diff --git a/CLAUDE.md b/CLAUDE.md
index c3ed670..4ad9b0b 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -1,50 +1,18 @@
 # CLAUDE.md
 
 このファイルは、このリポジトリでコードを操作する際のClaude Code（claude.ai/code）へのガイダンスを提供します。
+詳細なAPI仕様・コマンド・アーキテクチャはREADME.mdを参照。
 
-## コマンド
+## 主要ファイル
 
-### ビルド
-```bash
-npm run build
-```
-これはGruntタスクを実行し、開発タスク（jshint、karma、concat、jsbeautifier）を実行してからuglifyを実行します。
+- `src/datapage.ts` - メインのDataPageクラス実装
+- `spec/unit/datapage.spec.ts` - Vitestユニットテスト
+- `spec/e2e/` - PlaywrightによるブラウザE2Eテスト
+- `rollup.config.js` - Rollupビルド設定
+- `tsconfig.json` - TypeScript設定
 
-### テスト
-```bash
-npm test
-```
-Karmaを使用してテストスイートを実行します。
+## 開発ワークフロー
 
-### 開発コマンド
-```bash
-grunt dev
-```
-開発用タスクを実行します（jshint、karma、concat、jsbeautifier）。
-
-## プロジェクト構造
-
-このプロジェクトは**DataPage**というシンプルなページネーションライブラリです。
-
-### アーキテクチャ
-- **UMD（Universal Module Definition）パターン**を使用してNode.jsとブラウザ環境の両方をサポート
-- **単一クラス設計**：DataPageクラス1つでページネーション機能を提供
-- **Gruntベースのビルドシステム**：開発からディストリビューションまでの完全なビルドパイプライン
-
-### 主要ファイル
-- `src/datapage.js` - メインのDataPageクラス実装
-- `spec/datapage.spec.js` - Jasmineテストスイート
-- `Gruntfile.js` - ビルド設定のエントリポイント
-- `grunt/` - 各Gruntタスクの設定ファイル
-
-### 主要機能
-DataPageクラスは以下の機能を提供します：
-- ページネーション計算（総エントリ数、1ページあたりのエントリ数、現在のページ）
-- ページセット生成（表示するページ番号の配列）
-- 前後のページセット存在チェック
-- 現在のページでのエントリ数計算
-
-### 開発ワークフロー
-1. `src/datapage.js`でコードを変更
+1. `src/datapage.ts`でコードを変更
 2. `npm test`でテストを実行
-3. `npm run build`でビルドを実行し、`dist/`フォルダにビルド結果を生成
\ No newline at end of file
+3. `npm run build`でビルドを実行し、`dist/`フォルダにビルド結果を生成
diff --git a/package-lock.json b/package-lock.json
index 3c99aa4..a26efc6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -195,6 +195,7 @@
         }
       ],
       "license": "MIT",
+      "peer": true,
       "engines": {
         "node": ">=18"
       },
@@ -218,6 +219,7 @@
         }
       ],
       "license": "MIT",
+      "peer": true,
       "engines": {
         "node": ">=18"
       }
@@ -1069,9 +1071,9 @@
       "license": "MIT"
     },
     "node_modules/@rollup/rollup-android-arm-eabi": {
-      "version": "4.44.2",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-android-arm-eabi/-/rollup-android-arm-eabi-4.44.2.tgz",
-      "integrity": "sha512-g0dF8P1e2QYPOj1gu7s/3LVP6kze9A7m6x0BZ9iTdXK8N5c2V7cpBKHV3/9A4Zd8xxavdhK0t4PnqjkqVmUc9Q==",
+      "version": "4.59.0",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-android-arm-eabi/-/rollup-android-arm-eabi-4.59.0.tgz",
+      "integrity": "sha512-upnNBkA6ZH2VKGcBj9Fyl9IGNPULcjXRlg0LLeaioQWueH30p6IXtJEbKAgvyv+mJaMxSm1l6xwDXYjpEMiLMg==",
       "cpu": [
         "arm"
       ],
@@ -1083,9 +1085,9 @@
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     },
     "node_modules/@rollup/rollup-android-arm64": {
-      "version": "4.44.2",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-android-arm64/-/rollup-android-arm64-4.44.2.tgz",
-      "integrity": "sha512-Yt5MKrOosSbSaAK5Y4J+vSiID57sOvpBNBR6K7xAaQvk3MkcNVV0f9fE20T+41WYN8hDn6SGFlFrKudtx4EoxA==",
+      "version": "4.59.0",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-android-arm64/-/rollup-android-arm64-4.59.0.tgz",
+      "integrity": "sha512-hZ+Zxj3SySm4A/DylsDKZAeVg0mvi++0PYVceVyX7hemkw7OreKdCvW2oQ3T1FMZvCaQXqOTHb8qmBShoqk69Q==",
       "cpu": [
         "arm64"
       ],
@@ -1097,9 +1099,9 @@
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-      "version": "4.44.2",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-darwin-arm64/-/rollup-darwin-arm64-4.44.2.tgz",
-      "integrity": "sha512-EsnFot9ZieM35YNA26nhbLTJBHD0jTwWpPwmRVDzjylQT6gkar+zenfb8mHxWpRrbn+WytRRjE0WKsfaxBkVUA==",
+      "version": "4.59.0",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-darwin-arm64/-/rollup-darwin-arm64-4.59.0.tgz",
+      "integrity": "sha512-W2Psnbh1J8ZJw0xKAd8zdNgF9HRLkdWwwdWqubSVk0pUuQkoHnv7rx4GiF9rT4t5DIZGAsConRE3AxCdJ4m8rg==",
       "cpu": [
         "arm64"
       ],
@@ -1111,9 +1113,9 @@
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-      "version": "4.44.2",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-darwin-x64/-/rollup-darwin-x64-4.44.2.tgz",
-      "integrity": "sha512-dv/t1t1RkCvJdWWxQ2lWOO+b7cMsVw5YFaS04oHpZRWehI1h0fV1gF4wgGCTyQHHjJDfbNpwOi6PXEafRBBezw==",
+      "version": "4.59.0",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-darwin-x64/-/rollup-darwin-x64-4.59.0.tgz",
+      "integrity": "sha512-ZW2KkwlS4lwTv7ZVsYDiARfFCnSGhzYPdiOU4IM2fDbL+QGlyAbjgSFuqNRbSthybLbIJ915UtZBtmuLrQAT/w==",
       "cpu": [
         "x64"
