phase 5

frontend/eslint.config.js

@@ -0,0 +1,63 @@
+// ESLint v9 Flat Config
+import tseslint from 'typescript-eslint';
+import svelte from 'eslint-plugin-svelte';
+import prettier from 'eslint-config-prettier';
+import globals from 'globals';
+
+export default [
+  // Ignore patterns
+  {
+    ignores: [
+      '**/node_modules/**',
+      '**/dist/**',
+      '**/build/**',
+      '**/.svelte-kit/**',
+      '**/coverage/**',
+      '**/*.min.js',
+    ],
+  },
+
+  // Base recommended configs
+  ...tseslint.configs.recommended,
+  ...svelte.configs['flat/recommended'],
+  prettier,
+
+  // Configuration for all files
+  {
+    languageOptions: {
+      globals: {
+        ...globals.browser,
+        ...globals.node,
+      },
+    },
+    rules: {
+      '@typescript-eslint/no-unused-vars': [
+        'error',
+        {
+          argsIgnorePattern: '^_',
+          varsIgnorePattern: '^_',
+        },
+      ],
+      '@typescript-eslint/no-explicit-any': 'warn',
+      'no-console': ['warn', { allow: ['warn', 'error'] }],
+      'prefer-const': 'error',
+      'no-var': 'error',
+    },
+  },
+
+  // Svelte-specific config
+  {
+    files: ['**/*.svelte'],
+    languageOptions: {
+      parserOptions: {
+        parser: tseslint.parser,
+      },
+    },
+    rules: {
+      'svelte/no-at-html-tags': 'error',
+      'svelte/no-target-blank': 'error',
+      '@typescript-eslint/no-explicit-any': 'off', // Allow any in Svelte files
+    },
+  },
+];
+