tsconfig.json

{
  "compilerOptions": {
    "target": "ES5",
    "module": "ES6",
    "lib": [
      "DOM",
      "ESNext"
    ],
    "allowJs": true,
    // "checkJs": true,
    "jsx": "react",
    // "declaration": true,
    "sourceMap": true,
    "outDir": "./build",
    "rootDir": "./src",
    "removeComments": true,
    "noEmit": true,
    "isolatedModules": true,
    "strict": true,
    "noImplicitAny": true,
    "strictNullChecks": true,
    "strictFunctionTypes": true,
    "strictBindCallApply": true,
    // "strictPropertyInitialization": true,
    "noImplicitThis": true,
    "alwaysStrict": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": true,
    "noUncheckedIndexedAccess": true,
    "allowSyntheticDefaultImports": true,
    "esModuleInterop": true,
    "moduleResolution": "node",
    "resolveJsonModule": true,
    // "allowUmdGlobalAccess": true,
    "skipLibCheck": true,
    "forceConsistentCasingInFileNames": true
  },
  "include": [
    "src"
  ],
  "exclude": [
    "node_modules",
    "build",
    "public"
  ]
}