[WIP] Setup ESLint and Code Quality Tools for Project

.eslintignore

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+# Dependency directories
+node_modules/
+
+# Build output
+dist/
+build/
+
+# Configuration files
+*.config.js
+
+# Test files
+**/*.test.ts
+**/*.spec.ts
+
+# Other ignores
+.git/
+.vscode/
+.idea/

eslint.config.js

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+// @ts-check
+import eslint from '@eslint/js';
+import tseslint from 'typescript-eslint';
+
+export default tseslint.config(
+  eslint.configs.recommended,
+  ...tseslint.configs.recommended,
+  {
+    rules: {
+      // Possible Errors
+      'no-console': 'warn',
+      'no-unused-vars': 'error',
+
+      // Best Practices
+      'eqeqeq': ['error', 'always'],
+      'no-duplicate-imports': 'error',
+
+      // TypeScript-specific rules
+      '@typescript-eslint/explicit-function-return-type': 'error',
+      '@typescript-eslint/no-explicit-any': 'warn',
+      '@typescript-eslint/ban-types': 'error',
+
+      // Formatting and Style
+      'indent': ['error', 2],
+      'semi': ['error', 'always'],
+      'quotes': ['error', 'single'],
+      'max-len': ['warn', { code: 120 }],
+    },
+    languageOptions: {
+      parser: tseslint.parser,
+      parserOptions: {
+        ecmaVersion: 'latest',
+        sourceType: 'module',
+      },
+    },
+    ignores: [
+      'node_modules/',
+      'dist/',
+      'build/',
+      '*.config.js',
+      '**/*.test.ts',
+      '**/*.spec.ts',
+      '.git/',
+      '.vscode/',
+      '.idea/'
+    ]
+  }
+);