       ],
@@ -1125,9 +1127,9 @@
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-      "version": "4.44.2",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-freebsd-arm64/-/rollup-freebsd-arm64-4.44.2.tgz",
-      "integrity": "sha512-W4tt4BLorKND4qeHElxDoim0+BsprFTwb+vriVQnFFtT/P6v/xO5I99xvYnVzKWrK6j7Hb0yp3x7V5LUbaeOMg==",
+      "version": "4.59.0",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-freebsd-arm64/-/rollup-freebsd-arm64-4.59.0.tgz",
+      "integrity": "sha512-EsKaJ5ytAu9jI3lonzn3BgG8iRBjV4LxZexygcQbpiU0wU0ATxhNVEpXKfUa0pS05gTcSDMKpn3Sx+QB9RlTTA==",
       "cpu": [
         "arm64"
       ],
@@ -1139,9 +1141,9 @@
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     "node_modules/@rollup/rollup-freebsd-x64": {
-      "version": "4.44.2",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-freebsd-x64/-/rollup-freebsd-x64-4.44.2.tgz",
-      "integrity": "sha512-tdT1PHopokkuBVyHjvYehnIe20fxibxFCEhQP/96MDSOcyjM/shlTkZZLOufV3qO6/FQOSiJTBebhVc12JyPTA==",
+      "version": "4.59.0",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-freebsd-x64/-/rollup-freebsd-x64-4.59.0.tgz",
+      "integrity": "sha512-d3DuZi2KzTMjImrxoHIAODUZYoUUMsuUiY4SRRcJy6NJoZ6iIqWnJu9IScV9jXysyGMVuW+KNzZvBLOcpdl3Vg==",
       "cpu": [
         "x64"
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@@ -1153,9 +1155,9 @@
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-      "version": "4.44.2",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-arm-gnueabihf/-/rollup-linux-arm-gnueabihf-4.44.2.tgz",
-      "integrity": "sha512-+xmiDGGaSfIIOXMzkhJ++Oa0Gwvl9oXUeIiwarsdRXSe27HUIvjbSIpPxvnNsRebsNdUo7uAiQVgBD1hVriwSQ==",
+      "version": "4.59.0",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-arm-gnueabihf/-/rollup-linux-arm-gnueabihf-4.59.0.tgz",
+      "integrity": "sha512-t4ONHboXi/3E0rT6OZl1pKbl2Vgxf9vJfWgmUoCEVQVxhW6Cw/c8I6hbbu7DAvgp82RKiH7TpLwxnJeKv2pbsw==",
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         "arm"
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@@ -1167,9 +1169,9 @@
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-      "version": "4.44.2",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-arm-musleabihf/-/rollup-linux-arm-musleabihf-4.44.2.tgz",
-      "integrity": "sha512-bDHvhzOfORk3wt8yxIra8N4k/N0MnKInCW5OGZaeDYa/hMrdPaJzo7CSkjKZqX4JFUWjUGm88lI6QJLCM7lDrA==",
+      "version": "4.59.0",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-arm-musleabihf/-/rollup-linux-arm-musleabihf-4.59.0.tgz",
+      "integrity": "sha512-CikFT7aYPA2ufMD086cVORBYGHffBo4K8MQ4uPS/ZnY54GKj36i196u8U+aDVT2LX4eSMbyHtyOh7D7Zvk2VvA==",
       "cpu": [
         "arm"
       ],
@@ -1181,9 +1183,9 @@
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-      "version": "4.44.2",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-arm64-gnu/-/rollup-linux-arm64-gnu-4.44.2.tgz",
-      "integrity": "sha512-NMsDEsDiYghTbeZWEGnNi4F0hSbGnsuOG+VnNvxkKg0IGDvFh7UVpM/14mnMwxRxUf9AdAVJgHPvKXf6FpMB7A==",
+      "version": "4.59.0",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-arm64-gnu/-/rollup-linux-arm64-gnu-4.59.0.tgz",
+      "integrity": "sha512-jYgUGk5aLd1nUb1CtQ8E+t5JhLc9x5WdBKew9ZgAXg7DBk0ZHErLHdXM24rfX+bKrFe+Xp5YuJo54I5HFjGDAA==",
       "cpu": [
         "arm64"
       ],
@@ -1195,9 +1197,9 @@
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-      "version": "4.44.2",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-arm64-musl/-/rollup-linux-arm64-musl-4.44.2.tgz",
-      "integrity": "sha512-lb5bxXnxXglVq+7imxykIp5xMq+idehfl+wOgiiix0191av84OqbjUED+PRC5OA8eFJYj5xAGcpAZ0pF2MnW+A==",
+      "version": "4.59.0",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-arm64-musl/-/rollup-linux-arm64-musl-4.59.0.tgz",
+      "integrity": "sha512-peZRVEdnFWZ5Bh2KeumKG9ty7aCXzzEsHShOZEFiCQlDEepP1dpUl/SrUNXNg13UmZl+gzVDPsiCwnV1uI0RUA==",
       "cpu": [
         "arm64"
       ],
@@ -1208,10 +1210,10 @@
         "linux"
       ]
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-    "node_modules/@rollup/rollup-linux-loongarch64-gnu": {
-      "version": "4.44.2",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-loongarch64-gnu/-/rollup-linux-loongarch64-gnu-4.44.2.tgz",
-      "integrity": "sha512-Yl5Rdpf9pIc4GW1PmkUGHdMtbx0fBLE1//SxDmuf3X0dUC57+zMepow2LK0V21661cjXdTn8hO2tXDdAWAqE5g==",
+    "node_modules/@rollup/rollup-linux-loong64-gnu": {
+      "version": "4.59.0",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-loong64-gnu/-/rollup-linux-loong64-gnu-4.59.0.tgz",
