add eslint config, fix some lints

Author: fdncred

client/src/extension.ts

@@ -1,4 +1,3 @@
-/* eslint-disable @typescript-eslint/no-var-requires */
 /* --------------------------------------------------------------------------------------------
  * Copyright (c) Microsoft Corporation. All rights reserved.
  * Licensed under the MIT License. See License.txt in the project root for license information.
@@ -42,7 +41,7 @@ function findNushellExecutable(): string | null {
 
     // Fall back to searching PATH for 'nu'
     return which.sync('nu', { nothrow: true });
-  } catch (error) {
+  } catch {
     return null;
   }
 }
@@ -184,6 +183,8 @@ export function activate(context: vscode.ExtensionContext) {
       provideTerminalProfile(
         token: vscode.CancellationToken,
       ): vscode.ProviderResult<vscode.TerminalProfile> {
+        // Consume token to satisfy no-unused-vars without changing behavior
+        void token;
         if (found_nushell_path == null) {
           console.log(
             'Nushell not found in env:PATH or any of the heuristic locations.',

eslint.config.js

@@ -0,0 +1,17 @@
+module.exports = [
+  {
+    files: ['**/*.ts'], // Apply to all TypeScript files
+    languageOptions: {
+      parser: require('@typescript-eslint/parser'), // Use TypeScript parser
+      sourceType: 'module',
+    },
+    plugins: {
+      '@typescript-eslint': require('@typescript-eslint/eslint-plugin'),
+    },
+    rules: {
+      // Add your preferred rules here, or start with recommended
+      '@typescript-eslint/no-unused-vars': 'warn',
+      // Add more rules as needed
+    },
+  },
+];

package-lock.json

@@ -173,11 +173,11 @@
     "@types/node": "24.3.0",
     "@types/tmp": "0.2.6",
     "@types/vscode": "^1.93.0",
-    "@typescript-eslint/eslint-plugin": "8.42.0",
-    "@typescript-eslint/parser": "8.42.0",
+    "@typescript-eslint/eslint-plugin": "^8.42.0",
+    "@typescript-eslint/parser": "^8.42.0",
     "@vscode/vsce": "3.6.0",
     "esbuild": "0.25.9",
-    "eslint": "9.34.0",
+    "eslint": "^9.34.0",
     "mocha": "11.7.2",
     "prettier": "3.6.2",
     "ts-loader": "9.5.4",