tsconfig.json

{
  "compilerOptions": {
    // Compilation ?
    "target": "es5",
    "module": "esnext",
    "lib": [
      "es2015",
      "dom"
    ],
    "noEmit": true,
    "declaration": true,
    "emitDeclarationOnly": false,
    "outDir": "./dist",
    "sourceMap": true,
    // External libs
    "skipLibCheck": true,
    // React
    "jsx": "preserve",
    // JavaScript/other files
    "resolveJsonModule": true,
    "allowJs": true,
    "checkJs": false,
    // modules and files
    "moduleResolution": "node",
    "esModuleInterop": true,
    "isolatedModules": true,
    "forceConsistentCasingInFileNames": true,
    // TS checks
    "strict": true,
    "allowSyntheticDefaultImports": true,
    "noImplicitAny": true,
    "strictPropertyInitialization": true,
    "noUnusedLocals": false,
    "noUnusedParameters": false,
    "strictNullChecks": true,
    "strictFunctionTypes": true,
    "noImplicitThis": true,
    "alwaysStrict": true,
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": true,
  },
  "include": [
    "src"
  ]
}