Run task on save?

[glen-84]

I've written this task for sass-lint – is it possible to run it automatically when I save a *.scss file?

{
    "version": "0.1.0",
    "command": "sass-lint",
    "isShellCommand": true,
    "args": ["-c", "path/to/.sass-lint.yml", "-v", "${file}"],
    "showOutput": "silent",
    "problemMatcher": {
        "owner": "sass",
        "fileLocation": "absolute",
        "pattern": [
            {
                "regexp": "^([^\\s].*)$",
                "file": 1
            },
            {
                "regexp": "^\\s+(\\d+):(\\d+)\\s+(error|warning|info)\\s+(.*)\\s\\s+(.*)$",
                "line": 1,
                "column": 2,
                "severity": 3,
                "message": 4,
                "code": 5,
                "loop": true
            }
        ]
    }
}

[felixfbecker]

Thats what you would use watch tasks for

[Ciantic]

I don't agree watch is always a good choice, especially since if you have watch running you can't execute other tasks without terminating.

Also creating another process just for watching less, sass is a overkill, it would be a better if IDE could be made to trigger the task when certain filetype changed, like:

{
    "triggerOnSaving" : "*.sass",
    "args": ["-c", "path/to/.sass-lint.yml", "-v", "${file}"],
    ...
}

[domaa11]

This tool seem to do the trick: https://marketplace.visualstudio.com/items?itemName=emeraldwalk.RunOnSave

[Ciantic]

@domaa11 It does the trick, but one must duplicate all tasks to separate file. Maybe if it were rewritten to run tasks on saving it would do exactly that.

[dbaeumer]

We have plans to support running multiple tasks in parallel. So such a watch task would not blocking running other tasks anymore.

[dbaeumer]

Watching tasks should be implemented using watch support of exist task runners. Always starting a task on save is not very performant nor battery friendly.

With task 2.0.0 you can run multiple tasks in parallel. So I will close the issue.