract not correctly transpiled (by @dbrattli)
• GH-3640: All union cases return the same hash code (by @dbrattli)

4.6.0

Added

All

• Fix #3584: Unit type compiles to undeclared variable (by @ncave)

Python

• Support DateTime(..., DateTimeKind.Utc).ToString("O") (by @MangelMaxime)

Rust

• Added Guid.TryParse, Guid.ToByteArray (by @ncave)

Changed

All

• Updated .NET metadata to 8.0.100 (by @ncave)

Fixed

Python

• Fixed char to string type regression with binary operator (by @dbrattli)
• Fix DateTime(..., DateTimeKind.Local).ToString("O") (by @MangelMaxime)
• Fix calling value.ToString(CultureInfo.InvariantCulture) (by @MangelMaxime)
• Fix #3605: Fix record equality comparison to works with optional fields (by @MangelMaxime and @dbrattli)
• PR #3608: Rewrite time_span.py allowing for better precision by using a number representation intead of native timedelta. (by @MangelMaxime)

4.5.0

Changed

Python

• Use Any type for all non-repeated generic arguments (by @dbrattli)
• Don't generate unnecessary type type-vars if generic type is replaced by Any (by @dbrattli)
• Generate new style _T | None instead of Optional[_T] (by @dbrattli)

Rust

• Support multiple namespaces sharing a prefix in the same file (by @ncave)
• Support imports with the same namespace across multiple files (by @ncave)

Fixed

JavaScript

• Fix #3571: [<AttachMembers>] not compatible with f# member this.Item (by @ncave)

4.4.1

Changed

All

• Fix #3567: Turn off FCS warning 3560 by default (by @vzarytovskii)

Fixed

Rust

• Fixed recursive lambda captured idents cloning (by @ncave)

4.4.0

Changed

All

• Updated FCS to bd66d54b1ac4dd0f252c0a37196c2ccd54628356 (by @ncave)

JavaScript

• Support (un)curry up to 20 arguments (by @MangelMaxime)

Python

• Remove support for Python 3.9. Add GH testing for Python 3.12 (by @dbrattli)
• Support (un)curry up to 20 arguments (by @MangelMaxime)

Dart

• Support (un)curry up to 20 arguments (by @MangelMaxime)

4.3.0

Added

Python

• Added Async.StartChild (by @dbrattli)
• Fix #3482: Revert removal of Py.python and Py.expr_python (by @dbrattli)

Changed

JavaScript

• Improve error messages for Decimal.Parse, Double.Parse, Int32.Parse, Long.Parse (by @ncave)

Rust

• Improve error messages for BigInt.Parse, DateOnly.Parse, DateTime.Parse, DateTimeOffset.Parse, Decimal.Parse, TimeOnly.Parse (by @ncave)

Python

• Improve error messages for Double.Parse, Int32.Parse, Long.Parse (by @ncave)
• Refactored async trampoline leveraging asyncio mainloop. (by @dbrattli)

Fixed

JavaScript

• Fix #3541: Interface imported in generated javascript when DU has an interface type constraint (by @ncave)

Python

• Fixed Async.Parallel (by @dbrattli)

4.2.2

Fixed

• [Python] Fix #3527: Fix error name '...' is not defined (by @dbrattli)
• [Python] Fix #3496: Python target is confused with class taking a length: int argument (by @dbrattli)

4.2.1

• Fix package to include Fable libraries folders

4.2.0

• Fix #3480: Function decorated with [<NamedParams>] without arguments provided should take an empty object

• Fix #3494: Calling an attached parametrized getter fails in transpiled javascript

• Remove fable-py support

• Fix #3461: Don't default to javascript if the language requested by the user is unknown (help detect typo)

• Improve --help message for the --lang section

• Fix #3464: Invalidate cache when the target language changes

• Always delete the fable_modules folder when the cache is invalidated

• Remove --typescript options support, use --lang <target> instead

• Fix #3441: Don't ignore error when loading plugin

• Fix #3482: Remove Py.python and Py.expr_python use emitPyStatement and emitPyExpr instead

• Restrict replacements to accept only functions from their target language module

• Fix #3528: Consider functions hidden by a signature file as private (@nojaf)

• Improve error message when Fable doesn't find the fable-library folder.

  This is especially useful when working on Fable itself, and should save time to others.
  Each time I got this is error, I needed several minutes to remember the cause of it.