fix(dev): multiple server instances being created when editing config…

… too quickly (#3835)

src/node/cli.ts

@@ -20,6 +20,8 @@ if (root) {
  argv.root = root
 }
 
+let restartPromise: Promise<void> | undefined
+
 if (!command || command === 'dev') {
  if (argv.force) {
  delete argv.force
@@ -28,8 +30,16 @@ if (!command || command === 'dev') {
 
  const createDevServer = async () => {
  const server = await createServer(root, argv, async () => {
- await server.close()
- await createDevServer()
+ if (!restartPromise) {
+ restartPromise = (async () => {
+ await server.close()
+ await createDevServer()
+ })().finally(() => {
+ restartPromise = undefined
+ })
+ }
+
+ return restartPromise
  })
  await server.listen()
  logVersion(server.config.logger)