Upgrade eslint (#3175)

* chore: 🤖 Upgrade eslint config for admin ui

* chore: 🤖 Fix eslint issues for admin

* chore: 🤖 Upgrade eslint config for desktop

* chore: 🤖 Fix linting errors in desktop

* chore: 🤖 Upgrade eslint for api addon

* chore: 🤖 Fix eslint issues in api addon

* chore: 🤖 Upgrade eslint for auth addon

* chore: 🤖 Fix eslint issues in auth addon

* chore: 🤖 Upgrade core eslint config

* chore: 🤖 Fix eslint issue for core addon

* chore: 🤖 Upgrade eslint config for rose addon

* chore: 🤖 Fix eslint issue for rose addon

* chore: 🤖 Upgrade e2e eslint config

* chore: 🤖 Fix eslint issues in e2e

* chore: 🤖 Fix CI linting issues

* chore: 🤖 Add back linting server files for the future

* chore: 🤖 Update qunit rules to use extends

addons/api/.eslintignore

@@ -1,14 +0,0 @@
-# unconventional js
-/blueprints/*/files/
-
-# compiled output
-/declarations/
-/dist/
-
-# misc
-/coverage/
-!.*
-.*/
-
-# ember-try
-/.node_modules.ember-try/

addons/api/.eslintrc.js

@@ -1,69 +0,0 @@
-/**
- * Copyright IBM Corp. 2021, 2026
- * SPDX-License-Identifier: BUSL-1.1
- */
-
-'use strict';
-
-module.exports = {
-  root: true,
-  parser: '@babel/eslint-parser',
-  parserOptions: {
-    ecmaVersion: 'latest',
-    sourceType: 'module',
-    // This is specific babel-config. If grows consider creating a babel config file
-    requireConfigFile: false,
-    babelOptions: {
-      plugins: [
-        ['@babel/plugin-proposal-decorators', { decoratorsBeforeExport: true }],
-      ],
-    },
-    // end of babel-config
-  },
-  plugins: ['ember'],
-  extends: ['eslint:recommended', 'plugin:ember/recommended', 'prettier'],
-  env: {
-    browser: true,
-  },
-  rules: {
-    curly: ['error', 'multi-line', 'consistent'],
-    'ember/no-get': 'off',
-    'ember/no-get-with-default': 'off',
-    'ember/no-computed-properties-in-native-classes': 'off',
-    'ember/no-assignment-of-untracked-properties-used-in-tracking-contexts':
-      'off',
-  },
-  overrides: [
-    // node files
-    {
-      files: [
-        './.eslintrc.js',
-        './.prettierrc.js',
-        './.template-lintrc.js',
-        './ember-cli-build.js',
-        './index.js',
-        './testem.js',
-        './blueprints/*/index.js',
-        './config/**/*.js',
-        './tests/dummy/config/**/*.js',
-        './broccoli-plugins/**/*.js',
-      ],
-      parserOptions: {
-        sourceType: 'script',
-      },
-      env: {
-        browser: false,
-        node: true,
-      },
-      extends: ['plugin:n/recommended'],
-    },
-    {
-      // test files
-      files: ['tests/**/*-test.{js,ts}'],
-      extends: ['plugin:qunit/recommended'],
-      rules: {
-        'qunit/require-expect': [2, 'except-simple'],
-      },
-    },
-  ],
-};

addons/api/addon/adapters/host-catalog.js

@@ -23,7 +23,7 @@ export default class HostCatalogAdapter extends ApplicationAdapter {
       try {
         const pluginName = snapshot.attr('plugin')?.name;
         if (pluginName) url = `${url}?plugin_name=${pluginName}`;
-      } catch (e) {
+      } catch {
         // Ignore any adapter errors here
       }
     }

addons/api/addon/adapters/session-recording.js

@@ -23,7 +23,7 @@ export default class SessionRecordingAdapter extends ApplicationAdapter {
     let method;
     try {
       method = snapshot?.adapterOptions?.method;
-    } catch (e) {
+    } catch {
       // Ignore any adapter errors here
     }
     if (method === 'download') {

addons/api/addon/adapters/storage-bucket.js

@@ -22,7 +22,7 @@ export default class StorageBucketAdapter extends ApplicationAdapter {
     let pluginName;
     try {
       pluginName = snapshot?.attr('plugin')?.name;
-    } catch (e) {
+    } catch {
       // Ignore any adapter errors here
     }
     if (requestType === 'createRecord' && pluginName) {

addons/api/addon/services/store.js

@@ -4,8 +4,6 @@
  */
 
 // Importing 'Store' from 'ember-data/store' to get default configuration automatically.
-// TODO: Remove eslint-disable after upgrading to eslint-plugin-ember >= v12.2.1
-// eslint-disable-next-line ember/use-ember-data-rfc-395-imports
 import Store from 'ember-data/store';
 import { CacheHandler } from '@ember-data/store';
 import RequestManager from '@ember-data/request';

addons/api/app/mirage/factories/role.js

@@ -25,7 +25,6 @@ export default factory.extend({
       'remove-principals',
       'set-grant-scopes',
     ],
-  // eslint-disable-next-line ember/avoid-leaking-state-in-ember-objects
   grant_strings: () => [
     'ids=*;action=*',
     'ids=*;type=host-catalog;actions=create,read',

addons/api/eslint.config.js

@@ -0,0 +1,91 @@
+/**
+ * Copyright IBM Corp. 2021, 2026
+ * SPDX-License-Identifier: BUSL-1.1
+ */
+
+'use strict';
+
+/* eslint-disable n/no-unpublished-require */
+const { defineConfig, globalIgnores } = require('eslint/config');
+const babelParser = require('@babel/eslint-parser');
+const js = require('@eslint/js');
+const eslintPluginEmberRecommended = require('eslint-plugin-ember/configs/recommended');
+const nPlugin = require('eslint-plugin-n');
+const qunitPlugin = require('eslint-plugin-qunit');
+const eslintConfigPrettier = require('eslint-config-prettier/flat');
+const globals = require('globals');
+
+module.exports = defineConfig([
+  js.configs.recommended,
+  ...eslintPluginEmberRecommended,
+  {
+    languageOptions: {
+      parser: babelParser,
+      parserOptions: {
+        ecmaVersion: 'latest',
+        sourceType: 'module',
+        requireConfigFile: false,
+        // This is specific babel-config. If it grows consider creating a babel config file
+        babelOptions: {
+          plugins: [
+            [
+              '@babel/plugin-proposal-decorators',
+              { decoratorsBeforeExport: true },
+            ],
+          ],
+        },
+        // end of babel-config
+      },
+      globals: {
+        ...globals.browser,
+      },
+    },
+    rules: {
+      curly: ['error', 'multi-line', 'consistent'],
+      'ember/no-get': 'off',
+      'ember/no-get-with-default': 'off',
+      'ember/no-computed-properties-in-native-classes': 'off',
+      'ember/no-assignment-of-untracked-properties-used-in-tracking-contexts':
+        'off',
+    },
+  },
+
+  // Node files configuration
+  {
+    files: [
+      'eslint.config.js',
+      '.prettierrc.js',
+      '.template-lintrc.js',
+      'ember-cli-build.js',
+      'index.js',
+      'testem.js',
+      'blueprints/*/index.js',
+      'config/**/*.js',
+      'tests/dummy/config/**/*.js',
+      'broccoli-plugins/**/*.js',
+    ],
+    plugins: { n: nPlugin },
+    extends: [nPlugin.configs['flat/recommended-script']],
+  },
+
+  // Test files configuration
+  {
+    files: ['tests/**/*-test.{js,ts}'],
+    extends: [
+      { ...qunitPlugin.configs.recommended, plugins: { qunit: qunitPlugin } },
+    ],
+    rules: {
+      'qunit/require-expect': [2, 'except-simple'],
+    },
+  },
+  // Prettier should be last
+  eslintConfigPrettier,
+  globalIgnores([
+    'blueprints/*/files/',
+    'declarations/',
+    'dist/',
+    'coverage/',
+    '**/.*/',
+    '.node_modules.ember-try/',
+  ]),
+]);

