diff --git a/.eslint.config.js b/.eslint.config.js
deleted file mode 100644
index 4e78491..0000000
--- a/.eslint.config.js
+++ /dev/null
@@ -1,143 +0,0 @@
-// SPDX-License-Identifier: CC0-1.0
-// SPDX-FileCopyrightText: No rights reserved
-
-import js from '@eslint/js';
-
-export default [
-    js.configs.recommended,
-    {
-        languageOptions: {
-            globals: {
-                ARGV: 'readonly',
-                Debugger: 'readonly',
-                GIRepositoryGType: 'readonly',
-                globalThis: 'readonly',
-                imports: 'readonly',
-                Intl: 'readonly',
-                log: 'readonly',
-                logError: 'readonly',
-                pkg: 'readonly',
-                print: 'readonly',
-                printerr: 'readonly',
-                window: 'readonly',
-                TextEncoder: 'readonly',
-                TextDecoder: 'readonly',
-                console: 'readonly',
-                setTimeout: 'readonly',
-                setInterval: 'readonly',
-                clearTimeout: 'readonly',
-                clearInterval: 'readonly',
-            },
-            parserOptions: {
-                ecmaVersion: 2022,
-                sourceType: 'module',
-            },
-        },
-        rules: {
-            // See: https://eslint.org/docs/latest/rules/#possible-problems
-            'array-callback-return': 'error',
-            'no-await-in-loop': 'error',
-            'no-constant-binary-expression': 'error',
-            'no-constructor-return': 'error',
-            'no-new-native-nonconstructor': 'error',
-            'no-promise-executor-return': 'error',
-            'no-self-compare': 'error',
-            'no-template-curly-in-string': 'error',
-            'no-unmodified-loop-condition': 'error',
-            'no-unreachable-loop': 'error',
-            'no-unused-private-class-members': 'error',
-            'no-use-before-define': [
-                'error',
-                {
-                    functions: false,
-                    classes: true,
-                    variables: true,
-                    allowNamedExports: true,
-                },
-            ],
-            // See: https://eslint.org/docs/latest/rules/#suggestions
-            'block-scoped-var': 'error',
-            'complexity': 'warn',
-            'consistent-return': 'error',
-            'default-param-last': 'error',
-            'eqeqeq': 'error',
-            'no-array-constructor': 'error',
-            'no-caller': 'error',
-            'no-extend-native': 'error',
-            'no-extra-bind': 'error',
-            'no-extra-label': 'error',
-            'no-iterator': 'error',
-            'no-label-var': 'error',
-            'no-loop-func': 'error',
-            'no-multi-assign': 'warn',
-            'no-new-object': 'error',
-            'no-new-wrappers': 'error',
-            'no-proto': 'error',
-            'no-shadow': 'warn',
-            'no-unused-vars': [
-                'error',
-                {
-                    varsIgnorePattern: '^_',
-                    argsIgnorePattern: '^_',
-                },
-            ],
-            'no-var': 'warn',
-            'unicode-bom': 'error',
-            // GJS Restrictions
-            'no-restricted-globals': [
-                'error',
-                {
-                    name: 'Debugger',
-                    message: 'Internal use only',
-                },
-                {
-                    name: 'GIRepositoryGType',
-                    message: 'Internal use only',
-                },
-                {
-                    name: 'log',
-                    message: 'Use console.log()',
-                },
-                {
-                    name: 'logError',
-                    message: 'Use console.warn() or console.error()',
-                },
-            ],
-            'no-restricted-properties': [
-                'error',
-                {
-                    object: 'imports',
-                    property: 'format',
-                    message: 'Use template strings',
-                },
-                {
