From c2fb406ccc6d48688f376c8b955ae51328bee70a Mon Sep 17 00:00:00 2001
From: Tat Dat Duong <david@duong.cz>
Date: Mon, 31 Mar 2025 17:02:07 +0200
Subject: [PATCH] Add behind `dev` subcommand

---
 libs/langgraph-ui/src/cli.mts | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/libs/langgraph-ui/src/cli.mts b/libs/langgraph-ui/src/cli.mts
index 2fbdbbf..34b6ea6 100644
--- a/libs/langgraph-ui/src/cli.mts
+++ b/libs/langgraph-ui/src/cli.mts
@@ -5,8 +5,10 @@ import * as path from "node:path";
 
 import { z } from "zod";
 
-const cwd = process.cwd();
+const cmd = process.argv.at(-1);
+if (cmd !== "dev") throw new Error(`Invalid command "${cmd}"`);
 
+const cwd = process.cwd();
 const defs = z
   .record(z.string(), z.string())
   .parse(JSON.parse(process.env.LANGGRAPH_UI || "{}"));