Add observers for stylesheet mutations (#177)

* hack together stylesheet observer

* Add test coverage for insertRule/deleteRule on stylesheets

* Add new observers

* update patch based on changes to master

* Functioning event recording

* Remove print statements

* Fix ID usage and mark add vs remove

* Correct type

Co-authored-by: Jon Perl <perl.jonathan@gmail.com>

src/record/index.ts

@@ -82,9 +82,11 @@ function record(options: recordOptions = {}): listenerHandler | undefined {
       inlineStylesheet,
       maskAllInputs,
     );
+
     if (!node) {
       return console.warn('Failed to snapshot the document');
     }
+
     mirror.map = idNodeMap;
     wrappedEmit(
       wrapEvent({
@@ -188,6 +190,16 @@ function record(options: recordOptions = {}): listenerHandler | undefined {
                   },
                 }),
               ),
+            styleSheetRuleCb: r =>
+              wrappedEmit(
+                wrapEvent({
+                  type: EventType.IncrementalSnapshot,
+                  data: {
+                    source: IncrementalSource.StyleSheetRule,
+                    ...r,
+                  },
+                }),
+              ),
             blockClass,
             ignoreClass,
             maskAllInputs,