feat: add regexp plugin and enable by default

Author: antfu

eslint.config.ts

@@ -1,5 +1,4 @@
 // @ts-expect-error missing types
-// @eslint-ts-patch-loader tsx
 import styleMigrate from '@stylistic/eslint-plugin-migrate'
 import { antfu } from './src'
 

package.json

@@ -110,6 +110,7 @@
     "eslint-plugin-n": "^17.6.0",
     "eslint-plugin-no-only-tests": "^3.1.0",
     "eslint-plugin-perfectionist": "^2.10.0",
+    "eslint-plugin-regexp": "^2.5.0",
     "eslint-plugin-toml": "^0.11.0",
     "eslint-plugin-unicorn": "^52.0.0",
     "eslint-plugin-unused-imports": "^3.2.0",

pnpm-lock.yaml

@@ -1,7 +1,7 @@
 import fs from 'node:fs/promises'
 import { flatConfigsToRulesDTS } from 'eslint-typegen/core'
 import { builtinRules } from 'eslint/use-at-your-own-risk'
-import { astro, combine, comments, formatters, imports, javascript, jsdoc, jsonc, markdown, node, perfectionist, react, solid, sortPackageJson, stylistic, svelte, test, toml, typescript, unicorn, unocss, vue, yaml } from '../src'
+import { astro, combine, comments, formatters, imports, javascript, jsdoc, jsonc, markdown, node, perfectionist, react, regexp, solid, sortPackageJson, stylistic, svelte, test, toml, typescript, unicorn, unocss, vue, yaml } from '../src'
 
 const configs = await combine(
   {
@@ -28,6 +28,7 @@ const configs = await combine(
   svelte(),
   test(),
   toml(),
+  regexp(),
   typescript(),
   unicorn(),
   unocss(),

scripts/typegen.ts

@@ -22,3 +22,4 @@ export * from './unicorn'
 export * from './unocss'
 export * from './vue'
 export * from './yaml'
+export * from './regexp'

src/configs/index.ts

@@ -0,0 +1,30 @@
+import { configs } from 'eslint-plugin-regexp'
+import type { OptionsOverrides, OptionsRegExp, TypedFlatConfigItem } from '../types'
+
+export async function regexp(
+  options: OptionsRegExp & OptionsOverrides = {},
+): Promise<TypedFlatConfigItem[]> {
+  const config = configs['flat/recommended'] as TypedFlatConfigItem
+
+  const rules = {
+    ...config.rules,
+  }
+
+  if (options.level === 'warn') {
+    for (const key in rules) {
+      if (rules[key] === 'error')
+        rules[key] = 'warn'
+    }
+  }
+
+  return [
+    {
+      ...config,
+      name: 'antfu/regexp/rules',
+      rules: {
+        ...rules,
+        ...options.overrides,
+      },
+    },
+  ]
+}

src/configs/regexp.ts

@@ -32,6 +32,7 @@ import {
 } from './configs'
 import { interopDefault } from './utils'
 import { formatters } from './configs/formatters'
+import { regexp } from './configs/regexp'
 
 const flatConfigProps: (keyof TypedFlatConfigItem)[] = [
   'name',
@@ -87,6 +88,7 @@ export function antfu(
     gitignore: enableGitignore = true,
     isInEditor = !!((process.env.VSCODE_PID || process.env.VSCODE_CWD || process.env.JETBRAINS_IDE || process.env.VIM) && !process.env.CI),
     react: enableReact = false,
+    regexp: enableRegexp = true,
     solid: enableSolid = false,
     svelte: enableSvelte = false,
     typescript: enableTypeScript = isPackageExists('typescript'),
@@ -156,6 +158,9 @@ export function antfu(
     }))
   }
 
+  if (enableRegexp)
+    configs.push(regexp(typeof enableRegexp === 'boolean' ? {} : enableRegexp))
+
   if (options.test ?? true) {
     configs.push(test({
       isInEditor,

src/factory.ts

@@ -156,6 +156,13 @@ export interface OptionsOverrides {
   overrides?: TypedFlatConfigItem['rules']
 }
 
+export interface OptionsRegExp {
+  /**
+   * Override rulelevels
+   */
+  level?: 'error' | 'warn'
+}
+
 export interface OptionsIsInEditor {
   isInEditor?: boolean
 }
@@ -278,10 +285,19 @@ export interface OptionsConfig extends OptionsComponentExts {
   /**
    * Enable stylistic rules.
    *
+   * @see https://eslint.style/
    * @default true
    */
   stylistic?: boolean | (StylisticConfig & OptionsOverrides)
 
+  /**
+   * Enable regexp rules.
+   *
+   * @see https://ota-meshi.github.io/eslint-plugin-regexp/
+   * @default true
+   */
+  regexp?: boolean | (OptionsRegExp & OptionsOverrides)
+
   /**
    * Enable react rules.
    *