Parallelize reading files

src/index.ts

@@ -129,15 +129,17 @@ interface Reports {
 let reports: Reports = {};
 async function recurseDirectory(reports: Reports, path: string) {
   const dir = await readdir(path, { withFileTypes: true });
-  for (const file of dir) {
+  return await Promise.all(
+    dir.map(async (file) => {
       const filePath = join(path, file.name);
       if (file.isDirectory()) await recurseDirectory(reports, filePath);
       else {
-      if (!file.name.endsWith(".html")) continue;
+        if (!file.name.endsWith(".html")) return;
         const content = await readFile(filePath, "utf-8");
         reports[filePath] = await processFile(content);
       }
-  }
+    })
+  );
 }
 await recurseDirectory(reports, dirPath);
 const totalThings = Object.values(reports)