Fantomas.Core
8.0.1
dotnet add package Fantomas.Core --version 8.0.1
NuGet\Install-Package Fantomas.Core -Version 8.0.1
<PackageReference Include="Fantomas.Core" Version="8.0.1" />
<PackageVersion Include="Fantomas.Core" Version="8.0.1" />
<PackageReference Include="Fantomas.Core" />
paket add Fantomas.Core --version 8.0.1
#r "nuget: Fantomas.Core, 8.0.1"
#:package Fantomas.Core@8.0.1
#addin nuget:?package=Fantomas.Core&version=8.0.1
#tool nuget:?package=Fantomas.Core&version=8.0.1
Fantomas

An opinionated F# source code formatter.
dotnet tool install fantomas
Documentation is available at https://fsprojects.github.io/fantomas/docs/index.html
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.
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 (>= 8.0.1)
- 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 |
|---|---|---|
| 8.0.1 | 29 | 9/21/2026 |
| 8.0.0 | 204 | 9/15/2026 |
| 8.0.0-beta-003 | 76 | 9/12/2026 |
| 8.0.0-beta-002 | 87 | 9/8/2026 |
| 8.0.0-beta-001 | 103 | 9/1/2026 |
| 8.0.0-alpha-026 | 152 | 8/29/2026 |
| 8.0.0-alpha-025 | 107 | 8/28/2026 |
| 8.0.0-alpha-024 | 93 | 8/28/2026 |
| 8.0.0-alpha-023 | 102 | 8/28/2026 |
| 8.0.0-alpha-022 | 112 | 8/27/2026 |
| 8.0.0-alpha-021 | 99 | 8/27/2026 |
| 8.0.0-alpha-020 | 104 | 8/27/2026 |
| 8.0.0-alpha-019 | 107 | 8/26/2026 |
| 8.0.0-alpha-018 | 104 | 8/26/2026 |
| 8.0.0-alpha-017 | 103 | 8/25/2026 |
| 8.0.0-alpha-016 | 104 | 8/25/2026 |
| 8.0.0-alpha-015 | 107 | 8/24/2026 |
| 8.0.0-alpha-014 | 112 | 8/20/2026 |
| 8.0.0-alpha-013 | 105 | 8/19/2026 |
| 7.0.6 | 2,178 | 8/19/2026 |
### Fixed
- Remove TailCall shim from Fantomas.FCS. [#3476](https://github.com/fsprojects/fantomas/pull/3476)
- Fantomas 8 with use bindings in fsx-file. A `use` at the top level of a script makes the parser warn that it is treated as `let`, and the check Fantomas runs over its own output refused the file on that warning. The warning is about the source as the author wrote it, not about anything the formatter changed, so it is now one of the warnings the check tolerates. [#3478](https://github.com/fsprojects/fantomas/issues/3478)
- Unexpected de-indent after trivia after expression. A comment at the end of a `match` that closes a computation expression, or a `let` body, pushed the closing brace and the next binding one level too far to the right. The unindent before the closing line was placed in front of the comment's newline, where the `match` still held the column it had claimed and restored its own indent on the way out, undoing the unindent. The newline now moves past those restores, so the line after the comment starts at the outer level. [#3481](https://github.com/fsprojects/fantomas/issues/3481)