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       "cpu": [
         "loong64"
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@@ -1222,10 +1224,38 @@
         "linux"
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-    "node_modules/@rollup/rollup-linux-powerpc64le-gnu": {
-      "version": "4.44.2",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-powerpc64le-gnu/-/rollup-linux-powerpc64le-gnu-4.44.2.tgz",
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+    "node_modules/@rollup/rollup-linux-loong64-musl": {
+      "version": "4.59.0",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-loong64-musl/-/rollup-linux-loong64-musl-4.59.0.tgz",
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+      "cpu": [
+        "loong64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "linux"
+      ]
+    },
+    "node_modules/@rollup/rollup-linux-ppc64-gnu": {
+      "version": "4.59.0",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-ppc64-gnu/-/rollup-linux-ppc64-gnu-4.59.0.tgz",
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+      "cpu": [
+        "ppc64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "linux"
+      ]
+    },
+    "node_modules/@rollup/rollup-linux-ppc64-musl": {
+      "version": "4.59.0",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-ppc64-musl/-/rollup-linux-ppc64-musl-4.59.0.tgz",
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@@ -1237,9 +1267,9 @@
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-      "version": "4.44.2",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-riscv64-gnu/-/rollup-linux-riscv64-gnu-4.44.2.tgz",
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@@ -1251,9 +1281,9 @@
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-      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-riscv64-musl/-/rollup-linux-riscv64-musl-4.44.2.tgz",
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+      "version": "4.59.0",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-riscv64-musl/-/rollup-linux-riscv64-musl-4.59.0.tgz",
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         "riscv64"
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@@ -1265,9 +1295,9 @@
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     "node_modules/@rollup/rollup-linux-s390x-gnu": {
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-      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-s390x-gnu/-/rollup-linux-s390x-gnu-4.44.2.tgz",
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+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-s390x-gnu/-/rollup-linux-s390x-gnu-4.59.0.tgz",
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         "s390x"
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@@ -1279,9 +1309,9 @@
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-      "version": "4.44.2",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-x64-gnu/-/rollup-linux-x64-gnu-4.44.2.tgz",
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+      "version": "4.59.0",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-x64-gnu/-/rollup-linux-x64-gnu-4.59.0.tgz",
+      "integrity": "sha512-3AHmtQq/ppNuUspKAlvA8HtLybkDflkMuLK4DPo77DfthRb71V84/c4MlWJXixZz4uruIH4uaa07IqoAkG64fg==",
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         "x64"
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@@ -1293,9 +1323,9 @@
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     "node_modules/@rollup/rollup-linux-x64-musl": {
-      "version": "4.44.2",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-x64-musl/-/rollup-linux-x64-musl-4.44.2.tgz",
-      "integrity": "sha512-3D3OB1vSSBXmkGEZR27uiMRNiwN08/RVAcBKwhUYPaiZ8bcvdeEwWPvbnXvvXHY+A/7xluzcN+kaiOFNiOZwWg==",
+      "version": "4.59.0",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-linux-x64-musl/-/rollup-linux-x64-musl-4.59.0.tgz",
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       "cpu": [
         "x64"
       ],
@@ -1306,10 +1336,38 @@
         "linux"
       ]
     },
+    "node_modules/@rollup/rollup-openbsd-x64": {
+      "version": "4.59.0",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-openbsd-x64/-/rollup-openbsd-x64-4.59.0.tgz",
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+      "cpu": [
+        "x64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "openbsd"
+      ]
+    },
+    "node_modules/@rollup/rollup-openharmony-arm64": {
