introduce biome instead of prettier and eslint.

.cspell.json

@@ -13,11 +13,13 @@
     "Ligh",
     "moize",
     "officedocument",
+    "OKUMURA",
     "openxmlformats",
     "pizzip",
     "rspack",
     "SUBTABLE",
-    "wordprocessingml"
+    "wordprocessingml",
+    "Yoshihiro"
   ],
-  "ignorePaths": [".env"]
+  "ignorePaths": [".env", "dist", "node_modules", "scripts", "plugin"]
 }

.prettierrc.json

@@ -1,8 +0,0 @@
-{
-  "$schema": "https://json.schemastore.org/prettierrc",
-  "semi": true,
-  "tabWidth": 2,
-  "singleQuote": true,
-  "printWidth": 120,
-  "trailingComma": "all"
-}

.vscode/extensions.json

@@ -1,6 +1,6 @@
 {
   "recommendations": [
-    "esbenp.prettier-vscode",
+    "biomejs.biome",
     "streetsidesoftware.code-spell-checker",
     "dbaeumer.vscode-eslint",
     "jawandarajbir.react-vscode-extension-pack"

.vscode/settings.json

@@ -1,39 +1,30 @@
 {
   "editor.formatOnSave": true,
   "editor.codeActionsOnSave": {
+    "quickfix.biome": "explicit",
     "source.organizeImports": "explicit"
   },
   "[javascript]": {
-    "editor.defaultFormatter": "esbenp.prettier-vscode"
+    "editor.defaultFormatter": "biomejs.biome"
   },
   "[javascriptreact]": {
-    "editor.defaultFormatter": "esbenp.prettier-vscode"
+    "editor.defaultFormatter": "biomejs.biome"
   },
   "[typescript]": {
-    "editor.defaultFormatter": "esbenp.prettier-vscode"
+    "editor.defaultFormatter": "biomejs.biome"
   },
   "[typescriptreact]": {
-    "editor.defaultFormatter": "esbenp.prettier-vscode"
+    "editor.defaultFormatter": "biomejs.biome"
-  },
-  "[html]": {
-    "editor.defaultFormatter": "esbenp.prettier-vscode"
-  },
-  "[css]": {
-    "editor.defaultFormatter": "esbenp.prettier-vscode"
-  },
-  "[json]": {
-    "editor.defaultFormatter": "esbenp.prettier-vscode"
-  },
-  "[jsonc]": {
-    "editor.defaultFormatter": "esbenp.prettier-vscode"
   },
+  // Extensions - Biome
+  // - see: biome.json
   // Exteions - cSpell
   // - see: .cspell.json
+  // Extensions - ESLint
+  "eslint.enable": false,
   // Extensions - HTML
   "html.format.wrapLineLength": 0,
-  // Extentions - Prettier
-  // - see: .prettierrc.json
   // Extentions - Typescript
   "javascript.updateImportsOnFileMove.enabled": "always",
-  "typescript.updateImportsOnFileMove.enabled": "always"
+  "typescript.updateImportsOnFileMove.enabled": "always",
 }

biome.json

@@ -0,0 +1,43 @@
+{
+  "$schema": "https://biomejs.dev/schemas/2.2.4/schema.json",
+  "vcs": {
+    "enabled": true,
+    "clientKind": "git",
+    "useIgnoreFile": true
+  },
+  "files": {
+    "ignoreUnknown": false,
+    "includes": ["src/**"]
+  },
+  "formatter": {
+    "enabled": true,
+    "formatWithErrors": false,
+    "indentStyle": "space",
+    "lineEnding": "lf",
+    "indentWidth": 2,
+    "lineWidth": 120,
+    "attributePosition": "auto"
+  },
+  "linter": {
+    "enabled": true,
+    "domains": {
+      "react": "recommended"
+    },
+    "rules": {
+      "recommended": true
+    }
+  },
+  "javascript": {
+    "formatter": {
+      "quoteStyle": "single"
+    }
+  },
+  "assist": {
+    "enabled": true,
+    "actions": {
+      "source": {
+        "organizeImports": "on"
+      }
+    }
+  }
+}