-                    object: 'pkg',
-                    property: 'initFormat',
-                    message: 'Use template strings',
-                },
-                {
-                    object: 'Lang',
-                    property: 'copyProperties',
-                    message: 'Use Object.assign()',
-                },
-                {
-                    object: 'Lang',
-                    property: 'bind',
-                    message: 'Use arrow notation or Function.prototype.bind()',
-                },
-                {
-                    object: 'Lang',
-                    property: 'Class',
-                    message: 'Use ES6 classes',
-                },
-            ],
-            'no-restricted-syntax': [
-                'error',
-                {
-                    selector: 'MethodDefinition[key.name="_init"] CallExpression[arguments.length<=1][callee.object.type="Super"][callee.property.name="_init"]',
-                    message: 'Use constructor() and super()',
-                },
-            ],
-        },
-    },
-];
diff --git a/.eslintrc.yml b/.eslintrc.yml
new file mode 100644
index 0000000..9cfe52a
--- /dev/null
+++ b/.eslintrc.yml
@@ -0,0 +1,109 @@
+# SPDX-License-Identifier: CC0-1.0
+# SPDX-FileCopyrightText: No rights reserved
+
+env:
+  es2021: true
+extends: 'eslint:recommended'
+rules:
+  # See: https://eslint.org/docs/latest/rules/#possible-problems
+  array-callback-return: error
+  no-await-in-loop: error
+  no-constant-binary-expression: error
+  no-constructor-return: error
+  #no-duplicate-imports: error
+  no-new-native-nonconstructor: error
+  no-promise-executor-return: error
+  no-self-compare: error
+  no-template-curly-in-string: error
+  no-unmodified-loop-condition: error
+  no-unreachable-loop: error
+  no-unused-private-class-members: error
+  no-use-before-define:
+    - error
+    - functions: false
+      classes: true
+      variables: true
+      allowNamedExports: true
+  # See: https://eslint.org/docs/latest/rules/#suggestions
+  block-scoped-var: error
+  complexity: warn
+  consistent-return: error
+  default-param-last: error
+  eqeqeq: error
+  no-array-constructor: error
+  no-caller: error
+  no-extend-native: error
+  no-extra-bind: error
+  no-extra-label: error
+  no-iterator: error
+  no-label-var: error
+  no-loop-func: error
+  no-multi-assign: warn
+  no-new-object: error
+  no-new-wrappers: error
+  no-proto: error
+  no-shadow: warn
+  no-unused-vars:
+    - error
+    - varsIgnorePattern: ^_
+      argsIgnorePattern: ^_
+  no-var: warn
+  unicode-bom: error
+  # GJS Restrictions
+  no-restricted-globals:
+    - error
+    - name: Debugger
+      message: Internal use only
+    - name: GIRepositoryGType
+      message: Internal use only
+    - name: log
+      message: Use console.log()
+    - name: logError
+      message: Use console.warn() or console.error()
+  no-restricted-properties:
+    - error
+    - object: imports
+      property: format
+      message: Use template strings
+    - object: pkg
+      property: initFormat
+      message: Use template strings
+    - object: Lang
+      property: copyProperties
+      message: Use Object.assign()
+    - object: Lang
+      property: bind
+      message: Use arrow notation or Function.prototype.bind()
+    - object: Lang
+      property: Class
+      message: Use ES6 classes
+  no-restricted-syntax:
+    - error
+    - selector: >-
+        MethodDefinition[key.name="_init"]
+        CallExpression[arguments.length<=1][callee.object.type="Super"][callee.property.name="_init"]
+      message: Use constructor() and super()
+# GJS Globals
+globals:
+  ARGV: readonly
+  Debugger: readonly
+  GIRepositoryGType: readonly
+  globalThis: readonly
+  imports: readonly
+  Intl: readonly
+  log: readonly
+  logError: readonly
+  pkg: readonly
+  print: readonly
+  printerr: readonly
+  window: readonly
+  TextEncoder: readonly
+  TextDecoder: readonly
+  console: readonly
+  setTimeout: readonly
+  setInterval: readonly
+  clearTimeout: readonly
+  clearInterval: readonly
+parserOptions:
+  ecmaVersion: 2022
+  sourceType: module