+      "version": "4.59.0",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-openharmony-arm64/-/rollup-openharmony-arm64-4.59.0.tgz",
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+      "cpu": [
+        "arm64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "openharmony"
+      ]
+    },
     "node_modules/@rollup/rollup-win32-arm64-msvc": {
-      "version": "4.44.2",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-win32-arm64-msvc/-/rollup-win32-arm64-msvc-4.44.2.tgz",
-      "integrity": "sha512-VfU0fsMK+rwdK8mwODqYeM2hDrF2WiHaSmCBrS7gColkQft95/8tphyzv2EupVxn3iE0FI78wzffoULH1G+dkw==",
+      "version": "4.59.0",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-win32-arm64-msvc/-/rollup-win32-arm64-msvc-4.59.0.tgz",
+      "integrity": "sha512-V5B6mG7OrGTwnxaNUzZTDTjDS7F75PO1ae6MJYdiMu60sq0CqN5CVeVsbhPxalupvTX8gXVSU9gq+Rx1/hvu6A==",
       "cpu": [
         "arm64"
       ],
@@ -1321,9 +1379,9 @@
       ]
     },
     "node_modules/@rollup/rollup-win32-ia32-msvc": {
-      "version": "4.44.2",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-win32-ia32-msvc/-/rollup-win32-ia32-msvc-4.44.2.tgz",
-      "integrity": "sha512-+qMUrkbUurpE6DVRjiJCNGZBGo9xM4Y0FXU5cjgudWqIBWbcLkjE3XprJUsOFgC6xjBClwVa9k6O3A7K3vxb5Q==",
+      "version": "4.59.0",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-win32-ia32-msvc/-/rollup-win32-ia32-msvc-4.59.0.tgz",
+      "integrity": "sha512-UKFMHPuM9R0iBegwzKF4y0C4J9u8C6MEJgFuXTBerMk7EJ92GFVFYBfOZaSGLu6COf7FxpQNqhNS4c4icUPqxA==",
       "cpu": [
         "ia32"
       ],
@@ -1334,10 +1392,24 @@
         "win32"
       ]
     },
+    "node_modules/@rollup/rollup-win32-x64-gnu": {
+      "version": "4.59.0",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-win32-x64-gnu/-/rollup-win32-x64-gnu-4.59.0.tgz",
+      "integrity": "sha512-laBkYlSS1n2L8fSo1thDNGrCTQMmxjYY5G0WFWjFFYZkKPjsMBsgJfGf4TLxXrF6RyhI60L8TMOjBMvXiTcxeA==",
+      "cpu": [
+        "x64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "win32"
+      ]
+    },
     "node_modules/@rollup/rollup-win32-x64-msvc": {
-      "version": "4.44.2",
-      "resolved": "https://registry.npmjs.org/@rollup/rollup-win32-x64-msvc/-/rollup-win32-x64-msvc-4.44.2.tgz",
-      "integrity": "sha512-3+QZROYfJ25PDcxFF66UEk8jGWigHJeecZILvkPkyQN7oc5BvFo4YEXFkOs154j3FTMp9mn9Ky8RCOwastduEA==",
+      "version": "4.59.0",
+      "resolved": "https://registry.npmjs.org/@rollup/rollup-win32-x64-msvc/-/rollup-win32-x64-msvc-4.59.0.tgz",
+      "integrity": "sha512-2HRCml6OztYXyJXAvdDXPKcawukWY2GpR5/nxKp4iBgiO3wcoEGkAaqctIbZcNB6KlUQBIqt8VYkNSj2397EfA==",
       "cpu": [
         "x64"
       ],
@@ -1393,6 +1465,7 @@
       "integrity": "sha512-LtOrbvDf5ndC9Xi+4QZjVL0woFymF/xSTKZKPgrrl7H7XoeDvnD+E2IclKVDyaK9UM756W/3BXqSU+JEHopA9g==",
       "dev": true,
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "undici-types": "~7.8.0"
       }
@@ -1443,6 +1516,7 @@
       "integrity": "sha512-FuYgkHwZLuPbZjQHzJXrtXreJdFMKl16BFYyRrLxDhWr6Qr7Kbcu2s1Yhu8tsiMXw1S0W1pjfFfYEt+R604s+Q==",
       "dev": true,
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "@typescript-eslint/scope-manager": "8.36.0",
         "@typescript-eslint/types": "8.36.0",
@@ -1597,13 +1671,13 @@
       }
     },
     "node_modules/@typescript-eslint/typescript-estree/node_modules/minimatch": {
-      "version": "9.0.5",
-      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-9.0.5.tgz",
-      "integrity": "sha512-G6T0ZX48xgozx7587koeX9Ys2NYy6Gmv//P89sEte9V9whIapMNF4idKxnW2QtCcLiTWlb/wfCabAtAFWhhBow==",
+      "version": "9.0.9",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-9.0.9.tgz",
+      "integrity": "sha512-OBwBN9AL4dqmETlpS2zasx+vTeWclWzkblfZk7KTA5j3jeOONz/tRCnZomUyvNg83wL5Zv9Ss6HMJXAgL8R2Yg==",
       "dev": true,
       "license": "ISC",
       "dependencies": {
-        "brace-expansion": "^2.0.1"
+        "brace-expansion": "^2.0.2"
       },
       "engines": {
         "node": ">=16 || 14 >=14.17"
@@ -1803,6 +1877,7 @@
       "integrity": "sha512-NZyJarBfL7nWwIq+FDL6Zp/yHEhePMNnnJ0y3qfieCrmNvYct8uvtiV41UvlSe6apAfk0fY1FbWx+NwfmpvtTg==",
       "dev": true,
       "license": "MIT",
+      "peer": true,
       "bin": {
         "acorn": "bin/acorn"
       },
@@ -1831,9 +1906,9 @@
       }
     },
     "node_modules/ajv": {
-      "version": "6.12.6",
-      "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.12.6.tgz",
-      "integrity": "sha512-j3fVLgvTo527anyYyJOGTYJbG+vnnQYvE0m5mmkc1TK+nxAppkCLMIL0aZ4dblVCNoGShhm+kzE4ZUykBoMg4g==",
