tsconfig.json

{
  "compilerOptions": {
    "target": "es5",
    "lib": [
      "dom",
      "dom.iterable",
      "esnext"
    ],
    "allowJs": true,
    "skipLibCheck": true,
    "esModuleInterop": true,
    "allowSyntheticDefaultImports": true,
    "strict": true,
    "forceConsistentCasingInFileNames": true,
    "noFallthroughCasesInSwitch": true,
    "module": "esnext",
    "moduleResolution": "node",
    "resolveJsonModule": true,
    "isolatedModules": true,
    "sourceMap": true,                                /* Create source map files for emitted JavaScript files. */
    "removeComments": true,                           /* Disable emitting comments. */
    "noEmit": true,
    "noEmitOnError": true,                            /* Disable emitting files if any type checking errors are reported. */
    "jsx": "react-jsx",
    "noUnusedLocals": true,                           /* Enable error reporting when local variables aren't read. */
    "noUnusedParameters": true,                       /* Raise an error when a function parameter isn't read. */
    "noImplicitReturns": true,                        /* Enable error reporting for codepaths that do not explicitly return in a function. */
  },
  "include": [
    "src"
  ]
}