diff --git a/.gitpod.yml b/.gitpod.yml
index 58842dd..001d3f1 100644
--- a/.gitpod.yml
+++ b/.gitpod.yml
@@ -21,6 +21,8 @@ vscode:
         - eamodio.gitlens
         - github.vscode-pull-request-github
         - github.vscode-github-actions
+        - streetsidesoftware.code-spell-checker
+
 tasks:
     - init: pnpm i
       command: npm start
diff --git a/eslint.config.mjs b/eslint.config.mjs
index bb56c65..a1b5ad6 100644
--- a/eslint.config.mjs
+++ b/eslint.config.mjs
@@ -1,16 +1,18 @@
+import typescriptPlugin from 'typescript-eslint';
 import globals from 'globals';
+
 import js from '@eslint/js';
 import json from '@eslint/json';
 import markdown from '@eslint/markdown';
-import tseslint from 'typescript-eslint';
 
-import react from 'eslint-plugin-react';
 import eslintConfigPrettier from 'eslint-config-prettier';
+import react from 'eslint-plugin-react';
 import simpleImportSort from 'eslint-plugin-simple-import-sort';
 
 export default [
     // import sort
     {
+        files: ['**/*.{js,ts,jsx,tsx}'],
         plugins: {
             'simple-import-sort': simpleImportSort
         },
@@ -19,14 +21,14 @@ export default [
             'simple-import-sort/imports': 'error'
         }
     },
-    // typescript
+    // TypeScript
     {
         files: ['**/*.{ts,tsx}'],
         plugins: {
-            '@typescript-eslint': tseslint.plugin
+            '@typescript-eslint': typescriptPlugin.plugin
         }
     },
-    // js
+    // JavaScript
     {
         name: 'eslint/js',
         files: ['**/*.{js,ts,jsx,tsx}'],
@@ -36,7 +38,7 @@ export default [
             'consistent-return': 'error'
         }
     },
-    // react
+    // React
     {
         name: 'react-jsx',
         files: ['**/*.{js,ts,jsx,tsx}'],
@@ -62,7 +64,7 @@ export default [
         language: 'json/json',
         plugins: { json }
     },
-    // markdown
+    // MarkDown
     {
         files: ['**/*.md'],
         language: 'markdown/gfm',
diff --git a/package.json b/package.json
index 6704810..ea0db9e 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
         "echarts-jsx": "^1.2.1",
         "editorjs-html": "^3.4.3",
         "idea-react": "^2.0.0-rc.2",
-        "koajax": "^3.0.2",
+        "koajax": "^3.0.0",
         "lodash": "^4.17.21",
         "mobx": "^6.13.1",
         "mobx-github": "^0.3.2",
@@ -50,6 +50,7 @@
         "eslint-config-prettier": "^9.1.0",
         "eslint-plugin-react": "^7.35.0",
         "eslint-plugin-simple-import-sort": "^12.1.1",
+        "eslint-plugin-spellcheck": "^0.0.20",
         "globals": "^15.9.0",
         "husky": "^9.1.5",
         "lint-staged": "^15.2.9",
@@ -75,7 +76,7 @@
         "tabWidth": 4
     },
     "lint-staged": {
-        "*.{html,md,less,json,yml,js,ts,tsx}": [
+        "*.{html,md,less,json,yml,js,mjs,ts,tsx}": [
             "eslint --fix",
             "prettier --write"
         ]
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index ed7819d..66e6a16 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -48,7 +48,7 @@ importers:
         specifier: ^2.0.0-rc.2
         version: 2.0.0-rc.2(@types/react@18.3.5)(typescript@5.5.4)
       koajax:
-        specifier: ^3.0.2
+        specifier: ^3.0.0
         version: 3.0.2(typescript@5.5.4)
       lodash:
         specifier: ^4.17.21
@@ -141,6 +141,9 @@ importers:
       eslint-plugin-simple-import-sort:
         specifier: ^12.1.1
         version: 12.1.1(eslint@9.9.1)
+      eslint-plugin-spellcheck:
+        specifier: ^0.0.20
+        version: 0.0.20(eslint@9.9.1)
       globals:
         specifier: ^15.9.0
         version: 15.9.0
@@ -2335,6 +2338,11 @@ packages:
     peerDependencies:
       eslint: '>=5.0.0'
 
+  eslint-plugin-spellcheck@0.0.20:
+    resolution: {integrity: sha512-GJa6vgzWAYqe0elKADAsiBRrhvqBnKyt7tpFSqlCZJsK2W9+K80oMyHhKolA7vJ13H5RCGs5/KCN+mKUyKoAiA==}
+    peerDependencies:
+      eslint: '>=0.8.0'
+
   eslint-scope@8.0.2:
     resolution: {integrity: sha512-6E4xmrTw5wtxnLA5wYL3WDfhZ/1bUBGOXV0zQvVRDOtrR8D0p6W7fs3JweNYhwRYeGvd/1CKX2se0/2s7Q/nJA==}
     engines: {node: ^18.18.0 || ^20.9.0 || >=21.1.0}
@@ -2725,6 +2733,10 @@ packages:
   humanize-ms@1.2.1:
     resolution: {integrity: sha512-Fl70vYtsAFb/C06PTS9dZBo7ihau+Tu/DNCk/OyHhea07S+aeMWpFFkUaXRa8fI+ScZbEI8dfSxwY7gxZ9SAVQ==}
 
+  hunspell-spellchecker@1.0.2:
+    resolution: {integrity: sha512-4DwmFAvlz+ChsqLDsZT2cwBsYNXh+oWboemxXtafwKIyItq52xfR4e4kr017sLAoPaSYVofSOvPUfmOAhXyYvw==}
+    hasBin: true
+
   husky@9.1.5:
     resolution: {integrity: sha512-rowAVRUBfI0b4+niA4SJMhfQwc107VLkBUgEYYAOQAbqDCnra1nYh83hF/MDmhYs9t9n1E3DuKOrs2LYNC+0Ag==}
     engines: {node: '>=18'}
@@ -7624,6 +7636,13 @@ snapshots:
     dependencies:
       eslint: 9.9.1
 
+  eslint-plugin-spellcheck@0.0.20(eslint@9.9.1):
+    dependencies:
+      eslint: 9.9.1
+      globals: 13.24.0
+      hunspell-spellchecker: 1.0.2
+      lodash: 4.17.21
+
   eslint-scope@8.0.2:
     dependencies:
       esrecurse: 4.3.0
@@ -8108,6 +8127,8 @@ snapshots:
     dependencies:
       ms: 2.1.3
 
+  hunspell-spellchecker@1.0.2: {}
+
   husky@9.1.5: {}
 
   iconv-lite@0.4.24:
diff --git a/tsconfig.json b/tsconfig.json
index 9179e49..02bc40e 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -7,6 +7,7 @@
         "resolveJsonModule": true,
         "useDefineForClassFields": true,
         "lib": ["ES2023", "DOM"],
+        "checkJs": true,
         "skipLibCheck": true,
         "baseUrl": "./",
         "jsx": "react-jsx",
@@ -19,5 +20,5 @@
         "sourceMap": true,
         "outDir": "./dist/"
     },
-    "include": ["src/**/*"]
+    "include": ["src/**/*", "*.mjs"]
 }