addons/api/package.json

@@ -72,11 +72,13 @@
     "ember-source-channel-url": "^3.0.0",
     "ember-template-lint": "^6.0.0",
     "ember-try": "^3.0.0",
-    "eslint": "^8.57.1",
-    "eslint-config-prettier": "^9.1.0",
-    "eslint-plugin-ember": "^12.2.1",
-    "eslint-plugin-n": "^16.6.2",
-    "eslint-plugin-qunit": "^8.1.2",
+    "eslint": "^9.18.0",
+    "eslint-config-prettier": "^10.1.8",
+    "eslint-plugin-ember": "^12.7.5",
+    "eslint-plugin-n": "^17.24.0",
+    "eslint-plugin-qunit": "^8.2.6",
+    "@eslint/js": "^9.18.0",
+    "globals": "^15.14.0",
     "loader.js": "^4.7.0",
     "prettier": "^3.3.3",
     "qunit": "^2.22.0",

addons/api/tests/unit/mixins/adapter-build-url-test.js

@@ -13,7 +13,7 @@ module('Unit | Mixin | build-url', function (hooks) {
   setupTest(hooks);
 
   test('it does not interfere with basic URLs', function (assert) {
-    /* eslint-disable-next-line ember/no-new-mixins, ember/no-classic-classes */
+    /* eslint-disable-next-line ember/no-new-mixins */
     const Adapter = RESTAdapter.extend(AdapterBuildURLMixin);
     this.owner.register('adapter:adapter', Adapter);
     const adapter = this.owner.lookup('adapter:adapter');

addons/api/tests/unit/models/group-test.js

@@ -47,7 +47,6 @@ module('Unit | Model | group', function (hooks) {
         attributes: {},
       },
     });
-    // eslint-disable-next-line no-self-assign
     group.member_ids = [...group.member_ids];
     assert.strictEqual(
       group.member_ids.length,

addons/api/tests/unit/models/target-test.js

@@ -268,7 +268,6 @@ module('Unit | Model | target', function (hooks) {
         attributes: {},
       },
     });
-    /* eslint-enable no-self-assign */
     assert.strictEqual(
       target.brokered_credential_source_ids.length,
       2,

addons/auth/.eslintignore

@@ -1,14 +0,0 @@
-# unconventional js
-/blueprints/*/files/
-
-# compiled output
-/declarations/
-/dist/
-
-# misc
-/coverage/
-!.*
-.*/
-
-# ember-try
-/.node_modules.ember-try/

addons/auth/.eslintrc.js

@@ -1,69 +0,0 @@
-/**
- * Copyright IBM Corp. 2021, 2026
- * SPDX-License-Identifier: BUSL-1.1
- */
-
-'use strict';
-
-module.exports = {
-  root: true,
-  parser: '@babel/eslint-parser',
-  parserOptions: {
-    ecmaVersion: 'latest',
-    sourceType: 'module',
-    // This is specific babel-config. If grows consider creating a babel config file
-    requireConfigFile: false,
-    babelOptions: {
-      plugins: [
-        ['@babel/plugin-proposal-decorators', { decoratorsBeforeExport: true }],
-      ],
-    },
-    // end of babel-config
-  },
-  plugins: ['ember'],
-  extends: ['eslint:recommended', 'plugin:ember/recommended', 'prettier'],
-  env: {
-    browser: true,
-  },
-  rules: {
-    curly: ['error', 'multi-line', 'consistent'],
-    'ember/no-get': 'off',
-    'ember/no-get-with-default': 'off',
-    'ember/no-computed-properties-in-native-classes': 'off',
-    'ember/no-assignment-of-untracked-properties-used-in-tracking-contexts':
-      'off',
-  },
-  overrides: [
-    // node files
-    {
-      files: [
-        './.eslintrc.js',
-        './.prettierrc.js',
-        './.stylelintrc.js',
-        './.template-lintrc.js',
-        './ember-cli-build.js',
-        './index.js',
-        './testem.js',
-        './blueprints/*/index.js',
-        './config/**/*.js',
-        './tests/dummy/config/**/*.js',
-      ],
-      parserOptions: {
-        sourceType: 'script',
-      },
-      env: {
-        browser: false,
-        node: true,
-      },
-      extends: ['plugin:n/recommended'],
-    },
-    {
-      // test files
-      files: ['tests/**/*-test.{js,ts}'],
-      extends: ['plugin:qunit/recommended'],
-      rules: {
-        'qunit/require-expect': [2, 'except-simple'],
-      },
-    },
-  ],
-};

addons/auth/eslint.config.js

@@ -0,0 +1,91 @@
+/**
+ * Copyright IBM Corp. 2021, 2026
+ * SPDX-License-Identifier: BUSL-1.1
+ */
+
+'use strict';
+
+/* eslint-disable n/no-unpublished-require */
+const { defineConfig, globalIgnores } = require('eslint/config');
+const babelParser = require('@babel/eslint-parser');
+const js = require('@eslint/js');
+const eslintPluginEmberRecommended = require('eslint-plugin-ember/configs/recommended');
+const nPlugin = require('eslint-plugin-n');
+const qunitPlugin = require('eslint-plugin-qunit');
+const eslintConfigPrettier = require('eslint-config-prettier/flat');
+const globals = require('globals');
+
+module.exports = defineConfig([
+  js.configs.recommended,
+  ...eslintPluginEmberRecommended,
+  {
+    languageOptions: {
+      parser: babelParser,
+      parserOptions: {
+        ecmaVersion: 'latest',
+        sourceType: 'module',
+        requireConfigFile: false,
+        // This is specific babel-config. If it grows consider creating a babel config file
+        babelOptions: {
+          plugins: [
+            [
+              '@babel/plugin-proposal-decorators',
+              { decoratorsBeforeExport: true },
+            ],
+          ],
+        },
+        // end of babel-config
+      },
+      globals: {
+        ...globals.browser,
+      },
+    },
+    rules: {
+      curly: ['error', 'multi-line', 'consistent'],
+      'ember/no-get': 'off',
+      'ember/no-get-with-default': 'off',
+      'ember/no-computed-properties-in-native-classes': 'off',
+      'ember/no-assignment-of-untracked-properties-used-in-tracking-contexts':
+        'off',
+    },
+  },
+
+  // Node files configuration
+  {
+    files: [
+      'eslint.config.js',
+      '.prettierrc.js',
+      '.stylelintrc.js',
+      '.template-lintrc.js',
+      'ember-cli-build.js',
+      'index.js',
+      'testem.js',
+      'blueprints/*/index.js',
+      'config/**/*.js',
+      'tests/dummy/config/**/*.js',
+    ],
+    plugins: { n: nPlugin },
+    extends: [nPlugin.configs['flat/recommended-script']],
+  },
+
+  // Test files configuration
+  {
+    files: ['tests/**/*-test.{js,ts}'],
+    extends: [
+      { ...qunitPlugin.configs.recommended, plugins: { qunit: qunitPlugin } },
+    ],
+    rules: {
+      'qunit/require-expect': [2, 'except-simple'],
+    },
+  },
+  // Prettier should be last
+  eslintConfigPrettier,
+  globalIgnores([
+    'blueprints/*/files/',
+    'declarations/',
+    'dist/',
+    'coverage/',
+    '**/.*/',
+    '.node_modules.ember-try/',
+  ]),
+]);

addons/auth/package.json

@@ -58,11 +58,13 @@
     "ember-source-channel-url": "^3.0.0",
     "ember-template-lint": "^6.0.0",
     "ember-try": "^3.0.0",
-    "eslint": "^8.57.1",
-    "eslint-config-prettier": "^9.1.0",
-    "eslint-plugin-ember": "^12.2.1",
-    "eslint-plugin-n": "^16.6.2",
-    "eslint-plugin-qunit": "^8.1.2",
+    "eslint": "^9.18.0",
+    "eslint-config-prettier": "^10.1.8",
+    "eslint-plugin-ember": "^12.7.5",
+    "eslint-plugin-n": "^17.24.0",
+    "eslint-plugin-qunit": "^8.2.6",
+    "@eslint/js": "^9.18.0",
+    "globals": "^15.14.0",
     "loader.js": "^4.7.0",
     "pretender": "^3.4.3",
     "prettier": "^3.3.3",

