tsconfig.json

{
  "compilerOptions": {
    "baseUrl": ".",
    "outDir": "build/dist",
    "module": "esnext",
    "target": "es2016",
    "lib": ["dom", "dom.iterable", "esnext", "es6", "es2015", "es2017"],
    "sourceMap": true,
    "allowJs": true,
    "jsx": "react-jsx",
    "strict": true,
    "useUnknownInCatchVariables": false,
    "moduleResolution": "node",
    "rootDir": "src",
    "forceConsistentCasingInFileNames": true,
    "noImplicitReturns": true,
    "noImplicitThis": true,
    "noImplicitAny": true,
    "strictNullChecks": true,
    "skipLibCheck": true,
    "suppressImplicitAnyIndexErrors": true,
    "noUnusedLocals": true,
    "esModuleInterop": false,
    "allowSyntheticDefaultImports": true,
    "resolveJsonModule": true,
    "isolatedModules": true,
    "noEmit": true,
    "noFallthroughCasesInSwitch": true
  },
  "include": ["src"],
  "exclude": ["src/setupTests.ts"]
}