fix: use glob pattern in chokidar path

Author: solufa

src/index.ts

@@ -153,4 +153,5 @@ export default (configs?: PartialConfig) =>
     };
 
     writeFileSync(config.output, toOpenAPI({ input: config.input, template }), 'utf8');
+    console.log(`${config.output} was built successfully.`);
   });

src/watchIndexFiles.ts

@@ -2,6 +2,6 @@ import chokidar from 'chokidar';
 
 export const watchIndexFiles = (dir: string, callback: () => void) => {
   chokidar
-    .watch(dir, { ignoreInitial: true, ignored: /^(?!.*\/index\.ts$).*$/ })
+    .watch(`${dir.replace(/\/$/, '')}/**/index.ts`, { ignoreInitial: true })
     .on('all', callback);
 };