Fable 5.22.0 released!

NewsBot · 16 October 2026 23:19

Fable 5.22.0 has been released.

Features

(js/ts/python/beam) Support Async.TryCancelled (#5083) (1643297d)

Bug Fixes

(all) Recompile dependents on signature change in watch (#5084) (87fc89f7)

(all) Forward --targetprofile for precompile (#5085) (50129598)

(beam) Make lazy sequence wrappers process-portable (#5063) (9e78a3b3)

(js/ts) Avoid full array copy in Encoding.GetString (#5069) (e6b72ec7)

(js/ts/python) Preserve cancelled cleanup and generic unit callbacks (#5062) (5dd6b497)

(python) Settle cancelled tasks awaited by async workflows (#5064) (52186937)

(python) Preserve reusable replies and unit continuations (#5082) (f19e2c56)

(python) Emit widening integer casts (#5087) (07989b16)

(rust) Support inref struct unions (#5060) (a3f27e0e)

Performance Improvements

Crack project references in parallel (#5079) (d42aa6b9)

Update inline expressions incrementally in watch mode (#5080) ([594d17b4](perf: update inline expressions incrementally in watch mode (#5080) · fable-compiler/Fable@594d17b · GitHub…

Link: Release 5.22.0 · fable-compiler/Fable · GitHub