tsconfig.json

{
  "compilerOptions": {
    "target": "ESNext",                              // Target the latest ECMAScript features
    "module": "ESNext",                              // Use ESNext module system suited for Bun
    "lib": ["ESNext", "DOM"],                        // Include ESNext and DOM libraries
    "moduleResolution": "node",                      // Resolve modules as Node.js does
    "esModuleInterop": true,                         // Allow default imports from CommonJS modules
    "forceConsistentCasingInFileNames": true,        // Enforce consistent casing in filenames
    "skipLibCheck": true,                            // Skip type checks for declaration files
    "strict": true,                                  // Enable all strict type-checking options
    "noImplicitAny": true,                           // Disallow `any` type unless explicitly used
    "strictNullChecks": true,                        // Enable strict null checks
    "strictFunctionTypes": true,                     // Enable strict checking of function types
    "strictBindCallApply": true,                     // Enable strict checking of `bind`, `call`, and `apply`
    "noImplicitThis": true,                          // Warn on `this` expressions with an implicit `any` type
    "alwaysStrict": true,                            // Parse in strict mode and emit `"use strict"` for each file
    "resolveJsonModule": true,                       // Allow importing .json files
    "isolatedModules": true,                         // Ensure each file can be transpiled without type information
    "outDir": "./dist",                              // Output directory for compiled files
    "rootDir": "./src",                              // Root directory of input files
    "allowJs": true,                                 // Allow JavaScript files to be compiled
    "checkJs": false,                                // Disable type checking for JavaScript files
    "baseUrl": "./",                                 // Base directory to resolve non-relative module names
    "paths": {
      "@models/*": ["src/models/*"],                 // Alias for models directory
      "@routes/*": ["src/routes/*"],                 // Alias for routes directory
      "@utils/*": ["src/utils/*"],                   // Alias for utils directory
      "@public/*": ["src/public/*"],                 // Alias for public assets
      "@middleware/*": ["src/middleware/*"]
    },
    "types": ["node", "express"],                    // Include Node.js and Express types
    "typeRoots": ["./node_modules/@types", "./src/@types"], // Specify custom type definitions
    "allowSyntheticDefaultImports": true             // Allow default imports from modules with no default export
  },
  "include": [
    "src/**/*.ts",                                   // Include all TypeScript files in src
    "src/**/*.d.ts",                                 // Include any custom type declaration files
    "src/**/*.js"                                    // Include JavaScript files if you plan to migrate them
  ],
  "exclude": [
    "node_modules",                                  // Exclude node_modules
    "dist"                                           // Exclude the build output directory
  ]
}