diff --git a/tools/clean.js b/tools/clean.js
index c869447..ada9e9f 100644
--- a/tools/clean.js
+++ b/tools/clean.js
@@ -4,4 +4,4 @@
 
 import { rimraf } from 'rimraf';
 
-await rimraf(['cjs', 'esm', 'types']);
+await rimraf(['cjs', 'esm']);
diff --git a/tools/fix-types.js b/tools/fix-types.js
index b0d097f..486827c 100644
--- a/tools/fix-types.js
+++ b/tools/fix-types.js
@@ -8,32 +8,32 @@ import { readdir, rename } from 'node:fs/promises';
 
 /**
  * @function renameDts
- * @description Rename `.d.ts` files in a directory to a specified extension
- * @param {string} dir The target directory to process
- * @param {string} ext The new extension to replace `.d.ts`
+ * @description Rename `.d.ts` files in a directory to a specified extension.
+ * @param {string} dir The target directory to process.
+ * @param {string} ext The new extension to replace `.d.ts`.
  * @returns {Promise<void>}
  */
 async function renameDts(dir, ext) {
-  // Stack to manage directories
+  // Stack to manage directories.
   const stack = [dir];
 
   while (stack.length > 0) {
     const currentDir = stack.pop();
 
-    // Read items in the current directory
+    // Read items in the current directory.
     const items = await readdir(currentDir, { withFileTypes: true });
 
-    // Collect all tasks for the current directory
+    // Collect all tasks for the current directory.
     const tasks = items.map(async item => {
       const sourcePath = join(currentDir, item.name);
 
       if (item.isDirectory()) {
-        // If it's a directory, push it onto the stack
+        // If it's a directory, push it onto the stack.
         stack.push(sourcePath);
       } else if (item.isFile()) {
         const re = /\.d\.ts$/i;
 
-        // If the file matches `.d.ts`, rename it
+        // If the file matches `.d.ts`, rename it.
         if (re.test(sourcePath)) {
           const targetPath = sourcePath.replace(re, ext);
 
@@ -42,7 +42,7 @@ async function renameDts(dir, ext) {
       }
     });
 
-    // Process all tasks concurrently for the current directory
+    // Process all tasks concurrently for the current directory.
     await Promise.all(tasks);
   }
 }
diff --git a/tools/plugins/tree-shake.js b/tools/plugins/tree-shake.js
index d9f3d91..cbe7777 100644
--- a/tools/plugins/tree-shake.js
+++ b/tools/plugins/tree-shake.js
@@ -6,7 +6,7 @@ import MagicString from 'magic-string';
 
 /***
  * @function treeShake
- * @description Fixed tree shaking for typescript and rollup preserve modules
+ * @description Fixed tree shaking for typescript and rollup preserve modules.
  * @return {import('rollup').Plugin}
  */
 export default function treeShake() {
diff --git a/tools/rollup.base.js b/tools/rollup.base.js
index 508e8f1..76590da 100644
--- a/tools/rollup.base.js
+++ b/tools/rollup.base.js
@@ -10,9 +10,9 @@ import { createRequire, isBuiltin } from 'node:module';
 const pkg = createRequire(import.meta.url)('../package.json');
 
 const externals = [
-  // Dependencies
+  // Dependencies.
   ...Object.keys(pkg.dependencies || {}),
-  // Peer dependencies
+  // Peer dependencies.
   ...Object.keys(pkg.peerDependencies || {})
 ];
 
@@ -41,7 +41,7 @@ function env() {
 
 /**
  * @function rollup
- * @param {boolean} [esnext]
+ * @param {boolean} [esnext] Is esnext.
  * @return {import('rollup').RollupOptions}
  */
 export default function rollup(esnext) {