Downloads tools for .NET when trying to open launch.json for non-.NET project

Issue Description

We did a workshop on React development at my company today. As I wanted to create a new launch.json file to set up the Chrome debugger, the C# extension got activated and started downloading OmniSharp, the .NET Core debugger and the Razor Language Server.

Steps to Reproduce

1. Update the C# extension from an older version

   The extension has to download new versions of the .NET tools the next time.

2. Install the Chrome debugger extension

3. Start a new web project

4. Run the “Debug: Open launch.json” command and select Chrome

Expected Behavior

A newly generated launch.json should be opened.

Actual Behavior

The C# extension kicks in and starts downloading 150 MB worth of dependencies, even though my project has absolutely nothing to do with .NET.

Logs

OmniSharp log

Nothing to see here.

C# log

Note: The output is incomplete because I had to restart VS Code. My companies Wi-Fi stopped working for some reason.

Installing C# dependencies... Platform: darwin, x86_64

Downloading package ‘Razor Language Server (macOS / x64)’ (57227 KB)… Done! Installing package ‘Razor Language Server (macOS / x64)’

Finished

Environment information

VSCode version: 1.34.0 C# Extension: 1.19.1

Mono Information

OmniSharp using global mono :5.20.1

Dotnet Information

.NET Core SDK (reflecting any global.json): Version: 2.2.204 Commit: 8757db13ec

Runtime Environment: OS Name: Mac OS X OS Version: 10.14 OS Platform: Darwin RID: osx.10.14-x64 Base Path: /usr/local/dotnet/sdk/2.2.204/

Host (useful for support): Version: 2.2.5 Commit: 0a3c9209c0

.NET Core SDKs installed: 2.1.507 [/usr/local/dotnet/sdk] 2.1.604 [/usr/local/dotnet/sdk] 2.2.107 [/usr/local/dotnet/sdk] 2.2.204 [/usr/local/dotnet/sdk]

.NET Core runtimes installed: Microsoft.AspNetCore.All 2.1.11 [/usr/local/dotnet/shared/Microsoft.AspNetCore.All] Microsoft.AspNetCore.All 2.2.5 [/usr/local/dotnet/shared/Microsoft.AspNetCore.All] Microsoft.AspNetCore.App 2.1.11 [/usr/local/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 2.2.5 [/usr/local/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.NETCore.App 2.1.11 [/usr/local/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 2.2.5 [/usr/local/dotnet/shared/Microsoft.NETCore.App]

To install additional .NET Core runtimes or SDKs: https://aka.ms/dotnet-download

Visual Studio Code Extensions

Extension	Author	Version
ariake-dark	wart	0.2.2
backspace-plusplus	jrieken	0.0.17
bettergitcommits	davidedmiston	0.5.0
csharp	ms-vscode	1.19.1
debugger-for-chrome	msjsdiag	4.11.3
EditorConfig	EditorConfig	0.13.0
embrace	mycelo	1.0.0
Ionide-fsharp	Ionide	3.38.0
Ionide-Paket	Ionide	1.12.0
leaper	OnlyLys	0.5.3
mono-debug	ms-vscode	0.15.8
msbuild-project-tools	tintoy	0.2.54
nord-visual-studio-code	arcticicestudio	0.8.0
path-intellisense	christian-kohler	1.4.2
rewrap	stkb	1.9.1
spaces-inside-braces	AiryShift	0.4.0
subtle-brackets	rafamel	3.0.0
theme-light-vs-mac	jamiewest	0.4.5
vscode-cil-complete	wk-j	0.0.5
vscode-icon-theme	jtlowe	1.6.5
vscode-subword-navigation	ow	1.1.5

[dancojocaru2000]

Aaaaand it happened again.

Waiting for 2 minutes (and counting) to debug a Python script really feels unacceptable.

[kwikwag]

This is a blocking feature for me and will cause an uninstall of the extension. Together with https://github.com/OmniSharp/omnisharp-vscode/issues/3862 this is extremely annoying. There should be no blocking network communication in performing an action in VS code because of an extension. One can run this in the background the have launch.json include C# templates only when completed (together with a notification that this is happening).