fix(inspector): don't panic if port is not free (#22745)

Closes https://github.com/denoland/deno/issues/22113
Closes https://github.com/denoland/deno/issues/23177
Closes https://github.com/denoland/deno/issues/22883
Closes https://github.com/denoland/deno/issues/22377

1 files changed, 7 insertions, 2 deletions

diff --git a/cli/lsp/language_server.rs b/cli/lsp/language_server.rs
index 2e1386fd0..342c32358 100644
--- a/cli/lsp/language_server.rs
+++ b/cli/lsp/language_server.rs
@@ -971,9 +971,14 @@ impl Inner {
       self.config.update_capabilities(&params.capabilities);
     }
 
-    self
+    if let Err(e) = self
       .ts_server
-      .start(self.config.internal_inspect().to_address());
+      .start(self.config.internal_inspect().to_address())
+    {
+      lsp_warn!("{}", e);
+      self.client.show_message(MessageType::ERROR, e);
+      return Err(tower_lsp::jsonrpc::Error::internal_error());
+    };
 
     self.update_debug_flag();
     self.refresh_workspace_files();