addons/auth/tests/unit/authenticators/base-test.js

@@ -68,7 +68,7 @@ module('Unit | Authenticator | base', function (hooks) {
     });
     try {
       await authenticator.restore(mockData);
-    } catch (e) {
+    } catch {
       assert.ok(true, 'restoration failed');
     }
   });
@@ -84,7 +84,7 @@ module('Unit | Authenticator | base', function (hooks) {
     });
     try {
       await authenticator.restore(mockData);
-    } catch (e) {
+    } catch {
       assert.ok(true, 'restoration failed');
     }
   });

addons/auth/tests/unit/authenticators/oidc-test.js

@@ -39,7 +39,7 @@ module('Unit | Authenticator | OIDC', function (hooks) {
     // Because assert.throws doesn't work with async errors/promise rejections
     try {
       await authenticator.startAuthentication();
-    } catch (e) {
+    } catch {
       assert.ok(true);
     }
   });

addons/core/.eslintignore

@@ -1,14 +0,0 @@
-# unconventional js
-/blueprints/*/files/
-
-# compiled output
-/declarations/
-/dist/
-
-# misc
-/coverage/
-!.*
-.*/
-
-# ember-try
-/.node_modules.ember-try/

addons/core/.eslintrc.js

@@ -1,68 +0,0 @@
-/**
- * Copyright IBM Corp. 2021, 2026
- * SPDX-License-Identifier: BUSL-1.1
- */
-
-'use strict';
-
-module.exports = {
-  root: true,
-  parser: '@babel/eslint-parser',
-  parserOptions: {
-    ecmaVersion: 'latest',
-    sourceType: 'module',
-    // This is specific babel-config. If grows consider creating a babel config file
-    requireConfigFile: false,
-    babelOptions: {
-      plugins: [
-        ['@babel/plugin-proposal-decorators', { decoratorsBeforeExport: true }],
-      ],
-    },
-    // end of babel-config
-  },
-  plugins: ['ember'],
-  extends: ['eslint:recommended', 'plugin:ember/recommended', 'prettier'],
-  env: {
-    browser: true,
-  },
-  rules: {
-    curly: ['error', 'multi-line', 'consistent'],
-    'ember/no-get': 'off',
-    'ember/no-get-with-default': 'off',
-    'ember/no-computed-properties-in-native-classes': 'off',
-    'ember/no-assignment-of-untracked-properties-used-in-tracking-contexts':
-      'off',
-  },
-  overrides: [
-    // node files
-    {
-      files: [
-        './.eslintrc.js',
-        './.prettierrc.js',
-        './.template-lintrc.js',
-        './ember-cli-build.js',
-        './index.js',
-        './testem.js',
-        './blueprints/*/index.js',
-        './config/**/*.js',
-        './tests/dummy/config/**/*.js',
-      ],
-      parserOptions: {
-        sourceType: 'script',
-      },
-      env: {
-        browser: false,
-        node: true,
-      },
-      extends: ['plugin:n/recommended'],
-    },
-    {
-      // Test files:
-      files: ['tests/**/*-test.{js,ts}'],
-      extends: ['plugin:qunit/recommended'],
-      rules: {
-        'qunit/require-expect': [2, 'except-simple'],
-      },
-    },
-  ],
-};

addons/core/addon/services/clock-tick.js

@@ -28,7 +28,6 @@ export default class ClockTickService extends Service {
    * Updates the value of `now` every `frequency` milliseconds.
    */
   _tick = task(async () => {
-    // eslint-disable-next-line no-constant-condition
     while (true) {
       await timeout(this.frequency);
       this.now = Date.now();

addons/core/eslint.config.js

@@ -0,0 +1,90 @@
+/**
+ * Copyright IBM Corp. 2021, 2026
+ * SPDX-License-Identifier: BUSL-1.1
+ */
+
+'use strict';
+
+/* eslint-disable n/no-unpublished-require */
+const { defineConfig, globalIgnores } = require('eslint/config');
+const babelParser = require('@babel/eslint-parser');
+const js = require('@eslint/js');
+const eslintPluginEmberRecommended = require('eslint-plugin-ember/configs/recommended');
+const nPlugin = require('eslint-plugin-n');
+const qunitPlugin = require('eslint-plugin-qunit');
+const eslintConfigPrettier = require('eslint-config-prettier/flat');
+const globals = require('globals');
+
+module.exports = defineConfig([
+  js.configs.recommended,
+  ...eslintPluginEmberRecommended,
+  {
+    languageOptions: {
+      parser: babelParser,
+      parserOptions: {
+        ecmaVersion: 'latest',
+        sourceType: 'module',
+        requireConfigFile: false,
+        // This is specific babel-config. If it grows consider creating a babel config file
+        babelOptions: {
+          plugins: [
+            [
+              '@babel/plugin-proposal-decorators',
+              { decoratorsBeforeExport: true },
+            ],
+          ],
+        },
+        // end of babel-config
+      },
+      globals: {
+        ...globals.browser,
+      },
+    },
+    rules: {
+      curly: ['error', 'multi-line', 'consistent'],
+      'ember/no-get': 'off',
+      'ember/no-get-with-default': 'off',
+      'ember/no-computed-properties-in-native-classes': 'off',
+      'ember/no-assignment-of-untracked-properties-used-in-tracking-contexts':
+        'off',
+    },
+  },
+
+  // Node files configuration
+  {
+    files: [
+      'eslint.config.js',
+      '.prettierrc.js',
+      '.template-lintrc.js',
+      'ember-cli-build.js',
+      'index.js',
+      'testem.js',
+      'blueprints/*/index.js',
+      'config/**/*.js',
+      'tests/dummy/config/**/*.js',
+    ],
+    plugins: { n: nPlugin },
+    extends: [nPlugin.configs['flat/recommended-script']],
+  },
+
+  // Test files configuration
+  {
+    files: ['tests/**/*-test.{js,ts}'],
+    extends: [
+      { ...qunitPlugin.configs.recommended, plugins: { qunit: qunitPlugin } },
+    ],
+    rules: {
+      'qunit/require-expect': [2, 'except-simple'],
+    },
+  },
+  // Prettier should be last
+  eslintConfigPrettier,
+  globalIgnores([
+    'blueprints/*/files/',
+    'declarations/',
+    'dist/',
+    'coverage/',
+    '**/.*/',
+    '.node_modules.ember-try/',
+  ]),
+]);

addons/core/package.json

@@ -77,11 +77,13 @@
     "ember-template-lint": "^6.0.0",
     "ember-template-lint-plugin-prettier": "^5.0.0",
     "ember-try": "^3.0.0",
-    "eslint": "^8.57.1",
-    "eslint-config-prettier": "^9.1.0",
-    "eslint-plugin-ember": "^12.2.1",
-    "eslint-plugin-n": "^16.6.2",
-    "eslint-plugin-qunit": "^8.1.2",
+    "eslint": "^9.18.0",
+    "eslint-config-prettier": "^10.1.8",
+    "eslint-plugin-ember": "^12.7.5",
+    "eslint-plugin-n": "^17.24.0",
+    "eslint-plugin-qunit": "^8.2.6",
+    "@eslint/js": "^9.18.0",
+    "globals": "^15.14.0",
     "js-bexpr": "hashicorp/js-bexpr#9b4a4b54d85eba67fdfc0990133d1518d890b1e1",
     "loader.js": "^4.7.0",
     "miragejs": "^0.1.48",
@@ -109,4 +111,4 @@
     "*.hbs": "ember-template-lint --fix",
     "*.{scss,yaml}": "prettier --write"
   }
-}
+}

addons/rose/.eslintignore

@@ -1,14 +0,0 @@
-# unconventional js
-/blueprints/*/files/
-
-# compiled output
-/declarations/
-/dist/
-
-# misc
-/coverage/
-!.*
-.*/
-
-# ember-try
-/.node_modules.ember-try/

