Issues

• [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-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

• [TS] Improve import of types to use import {type int32 } from ... syntax

  TypeScript
  fable-compiler/Fable#4225 · Filter by author Freymaurer opened on Sep 17, 2025

• [Compiler] Enhancement - per file control over compiled file extension

  enhancement
  fable-compiler/Fable#4170 · Filter by author shayanhabibi opened on Jul 7, 2025
  4

• [JSX] Make JSX.create properties list not limited to static list but also works for conditions

  enhancementjavascript
  fable-compiler/Fable#4119 · Filter by author MangelMaxime opened on May 9, 2025
  11

• [JSX] Point user to JSX documentation explaining why JSX prop could not be detected compile

  enhancementjavascript
  fable-compiler/Fable#4117 · Filter by author MangelMaxime opened on May 9, 2025

• [JSX] Improve JSX "detection" for function call

  enhancementjavascript
  fable-compiler/Fable#4112 · Filter by author Freymaurer opened on May 8, 2025
  5

• No error on second compile for project with missing transient dependencies.

  bug
  fable-compiler/Fable#4094 · Filter by author Larocceau opened on Apr 11, 2025
  6

• Fable watch loop stops when a source file is temporarily in use by another process

  bug
  fable-compiler/Fable#4080 · Filter by author mlaily opened on Mar 15, 2025