update package.json and README.md

Author: ienaga

.eslintignore

@@ -1,9 +1,7 @@
 .github
 node_modules
 src
-.eslintignore
-.eslintrc.json
 .gitattributes
 .gitignore
-tsconfig.eslint.json
+eslint.config.mjs
 tsconfig.json

.eslintrc.json

@@ -7,21 +7,44 @@ Multi-platform Builder
 [![license](https://img.shields.io/github/license/Next2D/builder)](https://github.com/Next2D/builder/blob/main/LICENSE)
 
 [日本語]\
-Next2D Frameworkのマルチプラットフォームビルダー、Steam用のWindows、macOS、Linux、スマートフォン(iOS、Android)、Web（HTML）など、各種プラットフォームへの書き出しに対応
+1つのプロジェクトから多種多様なプラットフォーム向けのアプリケーションを作成するマルチプラットフォームビルダー。  
+
+* Steam用のアプリ：Steamに対応したWindows版、macOS版、Linux版のアプリケーションの書き出しが可能。
+* デスクトップアプリ：デスクトップ環境向けに、Windows、macOS、Linux向けのアプリケーションを出力できます。
+* スマートフォンアプリ：iOSおよびAndroidに対応したスマートフォン用アプリケーションとしての書き出しもサポート。
+* Web（HTML）コンテンツ：ブラウザ上で動作するHTML形式のコンテンツも簡単に生成可能。
+
+Next2D Frameworkを使えば、1つのソースコードから多様なデバイスやOSに最適化されたアプリケーションを効率的に開発・展開することができます。
 
 [English]\
-Multi-platform builder for Next2D Framework, export to various platforms including Windows, macOS, Linux, Smartphones (iOS, Android) and Web (HTML) for Steam
+Multi-platform builder to create applications for a wide variety of platforms from a single project.  
+
+* Apps for Steam: Allows export of Steam-compatible applications for Windows, macOS, and Linux.
+* Desktop apps: Export applications for Windows, macOS, and Linux for desktop environments.
+* Smartphone applications: Export as smartphone applications for iOS and Android is also supported.
+* Web (HTML) content: Content in HTML format that runs in a browser can also be easily generated.
+
+With Next2D Framework, you can efficiently develop and deploy applications optimized for diverse devices and operating systems from a single source code.
 
 ## Supported
 
-| platform | detail                   |
-|----------|--------------------------|
-| Windows  | Export an exe file       |
-| macOS    | Export dmg, app file     |
-| Linux    | Export deb file          |
-| iOS      | Implementing...          |
-| Android  | Implementing...          |
-| web      | Export minfy'd JS files  |
+| platform        | detail                   |
+|-----------------|--------------------------|
+| Windows         | Export an exe file       |
+| macOS           | Export dmg, app file     |
+| Linux           | Export deb file          |
+| Steam:Windows   | Export an exe file       |
+| Steam:macOS     | Export dmg, app file     |
+| Steam:Linux     | Export deb file          |
+| web             | Export minfy'd JS files  |
+
+### Scheduled introduction
+
+| platform        | 
+|-----------------|
+| iOS             |
+| Android         |
+| Nintendo Switch |
 
 ### build example.
 

.npmignore

@@ -0,0 +1,139 @@
+import unusedImports from "eslint-plugin-unused-imports";
+import globals from "globals";
+import tsParser from "@typescript-eslint/parser";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+import js from "@eslint/js";
+import { FlatCompat } from "@eslint/eslintrc";
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+const compat = new FlatCompat({
+    "baseDirectory": __dirname,
+    "recommendedConfig": js.configs.recommended,
+    "allConfig": js.configs.all
+});
+
+export default [{
+    "ignores": [
+        "**/node_modules/*",
+        "**/dist",
+        "**/build",
+        "**/json",
+        "**/@types",
+        "**/.github",
+        "**/*.test.ts"
+    ],
+}, ...compat.extends("plugin:@typescript-eslint/eslint-recommended"), {
+    "plugins": {
+        "unused-imports": unusedImports
+    },
+
+    "languageOptions": {
+        "globals": {
+            ...globals.browser
+        },
+
+        "parser": tsParser,
+        "ecmaVersion": "latest",
+        "sourceType": "module"
+    },
+
+    "rules": {
+        "no-unused-vars": "off",
+        "unused-imports/no-unused-imports": "error",
+
+        "unused-imports/no-unused-vars": ["warn", {
+            "vars": "all",
+            "varsIgnorePattern": "^_",
+            "args": "after-used",
+            "argsIgnorePattern": "^_"
+        }],
+
+        "no-var": "error",
+
+        "semi": ["error", "always", {
+            "omitLastInOneLineBlock": true
+        }],
+
+        "block-spacing": "error",
+
+        "indent": ["error", 4, {
+            "SwitchCase": 1
+        }],
+
+        "no-mixed-spaces-and-tabs": "error",
+
+        "no-multiple-empty-lines": ["error", {
+            "max": 1
+        }],
+
+        "no-trailing-spaces": "error",
+        "space-infix-ops": "error",
+        "dot-notation": "error",
+        "eqeqeq": "error",
+        "quotes": ["error", "double"],
+        "no-else-return": "error",
+        "no-loop-func": "error",
+        "arrow-parens": "error",
+        "arrow-spacing": "error",
+        "no-undef": "off",
+        "comma-dangle": "warn",
+        "no-use-before-define": "off",
+        "no-const-assign": "error",
+        "space-before-blocks": "error",
+        "no-unexpected-multiline": "error",
+        "object-curly-spacing": ["error", "always"],
+        "quote-props": ["error", "always"],
+
+        "max-len": ["error", {
+            "code": 200,
+            "ignoreStrings": true,
+            "ignoreComments": true,
+            "ignoreTemplateLiterals": true
+        }],
+
+        "no-debugger": "error",
+        "no-dupe-keys": "error",
+        "no-duplicate-case": "error",
+        "no-empty": "error",
+        "no-extra-parens": "error",
+        "no-func-assign": "error",
+        "no-irregular-whitespace": "error",
+        "no-sparse-arrays": "error",
+        "no-unreachable": "error",
+        "no-unsafe-negation": "error",
+        "use-isnan": "error",
+        "block-scoped-var": "error",
+        "no-caller": "error",
+        "curly": "error",
+        "no-case-declarations": "error",
+        "no-floating-decimal": "error",
+        "no-eq-null": "error",
+        "no-empty-function": "error",
+        "no-empty-pattern": "error",
+        "no-extend-native": "error",
+        "dot-location": ["error", "property"],
+        "no-global-assign": "error",
+        "no-implicit-globals": "error",
+        "no-invalid-this": "error",
+        "no-lone-blocks": "error",
+        "no-iterator": "error",
+        "no-new": "error",
+        "no-proto": "error",
+        "no-return-assign": "error",
+        "no-self-assign": "error",
+        "no-self-compare": "error",
+        "no-useless-concat": "error",
+        "no-useless-call": "error",
+        "no-useless-return": "error",
+        "no-unused-expressions": "error",
+        "no-class-assign": "error",
+        "no-sequences": "error",
+        "no-dupe-args": "error",
+        "no-extra-boolean-cast": "error",
+        "no-obj-calls": "error",
+        "no-console": "off",
+        "no-extra-semi": "warn"
+    }
+}];