package.json

@@ -10,45 +10,46 @@
     "prebuild:prod": "npm run gen",
     "build": "cross-env NODE_ENV=development rspack build",
     "build:prod": "cross-env NODE_ENV=production rspack build",
-    "lint": "eslint src --ext .js,.jsx,.ts,.tsx",
+    "cspell": "cspell .",
+    "lint": "biome lint .",
+    "format": "biome check --write .",
     "upload": "env-cmd --silent kintone-plugin-uploader dist/plugin.zip --watch --waiting-dialog-ms 3000"
   },
   "dependencies": {
-    "@kintone/rest-api-client": "^5.7.4",
+    "@kintone/rest-api-client": "^5.7.5",
-    "angular-expressions": "^1.5.0",
+    "angular-expressions": "^1.5.1",
     "clsx": "^2.1.1",
-    "dayjs": "^1.11.13",
+    "dayjs": "^1.11.18",
-    "docxtemplater": "^3.65.1",
+    "docxtemplater": "^3.66.4",
     "file-saver": "^2.0.5",
-    "i18next": "^25.3.0",
+    "i18next": "^25.5.2",
     "moize": "^6.1.6",
     "pizzip": "^3.2.0",
-    "react": "^19.1.0",
+    "react": "^19.1.1",
-    "react-dom": "^19.1.0",
+    "react-dom": "^19.1.1",
     "react-error-boundary": "^6.0.0",
-    "react-i18next": "^15.6.0",
+    "react-i18next": "^16.0.0",
     "tiny-invariant": "^1.3.3"
   },
   "devDependencies": {
-    "@cybozu/eslint-config": "^24.0.0",
+    "@biomejs/biome": "^2.2.4",
-    "@kintone/dts-gen": "^8.1.2",
+    "@kintone/dts-gen": "^8.1.3",
     "@kintone/plugin-uploader": "^9.1.5",
     "@kintone/webpack-plugin-kintone-plugin": "^8.0.11",
-    "@rspack/cli": "^1.4.3",
+    "@rspack/cli": "^1.5.8",
-    "@rspack/core": "^1.4.3",
+    "@rspack/core": "^1.5.8",
     "@shin-chan/kypes": "^0.0.7",
     "@types/file-saver": "^2.0.7",
-    "@types/node": "^24.0.10",
+    "@types/node": "^24.6.0",
-    "@types/react": "^19.1.8",
+    "@types/react": "^19.1.16",
-    "@types/react-dom": "^19.1.6",
+    "@types/react-dom": "^19.1.9",
-    "cross-env": "^7.0.3",
+    "cross-env": "^10.1.0",
-    "env-cmd": "^10.1.0",
+    "cspell": "^9.2.1",
-    "eslint": "^9.30.1",
+    "env-cmd": "^11.0.0",
-    "eslint-plugin-react": "^7.37.5",
+    "globals": "^16.4.0",
-    "globals": "^16.3.0",
     "npm-run-all": "^4.1.5",
     "prettier": "^3.6.2",
     "ts-node": "^10.9.2",
-    "typescript": "^5.8.3"
+    "typescript": "^5.9.2"
   }
 }

src/common/DynamicPortal.tsx

@@ -1,5 +1,4 @@
 import React from 'react';
-
 import ReactDOM from 'react-dom';
 import invariant from 'tiny-invariant';
 
@@ -21,8 +20,7 @@ const DynamicPortal: React.FC<DynamicPortalProps> = (props) => {
         el.parentNode.removeChild(el);
       }
     };
-    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [el]);
-  }, []);
   return ReactDOM.createPortal(children, el);
 };
 export default DynamicPortal;

src/common/ErrorFallback.tsx

@@ -1,5 +1,5 @@
+// biome-ignore lint/style/useImportType: React is required in scope for the old JSX transform.
 import React from 'react';
-
 import KintonePluginAlert from './ui/KintonePluginAlert';
 
 interface Props {

src/common/Loading.tsx

@@ -1,5 +1,5 @@
+// biome-ignore lint/style/useImportType: React is required in scope for the old JSX transform.
 import React from 'react';
-
 import DynamicPortal from './DynamicPortal';
 
 import styles from './Loading.module.css';

src/common/kintoneLanguageDetector.ts

@@ -1,4 +1,4 @@
-import { LanguageDetectorModule } from 'i18next';
+import type { LanguageDetectorModule } from 'i18next';
 
 const KintoneLanguageDetector: LanguageDetectorModule = {
   type: 'languageDetector',

src/common/types.ts

@@ -1,4 +1,4 @@
-import { KintoneFormFieldProperty } from '@kintone/rest-api-client';
+import type { KintoneFormFieldProperty } from '@kintone/rest-api-client';
 
 export type KintoneFormFieldProperties = {
   [fieldCode: string]: KintoneFormFieldProperty.OneOf;

src/common/ui/KintonePluginAlert.tsx

@@ -1,6 +1,6 @@
-import React from 'react';
-
 import clsx from 'clsx';
+// biome-ignore lint/style/useImportType: React is required in scope for the old JSX transform.
+import React from 'react';
 
 export type KintonePluginAlertProps = React.PropsWithChildren<{
   className?: string;

src/common/ui/KintonePluginButton.tsx

@@ -1,6 +1,6 @@
-import React from 'react';
-
 import clsx from 'clsx';
+// biome-ignore lint/style/useImportType: React is required in scope for the old JSX transform.
+import React from 'react';
 