+      "version": "6.14.0",
+      "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.14.0.tgz",
+      "integrity": "sha512-IWrosm/yrn43eiKqkfkHis7QioDleaXQHdDVPKg0FSwwd/DuvyX79TZnFOnYpB7dcsFAMmtFztZuXPDvSePkFw==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
@@ -2246,6 +2321,7 @@
       "integrity": "sha512-zmxXPNMOXmwm9E0yQLi5uqXHs7uq2UIiqEKo3Gq+3fwo1XrJ+hijAZImyF7hclW3E6oHz43Yk3RP8at6OTKflQ==",
       "dev": true,
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "@eslint-community/eslint-utils": "^4.2.0",
         "@eslint-community/regexpp": "^4.12.1",
@@ -2929,6 +3005,7 @@
       "integrity": "sha512-Cvc9WUhxSMEo4McES3P7oK3QaXldCfNWp7pl2NNeiIFlCoLr3kfq9kb1fxftiwk1FLV7CvpvDfonxtzUDeSOPg==",
       "dev": true,
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "cssstyle": "^4.2.1",
         "data-urls": "^5.0.0",
@@ -3275,9 +3352,9 @@
       }
     },
     "node_modules/minimatch": {
-      "version": "3.1.2",
-      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.1.2.tgz",
-      "integrity": "sha512-J7p63hRiAjw1NDEww1W7i37+ByIrOWO5XQQAzZ3VOcL0PNybwpfmV/N05zFAzwQ9USyEcX6t3UO+K5aqBQOIHw==",
+      "version": "3.1.5",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.1.5.tgz",
+      "integrity": "sha512-VgjWUsnnT6n+NUk6eZq77zeFdpW2LWDzP6zFGrCbHXiYNul5Dzqk2HHQ5uFH2DNW5Xbp8+jVzaeNt94ssEEl4w==",
       "dev": true,
       "license": "ISC",
       "dependencies": {
@@ -3632,16 +3709,6 @@
       ],
       "license": "MIT"
     },
-    "node_modules/randombytes": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npmjs.org/randombytes/-/randombytes-2.1.0.tgz",
-      "integrity": "sha512-vYl3iOX+4CKUWuxGi9Ukhie6fsqXqS9FE2Zaic4tNFD2N2QQaXOMFbuKK4QmDHC0JO6B1Zp41J0LpT0oR68amQ==",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "safe-buffer": "^5.1.0"
-      }
-    },
     "node_modules/resolve": {
       "version": "1.22.10",
       "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.22.10.tgz",
@@ -3709,11 +3776,12 @@
       "license": "MIT"
     },
     "node_modules/rollup": {
-      "version": "4.44.2",
-      "resolved": "https://registry.npmjs.org/rollup/-/rollup-4.44.2.tgz",
-      "integrity": "sha512-PVoapzTwSEcelaWGth3uR66u7ZRo6qhPHc0f2uRO9fX6XDVNrIiGYS0Pj9+R8yIIYSD/mCx2b16Ws9itljKSPg==",
+      "version": "4.59.0",
+      "resolved": "https://registry.npmjs.org/rollup/-/rollup-4.59.0.tgz",
+      "integrity": "sha512-2oMpl67a3zCH9H79LeMcbDhXW/UmWG/y2zuqnF2jQq5uq9TbM9TVyXvA4+t+ne2IIkBdrLpAaRQAvo7YI/Yyeg==",
       "dev": true,
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "@types/estree": "1.0.8"
       },
@@ -3725,26 +3793,31 @@
         "npm": ">=8.0.0"
       },
       "optionalDependencies": {
-        "@rollup/rollup-android-arm-eabi": "4.44.2",
-        "@rollup/rollup-android-arm64": "4.44.2",
-        "@rollup/rollup-darwin-arm64": "4.44.2",
-        "@rollup/rollup-darwin-x64": "4.44.2",
-        "@rollup/rollup-freebsd-arm64": "4.44.2",
-        "@rollup/rollup-freebsd-x64": "4.44.2",
-        "@rollup/rollup-linux-arm-gnueabihf": "4.44.2",
-        "@rollup/rollup-linux-arm-musleabihf": "4.44.2",
-        "@rollup/rollup-linux-arm64-gnu": "4.44.2",
-        "@rollup/rollup-linux-arm64-musl": "4.44.2",
-        "@rollup/rollup-linux-loongarch64-gnu": "4.44.2",
-        "@rollup/rollup-linux-powerpc64le-gnu": "4.44.2",
-        "@rollup/rollup-linux-riscv64-gnu": "4.44.2",
-        "@rollup/rollup-linux-riscv64-musl": "4.44.2",
-        "@rollup/rollup-linux-s390x-gnu": "4.44.2",
-        "@rollup/rollup-linux-x64-gnu": "4.44.2",
-        "@rollup/rollup-linux-x64-musl": "4.44.2",
-        "@rollup/rollup-win32-arm64-msvc": "4.44.2",
-        "@rollup/rollup-win32-ia32-msvc": "4.44.2",
-        "@rollup/rollup-win32-x64-msvc": "4.44.2",
+        "@rollup/rollup-android-arm-eabi": "4.59.0",
+        "@rollup/rollup-android-arm64": "4.59.0",
+        "@rollup/rollup-darwin-arm64": "4.59.0",
+        "@rollup/rollup-darwin-x64": "4.59.0",
+        "@rollup/rollup-freebsd-arm64": "4.59.0",
+        "@rollup/rollup-freebsd-x64": "4.59.0",
+        "@rollup/rollup-linux-arm-gnueabihf": "4.59.0",
+        "@rollup/rollup-linux-arm-musleabihf": "4.59.0",
+        "@rollup/rollup-linux-arm64-gnu": "4.59.0",
+        "@rollup/rollup-linux-arm64-musl": "4.59.0",
+        "@rollup/rollup-linux-loong64-gnu": "4.59.0",
+        "@rollup/rollup-linux-loong64-musl": "4.59.0",
+        "@rollup/rollup-linux-ppc64-gnu": "4.59.0",
