tsconfig.json

{
  "compilerOptions": {
    // Enable latest features
    "lib": ["ESNext"],
    "target": "ESNext",
    "module": "ESNext",
    "moduleDetection": "force",
    "allowJs": true,

    // Output
    "outDir": "extension",
    "rootDir": ".",
    "sourceMap": true,
    "moduleResolution": "Bundler",
    "esModuleInterop": true,

    // Bundler mode
    "allowImportingTsExtensions": false,
    "noEmit": true,

    // Best practices
    "strict": true,
    "skipLibCheck": true,
    "noFallthroughCasesInSwitch": true,
    "forceConsistentCasingInFileNames": true,

    // Some stricter flags (disabled by default)
    "noUnusedLocals": true,
    "noImplicitReturns": true,
    "noImplicitOverride": true,
    "noPropertyAccessFromIndexSignature": false,

    "typeRoots": ["./node_modules/@types", "./src/types"],

    // Paths
    "baseUrl": "./src",
    "paths": {
      "@/*": ["*"]
    }
  },
  "include": ["src/**/*.ts", "tests/**/*.ts", "scripts/**/*.ts"],
  "exclude": ["node_modules", ".vscode", "dist", "extension"]
}