[wrangler] Add bundle sizes to structured output

[longlho]

wrangler deploy --dry-run currently reports bundle size only through human-formatted console output. CI size gates must regex that text, which is brittle.

This adds exact raw and gzip-compressed byte counts to the existing structured deploy and version-upload output records, including dry runs:

{
  "bundle_size": {
    "raw_bytes": 1234,
    "gzip_bytes": 567
  }
}

The bundle reporter now returns the measurements it already calculates, and deploy helpers pass them to Wrangler's output writer.

---

• Tests
  • Tests included/updated
  • Automated tests not possible - manual testing has been completed as follows:
  • Additional testing not necessary because:
• Public documentation
  • Cloudflare docs PR(s):
  • Documentation not necessary because: this extends Wrangler's existing machine-readable output without changing CLI usage.

Note

This is a contribution from an AI agent: Codex, GPT-5.

[changeset-bot]

🦋 Changeset detected

Latest commit: 18b6ef2

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 3 packages

Name	Type
wrangler	Minor
@cloudflare/vite-plugin	Patch
@cloudflare/vitest-pool-workers	Patch

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[workers-devprod]

Codeowners approval required for this PR:

• @cloudflare/wrangler

Show detailed file reviewers

• .changeset/tidy-ravens-report.md: [@cloudflare/wrangler]
• packages/deploy-helpers/src/deploy/deploy.ts: [@cloudflare/wrangler]
• packages/deploy-helpers/src/deploy/helpers/bundle-reporter.ts: [@cloudflare/wrangler]
• packages/deploy-helpers/src/deploy/versions-upload.ts: [@cloudflare/wrangler]
• packages/wrangler/src/tests/deploy/build.test.ts: [@cloudflare/wrangler]
• packages/wrangler/src/tests/deploy/core.test.ts: [@cloudflare/wrangler]
• packages/wrangler/src/deploy/index.ts: [@cloudflare/wrangler]
• packages/wrangler/src/deployment-bundle/bundle-reporter.ts: [@cloudflare/wrangler]
• packages/wrangler/src/dev/remote.ts: [@cloudflare/wrangler]
• packages/wrangler/src/output.ts: [@cloudflare/wrangler]
• packages/wrangler/src/versions/upload.ts: [@cloudflare/wrangler]

[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no bugs or issues to report.

[dario-piotrowicz]

Thanks for the nice improvement @longlho 🙂

I just left a small comment, please let me know what you think (besides this the PR looks good to me)

[dario-piotrowicz]

I don't tike this change at all 😕

we're taking printBundleSize and have it return a value, this doesn't seem right at all to me

also I don't understand the motivation here, instead of augmenting printBundleSize to return a value, why don't you just call getSize(...) when you need these values instead?

[dario-piotrowicz]

PS: if you want to avoid computing the sizes more than once, what I'd suggest you to do is to, instead of modifying this function to return values, modify this function to accept the size and gzipSize and print those instead of calling getSize (or have an override that does that).

[longlho]

yup makes sense, I did another pass lmk if this looks better