+        "@rollup/rollup-linux-ppc64-musl": "4.59.0",
+        "@rollup/rollup-linux-riscv64-gnu": "4.59.0",
+        "@rollup/rollup-linux-riscv64-musl": "4.59.0",
+        "@rollup/rollup-linux-s390x-gnu": "4.59.0",
+        "@rollup/rollup-linux-x64-gnu": "4.59.0",
+        "@rollup/rollup-linux-x64-musl": "4.59.0",
+        "@rollup/rollup-openbsd-x64": "4.59.0",
+        "@rollup/rollup-openharmony-arm64": "4.59.0",
+        "@rollup/rollup-win32-arm64-msvc": "4.59.0",
+        "@rollup/rollup-win32-ia32-msvc": "4.59.0",
+        "@rollup/rollup-win32-x64-gnu": "4.59.0",
+        "@rollup/rollup-win32-x64-msvc": "4.59.0",
         "fsevents": "~2.3.2"
       }
     },
@@ -3779,27 +3852,6 @@
         "queue-microtask": "^1.2.2"
       }
     },
-    "node_modules/safe-buffer": {
-      "version": "5.2.1",
-      "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.2.1.tgz",
-      "integrity": "sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ==",
-      "dev": true,
-      "funding": [
-        {
-          "type": "github",
-          "url": "https://github.com/sponsors/feross"
-        },
-        {
-          "type": "patreon",
-          "url": "https://www.patreon.com/feross"
-        },
-        {
-          "type": "consulting",
-          "url": "https://feross.org/support"
-        }
-      ],
-      "license": "MIT"
-    },
     "node_modules/safer-buffer": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz",
@@ -3834,13 +3886,13 @@
       }
     },
     "node_modules/serialize-javascript": {
-      "version": "6.0.2",
-      "resolved": "https://registry.npmjs.org/serialize-javascript/-/serialize-javascript-6.0.2.tgz",
-      "integrity": "sha512-Saa1xPByTTq2gdeFZYLLo+RFE35NHZkAbqZeWNd3BpzppeVisAqpDjcp8dyf6uIvEqJRd46jemmyA4iFIeVk8g==",
+      "version": "7.0.4",
+      "resolved": "https://registry.npmjs.org/serialize-javascript/-/serialize-javascript-7.0.4.tgz",
+      "integrity": "sha512-DuGdB+Po43Q5Jxwpzt1lhyFSYKryqoNjQSA9M92tyw0lyHIOur+XCalOUe0KTJpyqzT8+fQ5A0Jf7vCx/NKmIg==",
       "dev": true,
       "license": "BSD-3-Clause",
-      "dependencies": {
-        "randombytes": "^2.1.0"
+      "engines": {
+        "node": ">=20.0.0"
       }
     },
     "node_modules/shebang-command": {
@@ -4195,7 +4247,8 @@
       "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.8.1.tgz",
       "integrity": "sha512-oJFu94HQb+KVduSUQL7wnpmqnfmLsOA/nAh6b6EH0wCEoK0/mPeXU6c3wKDV83MkOuHPRHtSXKKU99IBazS/2w==",
       "dev": true,
-      "license": "0BSD"
+      "license": "0BSD",
+      "peer": true
     },
     "node_modules/type-check": {
       "version": "0.4.0",
@@ -4216,6 +4269,7 @@
       "integrity": "sha512-p1diW6TqL9L07nNxvRMM7hMMw4c5XOo/1ibL4aAIGmSAt9slTE1Xgw5KWuof2uTOvCg9BY7ZRi+GaF+7sfgPeQ==",
       "dev": true,
       "license": "Apache-2.0",
+      "peer": true,
       "bin": {
         "tsc": "bin/tsc",
         "tsserver": "bin/tsserver"
@@ -4247,6 +4301,7 @@
       "integrity": "sha512-ZWyE8YXEXqJrrSLvYgrRP7p62OziLW7xI5HYGWFzOvupfAlrLvURSzv/FyGyy0eidogEM3ujU+kUG1zuHgb6Ug==",
       "dev": true,
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "esbuild": "^0.25.0",
         "fdir": "^6.5.0",
@@ -4322,6 +4377,7 @@
       "integrity": "sha512-2Fqty3MM9CDwOVet/jaQalYlbcjATZwPYGcqpiYQqgQ/dLC7GuHdISKgTYIVF/kaishKxLzleKWWfbSDklyIKg==",
       "dev": true,
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "@vitest/expect": "4.0.10",
         "@vitest/mocker": "4.0.10",
diff --git a/package.json b/package.json
index 0702eac..3fe0ce6 100644
--- a/package.json
+++ b/package.json
@@ -78,6 +78,9 @@
     "pager",
     "page"
   ],
+  "overrides": {
+    "serialize-javascript": "^7.0.3"
+  },
   "lint-staged": {
     "*.{ts,js,cjs}": [
       "eslint --fix",
diff --git a/spec/e2e/umd-min.spec.js b/spec/e2e/umd-min.spec.js
new file mode 100644
index 0000000..89c2573
--- /dev/null
+++ b/spec/e2e/umd-min.spec.js
@@ -0,0 +1,115 @@
+// @ts-check
+import { test, expect } from '@playwright/test';
+
+test.describe('DataPage UMD Minified Build', () => {
+  test('should load and work correctly in minified UMD format', async ({
+    page,
+  }) => {
+    await page.goto('/spec/fixtures/umd-min-test.html');
+
+    await page.waitForFunction(
+      () => {
+        return window.getTestResults && window.getTestResults() !== null;
+      },
+      { timeout: 60000 }
+    );
+
+    const results = await page.evaluate(() => window.getTestResults());
+
+    expect(results).toBeTruthy();
+    expect(results.passed).toBeGreaterThan(0);
