DevTools Profiler: Fix "cannot read property 'memoizedState' of null" (facebook#18522)

Brian Vaughn · web-flow · commit 8edcd03b6450 · 2020-04-07T10:30:25.000-07:00
diff --git a/packages/react-devtools-shared/src/backend/renderer.js b/packages/react-devtools-shared/src/backend/renderer.js
@@ -918,7 +918,7 @@ export function attach(
   }
 
   function didHooksChange(prev: any, next: any): boolean {
-    if (next == null) {
+    if (prev == null || next == null) {
       return false;
     }
 

Original file line number	Diff line number	Diff line change
`@@ -918,7 +918,7 @@ export function attach(`
`918`	`918`	`}`
`919`	`919`
`920`	`920`	`function didHooksChange(prev: any, next: any): boolean {`
`921`		`- if (next == null) {`
	`921`	`+ if (prev == null \|\| next == null) {`
`922`	`922`	`return false;`
`923`	`923`	`}`
`924`	`924`