LanguageClient get stuck in starting state with socket transport kind

[SciCed]

I'm writing an LSP extension that uses socket transport kind.
When the command in the server option exits with a nonnull code, the LanguageClient gets stuck in start().

const serverOptions = {
	"command": "node",
	"args": ["-e", "process.exit(42)"],
	transport: {
		kind: TransportKind.socket,
		port: 8080
	}
}
const clientOptions = {}

lspClient = new LanguageClient(
	"MylanguageServer",
	"My Language Server",
	serverOptions,
	clientOptions
);

lspClient.onDidChangeState((state) => {
	const states = ["Stopped", "Running", "Starting"];
	console.log(`State change from ${states[state.oldState-1]} to ${states[state.newState-1]}`)
})

lspClient.start();

I expect that the start fails if the command fails.
I tried to investigate. The start() seems to be waiting for a connection before registering on the exit event of the spawned process.