tsconfig.json

{
  "compilerOptions": {
    "target": "es6",                       // Specify ECMAScript target version
    "module": "commonjs",                  // Specify module code generation
    "declaration": true,
    "rootDir": "./src",                    // Specify the root directory of input files
    "outDir": "./dist",                    // Redirect output structure to the directory
    "esModuleInterop": true,               // Enables emit interoperability between CommonJS and ES Modules
    "strict": true,                        // Enable all strict type-checking options
    "skipLibCheck": true,                  // Skip type checking of declaration files
    "forceConsistentCasingInFileNames": true // Disallow inconsistently-cased references to the same file.
  },
  "include": ["src/**/*"],                 // Specifies an array of filenames or patterns to include in the program
  "exclude": ["node_modules", "**/*.spec.ts"] // Specifies an array of filenames or patterns that should be skipped when resolving include.
}