feat: add source param to the deadlink check fn (#4870)

Author: bojanrajh

src/node/markdownToVue.ts

@@ -189,13 +189,13 @@ export async function createMarkdownToVueRenderFn(
           return ignore.test(url)
         }
         if (typeof ignore === 'function') {
-          return ignore(url)
+          return ignore(url, fileOrig)
         }
         return false
       })
     }
 
-    if (links) {
+    if (links && siteConfig?.ignoreDeadLinks !== true) {
       const dir = path.dirname(file)
       for (let url of links) {
         const { pathname } = new URL(url, 'http://a.com')

src/node/siteConfig.ts

@@ -114,7 +114,7 @@ export interface UserConfig<ThemeConfig = any>
   ignoreDeadLinks?:
     | boolean
     | 'localhostLinks'
-    | (string | RegExp | ((link: string) => boolean))[]
+    | (string | RegExp | ((link: string, source: string) => boolean))[]
 
   /**
    * Don't force `.html` on URLs.