tsconfig.json

{
  "compilerOptions": {
    // Enable latest features
    "lib": ["ESNext", "DOM"],
    "target": "ESNext",
    "types": ["bun-types"],
    "module": "ESNext",
    "moduleDetection": "force",
    "jsx": "react-jsx",
    "allowJs": true,
    "checkJs": true,

    // Bundler mode
    "moduleResolution": "bundler",
    "allowImportingTsExtensions": true,
    "verbatimModuleSyntax": true,
    "emitDeclarationOnly": true,
    "declarationMap": true,
    "declaration": true,

    // Strictest features
    "strict": true,
    "allowUnusedLabels": false,
    "allowUnreachableCode": false,
    "exactOptionalPropertyTypes": true,
    "noFallthroughCasesInSwitch": true,
    "noImplicitOverride": true,
    "noImplicitReturns": true,
    "noPropertyAccessFromIndexSignature": true,
    "noUncheckedIndexedAccess": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "strictNullChecks": true,

    // Performance
    "isolatedModules": true,

    // Compatibility
    "esModuleInterop": true,
    "skipLibCheck": true
  },
  "include": ["src"],
  "$schema": "https://json.schemastore.org/tsconfig",
  "display": "Strictest",
  "_version": "2.0.0"
}