tsconfig.json

{
  "compilerOptions": {
    "allowJs": true,
    "allowSyntheticDefaultImports": true,
    "esModuleInterop": true,
    "forceConsistentCasingInFileNames": true,
    "isolatedModules": true,
    "jsx": "react-jsx",
    "lib": ["dom", "dom.iterable", "esnext"],
    "module": "ESNext",
    "moduleResolution": "node",
    "noEmit": true,
    "noFallthroughCasesInSwitch": true,
    "noImplicitAny": true,
    "noImplicitReturns": true,
    "resolveJsonModule": true,
    "skipLibCheck": true,
    "strict": true,
    "strictFunctionTypes": true,
    "strictNullChecks": true,
    "target": "ES2015"
  },
  "$schema": "https://json.schemastore.org/tsconfig",
  "display": "Recommended",
  "compileOnSave": true,
  "include": ["src/**/*"],
  "exclude": ["node_modules"]
}