tsconfig.json

{
  "compilerOptions": {
    "baseUrl": "src",
    /* Basic Options */
    "target": "es5",
    "module": "esnext",
    "allowJs": true,
    "jsx": "react-jsx",
    "sourceMap": true,
    "outDir": "./build",

    /* Strict Type-Checking Options */
    "strict": true,

    /* Module Resolution Options */
    "moduleResolution": "node",
    "esModuleInterop": true,

    /* Advanced Options */
    "skipLibCheck": true,
    "forceConsistentCasingInFileNames": true,

    "noImplicitAny": true,
    "allowSyntheticDefaultImports": true,
    "noFallthroughCasesInSwitch": true,
    "resolveJsonModule": true,
    "isolatedModules": true,
    "noEmit": false
  },
  "include": ["src"]
}