fix: add eslint-plugin-regexp and resolve linting errors (#3673)

Author: BobbieGoede

eslint.config.js

@@ -2,6 +2,7 @@ import globals from 'globals'
 import js from '@eslint/js'
 import ts from 'typescript-eslint'
 import eslintConfigPrettier from 'eslint-config-prettier'
+import * as regexpPlugin from 'eslint-plugin-regexp'
 
 /**
  * @typedef {import("eslint").Linter.FlatConfig[]} FlatConfigs
@@ -41,6 +42,7 @@ export default [
 
   // typescript-eslint
   ...ts.configs.recommendedTypeChecked,
+  regexpPlugin.configs['flat/recommended'],
   {
     files: ['**/*.ts', '**/*.tsx', '**/*.cts', '**/*.mts'],
     languageOptions: {

package.json

@@ -124,6 +124,7 @@
     "consola": "^3.4.2",
     "eslint": "^9.28.0",
     "eslint-config-prettier": "^10.1.5",
+    "eslint-plugin-regexp": "^2.7.0",
     "get-port-please": "^3.1.2",
     "gh-changelogen": "^0.2.8",
     "globals": "^16.2.0",