Support VSCode Problems in Mix Tasks

2017-04-05
#elixir #vscode
snippets

Support VSCode Problems in Mix Tasks

Here’s a snippet of my tasks.json that supports mix dialyzer, mix test, and mix compile (as “build”, so you can use the “build” shortcut). It puts warnings and errors into the bottom left corner.

It picks up the file and line of the error, and allows you to quickly jump to the problem error. I would add support for credo, but I get that for free with the vscode-credo extension.

.vscode/tasks.jsontask json schema
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{
    "version": "0.1.0",
    "command": "mix",
    "isShellCommand": true,
    "showOutput": "always",
    "suppressTaskName": true,
    "tasks": [
        {
            "taskName": "dialyzer",
            "args": ["dialyzer"],
            "problemMatcher": [
                {
                    "owner": "elixir",
                    "fileLocation": ["relative", "${workspaceRoot}"],
                    "severity": "warning",
                    "pattern": [{
                        "regexp": "^warning: (.*)$",
                        "message": 1
                    }, {
                        "regexp": "^  (.*):(\\d+)$",
                        "file": 1,
                        "location": 2
                    }]
                }, {
                    "owner": "elixir",
                    "fileLocation": ["relative", "${workspaceRoot}"],
                    "severity": "error",
                    "pattern": {
                        "regexp": "^\\*\\* \\((\\w+)\\) (.*):(\\d+): (.*)$",
                        "file": 2,
                        "location": 3,
                        "message": 0
                    }
                }, {
                    "owner": "elixir",
                    "fileLocation": ["relative", "${workspaceRoot}"],
                    "severity": "error",
                    "pattern": {
                        "regexp": "^([^:]+):(\\d+): (.*)$",
                        "file": 1,
                        "location": 2,
                        "message": 3
                    }
                }
            ]
        }, {
            "taskName": "test",
            "args": ["test"],
            "problemMatcher": [
                {
                    "owner": "elixir",
                    "fileLocation": ["relative", "${workspaceRoot}"],
                    "severity": "warning",
                    "pattern": [{
                        "regexp": "^warning: (.*)$",
                        "message": 1
                    }, {
                        "regexp": "^  (.*):(\\d+)$",
                        "file": 1,
                        "location": 2
                    }]
                },
                {
                    "owner": "elixir",
                    "fileLocation": ["relative", "${workspaceRoot}"],
                    "severity": "error",
                    "pattern": {
                        "regexp": "^\\*\\* \\((\\w+)\\) (.*):(\\d+): (.*)$",
                        "file": 2,
                        "location": 3,
                        "message": 0
                    }
                },
                {
                    "owner": "elixir",
                    "fileLocation": ["relative", "${workspaceRoot}"],
                    "severity": "error",
                    "pattern": [{
                        "regexp": "^  \\d+\\) (.*)$",
                        "message": 1
                    },{
                        "regexp": "^     (.*):(\\d+)$",
                        "file": 1,
                        "location": 2
                    }]
                }
            ]
        },
        {
            "taskName": "build",
            "args": ["compile"],
            "problemMatcher": [
                {
                    "owner": "elixir",
                    "fileLocation": ["relative", "${workspaceRoot}"],
                    "severity": "warning",
                    "pattern": [{
                        "regexp": "^warning: (.*)$",
                        "message": 1
                    }, {
                        "regexp": "^  (.*):(\\d+)$",
                        "file": 1,
                        "location": 2
                    }]
                }, {
                    "owner": "elixir",
                    "fileLocation": ["relative", "${workspaceRoot}"],
                    "severity": "error",
                    "pattern": {
                        "regexp": "^\\*\\* \\((\\w+)\\) (.*):(\\d+): (.*)$",
                        "file": 2,
                        "location": 3,
                        "message": 0
                    }
                }
            ]
        }
    ]
}