chore: migrate to eslint v9 and use flat configs

Author: tutinoko2048

.eslintrc.json

@@ -1,3 +1,4 @@
 {
-  "git.branchProtection": ["main"]
+  "git.branchProtection": ["main"],
+  "eslint.useFlatConfig": true
 }

.vscode/settings.json

@@ -0,0 +1,59 @@
+// @ts-check
+import globals from 'globals';
+import eslintPlugin from '@eslint/js';
+import jsdocPlugin from 'eslint-plugin-jsdoc';
+// @ts-expect-error
+import importPlugin from 'eslint-plugin-import';
+
+/** @type {import('eslint').Linter.Config[]} */
+export default [
+  {
+    files: ['*.js', '*.d.ts']
+  },
+  {
+    ignores: ['scripts/util/secret.js'],
+  },
+  {
+    languageOptions: {
+      globals: {
+        ...globals.node
+      }
+    }
+  },
+  {
+    languageOptions: {
+      parserOptions: {
+        ecmaVersion: 13,
+        sourceType: 'module',
+        project: './tsconfig.json'
+      }
+    },
+  },
+  eslintPlugin.configs.recommended,
+  {
+    plugins: {
+      jsdoc: jsdocPlugin,
+      import: importPlugin
+    },
+    rules: {
+      'no-unused-vars': 'warn',
+      'no-empty': 'off',
+      'block-spacing': 'warn',
+      'arrow-spacing': 'warn',
+      'space-before-blocks': 'warn',
+      'keyword-spacing': 'warn',
+      'no-irregular-whitespace': 'off',
+      'no-class-assign': 'off',
+      'jsdoc/no-undefined-types': 1,
+      'import/no-unresolved': 'error',
+      'import/no-cycle': 'error',
+    },
+    settings: {
+      'import/resolver': {
+        node: {
+          extensions: ['.js', '.ts', '.d.ts']
+        }
+      }
+    }
+  },
+]

eslint.config.js

@@ -4,8 +4,9 @@
   "description": "Anti-cheat addon with ScriptAPI / For Multiplayer, Realms, Servers / Recommended Japanese",
   "main": "scripts/index.js",
   "typings": "scripts/types.d.ts",
+  "type": "module",
   "scripts": {
-    "lint": "eslint ./scripts --ext .js & tsc"
+    "lint": "eslint ./scripts & tsc"
   },
   "repository": {
     "type": "git",
@@ -18,11 +19,13 @@
   },
   "homepage": "https://github.com/tutinoko2048/TNAntiCheat/blob/main/README.md",
   "devDependencies": {
+    "@eslint/js": "^9.13.0",
     "@minecraft/server": "1.16.0-beta.1.21.40-stable",
     "@minecraft/server-ui": "1.4.0-beta.1.21.40-stable",
-    "eslint": "^8.56.0",
-    "eslint-plugin-import": "^2.29.1",
-    "eslint-plugin-jsdoc": "^46.8.2",
+    "@types/eslint": "^9.6.1",
+    "eslint": "^9.13.0",
+    "eslint-plugin-import": "^2.31.0",
+    "eslint-plugin-jsdoc": "^50.4.3",
     "typescript": "^5.3.3"
   },
   "overrides": {

package.json

@@ -280,7 +280,6 @@ export class Vec3 {
         const x = axis.x * Math.sin(halfAngle);
         const y = axis.y * Math.sin(halfAngle);
         const z = axis.z * Math.sin(halfAngle);
-        // eslint-disable-next-line 
         const v = this;
         // Rotate vector (v) using quaternion
         // Simplified direct computation reflecting quaternion rotation and its conjugate effect
@@ -507,7 +506,7 @@ export class Vec3 {
             const other = Vec3._from(x, y, z);
             return this.x === other.x && this.y === other.y && this.z === other.z;
         }
-        catch (e) {
+        catch {
             return false;
         }
     }