snapshot of https://github.com/RocketChat/Rocket.Chat.git (develop, 2026-09-16; blobs > 131072B omitted)

apps/meteor/client/views/room/composer/messageBox/messageBoxHelpers.ts

@@ -0,0 +1,39 @@
+import type { ComposerAPI } from '../../../../lib/chats/ChatAPI';
+import type { FormattingButton } from '../../../../lib/messageBoxFormatting';
+
+export const emptySubscribe = () => () => undefined;
+export const getEmptyFalse = () => false;
+const a: any[] = [];
+export const getEmptyArray = () => a;
+
+export const isCmdOrCtrlPressed = (event: { metaKey: boolean; ctrlKey: boolean }) => {
+	const isMacOS = navigator.platform.indexOf('Mac') !== -1;
+
+	return (isMacOS && event.metaKey) || (!isMacOS && event.ctrlKey);
+};
+
+export const handleFormattingShortcut = (
+	event: KeyboardEvent,
+	formattingButtons: FormattingButton[],
+	composer: ComposerAPI,
+	preventDefault = false,
+) => {
+	if (!isCmdOrCtrlPressed(event)) {
+		return false;
+	}
+
+	const key = event.key.toLowerCase();
+
+	const formatter = formattingButtons.find((formatter) => 'command' in formatter && formatter.command === key);
+
+	if (!formatter || !('pattern' in formatter)) {
+		return false;
+	}
+
+	if (preventDefault) {
+		event.preventDefault();
+	}
+
+	composer.wrapSelection(formatter.pattern);
+	return true;
+};