[
  { "file": "src/a.ts", "line": 12, "code": "TS2322", "message": "Type 'string' is not assignable to type 'number'." },
  { "file": "src/b.tsx", "line": 3, "code": "TS2304", "message": "Cannot find name 'foo'." },
  { "file": "src/long.ts", "line": 7, "code": "TS2345", "message": "Argument of type '{ a: string; }' is not assignable to parameter of type 'Opts'. Property 'b' is missing in type '{ a: string; }' but required in type 'Opts'." }
]