[Bug] vendor.js grows by 52 KB in production minified build in 5.6.0 compared to 5.5.0

[boris-petrov]

🐞 Describe the Bug

I updated Ember from 5.5.0 to 5.6.0 and my build failed because vendor.js in a production (minified) build grew by 52 KB.

🔬 Minimal Reproduction

ember new ember-test --pnpm
cd ember-test
ember serve --environment=production

Copy the dist/assets/vendor-*.js somewhere. Downgrade ember-source to 5.5.0. Run a prod build again. Compare the two vendor-XXX.js files.

😕 Actual Behavior

vendor.js is 52 KB more.

🤔 Expected Behavior

No such huge difference.

🌍 Environment

• Ember: 5.6.0
• Node.js/npm: v21.6.1
• OS: Linus
• Browser: N/A

A bit of discussion:
https://discord.com/channels/480462759797063690/1199763691101503488

cc @wycats, @NullVoxPopuli

[boris-petrov]

Perhaps @ef4 might have an idea?

[NullVoxPopuli]

I mean, the biggest thing that changed were some glimmer-vm upgrades, so it's possible that that caused the bloat.

It would be great to see some bundle analysis

[boris-petrov]

5.7.0 is 5kb less than 5.6.0. But still lots more than 5.5.0. 😢