Function clear

source/features/clear-pr-merge-commit-message.tsx:18–60

(messageField: HTMLTextAreaElement)

const isPrAgainstDefaultBranch = async (): Promise<boolean> => getBranches().base.branch === await getDefaultBranch();

async function clear(messageField: HTMLTextAreaElement): Promise<void> {
	if (!/squash/i.test($(confirmMergeButton).textContent)) {
		return;
	}

	const originalMessage = messageField.value;
	const author = getConversationAuthor();
	let cleanedMessage = cleanCommitMessage(originalMessage, !await isPrAgainstDefaultBranch(), [author]);

	if (cleanedMessage === originalMessage.trim()) {
		return;
	}

	cleanedMessage = cleanedMessage ? cleanedMessage + '\n' : '';
	// Do not use `text-field-edit` #6348
	setReactTextareaValue(messageField, cleanedMessage);

	let isUndoing = false;
	function toggleUndoRedo({currentTarget}: React.MouseEvent<HTMLButtonElement>): void {
		isUndoing = !isUndoing;
		setReactTextareaValue(messageField, isUndoing ? originalMessage : cleanedMessage);
		currentTarget.textContent = isUndoing ? 'Redo' : 'Undo';
	}

	const anchor = closestElement('div[data-has-label]', messageField);
	attachElement(anchor, {
		after: () => (
			<div className="flex-self-stretch">
				<p className="note">
					The description field was{' '}
					<a
						target="_blank"
						href="https://github.com/refined-github/refined-github/wiki/Extended-feature-descriptions#clear-pr-merge-commit-message"
						rel="noreferrer"
					>
						cleared
					</a>{' '}
					by Refined GitHub. <button type="button" className="btn-link" onClick={toggleUndoRedo}>Undo</button>
				</p>
			</div>
		),
	});
}

async function init(signal: AbortSignal): Promise<void> {
	observe('textarea[placeholder="Add an optional extended description…"]', clear, {signal});