5.0.0-alpha.14

Added

• [Python] Support for Nullable Reference Types (by @dbrattli)
• [JS/TS] Fix #3533: Add directives prologues supports (by @MangelMaxime)
• [JS/TS] Support for Nullable Reference Types (by @ncave and @MangelMaxime)
• [Rust] Initial support for Nullable Reference Types (by @ncave)

Changed

• [Python] Use Python 3.12 type parameter syntax. Deprecate Python 3.10 and 3.11 (by @dbrattli)
• [Python] Records now snake-cases all member fields (by @dbrattli)
• [Python] Anonymous records now preserves the casing of member fields (by @dbrattli)
• [Python] Option type is now Option[T] instead of T | None (by @dbrattli)
• [Python] Use uv instead of Poetry for package management (by @dbrattli)
• [Python] Fable Library for Python is now partially written in Rust (by @dbrattli)
• [All] Improve filewatcher error messages (by @goswinr)

Fixed

• [Python] Fixed static properties and are now translated as Python class attributes (by @dbrattli)
• [Python] Fixed DateTime with DateTimeKind generates proper enum reference (#3689) (by @dbrattli)
• [Python] Fixed Dictionary KeyValuePair enumeration when casting to IEnumerable (#3771) (by @dbrattli)
• [Python] Fixed createEmpty<T> for interfaces using SimpleNamespace with type casting (#3604) (by @dbrattli)
• [Python] Fixed EmitMethod + ParamObject losing keyword arguments (#3871) (by @dbrattli)
• [Python] Fixed EmitConstructor + ParamObject losing keyword arguments (#3871) (by @dbrattli)
• [Python] Fixed DateTimeOffset.TryParse, ToString() and Offset property access (#3854) (by @dbrattli)
• [Python] Fixed anonymous records in Maps causing comparison errors (#3869) (by @dbrattli)
• [Python] Fixed handling of erased types for Python (#3968) (by @dbrattli)
• [Python] Fixed unit function (zero arguments functions) are transpiled inconsistently (#4126) (by @dbrattli)
• [Python] Fixed resource managers with empty body (#3912) (by @dbrattli)
• [Python] Fixed Async.Sleepto handle TimeSpan correctly (#4137) (by @dbrattli)
• [Python] Make sure snake-cased Record do not conflict (by @dbrattli)
• [Python] Do not return None | None for optional unit types (#4127) (by @dbrattli)
• [JS/TS] JSX : Alias empty CEs list to null when encountered in the children list (by @MangelMaxime)
• [JS/TS] JSX : Allow usage of unbox when definining properties for JSX.create (by @MangelMaxime)