test: Add toJSON() to tests

[Jiralite]

Resolves #11319. I believe everything has been caught.

[vercel]

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

2 Skipped Deployments

Project	Deployment	Preview	Comments	Updated (UTC)
discord-js-guide	Ignored	Preview		Nov 30, 2025 4:39pm
discord-js	Skipped			Nov 30, 2025 4:39pm

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 45.01%. Comparing base (ace834b) to head (29da1e6).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #11321      +/-   ##
==========================================
+ Coverage   43.66%   45.01%   +1.34%     
==========================================
  Files         375      317      -58     
  Lines       19348    18213    -1135     
  Branches     1884     1820      -64     
==========================================
- Hits         8449     8198     -251     
+ Misses      10886    10002     -884     
  Partials       13       13              

Flag	Coverage Δ
builders	81.36% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.