Make comment more verbose for racing

vercel · Feb 5, 2020 · 70546aa · 70546aa
1 parent fc21a4b
commit 70546aa
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/packages/next/next-server/lib/router/router.ts b/packages/next/next-server/lib/router/router.ts
@@ -427,8 +427,10 @@ export default class Router implements BaseRouter {
 
  if ((routeInfo as any).dataRes) {
  const dataRes = (routeInfo as any).dataRes as Promise<RouteInfo>
- // race loading state timeout with data response
 
+ // to prevent a flash of the fallback page we delay showing it for
+ // 110ms and race the timeout with the data response. If the data
+ // beats the timeout we skip showing the fallback
  Promise.race([
  new Promise(resolve => setTimeout(() => resolve(false), 110)),
  dataRes,