 export type KintonePluginButtonProps = React.PropsWithChildren<{
   className?: string;

src/common/ui/KintonePluginDesc.tsx

@@ -1,6 +1,6 @@
-import React from 'react';
-
 import clsx from 'clsx';
+// biome-ignore lint/style/useImportType: React is required in scope for the old JSX transform.
+import React from 'react';
 
 export type KintonePluginDescProps = React.PropsWithChildren<{
   className?: string;

src/common/ui/KintonePluginLabel.tsx

@@ -1,6 +1,6 @@
-import React from 'react';
-
 import clsx from 'clsx';
+// biome-ignore lint/style/useImportType: React is required in scope for the old JSX transform.
+import React from 'react';
 
 export type KintonePluginLabelProps = React.PropsWithChildren<{
   className?: string;

src/common/ui/KintonePluginRequire.tsx

@@ -1,6 +1,6 @@
-import React from 'react';
-
 import clsx from 'clsx';
+// biome-ignore lint/style/useImportType: React is required in scope for the old JSX transform.
+import React from 'react';
 
 export type KintonePluginRequire = React.PropsWithChildren<{
   className?: string;

src/common/ui/KintonePluginRow.tsx

@@ -1,6 +1,6 @@
-import React from 'react';
-
 import clsx from 'clsx';
+// biome-ignore lint/style/useImportType: React is required in scope for the old JSX transform.
+import React from 'react';
 
 export type KintonePluginRowProps = React.PropsWithChildren<{
   className?: string;

src/common/ui/KintonePluginSelect.tsx

@@ -1,6 +1,5 @@
-import React from 'react';
-
 import clsx from 'clsx';
+import React from 'react';
 
 export type KintonePluginSelectOptionData = {
   value: string;

src/common/ui/KintonePluginTitle.tsx

@@ -1,6 +1,5 @@
-import React from 'react';
-
 import clsx from 'clsx';
+import type React from 'react';
 
 export type KintonePluginTitleProps = React.PropsWithChildren<{
   className?: string;

src/config/ConfigApp.tsx

@@ -1,5 +1,4 @@
 import React from 'react';
-
 import { ErrorBoundary } from 'react-error-boundary';
 import ErrorFallback from '../common/ErrorFallback';
 import Loading from '../common/Loading';

src/config/Settings.tsx

@@ -1,18 +1,17 @@
-import React from 'react';
-
 import { KintoneRestAPIClient } from '@kintone/rest-api-client';
 import moize from 'moize';
+import React from 'react';
 import { useTranslation } from 'react-i18next';
 import invariant from 'tiny-invariant';
 import { naturalCompare } from '../common/stringUtils';
-import { KintoneFormFieldProperties } from '../common/types';
+import type { KintoneFormFieldProperties } from '../common/types';
 import KintonePluginAlert from '../common/ui/KintonePluginAlert';
 import KintonePluginButton from '../common/ui/KintonePluginButton';
 import KintonePluginDesc from '../common/ui/KintonePluginDesc';
 import KintonePluginLabel from '../common/ui/KintonePluginLabel';
 import KintonePluginRequire from '../common/ui/KintonePluginRequire';
 import KintonePluginRow from '../common/ui/KintonePluginRow';
-import KintonePluginSelect, { KintonePluginSelectOptionData } from '../common/ui/KintonePluginSelect';
+import KintonePluginSelect, { type KintonePluginSelectOptionData } from '../common/ui/KintonePluginSelect';
 import KintonePluginTitle from '../common/ui/KintonePluginTitle';
 
 import styles from './Settings.module.css';

src/config/index.tsx

@@ -1,5 +1,4 @@
 import React from 'react';
-
 import ReactDOM from 'react-dom/client';
 import invariant from 'tiny-invariant';
 import ConfigApp from './ConfigApp';

src/desktop/DesktopApp.tsx

@@ -1,5 +1,4 @@
 import React from 'react';
-
 import { ErrorBoundary } from 'react-error-boundary';
 import ErrorFallback from '../common/ErrorFallback';
 import Loading from '../common/Loading';

src/desktop/MenuPanel.tsx

@@ -1,17 +1,16 @@
-import React from 'react';
+import { type KintoneFormFieldProperty, KintoneRestAPIClient } from '@kintone/rest-api-client';
-
+import type { KintoneRecord } from '@shin-chan/kypes/types/page';
-import { KintoneFormFieldProperty, KintoneRestAPIClient } from '@kintone/rest-api-client';
-import { KintoneRecord } from '@shin-chan/kypes/types/page';
 import dayjs from 'dayjs';
 import Docxtemplater from 'docxtemplater';
 import expressionParser from 'docxtemplater/expressions';
 import { saveAs } from 'file-saver';
 import moize from 'moize';
 import PizZip from 'pizzip';
+import React from 'react';
 import { useTranslation } from 'react-i18next';
 import invariant from 'tiny-invariant';
 import { DOCX_CONTENT_TYPE } from '../common/constants';
-import { KintoneFormFieldProperties } from '../common/types';
+import type { KintoneFormFieldProperties } from '../common/types';
 import KintonePluginAlert from '../common/ui/KintonePluginAlert';
 import KintonePluginButton from '../common/ui/KintonePluginButton';
 
