tsconfig.json

{
  "extends": "./node_modules/gts/tsconfig-google.json",
  "compilerOptions": {
    "lib": ["dom", "es2016"],
    "module": "esnext",
    /* Output options */
    "noEmit": true,
    /* Strict type-checking options */
    "allowJs": false,
    "strict": true,
    "noFallthroughCasesInSwitch": true,
    "noImplicitReturns": true,
    "noUnusedLocals": true,
    /* Module Options */
    "moduleResolution": "node",
    "esModuleInterop": false
  },
  "include": ["src/**/*.ts"]
}