tsconfig.json

{
  "compilerOptions": {
    // Environment setup & latest features
    "lib": ["ESNext"],
    "types": ["bun"],
    "outDir": "dist",
    "rootDir": ".",
    "target": "ESNext",
    "module": "Preserve",
    "moduleDetection": "force",
    "jsx": "react-jsx",
    "allowJs": true,

    // Bundler mode
    "moduleResolution": "bundler",
    "allowImportingTsExtensions": true,
    "verbatimModuleSyntax": true,
    "noEmit": true,

    // Path aliases
    "paths": {
      "@/*": ["./src/*"]
    },

    // Best practices
    "strict": true,
    "skipLibCheck": true,
    "noFallthroughCasesInSwitch": true,
    "noUncheckedIndexedAccess": true,
    "noImplicitOverride": true,

    // Stricter flags
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "noPropertyAccessFromIndexSignature": false,
    "exactOptionalPropertyTypes": false,
    "noImplicitReturns": true,
    "forceConsistentCasingInFileNames": true,
    "isolatedModules": true
  },
  "include": ["src/**/*", "tests/**/*", "scripts/**/*"],
  // The frontend is browser code with its own lib and globals; tsconfig.gui.json covers it.
  "exclude": ["node_modules", "dist", "src/gui/frontend"]
}