VS Code Karma Problem Matcher

    {
      "taskName": "test",
      "args": [],
      "isTestCommand": true,
      "problemMatcher": {
                "fileLocation": ["absolute"],
                "pattern": [
                    {
                        "regexp": "(Expected.+\\.)$",
                        "message": 1
                    },
                    {
                        "regexp": "\\s+at.+\\s\\((.*\\.js):(\\d+):(\\d+)\\)$",
                        "file": 1,
                        "line": 2,
                        "column": 3
                    }
                ]
            }
    }