Issues

• [JS/TS] Support System.Diagnostics.Stopwatch

  fable-compiler/Fable#5099 · Filter by author simontreanor opened on Oct 16, 2026

• [JS/TS] Warn when Task.Result is used, as it returns the promise

  fable-compiler/Fable#5096 · Filter by author simontreanor opened on Oct 16, 2026

• [JS/TS] Support binding Async<'T> inside task { }

  fable-compiler/Fable#5095 · Filter by author simontreanor opened on Oct 16, 2026

• [JS/TS] Async.Parallel ignores maxDegreeOfParallelism and doesn't cancel the other computations when one fails

  fable-compiler/Fable#5094 · Filter by author simontreanor opened on Oct 16, 2026

• [JS/TS] Async.StartChild with a timeout doesn't cancel the child

  fable-compiler/Fable#5093 · Filter by author simontreanor opened on Oct 16, 2026

• [JS/TS] Async.StartAsTask, Async.Choice, Async.OnCancel and Task.Delay compile but the module fails to load

  fable-compiler/Fable#5092 · Filter by author simontreanor opened on Oct 16, 2026

• [TS] Docs say TypeScriptTaggedUnion inlines interface cases, but since 4.19.1 they are wrapped in Item

  fable-compiler/Fable#5078 · Filter by author shayanhabibi opened on Oct 15, 2026

• [JS/TS] Erased unions cannot match cases of interface type or of the same JS type

  fable-compiler/Fable#5077 · Filter by author shayanhabibi opened on Oct 15, 2026

• [JS/TS] TypeScriptTaggedUnion cannot represent cases that share a tag value

  fable-compiler/Fable#5075 · Filter by author shayanhabibi opened on Oct 15, 2026

• [JS-Bug?] Previously failing code now compiles to throw 1, without compile time error

  fable-compiler/Fable#5008 · Filter by author Freymaurer opened on Sep 28, 2026
  5

  

• [TS/JS] making the emitted JS match the emitted TS ?

  fable-compiler/Fable#4951 · Filter by author goswinr opened on Sep 8, 2026

• StructuredFormatDisplay is not used by formatted strings

  fable-compiler/Fable#4880 · Filter by author weebs opened on Aug 11, 2026

• Add warning for unsupported MidpointRounding when using Math.Round

  fable-compiler/Fable#4871 · Filter by author michael-tugby opened on Aug 4, 2026

• Non +/- 1 stepped for ranges still compile to an enumerator loop

  enhancement
  fable-compiler/Fable#4839 · Filter by author MangelMaxime opened on Jul 23, 2026

• [Python/JS/TS] Integer parsing accepts inputs .NET rejects (sign and 0x prefix with HexNumber, + before radix specifier)

  fable-compiler/Fable#4827 · Filter by author dbrattli opened on Jul 21, 2026

• ValueOption.iter should inline the passed lambda

  enhancementjavascript
  fable-compiler/Fable#4822 · Filter by author MangelMaxime opened on Jul 20, 2026

• No error or warning on duplicate CompiledName

  fable-compiler/Fable#4737 · Filter by author kerams opened on Jul 8, 2026
  5

• Implements Task support for Rust target

  enhancement
  fable-compiler/Fable#4699 · Filter by author MangelMaxime opened on Jun 29, 2026

• [Repo Assist] Monthly Activity 2026-05

  automationdiscussionrepo-assist
  fable-compiler/Fable#4586 · Filter by author fable-repo-assist opened on May 1, 2026

• [TS] Use "moduleResolution": "bundler" in tsconfig ?

  discussionTypeScript
  fable-compiler/Fable#4578 · Filter by author goswinr opened on Apr 27, 2026
  1

• [JS] Rework how we handle static field on class

  enhancementjavascriptTypeScript
  fable-compiler/Fable#4419 · Filter by author MangelMaxime opened on Mar 18, 2026
  1

• [JS/TS] Tests fail on timezone Australia/Melbourne (should works perhaps)

  bugjavascript
  fable-compiler/Fable#4375 · Filter by author olivercoad opened on Mar 2, 2026
  4

• How to cite this repository in scientific literature

  question
  fable-compiler/Fable#4306 · Filter by author kMutagene opened on Dec 23, 2025
  2

• Should we allow to disable reflection on a specific type?

  enhancementquestion
  fable-compiler/Fable#4241 · Filter by author MangelMaxime opened on Oct 23, 2025
  2

• Add support for Async.AwaitEvent

  enhancementjavascript
  fable-compiler/Fable#4239 · Filter by author MangelMaxime opened on Oct 21, 2025
  1