fix: prevent mem leaks by removing unloaded iframes from map

[megboehlert]

No description provided.

[changeset-bot]

🦋 Changeset detected

Latest commit: 9cb6057

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 19 packages

Name	Type
rrweb	Patch
rrweb-snapshot	Patch
rrdom	Patch
rrdom-nodejs	Patch
rrweb-player	Patch
@rrweb/all	Patch
@rrweb/replay	Patch
@rrweb/record	Patch
@rrweb/types	Patch
@rrweb/packer	Patch
@rrweb/utils	Patch
@rrweb/web-extension	Patch
rrvideo	Patch
@rrweb/rrweb-plugin-console-record	Patch
@rrweb/rrweb-plugin-console-replay	Patch
@rrweb/rrweb-plugin-sequential-id-record	Patch
@rrweb/rrweb-plugin-sequential-id-replay	Patch
@rrweb/rrweb-plugin-canvas-webrtc-record	Patch
@rrweb/rrweb-plugin-canvas-webrtc-replay	Patch

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[Copilot]

Pull Request Overview

Adds cleanup logic to remove iframe window references from crossOriginIframeMap on iframe unload to address potential memory leaks.

• Wraps existing message listener registration in braces and adds an unload event listener.
• Introduces a changeset entry documenting the patch.

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
packages/rrweb/src/record/iframe-manager.ts	Adds unload listener to delete iframe window from tracking map.
.changeset/shy-carrots-deny.md	Records patch change note about memory leak fix.

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[Copilot]

The unload handler deletes using iframeEl.contentWindow at execution time, which may already point to a new Window after a navigation, leaving the original (unloaded) window object still stored in crossOriginIframeMap. Capture the original window reference before registering the listener and delete that specific reference instead.

Suggested change

	iframeEl.contentWindow?.addEventListener('unload', () => {
	this.crossOriginIframeMap.delete(iframeEl.contentWindow!);
	});
	if (iframeEl.contentWindow) {
	const win = iframeEl.contentWindow;
	win.addEventListener('unload', () => {
	this.crossOriginIframeMap.delete(win);
	});
	}