+    expect(results.passed).toBe(results.total);
+
+    const errorElements = await page.locator('.error').count();
+    expect(errorElements).toBe(0);
+
+    const hasDataPage = await page.evaluate(() => {
+      return typeof window.DataPage === 'function';
+    });
+    expect(hasDataPage).toBe(true);
+  });
+
+  test('should have all camelCase API methods available in minified UMD', async ({
+    page,
+  }) => {
+    await page.goto('/spec/fixtures/umd-min-test.html');
+
+    const methodTests = await page.evaluate(() => {
+      if (typeof window.DataPage !== 'function') {
+        return {
+          error: `DataPage is ${typeof window.DataPage}, not a function`,
+        };
+      }
+      const pager = new window.DataPage(100, 10, 1, 5);
+      const methods = [
+        'totalEntries',
+        'entriesPerPage',
+        'currentPage',
+        'entriesOnThisPage',
+        'firstPage',
+        'lastPage',
+        'first',
+        'last',
+        'previousPage',
+        'nextPage',
+        'pagesPerPageset',
+        'pageset',
+        'hasNextPageset',
+        'hasPreviousPageset',
+        'parseVal',
+        'parseUnsignedInt',
+      ];
+
+      return methods.map((method) => ({
+        method,
+        exists: typeof pager[method] === 'function',
+      }));
+    });
+
+    for (const methodTest of methodTests) {
+      expect(
+        methodTest.exists,
+        `Method ${methodTest.method} should exist`
+      ).toBe(true);
+    }
+  });
+
+  test('should produce identical results to non-minified UMD build', async ({
+    page,
+  }) => {
+    await page.goto('/spec/fixtures/umd-min-test.html');
+
+    const results = await page.evaluate(() => {
+      const pager = new window.DataPage(317, 15, 5, 5);
+      return {
+        totalEntries: pager.totalEntries(),
+        entriesPerPage: pager.entriesPerPage(),
+        currentPage: pager.currentPage(),
+        firstPage: pager.firstPage(),
+        lastPage: pager.lastPage(),
+        first: pager.first(),
+        last: pager.last(),
+        previousPage: pager.previousPage(),
+        nextPage: pager.nextPage(),
+        entriesOnThisPage: pager.entriesOnThisPage(),
+        pageset: pager.pageset(),
+        hasNextPageset: pager.hasNextPageset(),
+        hasPreviousPageset: pager.hasPreviousPageset(),
+      };
+    });
+
+    expect(results.totalEntries).toBe(317);
+    expect(results.entriesPerPage).toBe(15);
+    expect(results.currentPage).toBe(5);
+    expect(results.firstPage).toBe(1);
+    expect(results.lastPage).toBe(22);
+    expect(results.first).toBe(61);
+    expect(results.last).toBe(75);
+    expect(results.previousPage).toBe(4);
+    expect(results.nextPage).toBe(6);
+    expect(results.entriesOnThisPage).toBe(15);
+    expect(results.pageset).toEqual([3, 4, 5, 6, 7]);
+    expect(results.hasNextPageset).toBe(true);
+    expect(results.hasPreviousPageset).toBe(true);
+  });
+});
diff --git a/spec/fixtures/umd-min-test.html b/spec/fixtures/umd-min-test.html
new file mode 100644
index 0000000..204603f
--- /dev/null
+++ b/spec/fixtures/umd-min-test.html
@@ -0,0 +1,183 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>DataPage UMD Minified Test</title>
+  </head>
+  <body>
+    <h1>DataPage UMD Minified Test</h1>
+    <div id="results"></div>
+
+    <!-- Load UMD minified build -->
+    <script src="../../dist/datapage.min.js"></script>
+
+    <script>
+      // Test DataPage UMD minified version
+      function runTests() {
+        const results = document.getElementById('results');
+        const tests = [];
+
+        try {
+          // Test basic instantiation
+          const pager = new DataPage(100, 10, 1, 5);
+          tests.push({
+            name: 'Basic instantiation',
+            result: 'pass',
+            details: `totalEntries: ${pager.totalEntries()}, entriesPerPage: ${pager.entriesPerPage()}`,
+          });
+
+          // Test camelCase API methods
+          pager.currentPage(2);
+          tests.push({
+            name: 'camelCase API - currentPage',
+            result: pager.currentPage() === 2 ? 'pass' : 'fail',
+            details: `currentPage(): ${pager.currentPage()}`,
+          });
+
+          pager.totalEntries(200);
+          tests.push({
+            name: 'camelCase API - totalEntries',
+            result: pager.totalEntries() === 200 ? 'pass' : 'fail',
+            details: `totalEntries(): ${pager.totalEntries()}`,
+          });
+
