refactor: update backend node version and refine typescript rules

Author: mitchelvanbever

src/configs/backend.ts

@@ -13,14 +13,15 @@ export function createBackendConfig(): FlatConfigArray {
 			languageOptions: {
 				globals: {
 					...globals.node,
+					...globals.es2021,
 				},
 			},
 			rules: {
 				// Console logging rules for backend
 				'no-console': ['error', { allow: ['warn', 'error', 'info'] }],
 
-				// Node.js specific rules
-				'n/no-unsupported-features/node-builtins': 'error',
+				// Node.js specific rules (targeting Node 20+)
+				'n/no-unsupported-features/node-builtins': ['error', { version: '>=20.0.0' }],
 				'n/no-unsupported-features/es-syntax': 'off', // TypeScript handles this
 				'n/no-missing-import': 'off', // TypeScript handles this
 				'n/no-unpublished-import': 'off', // Often triggers false positives

src/configs/base.ts

@@ -53,7 +53,9 @@ export function createBaseConfig(options: InstantConfig = {}): FlatConfigArray {
 
 		// TypeScript-specific rules
 		{
+			files: ['**/*.{ts,tsx}'],
 			rules: {
+				'no-undef': 'off', // TypeScript handles undefined variable checking
 				'@typescript-eslint/consistent-type-imports': [
 					'error',
 					{ prefer: 'type-imports', fixStyle: 'inline-type-imports' },
@@ -66,6 +68,14 @@ export function createBaseConfig(options: InstantConfig = {}): FlatConfigArray {
 						varsIgnorePattern: '_',
 					},
 				],
+				'@typescript-eslint/no-unused-expressions': [
+					'error',
+					{
+						allowShortCircuit: true,
+						allowTernary: true,
+						allowTaggedTemplates: true,
+					},
+				],
 				'@typescript-eslint/no-explicit-any': 'warn',
 				'@typescript-eslint/no-empty-object-type': 'off',
 				'@typescript-eslint/no-namespace': 'off',

src/configs/react.ts

@@ -11,6 +11,17 @@ export function createReactConfig(options: InstantConfig = {}): FlatConfigArray
 	const enableA11y = features.a11y !== false; // Default true for React
 
 	const configs: FlatConfigArray = [
+		// Browser globals for all files in React projects
+		{
+			files: ['**/*.{js,jsx,ts,tsx}'],
+			languageOptions: {
+				globals: {
+					...globals.browser,
+					...globals.es2021,
+				},
+			},
+		},
+
 		// React plugin recommended config
 		{
 			files: ['**/*.{jsx,tsx}'],
@@ -23,9 +34,6 @@ export function createReactConfig(options: InstantConfig = {}): FlatConfigArray
 						jsx: true,
 					},
 				},
-				globals: {
-					...globals.browser,
-				},
 			},
 			settings: {
 				react: {
@@ -46,7 +54,7 @@ export function createReactConfig(options: InstantConfig = {}): FlatConfigArray
 			},
 			rules: {
 				...reactHooks.configs.recommended.rules,
-				'react-hooks/exhaustive-deps': 'warn',
+				'react-hooks/exhaustive-deps': 'off',
 			},
 		},