ci: fix quality checks and update ESLint configuration

Author: Dayclone

eslint.config.js

@@ -0,0 +1,19 @@
+import eslint from '@eslint/js';
+import tseslint from 'typescript-eslint';
+
+export default tseslint.config(
+  eslint.configs.recommended,
+  ...tseslint.configs.recommended,
+  {
+    rules: {
+      '@typescript-eslint/no-explicit-any': 'off',
+      '@typescript-eslint/no-unused-vars': ['warn', { argsIgnorePattern: '^_' }],
+      '@typescript-eslint/ban-ts-comment': 'off',
+      'no-empty': 'off',
+      'no-control-regex': 'off',
+    },
+  },
+  {
+    ignores: ['dist/**', 'node_modules/**', 'scripts/**'],
+  },
+);

package-lock.json

@@ -16,7 +16,7 @@
   "scripts": {
     "build": "tsc",
     "build:sea": "node scripts/build-sea.js",
-    "lint": "eslint . --ext .ts",
+    "lint": "eslint .",
     "type-check": "tsc --noEmit",
     "format:check": "prettier --check \"**/*.{ts,json,md}\"",
     "start": "node --no-deprecation --no-warnings dist/src/cli.js start",
@@ -48,6 +48,7 @@
     "update-notifier": "^7.3.1"
   },
   "devDependencies": {
+    "@eslint/js": "^9.39.2",
     "@types/eventsource": "^1.1.15",
     "@types/node": "^22.13.1",
     "@types/update-notifier": "^6.0.8",
@@ -58,6 +59,7 @@
     "prettier": "^3.8.1",
     "ts-node": "^10.9.2",
     "typescript": "^5.9.3",
+    "typescript-eslint": "^8.54.0",
     "vitest": "^4.0.18"
   },
   "overrides": {

package.json

@@ -8,19 +8,19 @@ const DISCORD_DEV_URL = 'https://discord.com/developers/applications';
 const BOT_PERMISSIONS = '2147534848';
 const BOT_SCOPES = 'bot applications.commands';
 
-function validateApplicationId(value: string): string | undefined {
+function validateApplicationId(value: string | undefined): string | undefined {
   if (!value) return 'Application ID is required';
   if (!/^\d{17,20}$/.test(value)) return 'Invalid format (should be 17-20 digits)';
   return undefined;
 }
 
-function validateToken(value: string): string | undefined {
+function validateToken(value: string | undefined): string | undefined {
   if (!value) return 'Bot token is required';
   if (value.length < 50) return 'Invalid token format (too short)';
   return undefined;
 }
 
-function validateGuildId(value: string): string | undefined {
+function validateGuildId(value: string | undefined): string | undefined {
   if (!value) return 'Guild ID is required';
   if (!/^\d{17,20}$/.test(value)) return 'Invalid format (should be 17-20 digits)';
   return undefined;