+          pager.entriesPerPage(20);
+          tests.push({
+            name: 'camelCase API - entriesPerPage',
+            result: pager.entriesPerPage() === 20 ? 'pass' : 'fail',
+            details: `entriesPerPage(): ${pager.entriesPerPage()}`,
+          });
+
+          // Test pagination methods
+          tests.push({
+            name: 'firstPage method',
+            result: pager.firstPage() === 1 ? 'pass' : 'fail',
+            details: `firstPage(): ${pager.firstPage()}`,
+          });
+
+          tests.push({
+            name: 'lastPage method',
+            result: pager.lastPage() === 10 ? 'pass' : 'fail',
+            details: `lastPage(): ${pager.lastPage()}`,
+          });
+
+          // Test pageset functionality
+          const pageset = pager.pageset();
+          tests.push({
+            name: 'pageset method',
+            result:
+              Array.isArray(pageset) && pageset.length > 0 ? 'pass' : 'fail',
+            details: `pageset(): [${pageset.join(', ')}]`,
+          });
+
+          // Test boundary methods
+          tests.push({
+            name: 'previousPage method',
+            result: pager.previousPage() === 1 ? 'pass' : 'fail',
+            details: `previousPage(): ${pager.previousPage()}`,
+          });
+
+          tests.push({
+            name: 'nextPage method',
+            result: pager.nextPage() === 3 ? 'pass' : 'fail',
+            details: `nextPage(): ${pager.nextPage()}`,
+          });
+
+          // Test entry calculations
+          tests.push({
+            name: 'first entry calculation',
+            result: pager.first() === 21 ? 'pass' : 'fail',
+            details: `first(): ${pager.first()}`,
+          });
+
+          tests.push({
+            name: 'last entry calculation',
+            result: pager.last() === 40 ? 'pass' : 'fail',
+            details: `last(): ${pager.last()}`,
+          });
+
+          tests.push({
+            name: 'entriesOnThisPage calculation',
+            result: pager.entriesOnThisPage() === 20 ? 'pass' : 'fail',
+            details: `entriesOnThisPage(): ${pager.entriesOnThisPage()}`,
+          });
+
+          // Test hasNext/hasPrevious pageset
+          tests.push({
+            name: 'hasNextPageset method',
+            result:
+              typeof pager.hasNextPageset() === 'boolean' ? 'pass' : 'fail',
+            details: `hasNextPageset(): ${pager.hasNextPageset()}`,
+          });
+
+          tests.push({
+            name: 'hasPreviousPageset method',
+            result:
+              typeof pager.hasPreviousPageset() === 'boolean' ? 'pass' : 'fail',
+            details: `hasPreviousPageset(): ${pager.hasPreviousPageset()}`,
+          });
+        } catch (error) {
+          tests.push({
+            name: 'Error occurred',
+            result: 'error',
+            details: error.message,
+          });
+        }
+
+        // Display results
+        const passCount = tests.filter((t) => t.result === 'pass').length;
+        const totalCount = tests.length;
+
+        results.innerHTML = `
+                <h2>Test Results: ${passCount}/${totalCount} passed</h2>
+                <div id="test-summary" data-pass="${passCount}" data-total="${totalCount}"></div>
+                <ul>
+                    ${tests
+                      .map(
+                        (test) => `
+                        <li class="${test.result}">
+                            <strong>${test.name}</strong>: ${test.result}
+                            <br><small>${test.details}</small>
+                        </li>
+                    `
+                      )
+                      .join('')}
+                </ul>
+            `;
+      }
+
+      // Run tests when page loads
+      window.addEventListener('load', runTests);
+
+      // Expose for Playwright
+      window.getTestResults = function () {
+        const summary = document.getElementById('test-summary');
+        if (!summary) return null;
+        return {
+          passed: parseInt(summary.dataset.pass),
+          total: parseInt(summary.dataset.total),
+        };
+      };
+    </script>
+
+    <style>
+      body {
+        font-family: Arial, sans-serif;
+        margin: 20px;
+      }
+      .pass {
+        color: green;
+      }
+      .fail {
+        color: red;
+      }
+      .error {
+        color: orange;
+      }
+      li {
+        margin-bottom: 10px;
+      }
+    </style>
+  </body>
+</html>