Fix linting issues (#1347)

* Fix linting issues

* Apply formatting changes

packages/rrweb/src/index.ts

@@ -8,7 +8,7 @@ export {
   IncrementalSource,
   MouseInteractions,
   ReplayerEvents,
-  type eventWithTime
+  type eventWithTime,
 } from '@rrweb/types';
 
 export type { recordOptions } from './types';

packages/rrweb/src/record/observer.ts

@@ -1297,9 +1297,13 @@ export function initObservers(
   const inputHandler = initInputObserver(o);
   const mediaInteractionHandler = initMediaInteractionObserver(o);
 
+  // eslint-disable-next-line @typescript-eslint/no-empty-function
   let styleSheetObserver = () => {};
+  // eslint-disable-next-line @typescript-eslint/no-empty-function
   let adoptedStyleSheetObserver = () => {};
+  // eslint-disable-next-line @typescript-eslint/no-empty-function
   let styleDeclarationObserver = () => {};
+  // eslint-disable-next-line @typescript-eslint/no-empty-function
   let fontObserver = () => {};
   if (o.recordDOM) {
     styleSheetObserver = initStyleSheetObserver(o, { win: currentWindow });