fix(build): explicitly exit process after build to prevent hangup (#1530)

Co-authored-by: Divyansh Singh <40380293+brc-dd@users.noreply.github.com>

.gitignore

@@ -12,3 +12,4 @@ pnpm-global
 TODOs.md
 .temp
 *.tgz
+examples-temp

src/node/cli.ts

@@ -28,7 +28,11 @@ if (!command || command === 'dev') {
     process.exit(1)
   })
 } else if (command === 'build') {
-  build(root, argv).catch((err) => {
+  build(root, argv)
+    .then(() => {
+      process.exit()
+    })
+    .catch((err) => {
       console.error(c.red(`build error:\n`), err)
       process.exit(1)
     })