Fable

Added

• [JS/TS] Add ConditionalWeakTable (by @chkn)

Fixed

• [JS/TS] Fixed DateTime.Add for DateTimeKind.Unspecified (by @ncave)
• [Rust] Fixed deprecated NaiveDateTime usage in DateTime (by @ncave)
• [Rust] Fixed generic interface implementation types (by @ncave)
• [Rust] Fixed Dictionary constructor from IEnumerable (by @ncave)
• [Rust] Fixed Seq.cast support for arrays and lists (by @ncave)
• [JS/TS] Boolean.tryParse should not crash on null string (@goswinr)

Added

• [Rust] Added some boxing support (by @ncave)

Changed

• GH-3772 [JS/TS] Split replacement for DateTime and DateTimeOffset (by @MangelMaxime)

Fixed

• GH-3769 [All] Local plugin build does not run indefinably. (by @nojaf)
• GH-3769 [JS/TS] Types hidden by signature files should not be exported. (by @nojaf)
• GH-3772 [JS/TS] Re-implement DateTime.ToString custom format handling (by @MangelMaxime)
  It now supports all custom format specifiers, and behave as if CultureInfo.InvariantCulture was used (Fable does not support Globalization).
• GH-3772 [JS/TS] Make compilation fails if calling DateTime constructor with microseconds (by @MangelMaxime)
  JavaScript Date does not support microseconds, we need to wait for Temporal to be widely supported before reconsidering this.
• GH-3773 [Python] Fix DateTime custom format fffffff and FFFFFFF (by @MangelMaxime)

Added

JavaScript

• GH-3759 Add StringBuilder.Chars (by @MangelMaxime)
• Added range overload for String.ToCharArray (by @ncave)

Rust

• GH-3761 Added StringBuilder.Chars, StringBuilder.Remove and tests. (by @ncave)

Dart

• GH-3761 Added StringBuilder support and tests. (by @ncave)

Changed

JavaScript

• GH-3761 Updated StringBuilder to remove allocations where possible. (by @ncave)

Python

• GH-3761 Updated StringBuilder to remove allocations where possible. (by @ncave)

Fixed

JavaScript

• GH-3748 Accessing an array out of bounds should emit an exception (by @MangelMaxime)
• GH-3748 Setting an array out of bounds should emit an exception (by @MangelMaxime)
• GH-3761 Fixed incorrect StringBuilder.Remove implementation. (by @ncave)

Python

• GH-3761 Fixed incorrect StringBuilder.Remove implementation. (by @ncave)

Changed

• Update to Fable.AST 4.4.0

Fixed

JavaScript

• Embed fable-library-js in Fable DLL (by @MangelMaxime)

Added

All

• GH-3733 GH-3727 Add support for more Result API (by @zprobinson)
  • Result.isOk
  • Result.isError
  • Result.Contains
  • Result.Count
  • Result.DefaultValue
  • Result.DefaultWith
  • Result.Exists
  • Result.Fold
  • Result.FoldBack
  • Result.ForAll
  • Result.Iterate
  • Result.ToArray
  • Result.ToList
  • Result.ToOption
• GH-3721 Add --test:MSBuildCracker flag allowing to use the experimental MSBuildCracker (by @nojaf)

JavaScript

• GH-3745 Add support for ListCollector (by @nojaf)
  • instance.Add
  • instance.AddMany
  • instance.AddManyAndClose
  • instance.Close

Changed

JavaScript

• GH-3749 Rename fable-library to fable-library-js (by @MangelMaxime)

Removed

JavaScript

• Remove Choice.d.ts from source code of fable-library (by @MangelMaxime)

TypeScript

• Remove Choice.d.ts from source code of fable-library (by @MangelMaxime)

Fixed

Python

• GH-3717 Nested type with Custom Equality gives false negative equality (by @dbrattli)
• Generate assert statements for assert expressions in debug mode (by @dbrattli)

All

• GH-3744 Fix behaviour when passing --verbose to be consistent with behaviour before changing the logging library (by @nojaf)

