tsconfig.json

{
  "include": ["src"],
  "compilerOptions": {
    "alwaysStrict": true,
    "allowJs": true,
    "checkJs": true,
    "declaration": true,
    "emitDecoratorMetadata": true,
    "esModuleInterop": true,
    "experimentalDecorators": true,
    "forceConsistentCasingInFileNames": true,
    "inlineSourceMap": true,
    "inlineSources": true,
    "jsx": "react",
    "lib": ["DOM", "ES2019"],
    "module": "CommonJS",
    "noImplicitAny": true,
    "noImplicitThis": true,
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "outDir": "dist",
    "skipLibCheck": true,
    "strict": true,
    "strictBindCallApply": true,
    "strictFunctionTypes": true,
    "strictNullChecks": true,
    "strictPropertyInitialization": true,
    "target": "ES2019"
  }
}