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Ionide-VSCode: FSharp

Enhanced F# Language Features for Visual Studio Code

Part of the Ionide plugin suite.

Version Installs Join the chat at https://gitter.im/ionide/ionide-project

Getting Started

F# 4.0 needs to be installed on your system in order to use Ionide

For more detailed instructions on installing F# :

FSC (F# Compiler) and FSI/fsharpi on Mono (F# Interactive) need to be added to your system PATH. The default location on Windows is

  64-bit - C:\Program Files (x86)\Microsoft SDKs\F#\4.0\Framework\v4.0\
  32-bit - C:\Program Files\Microsoft SDKs\F#\4.0\Framework\v4.0

Add MSBUILD_PATH environment variable which points to the home of Microsoft Build Tools, e.g., MSBUILD_PATH = C:\Program Files (x86)\MSBuild\14.0\Bin.

Quick Install Guide

Windows

You can download F# 4.0 here for Windows

Install the Microsoft Build Tools 2015

If you use chocolatey, you can install all the pre-requisites easily:

choco install visualfsharptools -y
choco install microsoft-build-tools --version 14.0.25420.1 -y
choco install visualstudiocode -y
  • Recommended: dotnet CLI >= 2.0

Mono

  • Required: Mono >= 4.8
  • Recommended: Mono >= 5.2
  • Recommended: dotnet CLI >= 2.0

Features

  • Syntax highlighting
  • Auto completions
  • Error highlighting, error list, and quick fixes based on errors
  • Tooltips
  • Method parameter hints
  • Go to Definition
  • Peak Definition
  • Find all references
  • Highlighting usages
  • Rename
  • Show symbols in file
  • Find symbol in workspace
  • Show signature in status bar
  • Show signature as CodeLens / LineLens
  • Go to MSDN help
  • Add open NAMESPACE for symbol
  • Match case generator
  • Go to #load reference
  • Generate comment for the symbol
  • Integration with F# Interactive
  • Integration with Forge (Project scaffolding and modification)
  • Integration with FSharpLint (additional hints and quick fixes)
  • Integration with Expecto (lightweight F# test runner)
  • Integration with MsBuild (Build, Rebuild, Clean project)
  • Solution / project explorer

How to get logs for debugging / issue reporting

  1. Enable Logging in User settings with
// FSharp configuration
  // Set the verbosity for F# Language Service Output Channel
  "FSharp.logLanguageServiceRequestsOutputWindowLevel": "DEBUG",

  // Enable logging language service requests (FSAC)  to an output channel, the developer tools console, or both
  "FSharp.logLanguageServiceRequests": "both"
  1. Open the Output Panel and switch to the F# Language Service Channel
  2. Or Toggle Developer Tools (Help |> Toggle Developer Tools) and open the console tab

How to contribute

Imposter syndrome disclaimer: I want your help. No really, I do.

There might be a little voice inside that tells you you're not ready; that you need to do one more tutorial, or learn another framework, or write a few more blog posts before you can help me with this project.

I assure you, that's not the case.

This project has some clear Contribution Guidelines and expectations that you can read here.

The contribution guidelines outline the process that you'll need to follow to get a patch merged. By making expectations and process explicit, I hope it will make it easier for you to contribute.

And you don't just have to write code. You can help out by writing documentation, tests, or even by giving feedback about this work. (And yes, that includes giving feedback about the contribution guidelines.)

Thank you for contributing!

Contributing and copyright

The project is hosted on GitHub where you can report issues, fork the project and submit pull requests.

The library is available under MIT license, which allows modification and redistribution for both commercial and non-commercial purposes.