Fable 5.27.0 released!

NewsBot · 4 November 2026 09:18

Fable 5.27.0 has been released.

Features

(js/ts/python/dart/rust/beam) Support Convert.ToHexString, ToHexStringLower and FromHexString (#5204) (3a3acf4e)

Bug Fixes

(all) Recompile when a source file is added or its output is missing (#4870) (a782afce)

(all) Keep reads of imported mutable values in place (#5242) (1190dfa5)

(all) Give imported .fsx files their output extension (#5241) (60771e07)

(all) Rename idents of a witness inlined twice (#5249) (1e41dcc5)

(js/ts) Round float32 results like .NET (#5222) (7b176e7e)

(js/ts) Unescape doubled braces in String.Format (#5231) (24e01fd3)

(js/ts) Treat null as empty in String.Join and Concat (#5230) (a7dcab8d)

(js/ts) Support MidpointRounding in Math.Round (#5233) (5a7ea990)

(js/ts) Print null strings as empty (6c22c162)

(js/ts) Match Dictionary/HashSet array keys by reference (#5239) (1d77d628)

(js/ts) Round exact midpoints to even in numeric formats (#5245) ([350a3900](https://github.com/fable-compiler/Fa…

Link: Release 5.27.0 · fable-compiler/Fable · GitHub