fix memory profiling race condition (#211)

vzaidman · web-flow · commit 54afd8765db3 · 2025-10-13T20:50:57.000+01:00
diff --git a/front_end/entrypoints/heap_snapshot_worker/HeapSnapshotLoader.ts b/front_end/entrypoints/heap_snapshot_worker/HeapSnapshotLoader.ts
@@ -72,6 +72,8 @@ export class HeapSnapshotLoader {
   }
 
   async buildSnapshot(secondWorker: MessagePort): Promise<JSHeapSnapshot> {
+    await this.parsingComplete;
+
     this.#snapshot = this.#snapshot || {};
 
     this.#progress.updateStatus('Processing snapshot…');

Original file line number	Diff line number	Diff line change
`@@ -72,6 +72,8 @@ export class HeapSnapshotLoader {`
`72`	`72`	`}`
`73`	`73`
`74`	`74`	`async buildSnapshot(secondWorker: MessagePort): Promise<JSHeapSnapshot> {`
	`75`	`+ await this.parsingComplete;`
	`76`	`+`
`75`	`77`	`this.#snapshot = this.#snapshot \|\| {};`
`76`	`78`
`77`	`79`	`this.#progress.updateStatus('Processing snapshot…');`