addons/rose/.eslintrc.js

@@ -1,71 +0,0 @@
-/**
- * Copyright IBM Corp. 2021, 2026
- * SPDX-License-Identifier: BUSL-1.1
- */
-
-'use strict';
-
-module.exports = {
-  root: true,
-  parser: '@babel/eslint-parser',
-  parserOptions: {
-    ecmaVersion: 'latest',
-    sourceType: 'module',
-    // This is specific babel-config. If grows consider creating a babel config file
-    requireConfigFile: false,
-    babelOptions: {
-      plugins: [
-        ['@babel/plugin-proposal-decorators', { decoratorsBeforeExport: true }],
-      ],
-    },
-    // end of babel-config
-  },
-  plugins: ['ember'],
-  extends: ['eslint:recommended', 'plugin:ember/recommended', 'prettier'],
-  env: {
-    browser: true,
-  },
-  rules: {
-    curly: ['error', 'multi-line', 'consistent'],
-    'ember/no-jquery': 'error',
-    'ember/no-new-mixins': 0,
-    'ember/no-get': 'off',
-    'ember/no-get-with-default': 'off',
-    'ember/no-computed-properties-in-native-classes': 'off',
-    'ember/no-assignment-of-untracked-properties-used-in-tracking-contexts':
-      'off',
-  },
-  overrides: [
-    // node files
-    {
-      files: [
-        './.eslintrc.js',
-        './.prettierrc.js',
-        './.stylelintrc.js',
-        './.template-lintrc.js',
-        './ember-cli-build.js',
-        './index.js',
-        './testem.js',
-        './blueprints/*/index.js',
-        './config/**/*.js',
-        './tests/dummy/config/**/*.js',
-      ],
-      parserOptions: {
-        sourceType: 'script',
-      },
-      env: {
-        browser: false,
-        node: true,
-      },
-      extends: ['plugin:n/recommended'],
-    },
-    {
-      // test files
-      files: ['tests/**/*-test.{js,ts}'],
-      extends: ['plugin:qunit/recommended'],
-      rules: {
-        'qunit/require-expect': [2, 'except-simple'],
-      },
-    },
-  ],
-};

addons/rose/eslint.config.js

@@ -0,0 +1,93 @@
+/**
+ * Copyright IBM Corp. 2021, 2026
+ * SPDX-License-Identifier: BUSL-1.1
+ */
+
+'use strict';
+
+/* eslint-disable n/no-unpublished-require */
+const { defineConfig, globalIgnores } = require('eslint/config');
+const babelParser = require('@babel/eslint-parser');
+const js = require('@eslint/js');
+const eslintPluginEmberRecommended = require('eslint-plugin-ember/configs/recommended');
+const nPlugin = require('eslint-plugin-n');
+const qunitPlugin = require('eslint-plugin-qunit');
+const eslintConfigPrettier = require('eslint-config-prettier/flat');
+const globals = require('globals');
+
+module.exports = defineConfig([
+  js.configs.recommended,
+  ...eslintPluginEmberRecommended,
+  {
+    languageOptions: {
+      parser: babelParser,
+      parserOptions: {
+        ecmaVersion: 'latest',
+        sourceType: 'module',
+        requireConfigFile: false,
+        // This is specific babel-config. If it grows consider creating a babel config file
+        babelOptions: {
+          plugins: [
+            [
+              '@babel/plugin-proposal-decorators',
+              { decoratorsBeforeExport: true },
+            ],
+          ],
+        },
+        // end of babel-config
+      },
+      globals: {
+        ...globals.browser,
+      },
+    },
+    rules: {
+      curly: ['error', 'multi-line', 'consistent'],
+      'ember/no-jquery': 'error',
+      'ember/no-new-mixins': 0,
+      'ember/no-get': 'off',
+      'ember/no-get-with-default': 'off',
+      'ember/no-computed-properties-in-native-classes': 'off',
+      'ember/no-assignment-of-untracked-properties-used-in-tracking-contexts':
+        'off',
+    },
+  },
+
+  // Node files configuration
+  {
+    files: [
+      'eslint.config.js',
+      '.prettierrc.js',
+      '.stylelintrc.js',
+      '.template-lintrc.js',
+      'ember-cli-build.js',
+      'index.js',
+      'testem.js',
+      'blueprints/*/index.js',
+      'config/**/*.js',
+      'tests/dummy/config/**/*.js',
+    ],
+    plugins: { n: nPlugin },
+    extends: [nPlugin.configs['flat/recommended-script']],
+  },
+
+  // Test files configuration
+  {
+    files: ['tests/**/*-test.{js,ts}'],
+    extends: [
+      { ...qunitPlugin.configs.recommended, plugins: { qunit: qunitPlugin } },
+    ],
+    rules: {
+      'qunit/require-expect': [2, 'except-simple'],
+    },
+  },
+  // Prettier should be last
+  eslintConfigPrettier,
+  globalIgnores([
+    'blueprints/*/files/',
+    'declarations/',
+    'dist/',
+    'coverage/',
+    '**/.*/',
+    '.node_modules.ember-try/',
+  ]),
+]);

addons/rose/package.json

@@ -76,11 +76,13 @@
     "ember-template-lint": "^6.0.0",
     "ember-template-lint-plugin-prettier": "^5.0.0",
     "ember-try": "^3.0.0",
-    "eslint": "^8.57.1",
-    "eslint-config-prettier": "^9.1.0",
-    "eslint-plugin-ember": "^12.2.1",
-    "eslint-plugin-n": "^16.6.2",
-    "eslint-plugin-qunit": "^8.1.2",
+    "eslint": "^9.18.0",
+    "eslint-config-prettier": "^10.1.8",
+    "eslint-plugin-ember": "^12.7.5",
+    "eslint-plugin-n": "^17.24.0",
+    "eslint-plugin-qunit": "^8.2.6",
+    "@eslint/js": "^9.18.0",
+    "globals": "^15.14.0",
     "loader.js": "^4.7.0",
     "postcss": "^8.4.31",
     "prettier": "^3.3.3",

addons/rose/tests/dummy/app/controllers/playground.js

@@ -10,8 +10,5 @@ export default class PlaygroundController extends Controller {
   color = 'green';
 
   @action
-  actionHandler(/*value*/) {
-    // eslint-disable-next-line no-console
-    //console.log('action handled');
-  }
+  actionHandler(/*value*/) {}
 }

e2e-tests/.eslintignore

@@ -1,4 +0,0 @@
-# e2e test output
-admin/artifacts
-desktop/artifacts
-playwright-report

e2e-tests/.eslintrc.cjs

@@ -1,32 +0,0 @@
-/**
- * Copyright IBM Corp. 2021, 2026
- * SPDX-License-Identifier: BUSL-1.1
- */
-
-module.exports = {
-  root: true,
-  parser: '@babel/eslint-parser',
-  parserOptions: {
-    ecmaVersion: 'latest',
-    sourceType: 'module',
-    // This is specific babel-config. If grows consider creating a babel config file
-    requireConfigFile: false,
-    // end of babel-config
-  },
-  extends: ['eslint:recommended', 'prettier'],
-  env: {
-    browser: true,
-    node: true,
-    es2021: true,
-  },
-  rules: {
-    curly: ['error', 'multi-line', 'consistent'],
-    'no-empty-pattern': ['error', { allowObjectPatternsAsParameters: true }],
-  },
-  overrides: [
-    {
-      "files": ["admin/tests/**", "desktop/tests/**"],
-      "extends": "plugin:playwright/recommended"
-    }
-  ]
-};

