fix: move regex literals to module scope to fix e18e/prefer-static-regex lint errors

Extracts inline regex patterns from inside functions to module-level constants
across 38 files to avoid unnecessary re-compilation on every call.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: productdevbook

examples/better-auth/server/drizzle/schema/book.ts

@@ -4,6 +4,8 @@ import { v7 as uuidv7 } from 'uuid'
 import { user } from './auth'
 import { customTimestamp } from './shared'
 
+const FOUR_DIGIT_YEAR_RE = /^\d{4}$/
+
 // Book table - Demonstrates user ownership with Better Auth
 export const book = pgTable('book', {
   id: uuid().primaryKey().$defaultFn(uuidv7),
@@ -30,7 +32,7 @@ export const insertBookSchema = createInsertSchema(book, {
   title: schema => schema.min(1, 'Title is required'),
   author: schema => schema.min(1, 'Author is required'),
   isbn: schema => schema.length(13, 'ISBN must be 13 characters').optional(),
-  publishedYear: schema => schema.regex(/^\d{4}$/, 'Year must be 4 digits').optional(),
+  publishedYear: schema => schema.regex(FOUR_DIGIT_YEAR_RE, 'Year must be 4 digits').optional(),
 }).omit({ userId: true }) // userId is auto-assigned in resolvers
 
 export const selectBookSchema = createSelectSchema(book)

examples/drizzle-orm/server/drizzle/schema/book.ts

@@ -3,6 +3,8 @@ import { createInsertSchema, createSelectSchema } from 'drizzle-zod'
 import { v7 as uuidv7 } from 'uuid'
 import { customTimestamp } from './shared'
 
+const FOUR_DIGIT_YEAR_RE = /^\d{4}$/
+
 // Book table - Simple example with a single table
 export const book = pgTable('book', {
   id: uuid().primaryKey().$defaultFn(uuidv7),
@@ -24,7 +26,7 @@ export const insertBookSchema = createInsertSchema(book, {
   title: schema => schema.min(1, 'Title is required'),
   author: schema => schema.min(1, 'Author is required'),
   isbn: schema => schema.length(13, 'ISBN must be 13 characters').optional(),
-  publishedYear: schema => schema.regex(/^\d{4}$/, 'Year must be 4 digits').optional(),
+  publishedYear: schema => schema.regex(FOUR_DIGIT_YEAR_RE, 'Year must be 4 digits').optional(),
 })
 
 export const selectBookSchema = createSelectSchema(book)

playgrounds/nitro/server/graphql/directives/format.directive.ts

@@ -2,6 +2,10 @@ import { getDirective, MapperKind, mapSchema } from '@graphql-tools/utils'
 import { defaultFieldResolver } from 'graphql'
 import { defineDirective } from 'nitro-graphql/define'
 
+const UPPERCASE_LETTER_RE = /([A-Z])/g
+const UNDERSCORE_LOWERCASE_RE = /_([a-z])/g
+const LEADING_UNDERSCORE_RE = /^_/
+
 /**
  * @format directive - Apply multiple formatting operations
  *
@@ -57,10 +61,10 @@ export const formatDirective = defineDirective({
                     result = result.charAt(0).toUpperCase() + result.slice(1).toLowerCase()
                     break
                   case 'SNAKE_CASE':
-                    result = result.replace(/([A-Z])/g, '_$1').toLowerCase().replace(/^_/, '')
+                    result = result.replace(UPPERCASE_LETTER_RE, '_$1').toLowerCase().replace(LEADING_UNDERSCORE_RE, '')
                     break
                   case 'CAMEL_CASE':
-                    result = result.replace(/_([a-z])/g, (_, letter) => letter.toUpperCase())
+                    result = result.replace(UNDERSCORE_LOWERCASE_RE, (_, letter) => letter.toUpperCase())
                     break
                 }
               }

playgrounds/nitro/server/graphql/directives/list.directive.ts

@@ -83,7 +83,7 @@ export const listDirective = defineDirective({
 
             // Apply sort
             if (listDirective.sort && result.length > 0) {
-              result = [...result].sort((a, b) => {
+              result = result.toSorted((a, b) => {
                 const aVal = a?.[listDirective.sort]
                 const bVal = b?.[listDirective.sort]
 
@@ -97,7 +97,7 @@ export const listDirective = defineDirective({
 
             // Apply reverse
             if (listDirective.reverse) {
-              result = [...result].reverse()
+              result = result.toReversed()
             }
 
             // Apply max limit

playgrounds/subscriptions/server/graphql/chat.resolver.ts

@@ -12,6 +12,8 @@ import {
   withFilter,
 } from 'nitro-graphql/define'
 
+const WHITESPACE_RE = /\s+/g
+
 // Define topic types for type-safe PubSub
 interface ChatTopics {
   'message:added': Message
@@ -53,7 +55,7 @@ export const chatQueries = defineQuery({
   },
 
   channels: () => {
-    return Array.from(channels.values())
+    return [...channels.values()]
   },
 })
 
