Run command on save feature

[trymeouteh]

The ability to run custom commands when you save specific file extensions in VSCode. Can be used to act as a "watch" feature when working with code to run bundlers when the user saves their code.

These commands that can be executed when a file is saved, can be done in the .vscode/settings.json file or in the global settings.json file. An indicator will be in the bottom tool bar which will indicate when a command is being executed and when the command has finished executing for builds that may take a few seconds.

EDIT:
I would recommend making this a standard is possible, by allowing global options in the global settings.json file and instead of having local setting in the .vscode/settings.json file to have local settings in a file named executeonsave.json or something like that which other IDEs can integrate the standard of looking for a executeonsave.json file and using it to know what commands to execute on save.

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Happy Coding!

[moritz-t-w]

This is in fact surprisingly difficult to do yourself.

• There are a few extensions that do this, such as File Watcher, however, they are quite tedious to set up. Here's one of File Watcher's sample configurations:

{
	"filewatcher.commands": [
		{
			"match": "\\.ts*",
			"isAsync": true,
			"cmd": "echo '${file} file content Changed'",
			"event": "onFileChange"
		}		
	]
}

• Alternatively, there are programs, such as fswatch. However, I just found out that it is currently broken Excclusion / Inclusion filters do not seem to work on Linux emcrisostomo/fswatch#247.
• Since fswatch can't be used with file extension filtering, You'll need to use a platform specific tool, such as inotifywait. However, these tend to be more bare bones, requiring you to do more work. Here's a solution by Denilson Sá Maia on the Super User StackExchange

inotifywait -e close_write,moved_to,create -m . |
while read -r directory events filename; do
  if [ "$filename" = "myfile.py" ]; then
    ./myfile.py
  fi
done

[trymeouteh]

I would recommend making this a standard is possible, by allowing global options in the global settings.json file and instead of having local setting in the .vscode/settings.json file to have local settings in a file named executeonsave.json or something like that which other IDEs can integrate the standard of looking for a executeonsave.json file and using it to know what commands to execute on save.