Thank you for your contribution!

Since this is performance critical code, can you please change the following:

vscode-gitlens/src/annotations/lineAnnotationController.ts

Lines 255 to 265 in 2e77698

	const commitLines = [
	...filterMap<LineSelection, [number, GitCommit]>(selections, selection => {
	const state = this.container.lineTracker.getState(selection.active);
	if (state?.commit == null) {
	Logger.debug(scope, `Line ${selection.active} returned no commit`);
	return undefined;
	}
	return [selection.active, state.commit];
	}),
	];

To:

		const commitLines = new Map<number, GitCommit>();
		for (const selection of selections) {
			const state = this.container.lineTracker.getState(selection.active);
			if (state?.commit == null) {
				Logger.debug(scope, `Line ${selection.active} returned no commit`);
				continue;
			}

			commitLines.set(selection.active, state.commit);
		}

And then:

vscode-gitlens/src/annotations/lineAnnotationController.ts

Lines 284 to 288 in 2e77698

	this.getPullRequests(
	repoPath,
	commitLines.filter(([, commit]) => !commit.isUncommitted),
	{ timeout: timeout },
	)

To:

				  this.getPullRequests(repoPath, [...filter(commitLines, ([, commit]) => !commit.isUncommitted)], {
						timeout: timeout,
				  })

Thanks!

Thank you for the detailed solution! I've pushed your suggestions

Thank you for your contribution!