e2e-tests/eslint.config.js

@@ -0,0 +1,46 @@
+/**
+ * Copyright IBM Corp. 2021, 2026
+ * SPDX-License-Identifier: BUSL-1.1
+ */
+
+import { defineConfig, globalIgnores } from 'eslint/config';
+import babelParser from '@babel/eslint-parser';
+import js from '@eslint/js';
+import playwright from 'eslint-plugin-playwright';
+import eslintConfigPrettier from 'eslint-config-prettier/flat';
+import globals from 'globals';
+
+export default defineConfig([
+  js.configs.recommended,
+  {
+    languageOptions: {
+      parser: babelParser,
+      parserOptions: {
+        ecmaVersion: 'latest',
+        sourceType: 'module',
+        // This is specific babel-config. If grows consider creating a babel config file
+        requireConfigFile: false,
+        // end of babel-config
+      },
+      globals: {
+        ...globals.browser,
+        ...globals.node,
+        ...globals.es2021,
+      },
+    },
+    rules: {
+      curly: ['error', 'multi-line', 'consistent'],
+      'no-empty-pattern': ['error', { allowObjectPatternsAsParameters: true }],
+    },
+  },
+
+  // Playwright test files
+  {
+    files: ['admin/tests/**', 'desktop/tests/**'],
+    extends: [playwright.configs['flat/recommended']],
+  },
+
+  // Prettier should be last
+  eslintConfigPrettier,
+  globalIgnores(['admin/artifacts', 'desktop/artifacts', 'playwright-report']),
+]);

e2e-tests/helpers/boundary-cli.js

@@ -31,7 +31,7 @@ export * from './boundary-cli/workers.js';
 export async function checkBoundaryCli() {
   try {
     execSync('which boundary');
-  } catch (e) {
+  } catch {
     throw new Error('boundary does not exist on the path');
   }
 }

e2e-tests/helpers/vault-cli.js

@@ -11,7 +11,7 @@ import { execSync } from 'node:child_process';
 export async function checkVaultCli() {
   try {
     execSync('which vault');
-  } catch (e) {
+  } catch {
     throw new Error('vault does not exist on the path');
   }
 }

e2e-tests/package.json

@@ -30,14 +30,15 @@
   "devDependencies": {
     "@babel/core": "^7.26.10",
     "@babel/eslint-parser": "^7.21.3",
+    "@eslint/js": "^9.18.0",
     "@openapitools/openapi-generator-cli": "^2.25.2",
     "@playwright/test": "^1.56.1",
     "concurrently": "^9.1.0",
     "dotenv": "^16.4.5",
-    "eslint": "^8.54.0",
-    "eslint-config-prettier": "^9.0.0",
-    "eslint-plugin-n": "^16.3.1",
+    "eslint": "^9.18.0",
+    "eslint-config-prettier": "^10.1.8",
     "eslint-plugin-playwright": "^2.2.0",
+    "globals": "^15.14.0",
     "nanoid": "^5.0.9",
     "prettier": "^3.0.0",
     "tesseract.js": "^5.1.1"

ui/admin/.eslintignore

@@ -1,14 +0,0 @@
-# unconventional js
-/blueprints/*/files/
-
-# compiled output
-/declarations/
-/dist/
-
-# misc
-/coverage/
-!.*
-.*/
-
-# ember-try
-/.node_modules.ember-try/

ui/admin/.eslintrc.js

@@ -1,69 +0,0 @@
-/**
- * Copyright IBM Corp. 2021, 2026
- * SPDX-License-Identifier: BUSL-1.1
- */
-
-'use strict';
-
-module.exports = {
-  root: true,
-  parser: '@babel/eslint-parser',
-  parserOptions: {
-    ecmaVersion: 'latest',
-    sourceType: 'module',
-    // This is specific babel-config. If grows consider creating a babel config file
-    requireConfigFile: false,
-    babelOptions: {
-      plugins: [
-        ['@babel/plugin-proposal-decorators', { decoratorsBeforeExport: true }],
-      ],
-    },
-    // end of babel-config
-  },
-  plugins: ['ember'],
-  extends: ['eslint:recommended', 'plugin:ember/recommended', 'prettier'],
-  env: {
-    browser: true,
-  },
-  rules: {
-    curly: ['error', 'multi-line', 'consistent'],
-    'ember/no-get': 'off',
-    'ember/no-get-with-default': 'off',
-    'ember/no-computed-properties-in-native-classes': 'off',
-    'ember/no-assignment-of-untracked-properties-used-in-tracking-contexts':
-      'off',
-  },
-  overrides: [
-    // node files
-    {
-      files: [
-        './.eslintrc.js',
-        './.prettierrc.js',
-        './.stylelintrc.js',
-        './.template-lintrc.js',
-        './ember-cli-build.js',
-        './testem.js',
-        './blueprints/*/index.js',
-        './config/**/*.js',
-        './lib/*/index.js',
-        './server/**/*.js',
-      ],
-      parserOptions: {
-        sourceType: 'script',
-      },
-      env: {
-        browser: false,
-        node: true,
-      },
-      extends: ['plugin:n/recommended'],
-    },
-    {
-      // test files
-      files: ['tests/**/*-test.{js,ts}'],
-      extends: ['plugin:qunit/recommended'],
-      rules: {
-        'qunit/require-expect': [2, 'except-simple'],
-      },
-    },
-  ],
-};

ui/admin/app/components/form/target/add-host-sets/index.js

@@ -81,7 +81,7 @@ export default class FormTargetAddHostSetsComponent extends Component {
             confirm: 'resources.target.actions.remove-address',
           },
         );
-      } catch (e) {
+      } catch {
         // if the user denies, do nothing and return
         return;
       }

ui/admin/app/controllers/account/change-password.js

@@ -34,7 +34,7 @@ export default class AccountChangePasswordController extends Controller {
     // TransitionAborted error, which we do not want to show to the user.
     try {
       await this.router.replaceWith('index');
-    } catch (e) {
+    } catch {
       // no-op
     }
   }

ui/admin/app/helpers/can.js

@@ -43,7 +43,6 @@ class DevelopmentCanHelper extends CanHelper {
 
   removeAllFlags() {
     this.features.flags.forEach((flag) =>
-      /* eslint-disable-next-line ember/no-observers */
       this.features.removeObserver(flag, this, 'recompute'),
     );
   }

ui/admin/app/instance-initializers/feature-edition.js

@@ -20,7 +20,7 @@ async function autoInitializeFeatureEdition(owner) {
 
     edition = json?.license?.edition;
     features = json?.license?.features;
-  } catch (e) {
+  } catch {
     // if the request fails, the service will initialize the default edition
     // as specified in the config
   }

ui/admin/app/routes/application.js

@@ -53,7 +53,7 @@ export default class ApplicationRoute extends Route {
           });
           maybeModel?.rollbackAttributes();
           transition.retry();
-        } catch (e) {
+        } catch {
           // if user denies, do nothing
         }
       }

ui/admin/app/routes/scopes/scope/session-recordings/index.js

@@ -195,7 +195,7 @@ export default class ScopesScopeSessionRecordingsIndexRoute extends Route {
         recursive: true,
       });
       return Boolean(storageBuckets.length);
-    } catch (e) {
+    } catch {
       // no op
       return false;
     }

ui/admin/app/routes/scopes/scope/session-recordings/session-recording/channels-by-connection.js

