Fantomas.Core
8.1.0
Prefix Reserved
See the version list below for details.
dotnet add package Fantomas.Core --version 8.1.0
NuGet\Install-Package Fantomas.Core -Version 8.1.0
<PackageReference Include="Fantomas.Core" Version="8.1.0" />
<PackageVersion Include="Fantomas.Core" Version="8.1.0" />
<PackageReference Include="Fantomas.Core" />
paket add Fantomas.Core --version 8.1.0
#r "nuget: Fantomas.Core, 8.1.0"
#:package Fantomas.Core@8.1.0
#addin nuget:?package=Fantomas.Core&version=8.1.0
#tool nuget:?package=Fantomas.Core&version=8.1.0
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 (>= 8.1.0)
- 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 |
|---|---|---|
| 9.0.0-alpha-002 | 32 | 10/21/2026 |
| 9.0.0-alpha-001 | 88 | 10/15/2026 |
| 8.1.0 | 44 | 10/21/2026 |
| 8.0.10 | 685 | 10/14/2026 |
| 8.0.9 | 78 | 10/14/2026 |
| 8.0.8 | 128 | 10/9/2026 |
| 8.0.7 | 222 | 10/5/2026 |
| 8.0.6 | 132 | 10/1/2026 |
| 8.0.5 | 219 | 9/25/2026 |
| 8.0.4 | 150 | 9/23/2026 |
| 8.0.3 | 129 | 9/23/2026 |
| 8.0.2 | 402 | 9/22/2026 |
| 8.0.1 | 130 | 9/21/2026 |
| 8.0.0 | 281 | 9/15/2026 |
| 8.0.0-beta-003 | 101 | 9/12/2026 |
| 8.0.0-beta-002 | 107 | 9/8/2026 |
| 8.0.0-beta-001 | 140 | 9/1/2026 |
| 8.0.0-alpha-026 | 166 | 8/29/2026 |
| 8.0.0-alpha-025 | 121 | 8/28/2026 |
| 8.0.0-alpha-024 | 109 | 8/28/2026 |
### Changed
- Multiline tuple type after a cast or type annotation operator goes one level in. [#3561](https://github.com/fsprojects/fantomas/pull/3561)
- Line comment lined up with the first element of its container stays with the elements. [#3561](https://github.com/fsprojects/fantomas/pull/3561)
### Fixed
- Parenthesized function type gets an extra indent level where no outer function type needs it. [#3554](https://github.com/fsprojects/fantomas/issues/3554)
- Multiline tuple in the middle of a function type gives invalid code. [#3556](https://github.com/fsprojects/fantomas/issues/3556)
- Parenthesized function type after an arrow gives invalid code with indent_size 2. [#3557](https://github.com/fsprojects/fantomas/issues/3557)
- Long type test with :? gives invalid code. [#3558](https://github.com/fsprojects/fantomas/issues/3558)
- Line comment after the opening parenthesis of a type moves and breaks the type. [#3559](https://github.com/fsprojects/fantomas/issues/3559)
- Comment between a match pattern and its when guard gives invalid code. [#3560](https://github.com/fsprojects/fantomas/issues/3560)
- Regression: Stroustrup bracket style in anonymous record type parameter is not respected. [#3069](https://github.com/fsprojects/fantomas/issues/3069)
- Space inserted before final > in type parameter. [#2860](https://github.com/fsprojects/fantomas/issues/2860)