tsconfig.json

{
  "$schema": "https://json.schemastore.org/tsconfig",
  "include": ["src/**/*"],
  "compilerOptions": {
    "outDir": "dist",

    // Recommended:
    // https://github.com/tsconfig/bases/blob/main/bases/recommended.json
    "strict": true,
    "esModuleInterop": true,
    "skipLibCheck": true,
    "forceConsistentCasingInFileNames": true,

    // Create React App:
    // https://github.com/tsconfig/bases/blob/main/bases/create-react-app.json
    "module": "esnext",
    "allowJs": true,
    // To provide backwards compatibility, Node.js allows you to import most CommonJS packages with a default import.
    // This flag tells TypeScript that it's okay to use import on CommonJS modules.
    "allowSyntheticDefaultImports": true,
    "isolatedModules": true,
    "jsx": "react-jsx",

    "moduleResolution": "node",
    "noFallthroughCasesInSwitch": true,

    // Sindre Sorhus
    // https://github.com/sindresorhus/tsconfig
    "target": "ES2020", // Node.js 14
    "lib": ["dom", "dom.iterable", "ES2020"],
    "resolveJsonModule": false, // ESM doesn't yet support JSON modules.
    "declaration": true,
    "pretty": true,
    "newLine": "lf",
    "stripInternal": true,
    "noUnusedLocals": true,
    "noEmitOnError": true,
    "useDefineForClassFields": true
  }
}