Function shallowPropagate

src/system.ts:239–250

(link: Link)

	}

	function shallowPropagate(link: Link): void {
		do {
			const sub = link.sub;
			const flags = sub.flags;
			if ((flags & (ReactiveFlags.Pending | ReactiveFlags.Dirty)) === ReactiveFlags.Pending) {
				sub.flags = flags | ReactiveFlags.Dirty;
				if ((flags & (ReactiveFlags.Watching | ReactiveFlags.RecursedCheck)) === ReactiveFlags.Watching) {
					notify(sub);
				}
			}
		} while ((link = link.nextSub!) !== undefined);
	}

	function isValidLink(checkLink: Link, sub: ReactiveNode): boolean {
		let link = sub.depsTail;