Changed

All

• GH-3719 Restore dependencies against the .fsproj after evaluating the fable-temp.csproj file (Improves IDE supports) (by @MangelMaxime)
• Don't delete fable_modules when re-evaluating the project file after a changes has been detected (Improves HMR experience) (by @MangelMaxime)

Fixed

All

• GH-3723 Fix logger initialisation to allow --version to work (by @MangelMaxime)

JavaScript

• GH-3716 System.Array.Resize: also handle the case where the array is null (by @chkn)

Added

Python

• GH-3663 Complete rewrite of DateTime supports (by @MangelMaxime)
  Special thanks to @dbrattli and @ncave for their help

  • Constructors
    • From (year, month, day) up to (year, month, day, hour, minute, second, millisecond, microsecond) (with and without DateTimeKind)
    • From ticks (with and without DateTimeKind)
  • Instance methods:
    • dt.Year
    • dt.Month
    • dt.Day
    • dt.Hour
    • dt.Minute
    • dt.Second
    • dt.Millisecond
    • dt.Microsecond
    • dt.ToUniversalTime
    • dt.DayOfWeek
    • dt.DayOfYear
    • dt.ToShortDateString
    • dt.ToShortTimeString
    • dt.ToLongDateString
    • dt.ToLongTimeString
    • dt.ToString
    • dt.ToLocalTime
    • dt.Date
    • dt.AddYears
    • dt.AddMonths
    • dt.AddDays
    • dt.AddHours
    • dt.AddMinutes
    • dt.AddSeconds
    • dt.AddMilliseconds
    • dt.AddMicroseconds
    • dt.Kind
  • Static methods:
    • DateTime.Today
    • DateTime.Now
    • DateTime.Now
    • DateTime.UtcNow
    • DateTime.MinValue
    • DateTime.MaxValue
    • DateTime.Parse
    • DateTime.TryParse
    • DateTime.SpecifyKind

JavaScript

• GH-3715 Add support for System.Array.Resize (by @chkn)

Changed

All

• GH-3671 Use Microsoft.Extensions.Logging (by @nojaf)
• GH-3634 Suffix temporary csproj with .fable-temp.csproj and include a comment in the file (by @MangelMaxime)

Dart

• Fix DateTime.DayOfWeek (by @MangelMaxime)

Fixed

All

• Fixed function composition types (by @ncave)
• GH-3668 Normalize fable-library argument (by @nojaf)
• GH-3682 Support some custom unary math operors (Acos, Asin, Atan, Atan2, Cos, Cosh, Exp, Log, Log2, Log10, Sin, Sinh, Sqrt, Tan, Tanh) (by @PierreYvesR)
• GH-3603 Port back fixes for missing .gitignore file in the generated fable_modules/ folder (by @MangelMaxime)
• GH-3684 Re-compile files from fable_modules after changing the project file in watch mode (by @OrfeasZ)

Javascript

• Fixed 'System.Collections.Generic.Queue' bug (by @PierreYvesR)
• Fixed instance calls for generic comparers (by @ncave)

Python

• Fixed nested type with custom hashcode (by @dbrattli)
• Add 'Double.IsPositiveInfinity' (by @PierreYvesR)
• GH-3666 Fix for DateTime and TimeSpan addition (by @dbrattli)
• GH-3663 Fix DateTime.Parse and DateTime.TryParse (by @MangelMaxime)

JavaScript

• Fix DateTime.Parse when providing a 1 digit hour for PM times (3:5:34 PM) (by @MangelMaxime)

Rust

• Fixed unary negation for signed integer MinValue (by @ncave)
• Fixed excluding signature files from imports (by @ncave)
• Fixed generic try_catch closure trait (by @ncave)
• Fixed self arg capture in methods (by @ncave)
• Fixed 'System.Collections.Generic.Queue' bug (by @PierreYvesR)
• Added support for generic comparers (by @ncave)

Fixed

Python

• GH-3655 Fix for Python output file names (by @dbrattli)
• GH-3660 Fix for decimal to string with culture (by @dbrattli)

Fixed

All

• Fix the version reported by Fable (@MangelMaxime)

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.

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)

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)

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)

Changed

All

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

Fixed

Rust

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

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)

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)

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)

• Fix package to include Fable libraries folders