1 files changed, 80 insertions, 0 deletions
diff --git a/eslint.config.js b/eslint.config.js
new file mode 100644
index 000000000..f1fc76d28
--- /dev/null
+++ b/eslint.config.js
@@ -0,0 +1,80 @@
+import js from '@eslint/js';
+
+export default [
+  js.configs.recommended,
+
+  {
+    files: ['js/**/*.js', 'plugins/**/*.js'],
+    languageOptions: {
+      ecmaVersion: 2022,
+      sourceType: 'script',
+      globals: {
+        // Browser
+        window: 'readonly',
+        document: 'readonly',
+        console: 'readonly',
+        alert: 'readonly',
+        confirm: 'readonly',
+        setTimeout: 'readonly',
+        setInterval: 'readonly',
+        clearTimeout: 'readonly',
+        clearInterval: 'readonly',
+        fetch: 'readonly',
+        XMLHttpRequest: 'readonly',
+        localStorage: 'readonly',
+        location: 'readonly',
+        history: 'readonly',
+
+        // tt-rss
+        App: 'writable',
+        Article: 'writable',
+        CommonDialogs: 'writable',
+        CommonFilters: 'writable',
+        Feeds: 'writable',
+        FeedStoreModel: 'writable',
+        FeedTree: 'writable',
+        Headlines: 'writable',
+        PluginHost: 'writable',
+        PrefFeedStore: 'writable',
+        PrefFeedTree: 'writable',
+        PrefFilterStore: 'writable',
+        PrefFilterTree: 'writable',
+        PrefHelpers: 'writable',
+        PrefLabelTree: 'writable',
+        PrefUsers: 'writable',
+        SingleUseDialog: 'writable',
+        Toolbar: 'writable',
+
+        // Dojo
+        dojo: 'readonly',
+        dijit: 'readonly'
+      }
+    },
+
+    rules: {
+      'no-undef': 'warn',
+      'no-unused-vars': 'warn',
+      'no-console': 'off',
+
+      'prefer-const': 'error',
+      'no-var': 'warn',
+
+      'eqeqeq': ['error', 'always'],
+      'no-caller': 'error',
+      'no-proto': 'error',
+
+      'linebreak-style': ['error', 'unix'],
+      'eol-last': 'error',
+      'no-trailing-spaces': 'error',
+      'no-multiple-empty-lines': ['error', { 'max': 2 }],
+
+      'keyword-spacing': ['error', { 'after': true, 'before': true }],
+      'block-spacing': ['error', 'always'],
+      'computed-property-spacing': ['error', 'never'],
+
+      'no-empty': ['error', { 'allowEmptyCatch': true }],
+
+      'max-statements-per-line': ['warn', { 'max': 2 }]
+    }
+  }
+];