feat: support passing an ignore array of paths not to check

resolves #486

Author: danielroe

src/config.ts

@@ -29,6 +29,11 @@ export interface ModuleOptions {
   logLevel?: LogLevel
   failOnError?: boolean
   options?: ConfigData
+  /**
+   * A list of routes to ignore (that is, not check validity for)
+   * @default [/\.(xml|rss|json)$/]
+   */
+  ignore?: Array<string | RegExp>
   /**
    * allow to hook into `html-validator`
    * enabling this option block the response until the HTML check and the hook has finished
@@ -43,4 +48,5 @@ export const DEFAULTS: Required<Omit<ModuleOptions, 'logLevel'>> & { logLevel?:
   failOnError: false,
   options: defaultHtmlValidateConfig,
   hookable: false,
+  ignore: [/\.(xml|rss|json)$/],
 }

src/runtime/nitro.ts

@@ -1,6 +1,6 @@
 import type { NitroAppPlugin, RenderResponse } from 'nitropack'
 import { getRequestPath } from 'h3'
-import { useChecker, getValidator } from './validator'
+import { useChecker, getValidator, isIgnored } from './validator'
 // @ts-expect-error virtual module
 import config from '#html-validator-config'
 
@@ -9,7 +9,7 @@ export default <NitroAppPlugin> function (nitro) {
   const { checkHTML } = useChecker(validator, config.usePrettier, config.logLevel)
 
   nitro.hooks.hook('render:response', async (response: Partial<RenderResponse>, { event }) => {
-    if (typeof response.body === 'string' && (response.headers?.['Content-Type'] || response.headers?.['content-type'])?.includes('html')) {
+    if (typeof response.body === 'string' && (response.headers?.['Content-Type'] || response.headers?.['content-type'])?.includes('html') && !isIgnored(event.path, config.ignore)) {
       // Block the response only if it's not hookable
       const promise = checkHTML(getRequestPath(event), response.body)
       if (config.hookable) {

src/runtime/validator.ts

@@ -66,3 +66,7 @@ export const useChecker = (
 
   return { checkHTML, invalidPages }
 }
+
+export function isIgnored(path: string, ignore: Array<string | RegExp> = []) {
+  return ignore.some(ignore => typeof ignore === 'string' ? path === ignore : ignore.test(path))
+}