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backend/eslint.config.js

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+const eslint = require('@eslint/js');
+const tseslint = require('typescript-eslint');
+const eslintPluginPrettierRecommended = require('eslint-plugin-prettier/recommended');
+const globals = require('globals');
+
+module.exports = tseslint.config(
+  {
+    files: ["**/*.ts"],
+    languageOptions: {
+      globals: {
+        ...globals.node,
+        'Express': false,
+        'BufferEncoding': false,
+      }
+    }
+  },
+  {
+    ignores: ['eslint.config.js'],
+  },
+  eslint.configs.recommended,
+  ...tseslint.configs.strict,
+  ...tseslint.configs.stylistic,
+  eslintPluginPrettierRecommended,
+  {
+    rules: {
+      '@typescript-eslint/no-extraneous-class': 'off',
+      '@typescript-eslint/no-explicit-any': 'warn',
+      '@typescript-eslint/consistent-type-definitions': 'warn',
+      "no-undef": "error",
+      "no-global-assign": "error",
+      "no-new-object": "error",
+      'max-len': ['warn', 120, 2],
+    },
+  },
+);