Merge pull request #27868 from overleaf/dp-pdf-preview-2-typescript

Convert DocumentCompiler class to typescript

GitOrigin-RevId: 6a0d72f7e0cc319c9166ee6236380f6af5187dbb

services/web/frontend/js/shared/context/local-compile-context.tsx

@@ -45,6 +45,7 @@ import {
   usePdfScrollPosition,
 } from '@/shared/hooks/use-pdf-scroll-position'
 import {
+  DeliveryLatencies,
   HighlightData,
   LogEntry,
   PdfFileDataList,
@@ -190,7 +191,9 @@ export const LocalCompileProvider: FC<React.PropsWithChildren> = ({
   const [firstRenderDone, setFirstRenderDone] = useState(() => () => {})
 
   // latencies of compile/pdf download/rendering
-  const [deliveryLatencies, setDeliveryLatencies] = useState({})
+  const [deliveryLatencies, setDeliveryLatencies] = useState<DeliveryLatencies>(
+    {}
+  )
 
   // whether the project has been compiled yet
   const [compiledOnce, setCompiledOnce] = useState(false)
@@ -462,7 +465,7 @@ export const LocalCompileProvider: FC<React.PropsWithChildren> = ({
   // these are refs rather than state so they don't trigger the effect to run
   const previousRuleCountsRef = useRef<{
     ruleCounts: Record<string, number>
-    rootDocId: string
+    rootDocId: string | null | undefined
   } | null>(null)
   const recordedActionsRef = useRef<Record<string, boolean>>({})
   const recordAction = useCallback((action: string) => {