@@ -39,7 +39,7 @@ export default class ScopesScopeSessionRecordingsSessionRecordingChannelsByConne
           storage_bucket_id,
         );
       }
-    } catch (e) {
+    } catch {
       // no op
     }
 

ui/admin/app/routes/scopes/scope/workers/worker/create-tags.js

@@ -27,7 +27,7 @@ export default class ScopesScopeWorkersWorkerCreateTagsRoute extends Route {
         });
         controller.set('apiTags', new TrackedArray([]));
         transition.retry();
-      } catch (e) {
+      } catch {
         // if user denies, do nothing
       }
     }

ui/admin/eslint.config.js

@@ -0,0 +1,88 @@
+/**
+ * Copyright IBM Corp. 2021, 2026
+ * SPDX-License-Identifier: BUSL-1.1
+ */
+
+'use strict';
+
+const { defineConfig, globalIgnores } = require('eslint/config');
+const babelParser = require('@babel/eslint-parser');
+const js = require('@eslint/js');
+const eslintPluginEmberRecommended = require('eslint-plugin-ember/configs/recommended');
+const nPlugin = require('eslint-plugin-n');
+const qunitPlugin = require('eslint-plugin-qunit');
+const eslintConfigPrettier = require('eslint-config-prettier/flat');
+const globals = require('globals');
+
+module.exports = defineConfig([
+  js.configs.recommended,
+  ...eslintPluginEmberRecommended,
+  {
+    languageOptions: {
+      parser: babelParser,
+      parserOptions: {
+        ecmaVersion: 'latest',
+        sourceType: 'module',
+        requireConfigFile: false,
+        // This is specific babel-config. If it grows consider creating a babel config file
+        babelOptions: {
+          plugins: [
+            [
+              '@babel/plugin-proposal-decorators',
+              { decoratorsBeforeExport: true },
+            ],
+          ],
+        },
+        // end of babel-config
+      },
+      globals: {
+        ...globals.browser,
+      },
+    },
+    rules: {
+      curly: ['error', 'multi-line', 'consistent'],
+      'ember/no-get': 'off',
+      'ember/no-get-with-default': 'off',
+      'ember/no-computed-properties-in-native-classes': 'off',
+      'ember/no-assignment-of-untracked-properties-used-in-tracking-contexts':
+        'off',
+    },
+  },
+
+  // Node files configuration
+  {
+    files: [
+      'eslint.config.js',
+      '.prettierrc.js',
+      '.stylelintrc.js',
+      '.template-lintrc.js',
+      'ember-cli-build.js',
+      'testem.js',
+      'config/**/*.js',
+      'server/**/*.js',
+    ],
+    plugins: { n: nPlugin },
+    extends: [nPlugin.configs['flat/recommended-script']],
+  },
+
+  // Test files configuration
+  {
+    files: ['tests/**/*-test.{js,ts}'],
+    extends: [
+      { ...qunitPlugin.configs.recommended, plugins: { qunit: qunitPlugin } },
+    ],
+    rules: {
+      'qunit/require-expect': [2, 'except-simple'],
+    },
+  },
+  // Prettier should be last
+  eslintConfigPrettier,
+  globalIgnores([
+    'blueprints/*/files/',
+    'declarations/',
+    'dist/',
+    'coverage/',
+    '**/.*/',
+    '.node_modules.ember-try/',
+  ]),
+]);

ui/admin/package.json

@@ -88,11 +88,13 @@
     "ember-source": "~5.12.0",
     "ember-template-lint": "^6.0.0",
     "ember-template-lint-plugin-prettier": "^5.0.0",
-    "eslint": "^8.57.1",
-    "eslint-config-prettier": "^9.1.0",
-    "eslint-plugin-ember": "^12.2.1",
-    "eslint-plugin-n": "^16.6.2",
-    "eslint-plugin-qunit": "^8.1.2",
+    "eslint": "^9.18.0",
+    "eslint-config-prettier": "^10.1.8",
+    "eslint-plugin-ember": "^12.7.5",
+    "eslint-plugin-n": "^17.24.0",
+    "eslint-plugin-qunit": "^8.2.6",
+    "@eslint/js": "^9.18.0",
+    "globals": "^17.3.0",
     "js-bexpr": "hashicorp/js-bexpr#9b4a4b54d85eba67fdfc0990133d1518d890b1e1",
     "loader.js": "^4.7.0",
     "miragejs": "^0.1.48",

ui/admin/tests/acceptance/credential-library/update-test.js

@@ -251,7 +251,7 @@ module('Acceptance | credential-libraries | update', function (hooks) {
 
     try {
       await visit(urls.credentialLibraries);
-    } catch (e) {
+    } catch {
       assert.dom(commonSelectors.MODAL_WARNING).isVisible();
 
       await click(commonSelectors.MODAL_WARNING_CONFIRM_BTN);

ui/admin/tests/acceptance/credential-store/credentials/update-test.js

@@ -552,7 +552,7 @@ module(
       assert.strictEqual(currentURL(), urls.usernamePasswordCredential);
       try {
         await visit(urls.credentials);
-      } catch (e) {
+      } catch {
         assert.dom(commonSelectors.MODAL_WARNING).isVisible();
 
         await click(commonSelectors.MODAL_WARNING_CONFIRM_BTN, 'Click Discard');
@@ -595,7 +595,7 @@ module(
 
       try {
         await visit(urls.credentials);
-      } catch (e) {
+      } catch {
         assert.dom(commonSelectors.MODAL_WARNING).isVisible();
 
         await click(commonSelectors.MODAL_WARNING_CONFIRM_BTN, 'Click Discard');
@@ -637,7 +637,7 @@ module(
 
       try {
         await visit(urls.credentials);
-      } catch (e) {
+      } catch {
         assert.dom(commonSelectors.MODAL_WARNING).isVisible();
 
         await click(commonSelectors.MODAL_WARNING_CONFIRM_BTN, 'Click Discard');
@@ -677,7 +677,7 @@ module(
       assert.strictEqual(currentURL(), urls.passwordCredential);
       try {
         await visit(urls.credentials);
-      } catch (e) {
+      } catch {
         assert.dom(commonSelectors.MODAL_WARNING).isVisible();
 
         await click(commonSelectors.MODAL_WARNING_CONFIRM_BTN, 'Click Discard');
@@ -722,7 +722,7 @@ module(
 
       try {
         await visit(urls.credentials);
-      } catch (e) {
+      } catch {
         assert.dom(commonSelectors.MODAL_WARNING).isVisible();
 
         await click(commonSelectors.MODAL_WARNING_CANCEL_BTN, 'Click Cancel');
@@ -769,7 +769,7 @@ module(
 
       try {
         await visit(urls.credentials);
-      } catch (e) {
+      } catch {
         assert.dom(commonSelectors.MODAL_WARNING).isVisible();
 
         await click(commonSelectors.MODAL_WARNING_CANCEL_BTN, 'Click Cancel');
@@ -827,7 +827,7 @@ module(
       assert.strictEqual(currentURL(), urls.jsonCredential);
       try {
         await visit(urls.credentials);
-      } catch (e) {
+      } catch {
         assert.dom(commonSelectors.MODAL_WARNING).isVisible();
         await click(commonSelectors.MODAL_WARNING_CANCEL_BTN, 'Click Cancel');
         assert.strictEqual(currentURL(), urls.jsonCredential);
@@ -871,7 +871,7 @@ module(
 
       try {
         await visit(urls.credentials);
-      } catch (e) {
+      } catch {
         assert.dom(commonSelectors.MODAL_WARNING).isVisible();
 
         await click(commonSelectors.MODAL_WARNING_CANCEL_BTN, 'Click Cancel');

ui/admin/tests/acceptance/credential-store/update-test.js

@@ -259,7 +259,7 @@ module('Acceptance | credential-stores | update', function (hooks) {
 
     try {
       await visit(urls.credentialStores);
-    } catch (e) {
+    } catch {
       assert.dom(commonSelectors.MODAL_WARNING).isVisible();
 
       await click(commonSelectors.MODAL_WARNING_CONFIRM_BTN, 'Click Discard');
@@ -297,7 +297,7 @@ module('Acceptance | credential-stores | update', function (hooks) {
 
     try {
       await visit(urls.credentialStores);
-    } catch (e) {
+    } catch {
       assert.dom(commonSelectors.MODAL_WARNING).isVisible();
 
       await click(commonSelectors.MODAL_WARNING_CONFIRM_BTN, 'Click Discard');
@@ -327,7 +327,7 @@ module('Acceptance | credential-stores | update', function (hooks) {
 
     try {
       await visit(urls.credentialStores);
-    } catch (e) {
+    } catch {
       assert.dom(commonSelectors.MODAL_WARNING).isVisible();
 
       await click(commonSelectors.MODAL_WARNING_CANCEL_BTN);
@@ -366,7 +366,7 @@ module('Acceptance | credential-stores | update', function (hooks) {
 
     try {
       await visit(urls.credentialStores);
-    } catch (e) {
+    } catch {
       assert.dom(commonSelectors.MODAL_WARNING).isVisible();
 
