From f17e234b6e563c5c5a1df80fc67f0a34ee51d79a Mon Sep 17 00:00:00 2001
From: Takahiro Ebato <takahiro.ebato@gmail.com>
Date: Tue, 10 Dec 2024 23:00:54 +0900
Subject: [PATCH] Make watch command require tasks argument

---
 crates/turborepo-lib/src/cli/mod.rs | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/crates/turborepo-lib/src/cli/mod.rs b/crates/turborepo-lib/src/cli/mod.rs
index 4082a63a6fceb..88a8e84b54645 100644
--- a/crates/turborepo-lib/src/cli/mod.rs
+++ b/crates/turborepo-lib/src/cli/mod.rs
@@ -1469,10 +1469,15 @@ pub async fn run(
 
             Ok(query)
         }
-        Command::Watch(_) => {
+        Command::Watch(execution_args) => {
             let event = CommandEventBuilder::new("watch").with_parent(&root_telemetry);
             event.track_call();
-            let base = CommandBase::new(cli_args, repo_root, version, color_config)?;
+            let base = CommandBase::new(cli_args.clone(), repo_root, version, color_config)?;
+
+            if execution_args.tasks.is_empty() {
+                print_potential_tasks(base, event).await?;
+                return Ok(1);
+            }
 
             let mut client = WatchClient::new(base, event).await?;
             if let Err(e) = client.start().await {