为什么 VS 代码中的这个问题匹配器不起作用?

Why doesn't this problemMatcher in VS code work?

为什么我的 problemMatcher 不起作用?我很确定正则表达式,但它没有报告任何问题,即使标准输出上有一些问题...

// the matcher
"problemMatcher": {
    "owner": "typescript",
    "fileLocation": ["relative", "${workspaceRoot}"],
    "pattern": {
        "regexp": "^TypeScript (warning|error): (.*)\((\d+),(\d+)\): (.*)$",
        "severity": 1,
        "file": 2,
        "line": 3,
        "column": 4,
        "message": 5
    }
}

//the browserify/tsify pipeline
browserify().add('main.ts')
  .plugin(tsify, { noImplicitAny: false, removeComments:true })
  .transform("babelify",{ extensions: ['.ts'], presets: ["es2015"]})
  .bundle()
  .on('error', function (error) { console.log(error.toString()); })
  .pipe(source('bundle.js'))
  .pipe(gulp.dest('www/js/dist/'));

//gulp sample output
[00:39:00] Starting 'ts-compile'...
TypeScript error: main.ts(118,30): Error TS2339: Property 'object' does not exist on type 'boolean'.
TypeScript error: main.ts(137,24): Error TS2339: Property 'object' does not exist on type 'boolean'.
TypeScript error: main.ts(507,44): Error TS2304: Cannot find name 'loading'.
[00:39:03] Finished 'ts-compile' after 2.98 s

我通过将 tasks.json 放入 .vscode 文件夹解决了这个问题。我最初以为 tasks.json 会像 tsconfig.json (project-root) 这样找到,但结果是错误的。