Function emitDelta

packages/vite/hmr/server/websocket.ts:2287–2317

(changed: GraphModule[], removed: string[])

		} catch {}
	}
	function emitDelta(changed: GraphModule[], removed: string[]) {
		if (!wss) return;
		// Record this version's txn batch order
		try {
			const changedIds = changed.map((m) => m.id);
			if (changedIds.length) {
				const ordered = computeTxnOrderForChanged(changedIds);
				txnBatches.set(graphVersion, ordered);
				// Keep only the last ~20 versions
				if (txnBatches.size > 20) {
					const drop = Array.from(txnBatches.keys())
						.sort((a, b) => a - b)
						.slice(0, txnBatches.size - 20);
					for (const k of drop) txnBatches.delete(k);
				}
			}
		} catch {}
		const payload = {
			type: 'ns:hmr-delta',
			baseVersion: graphVersion - 1,
			newVersion: graphVersion,
			changed: changed.map((m) => ({ id: m.id, deps: m.deps, hash: m.hash })),
			removed,
		};
		const json = JSON.stringify(payload);
		wss.clients.forEach((c) => {
			try {
				c.send(json);
			} catch {}
		});
	}
	function upsertGraphModule(rawId: string, code: string, deps: string[]) {
		const id = normalizeGraphId(rawId);
		const normDeps = deps