Extended text masking function to include relevant HTMLElement (#1310)

* Extends maskTextFn to pass the HTMLElement to the deciding function

---------

Authored-by: benjackwhite <benjackwhite@users.noreply.github.com>
Co-authored-by: Justin Halsall <Juice10@users.noreply.github.com>
Co-authored-by: Eoghan Murray <eoghan@getthere.ie>

packages/rrweb-snapshot/src/snapshot.ts

@@ -575,7 +575,7 @@ function serializeTextNode(
     needMaskingText(n, maskTextClass, maskTextSelector)
   ) {
     textContent = maskTextFn
-      ? maskTextFn(textContent)
+      ? maskTextFn(textContent, n.parentElement)
       : textContent.replace(/[\S]/g, '*');
   }
 

packages/rrweb-snapshot/src/types.ts

@@ -153,7 +153,7 @@ export type DataURLOptions = Partial<{
   quality: number;
 }>;
 
-export type MaskTextFn = (text: string) => string;
+export type MaskTextFn = (text: string, element: HTMLElement | null) => string;
 export type MaskInputFn = (text: string, element: HTMLElement) => string;
 
 export type KeepIframeSrcFn = (src: string) => boolean;