tsconfig.json

{
  "include": ["src"],
  "compilerOptions": {
    "allowJs": false,
    "allowSyntheticDefaultImports": true,
    "alwaysStrict": true,
    "declaration": true,
    "emitDecoratorMetadata": false,
    "esModuleInterop": true,
    "experimentalDecorators": false,
    "importHelpers": true,
    "jsx": "react-jsx",
    "lib": ["DOM", "ESNext", "DOM.Iterable"],
    "module": "ESNext",
    "moduleResolution": "Bundler",
    "skipLibCheck": true,
    "forceConsistentCasingInFileNames": true,
    "noEmit": true,
    "noFallthroughCasesInSwitch": false,
    "noImplicitAny": true,
    "noImplicitReturns": false,
    "noImplicitThis": true,
    "noUnusedLocals": true,
    "noUnusedParameters": false,
    "pretty": true,
    "resolveJsonModule": true,
    "sourceMap": true,
    "isolatedModules": true,
    "strict": true,
    "strictFunctionTypes": true,
    "strictNullChecks": true,
    "strictPropertyInitialization": true,
    "stripInternal": true,
    "target": "es2018"
  }
}