doneit-web/tsconfig.worker.json

{
    "extends": "./tsconfig.json",
    "compilerOptions": {
      "outDir": "./out-tsc/worker",
      "lib": [
        "es2018",
        "webworker"
      ],
      "types": []
    },
    "include": [
      "src/**/*.worker.ts"
    ]
  }