       await click(commonSelectors.MODAL_WARNING_CANCEL_BTN);

ui/admin/tests/acceptance/host-catalogs/host-sets/update-test.js

@@ -346,7 +346,7 @@ module('Acceptance | host-catalogs | host sets | update', function (hooks) {
     assert.strictEqual(currentURL(), urls.hostSet);
     try {
       await visit(urls.hostSets);
-    } catch (e) {
+    } catch {
       assert.ok(find(commonSelectors.MODAL_WARNING));
       await click(commonSelectors.MODAL_WARNING_CONFIRM_BTN);
       assert.strictEqual(currentURL(), urls.hostSets);

ui/admin/tests/acceptance/host-catalogs/hosts/update-test.js

@@ -197,7 +197,7 @@ module('Acceptance | host-catalogs | hosts | update', function (hooks) {
     // Wrap on a try/catch because transitioning while editing returns error
     try {
       await visit(urls.hosts);
-    } catch (e) {
+    } catch {
       assert.dom(commonSelectors.MODAL_WARNING).exists();
       await click(commonSelectors.MODAL_WARNING_CONFIRM_BTN);
       assert.strictEqual(currentURL(), urls.hosts);
@@ -235,7 +235,7 @@ module('Acceptance | host-catalogs | hosts | update', function (hooks) {
     // Wrap on a try/catch because transitioning while editing returns error
     try {
       await visit(urls.hosts);
-    } catch (e) {
+    } catch {
       assert.dom(commonSelectors.MODAL_WARNING).exists();
       await click(commonSelectors.MODAL_WARNING_CANCEL_BTN);
 

ui/desktop/.eslintignore

@@ -1,17 +0,0 @@
-# unconventional js
-/blueprints/*/files/
-
-# compiled output
-/declarations/
-/dist/
-
-# misc
-/coverage/
-!.*
-.*/
-
-# ember-electron
-/electron-app/
-
-# ember-try
-/.node_modules.ember-try/

ui/desktop/.eslintrc.js

@@ -1,71 +0,0 @@
-/**
- * Copyright IBM Corp. 2021, 2026
- * SPDX-License-Identifier: BUSL-1.1
- */
-
-'use strict';
-
-module.exports = {
-  root: true,
-  parser: '@babel/eslint-parser',
-  parserOptions: {
-    ecmaVersion: 'latest',
-    sourceType: 'module',
-    // This is specific babel-config. If grows consider creating a babel config file
-    requireConfigFile: false,
-    babelOptions: {
-      plugins: [
-        ['@babel/plugin-proposal-decorators', { decoratorsBeforeExport: true }],
-      ],
-    },
-    // end of babel-config
-  },
-  plugins: ['ember'],
-  extends: ['eslint:recommended', 'plugin:ember/recommended', 'prettier'],
-  env: {
-    browser: true,
-  },
-  rules: {
-    curly: ['error', 'multi-line', 'consistent'],
-    'ember/no-get': 'off',
-    'ember/no-get-with-default': 'off',
-    'ember/no-computed-properties-in-native-classes': 'off',
-    'ember/no-assignment-of-untracked-properties-used-in-tracking-contexts':
-      'off',
-  },
-  overrides: [
-    // node files
-    {
-      files: [
-        './.eslintrc.js',
-        './.prettierrc.js',
-        './.stylelintrc.js',
-        './.template-lintrc.js',
-        './ember-cli-build.js',
-        './testem.js',
-        './testem-electron.js',
-        './playwright.config.js',
-        './blueprints/*/index.js',
-        './config/**/*.js',
-        './lib/*/index.js',
-        './server/**/*.js',
-      ],
-      parserOptions: {
-        sourceType: 'script',
-      },
-      env: {
-        browser: false,
-        node: true,
-      },
-      extends: ['plugin:n/recommended'],
-    },
-    {
-      // test files
-      files: ['tests/**/*-test.{js,ts}'],
-      extends: ['plugin:qunit/recommended'],
-      rules: {
-        'qunit/require-expect': [2, 'except-simple'],
-      },
-    },
-  ],
-};

ui/desktop/app/controllers/scopes/scope/projects/targets/index.js

@@ -211,7 +211,7 @@ export default class ScopesScopeProjectsTargetsIndexController extends Controlle
       session = await this.store.findRecord('session', session_id, {
         reload: true,
       });
-    } catch (error) {
+    } catch {
       /**
        * if the user cannot read or fetch the session we add the important
        * information returned from the connect command to allow the user

ui/desktop/app/routes/scopes.js

@@ -29,7 +29,7 @@ export default class ScopesRoute extends Route {
       if (scopesCheck.response_type) {
         this.isPaginationSupported = true;
       }
-    } catch (e) {
+    } catch {
       // no op
     }
   }
@@ -80,7 +80,7 @@ export default class ScopesRoute extends Route {
         }
 
         if (!downloadLink) throw new Error('No build found');
-      } catch (e) {
+      } catch {
         // this is a catch for any errors that may occur and shows the user
         // an error alert directing them to the releases page
         downloadError = true;

ui/desktop/app/routes/scopes/scope/projects.js

@@ -83,7 +83,6 @@ export default class ScopesScopeProjectsRoute extends Route {
     let sessions;
 
     // We use a while loop to poll for new sessions from the client agent.
-    // eslint-disable-next-line no-constant-condition
     while (true) {
       try {
         sessions =
@@ -152,7 +151,7 @@ export default class ScopesScopeProjectsRoute extends Route {
               alias.destination_id,
             );
             orgScope = target.scope.parent_scope_id;
-          } catch (e) {
+          } catch {
             // Do nothing and default scope to global if an error occurs
           }
 

ui/desktop/app/routes/scopes/scope/projects/sessions/session.js

@@ -91,7 +91,7 @@ export default class ScopesScopeProjectsSessionsSessionRoute extends Route {
       try {
         const host = await this.store.findRecord('host', session.host_id);
         session.addHost(host);
-      } catch (error) {
+      } catch {
         // no operation
       }
     }

ui/desktop/app/routes/scopes/scope/projects/targets/target.js

@@ -61,7 +61,7 @@ export default class ScopesScopeProjectsTargetsTargetRoute extends Route {
         hosts = Array.from(
           new Map(allFilteredHosts.map((host) => [host.id, host])).values(),
         );
-      } catch (error) {
+      } catch {
         // no operation
       }
     }

ui/desktop/app/services/store.js

@@ -4,8 +4,6 @@
  */
 
 // Importing 'Store' from 'ember-data/store' to get default configuration automatically.
-// TODO: Remove eslint-disable after upgrading to eslint-plugin-ember >= v12.2.1
-// eslint-disable-next-line ember/use-ember-data-rfc-395-imports
 import Store from 'ember-data/store';
 import { CacheHandler } from '@ember-data/store';
 import RequestManager from '@ember-data/request';

ui/desktop/electron-app/config/cli.js

@@ -99,6 +99,7 @@ module.exports = {
         await extract(artifactPath, artifactDestination);
       } catch (e) {
         console.error('ERROR: Failed setting up CLI.', e);
+        // eslint-disable-next-line n/no-process-exit
         process.exit(1);
       }
     } else {

ui/desktop/electron-app/src/helpers/app-updater.js

@@ -173,7 +173,7 @@ module.exports = {
      */
     if (!boundaryCli.isBuiltInCli) return;
 
-    const latestVersion = await findLatestVersion(releasesUrl);
+    let latestVersion = await findLatestVersion(releasesUrl);
 
