fantomas 8.0.7
dotnet tool install --global fantomas --version 8.0.7
dotnet new tool-manifest
dotnet tool install --local fantomas --version 8.0.7
#tool dotnet:?package=fantomas&version=8.0.7
nuke :add-package fantomas --version 8.0.7
Fantomas

An opinionated F# source code formatter.
dotnet tool install fantomas
Documentation is available at https://fsprojects.github.io/fantomas/docs/
If you point a coding agent at Fantomas, give it llms.txt for an index of the documentation, or llms-full.txt for all of it in one file.
Reporting a bug
Report bugs through the online tool, which opens an issue with everything needed to reproduce it.
With a coding agent, the fantomas-report skill shrinks the file Fantomas failed on to a minimal sample and opens the same issue form for you to review:
npx skills add fsprojects/fantomas --skill fantomas-report -g
See Reporting a bug for more.
Contributing Guidelines
See the Contribution Guidelines and our contributors documentation
| Product | Versions Compatible and additional computed target framework versions. |
|---|---|
| .NET | net10.0 is compatible. net10.0-android was computed. net10.0-browser was computed. net10.0-ios was computed. net10.0-maccatalyst was computed. net10.0-macos was computed. net10.0-tvos was computed. net10.0-windows was computed. |
This package has no dependencies.
| Version | Downloads | Last Updated |
|---|---|---|
| 8.0.7 | 0 | 10/5/2026 |
| 8.0.6 | 1,538 | 10/1/2026 |
| 8.0.5 | 8,631 | 9/25/2026 |
| 8.0.4 | 1,853 | 9/23/2026 |
| 8.0.3 | 462 | 9/23/2026 |
| 8.0.2 | 3,960 | 9/22/2026 |
| 8.0.1 | 1,686 | 9/21/2026 |
| 8.0.0 | 27,238 | 9/15/2026 |
| 8.0.0-beta-003 | 1,013 | 9/12/2026 |
| 8.0.0-beta-002 | 328 | 9/8/2026 |
| 8.0.0-beta-001 | 803 | 9/1/2026 |
| 8.0.0-alpha-026 | 347 | 8/29/2026 |
| 8.0.0-alpha-025 | 232 | 8/28/2026 |
| 8.0.0-alpha-024 | 129 | 8/28/2026 |
| 8.0.0-alpha-023 | 137 | 8/28/2026 |
| 8.0.0-alpha-022 | 354 | 8/27/2026 |
| 8.0.0-alpha-021 | 119 | 8/27/2026 |
| 8.0.0-alpha-020 | 133 | 8/27/2026 |
| 8.0.0-alpha-019 | 463 | 8/26/2026 |
| 8.0.0-alpha-018 | 126 | 8/26/2026 |
### Fixed
- Exception abbreviation loses its right-hand side. [#3511](https://github.com/fsprojects/fantomas/issues/3511)
- Static optimization when T struct loses struct. [#3514](https://github.com/fsprojects/fantomas/issues/3514)
- Static optimization loses the `and` between its conditions, and reverses its conditions and `when` clauses. [#3516](https://github.com/fsprojects/fantomas/pull/3516)
- static extern inside a type loses static. [#3515](https://github.com/fsprojects/fantomas/issues/3515)