@@ -31,7 +30,7 @@ const cachedFormFieldsProperties = moize.promise(async (appId: number): Promise<
 });
 
 const formatNumberValue = (value: string, digit: boolean, scale?: number): string => {
-  if (value !== '' && !isNaN(Number(value))) {
+  if (value !== '' && !Number.isNaN(Number(value))) {
     const numberValue = Number(value);
     const options: Intl.NumberFormatOptions = {
       useGrouping: digit,
@@ -90,18 +89,18 @@ const formatCalculatedRecordValue = (
   } else if (format === 'DATETIME') {
     // "2025-05-30T00:00:00Z" -> "2025-05-30 9:00" (browser local timezone)
     const date = new Date(value);
-    invariant(!isNaN(date.getTime()), `Expected value to be a valid date string, but got ${value}`);
+    invariant(!Number.isNaN(date.getTime()), `Expected value to be a valid date string, but got ${value}`);
     formattedValue = dayjs(date).format('YYYY-MM-DD h:mm');
   } else if (format === 'DATE') {
     // "2025-05-30T00:00:00Z" -> "2025-05-30" (browser local timezone)
     const date = new Date(value);
-    invariant(!isNaN(date.getTime()), `Expected value to be a valid date string, but got ${value}`);
+    invariant(!Number.isNaN(date.getTime()), `Expected value to be a valid date string, but got ${value}`);
     formattedValue = dayjs(date).format('YYYY-MM-DD');
   } else if (format === 'TIME') {
     // "00:30" -> "0:30"
     const [hours, minutes] = value.split(':').map((v) => Number(v));
     invariant(
-      !isNaN(hours) && !isNaN(minutes),
+      !Number.isNaN(hours) && !Number.isNaN(minutes),
       `Expected hours and minutes to be numbers, but got hours: ${hours}, minutes: ${minutes}`,
     );
     formattedValue = `${hours}:${String(minutes).padStart(2, '0')}`;
@@ -109,7 +108,7 @@ const formatCalculatedRecordValue = (
     // "49:30" -> en:"49 hours 30 minutes", ja: "49時間30分"
     const [hours, minutes] = value.split(':').map((v) => Number(v));
     invariant(
-      !isNaN(hours) && !isNaN(minutes),
+      !Number.isNaN(hours) && !Number.isNaN(minutes),
       `Expected hours and minutes to be numbers, but got hours: ${hours}, minutes: ${minutes}`,
     );
     formattedValue = language === 'ja' ? `${hours}時間${minutes}分` : `${hours} hours ${minutes} minutes`;
@@ -117,7 +116,7 @@ const formatCalculatedRecordValue = (
     // "49:30" -> en: "2 days 1 hour 30 minutes", ja: "2日1時間30分
     const [hours, minutes] = value.split(':').map((v) => Number(v));
     invariant(
-      !isNaN(hours) && !isNaN(minutes),
+      !Number.isNaN(hours) && !Number.isNaN(minutes),
       `Expected hours and minutes to be numbers, but got hours: ${hours}, minutes: ${minutes}`,
     );
     const days = Math.floor(Number(hours) / 24);
@@ -140,6 +139,7 @@ const record2data = (
 ): TemplateData => {
   const data: TemplateData = {};
   for (const key in record) {
+    // biome-ignore lint/suspicious/noPrototypeBuiltins: avoid prototype pollution
     if (Object.prototype.hasOwnProperty.call(record, key) && Object.prototype.hasOwnProperty.call(properties, key)) {
       const item = record[key];
       const property = properties[key];

src/desktop/index.tsx

@@ -1,5 +1,4 @@
 import React from 'react';
-
 import ReactDOM from 'react-dom/client';
 import invariant from 'tiny-invariant';
 import DesktopApp from './DesktopApp';

tsconfig.json

@@ -19,7 +19,8 @@
     "noUnusedLocals": true,
     "noUnusedParameters": true
   },
-  "include": ["src/**/*", "./node_modules/@kintone/dts-gen/kintone.d.ts"],
+  "files": ["./node_modules/@kintone/dts-gen/kintone.d.ts"],
+  "include": ["src/**/*"],
   "ts-node": {
     "compilerOptions": {
       "module": "CommonJS"