TSLint formatter: json

Formats errors as simple JSON.

Sample Output

[
    {
        "endPosition": {
            "character": 13,
            "line": 0,
            "position": 13
        },
        "failure": "Missing semicolon",
        "fix": {
            "innerStart": 13,
            "innerLength": 0,
            "innerText": ";"
        },
        "name": "myFile.ts",
        "ruleName": "semicolon",
        "startPosition": {
            "character": 13,
            "line": 0,
            "position": 13
        }
    }
]