puppeteer/tsconfig.base.json

{
  "compilerOptions": {
    "allowJs": true,
    "alwaysStrict": true,
    "checkJs": true,
    "declaration": true,
    "declarationMap": true,
    "esModuleInterop": true,
    "moduleResolution": "node",
    "noFallthroughCasesInSwitch": true,
    "noImplicitAny": true,
    "noImplicitOverride": true,
    "noImplicitReturns": true,
    "noImplicitThis": true,
    "noPropertyAccessFromIndexSignature": true,
    "noUncheckedIndexedAccess": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "resolveJsonModule": true,
    "sourceMap": true,
    "strict": true,
    "strictBindCallApply": true,
    "strictFunctionTypes": true,
    "strictNullChecks": true,
    "strictPropertyInitialization": true,
    "target": "ES2019",
    "useUnknownInCatchVariables": true
  }
}