claude code drop from npm

hooks/useAfterFirstRender.ts

@@ -0,0 +1,17 @@
+import { useEffect } from 'react'
+import { isEnvTruthy } from '../utils/envUtils.js'
+
+export function useAfterFirstRender(): void {
+  useEffect(() => {
+    if (
+      process.env.USER_TYPE === 'ant' &&
+      isEnvTruthy(process.env.CLAUDE_CODE_EXIT_AFTER_FIRST_RENDER)
+    ) {
+      process.stderr.write(
+        `\nStartup time: ${Math.round(process.uptime() * 1000)}ms\n`,
+      )
+      // eslint-disable-next-line custom-rules/no-process-exit
+      process.exit(0)
+    }
+  }, [])
+}