fix(common): fix type errors in test helper

[eunjae-lee]

What?

This PR fixes type errors from #307.

[vercel[bot]]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
plugin-sandbox	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 30, 2023 3:24pm

[eunjae-lee]

Current dependencies on/for this PR:

• main
  • PR #304
  • PR #307
    • PR #320 👈
    • PR #316
    • PR #317

This stack of pull requests is managed by Graphite.