@@ -81,7 +83,7 @@ export const chatMutations = defineMutation({
 
   createChannel: async (_, { name }) => {
     const channel: Channel = {
-      id: name.toLowerCase().replace(/\s+/g, '-'),
+      id: name.toLowerCase().replace(WHITESPACE_RE, '-'),
       name,
       createdAt: new Date().toISOString(),
     }

src/cli/commands/generate.ts

@@ -21,6 +21,8 @@ import { buildGraphQLSchema } from '../../core/schema'
 import { existsSync_, mkdirSync_, onSignal, readFileSync_, writeFileSync_ } from '../../core/utils/runtime'
 
 const logger = consola.withTag(LOG_TAG)
+const NODE_MODULES_RE = /node_modules/
+const DOT_GIT_RE = /\.git/
 
 /**
  * Create ScanContext from CLI context
@@ -302,8 +304,8 @@ async function watchAndRegenerate(
     ignoreInitial: true,
     ignored: [
       ...ctx.config.ignore || [],
-      /node_modules/,
-      /\.git/,
+      NODE_MODULES_RE,
+      DOT_GIT_RE,
     ],
     persistent: true,
   })

src/cli/commands/init.ts

@@ -12,6 +12,8 @@ import { basename, join, relative, resolve } from 'pathe'
 import { LOG_TAG } from '../../core/constants'
 
 const logger = consola.withTag(LOG_TAG)
+const NON_ALPHANUMERIC_HYPHEN_RE = /[^a-z0-9-]/gi
+const LEADING_TRAILING_HYPHENS_RE = /^-+|-+$/g
 
 /**
  * Available templates from the examples directory
@@ -121,8 +123,8 @@ export async function initFromTemplate(
       try {
         const packageJson = JSON.parse(readFileSync(packageJsonPath, 'utf-8'))
         const slug = basename(projectName)
-          .replace(/[^a-z0-9-]/gi, '-')
-          .replace(/^-+|-+$/g, '')
+          .replace(NON_ALPHANUMERIC_HYPHEN_RE, '-')
+          .replace(LEADING_TRAILING_HYPHENS_RE, '')
           .toLowerCase()
 
         packageJson.name = slug || 'my-graphql-app'

src/cli/server/debug-handler.ts

@@ -46,7 +46,7 @@ async function collectDebugInfo(ctx: CLIContext): Promise<DebugInfo> {
   // Process resolver files for display
   const resolverFiles = resolversResult.items.map((r) => {
     const parts = r.specifier.split('/')
-    const fileName = parts[parts.length - 1] || r.specifier
+    const fileName = parts.at(-1) || r.specifier
 
     return {
       file: fileName,

src/core/codegen/runtime.ts

@@ -6,6 +6,10 @@
 import type { ScannedResolver } from '../types'
 import { relative } from 'pathe'
 
+const TS_EXTENSION_RE = /\.ts$/
+const BACKTICK_RE = /`/g
+const DOLLAR_SIGN_RE = /\$/g
+
 /**
  * Generate resolver module code
  * Outputs Nitro-compatible format with { resolver: ... } wrapper
@@ -26,7 +30,7 @@ export const resolvers = []
 
   for (const resolver of resolvers) {
     // Calculate relative path from baseDir to resolver file
-    const relativePath = relative(baseDir, resolver.specifier).replace(/\.ts$/, '')
+    const relativePath = relative(baseDir, resolver.specifier).replace(TS_EXTENSION_RE, '')
 
     // Get all export names
     const exportNames = resolver.imports.map(i => i.name)
@@ -62,7 +66,7 @@ ${reexports.join('\n')}
  */
 export function generateSchemaModule(schemaString: string): string {
   // Escape backticks in schema string
-  const escapedSchema = schemaString.replace(/`/g, '\\`').replace(/\$/g, '\\$')
+  const escapedSchema = schemaString.replace(BACKTICK_RE, '\\`').replace(DOLLAR_SIGN_RE, '\\$')
 
   return `// Auto-generated by nitro-graphql - do not edit
 export const schemaString = \`

src/core/debug/template.ts

@@ -39,6 +39,9 @@ export interface DebugInfo {
   virtualModules: Record<string, string>
 }
 
+const HTML_SPECIAL_CHARS_RE = /[&<>"']/g
+const DOUBLE_QUOTE_RE = /"/g
+
 /**
  * Escape HTML special characters
  */
@@ -50,7 +53,7 @@ export function escapeHtml(text: string): string {
     '"': '&quot;',
     '\'': '&#039;',
   }
-  return text.replace(/[&<>"']/g, m => map[m] || m)
+  return text.replace(HTML_SPECIAL_CHARS_RE, m => map[m] || m)
 }
 
 /**
@@ -189,7 +192,7 @@ function renderVirtualModules(virtualModules: Record<string, string>): string {
           </div>
           <button
             onclick="event.stopPropagation(); navigator.clipboard.writeText(this.getAttribute('data-code')); this.textContent = '✓ Copied!'; setTimeout(() => this.textContent = 'Copy', 1000)"
-            data-code="${escapeHtml(code).replace(/"/g, '&quot;')}"
+            data-code="${escapeHtml(code).replace(DOUBLE_QUOTE_RE, '&quot;')}"
             class="text-xs px-3 py-1.5 bg-slate-800 hover:bg-slate-700 text-slate-300 rounded border border-slate-600/50 transition-colors"
           >
             Copy