     // Ensure version is in proper format
     if (!semver.valid(latestVersion)) {

ui/desktop/electron-app/src/helpers/request-promise.js

@@ -18,7 +18,7 @@ const netRequest = (url) =>
       // request ends because:  request.abort() has no effect after a request
       // ends and the promise will already have been completed, so a rejection
       // has no effect either.
-      const requestTimeout = setTimeout(() => {
+      setTimeout(() => {
         request.abort();
         reject(new Error('Request timeout'));
       }, requestTimeoutSeconds * 1000);

ui/desktop/electron-app/src/index.js

@@ -3,13 +3,8 @@
  * SPDX-License-Identifier: BUSL-1.1
  */
 
-/* eslint-disable no-console */
 const path = require('path');
 const { net } = require('electron');
-const {
-  default: installExtension,
-  EMBER_INSPECTOR,
-} = require('electron-devtools-installer');
 const {
   session,
   app,

ui/desktop/electron-app/src/ipc/handlers.js

@@ -178,7 +178,7 @@ handle('searchCacheDaemon', async (request) =>
 handle('isCacheDaemonRunning', async () => {
   try {
     await cacheDaemonManager.status();
-  } catch (e) {
+  } catch {
     // There was likely an error connecting to the cache daemon.
     return false;
   }
@@ -208,7 +208,7 @@ handle('isClientAgentRunning', async () => {
     }
 
     return status.status === 'running';
-  } catch (e) {
+  } catch {
     // There was likely an error connecting to client agent.
     return false;
   }

ui/desktop/electron-app/src/models/runtime-settings.js

@@ -43,7 +43,7 @@ class RuntimeSettings {
       if (result.statusCode >= 400) {
         throw new Error();
       }
-    } catch (e) {
+    } catch {
       throw new Error(`Cluster URL ${clusterUrl} could not be validated.`);
     }
   }

ui/desktop/electron-app/src/services/cache-daemon-manager.js

@@ -120,6 +120,7 @@ class CacheDaemonManager {
   async search(requestData) {
     const start = Date.now();
     // Log request data, but clean up token from log
+    // eslint-disable-next-line no-unused-vars
     const { auth_token_id, token, ...logRequestData } = requestData;
 
     if (isWindows()) {

ui/desktop/electron-app/src/utils/generateErrorPromise.js

@@ -3,7 +3,6 @@
  * SPDX-License-Identifier: MPL-2.0
  */
 const jsonify = require('./jsonify');
-const log = require('electron-log/main');
 
 // Convert to json
 const generateErrorPromise = async (stderr) => {

ui/desktop/electron-app/src/utils/jsonify.js

@@ -3,14 +3,12 @@
  * SPDX-License-Identifier: BUSL-1.1
  */
 
-const log = require('electron-log/main');
-
 // Convert to json
 const jsonify = (data) => {
   if (typeof data !== 'string') data = JSON.stringify(data);
   try {
     return JSON.parse(data);
-  } catch (e) {
+  } catch {
     // Ignore parse errors
   }
 };

ui/desktop/electron-app/src/utils/sanitizer.js

@@ -3,8 +3,6 @@
  * SPDX-License-Identifier: BUSL-1.1
  */
 
-const { URL } = require('url');
-
 module.exports = {
   /**
    * Super paranoid shell quote/escape and validation.  Input must be base62.
@@ -27,7 +25,7 @@ module.exports = {
     try {
       const url = new URL(str);
       return `${url.protocol}//${url.host}`;
-    } catch (e) {
+    } catch {
       // Parse error
       throw new Error(`URL ${str} could not be validated.`);
     }

ui/desktop/electron-app/tests/index.js

@@ -3,16 +3,20 @@
  * SPDX-License-Identifier: BUSL-1.1
  */
 
+// TODO: Is this file still needed?
+
 const {
   default: installExtension,
   EMBER_INSPECTOR,
 } = require('electron-devtools-installer');
 const path = require('path');
 const { app } = require('electron');
+// eslint-disable-next-line n/no-missing-require
 const handleFileUrls = require('../src/handle-file-urls');
 const {
   setupTestem,
   openTestWindow,
+  // eslint-disable-next-line n/no-extraneous-require
 } = require('ember-electron/lib/test-support');
 
 const emberAppDir = path.resolve(__dirname, '..', 'ember-test');

ui/desktop/eslint.config.js

@@ -0,0 +1,107 @@
+/**
+ * Copyright IBM Corp. 2021, 2026
+ * SPDX-License-Identifier: BUSL-1.1
+ */
+
+'use strict';
+
+const { defineConfig, globalIgnores } = require('eslint/config');
+const babelParser = require('@babel/eslint-parser');
+const js = require('@eslint/js');
+const eslintPluginEmberRecommended = require('eslint-plugin-ember/configs/recommended');
+const nPlugin = require('eslint-plugin-n');
+const qunitPlugin = require('eslint-plugin-qunit');
+const eslintConfigPrettier = require('eslint-config-prettier/flat');
+const globals = require('globals');
+
+module.exports = defineConfig([
+  js.configs.recommended,
+  ...eslintPluginEmberRecommended,
+  {
+    languageOptions: {
+      parser: babelParser,
+      parserOptions: {
+        ecmaVersion: 'latest',
+        sourceType: 'module',
+        requireConfigFile: false,
+        // This is specific babel-config. If it grows consider creating a babel config file
+        babelOptions: {
+          plugins: [
+            [
+              '@babel/plugin-proposal-decorators',
+              { decoratorsBeforeExport: true },
+            ],
+          ],
+        },
+        // end of babel-config
+      },
+      globals: {
+        ...globals.browser,
+      },
+    },
+    rules: {
+      curly: ['error', 'multi-line', 'consistent'],
+      'ember/no-get': 'off',
+      'ember/no-get-with-default': 'off',
+      'ember/no-computed-properties-in-native-classes': 'off',
+      'ember/no-assignment-of-untracked-properties-used-in-tracking-contexts':
+        'off',
+    },
+  },
+
+  // Node files configuration
+  {
+    files: [
+      'eslint.config.js',
+      '.prettierrc.js',
+      '.stylelintrc.js',
+      '.template-lintrc.js',
+      'ember-cli-build.js',
+      'testem.js',
+      'testem-electron.js',
+      'playwright.config.js',
+      'config/**/*.js',
+      'server/**/*.js',
+      'electron-app/**/*.js',
+    ],
+    plugins: { n: nPlugin },
+    extends: [nPlugin.configs['flat/recommended-script']],
+  },
+
+  // These files reference config/config.js which is generated at build time
+  // and listed in .gitignore, so it won't exist when linting in CI unless we build first.
+  {
+    files: [
+      'electron-app/config/forge.config.js',
+      'electron-app/src/index.js',
+      'electron-app/src/config/menu.js',
+      'electron-app/src/ipc/handlers.js',
+      'electron-app/src/helpers/app-updater.js',
+    ],
+    rules: {
+      'n/no-missing-require': 'off',
+    },
+  },
+
+  // Test files configuration
+  {
+    files: ['tests/**/*-test.{js,ts}'],
+    extends: [
+      { ...qunitPlugin.configs.recommended, plugins: { qunit: qunitPlugin } },
+    ],
+    rules: {
+      'qunit/require-expect': [2, 'except-simple'],
+    },
+  },
+  // Prettier should be last
+  eslintConfigPrettier,
+  globalIgnores([
+    'declarations/',
+    'dist/',
+    'coverage/',
+    '**/.*/',
+    '.node_modules.ember-try/',
+    'electron-app/out/',
+    'electron-app/ember-dist/',
+  ]),
+]);

ui/desktop/package.json

@@ -95,11 +95,13 @@
     "ember-template-lint": "^6.0.0",
     "ember-template-lint-plugin-prettier": "^5.0.0",
     "ember-wormhole": "^0.6.0",
-    "eslint": "^8.57.1",
-    "eslint-config-prettier": "^9.1.0",
-    "eslint-plugin-ember": "^12.2.1",
-    "eslint-plugin-n": "^16.6.2",
-    "eslint-plugin-qunit": "^8.1.2",
+    "eslint": "^9.18.0",
+    "eslint-config-prettier": "^10.1.8",
+    "eslint-plugin-ember": "^12.7.5",
+    "eslint-plugin-n": "^17.24.0",
+    "eslint-plugin-qunit": "^8.2.6",
+    "@eslint/js": "^9.18.0",
+    "globals": "^17.3.0",
     "js-bexpr": "hashicorp/js-bexpr#9b4a4b54d85eba67fdfc0990133d1518d890b1e1",
     "loader.js": "^4.7.0",
     "miragejs": "^0.1.48",