Add eslint as linter and add linter workflow

.github/workflows/lint.yml

@@ -0,0 +1,22 @@
+name: Lint Codebase
+
+on: [push]
+
+jobs:
+  eslint:
+    runs-on: node
+
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v3
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: 'latest'
+
+      - name: Install dependencies
+        run: npm install
+
+      - name: Run ESLint
+        run: npm run lint

eslint.config.mjs

@@ -0,0 +1,32 @@
+import jest from "eslint-plugin-jest";
+import globals from "globals";
+export default [{
+    plugins: {
+        jest,
+    },
+
+    languageOptions: {
+        globals: {
+            ...globals.jest,
+            ...jest.environments.globals.globals,
+        },
+    },
+
+    rules: {
+        "no-fallthrough": "error",
+        "no-case-declarations": "error",
+        "no-unused-vars": "warn"
+    },
+    
+},
+];
+
+
+
+
+// /** @type {import('eslint').Linter.Config[]} */
+// export default [
+//   {files: ["**/*.js"], languageOptions: {sourceType: "commonjs"}},
+//   {languageOptions: { globals: globals.node }},
+//   pluginJs.configs.recommended,
+// ];

package.json

@@ -11,7 +11,8 @@
     "sqlite3": "^5.1.6"
   },
   "scripts": {
-    "test": "jest"
+    "test": "jest",
+    "lint": "npx eslint ."
   },
   "repository": {
     "type": "git",
@@ -20,7 +21,11 @@
   "author": "SileNce5k",
   "license": "UNLICENSE",
   "devDependencies": {
+    "@eslint/js": "^9.14.0",
     "@types/jest": "^29.5.14",
+    "eslint": "^9.14.0",
+    "eslint-plugin-jest": "^28.8.3",
+    "globals": "^15.12.0",
     "jest": "^29.7.0"
   }
 }