Fantomas.Core
8.0.8
dotnet add package Fantomas.Core --version 8.0.8
NuGet\Install-Package Fantomas.Core -Version 8.0.8
<PackageReference Include="Fantomas.Core" Version="8.0.8" />
<PackageVersion Include="Fantomas.Core" Version="8.0.8" />
<PackageReference Include="Fantomas.Core" />
paket add Fantomas.Core --version 8.0.8
#r "nuget: Fantomas.Core, 8.0.8"
#:package Fantomas.Core@8.0.8
#addin nuget:?package=Fantomas.Core&version=8.0.8
#tool nuget:?package=Fantomas.Core&version=8.0.8
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 | net5.0 was computed. net5.0-windows was computed. net6.0 was computed. net6.0-android was computed. net6.0-ios was computed. net6.0-maccatalyst was computed. net6.0-macos was computed. net6.0-tvos was computed. net6.0-windows was computed. net7.0 was computed. net7.0-android was computed. net7.0-ios was computed. net7.0-maccatalyst was computed. net7.0-macos was computed. net7.0-tvos was computed. net7.0-windows was computed. net8.0 was computed. net8.0-android was computed. net8.0-browser was computed. net8.0-ios was computed. net8.0-maccatalyst was computed. net8.0-macos was computed. net8.0-tvos was computed. net8.0-windows was computed. net9.0 was computed. net9.0-android was computed. net9.0-browser was computed. net9.0-ios was computed. net9.0-maccatalyst was computed. net9.0-macos was computed. net9.0-tvos was computed. net9.0-windows was computed. net10.0 was computed. 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. |
| .NET Core | netcoreapp2.0 was computed. netcoreapp2.1 was computed. netcoreapp2.2 was computed. netcoreapp3.0 was computed. netcoreapp3.1 was computed. |
| .NET Standard | netstandard2.0 is compatible. netstandard2.1 was computed. |
| .NET Framework | net461 was computed. net462 was computed. net463 was computed. net47 was computed. net471 was computed. net472 was computed. net48 was computed. net481 was computed. |
| MonoAndroid | monoandroid was computed. |
| MonoMac | monomac was computed. |
| MonoTouch | monotouch was computed. |
| Tizen | tizen40 was computed. tizen60 was computed. |
| Xamarin.iOS | xamarinios was computed. |
| Xamarin.Mac | xamarinmac was computed. |
| Xamarin.TVOS | xamarintvos was computed. |
| Xamarin.WatchOS | xamarinwatchos was computed. |
-
.NETStandard 2.0
- Fantomas.FCS (>= 8.0.8)
- FSharp.Core (>= 10.0.100)
- System.Collections.Immutable (>= 10.0.12)
- System.Diagnostics.DiagnosticSource (>= 10.0.12)
- System.Memory (>= 4.6.3)
- System.Runtime (>= 4.3.1)
NuGet packages (5)
Showing the top 5 NuGet packages that depend on Fantomas.Core:
| Package | Downloads |
|---|---|
|
Myriad.Core
Core Myriad library used for developing plugins |
|
|
Fantomas.Extras
Utility package for Fantomas |
|
|
WoofWare.Whippet.Fantomas
Helpers for accessing Fantomas syntax trees. |
|
|
Fabulous.AST
Fabulous.AST, an Abstract Syntax Tree (AST) Domain Specific Language (DSL) for F#. |
|
|
Partas.Feliz.Generator
Package Description |
GitHub repositories
This package is not used by any popular GitHub repositories.
| Version | Downloads | Last Updated |
|---|---|---|
| 8.0.8 | 38 | 10/9/2026 |
| 8.0.7 | 128 | 10/5/2026 |
| 8.0.6 | 117 | 10/1/2026 |
| 8.0.5 | 199 | 9/25/2026 |
| 8.0.4 | 143 | 9/23/2026 |
| 8.0.3 | 120 | 9/23/2026 |
| 8.0.2 | 378 | 9/22/2026 |
| 8.0.1 | 122 | 9/21/2026 |
| 8.0.0 | 274 | 9/15/2026 |
| 8.0.0-beta-003 | 94 | 9/12/2026 |
| 8.0.0-beta-002 | 102 | 9/8/2026 |
| 8.0.0-beta-001 | 132 | 9/1/2026 |
| 8.0.0-alpha-026 | 160 | 8/29/2026 |
| 8.0.0-alpha-025 | 113 | 8/28/2026 |
| 8.0.0-alpha-024 | 101 | 8/28/2026 |
| 8.0.0-alpha-023 | 112 | 8/28/2026 |
| 8.0.0-alpha-022 | 121 | 8/27/2026 |
| 8.0.0-alpha-021 | 108 | 8/27/2026 |
| 8.0.0-alpha-020 | 114 | 8/27/2026 |
| 8.0.0-alpha-019 | 116 | 8/26/2026 |
### Changed
- Update FCS to 'Add range of the when keyword to SynMatchClauseTrivia', commit 409c7a62ea193ec060e87ccad78636feeb0883f1 [#3531](https://github.com/fsprojects/fantomas/pull/3531)
### Fixed
- Comment after 'when' on its own line is lost. The syntax tree had no range for the `when` keyword of a match clause, so a comment after it had no node on its line to attach to. The parser now records that range, and the comment stays after the keyword. [#3521](https://github.com/fsprojects/fantomas/issues/3521)