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[Workers] Announce module registry default on November 17 - #34425

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@irvinebroque

@irvinebroque irvinebroque commented Oct 17, 2026 •

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Announce that the new JavaScript module registry becomes the default for compatibility dates on or after November 17, 2026. Add compatibility-flag documentation and migration guidance, update the bundling reference, and add a November 2 advance changelog with an import.meta example and guidance for opting in early or retaining the legacy registry. Python Workers retain the legacy registry.

Companion runtime PR: cloudflare/workerd#7799. Publish the documentation before November 17 so developers can test ahead of the default change. The changelog date is the announcement date; the compatibility boundary is November 17. Migration guidance covers import-attribute validation, require(esm) return values, top-level await, and legacy-registry-only flags.

Validation: Astro and Worker type checks, changelog Prettier formatting, and git diff --check pass. Full-site builds were not completed locally.

Documentation checklist

  • Includes a changelog entry.
  • Follows the documentation style guide.

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cloudflare-workers-and-pages Bot commented Oct 17, 2026 •

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@irvinebroque
irvinebroque requested a review from jasnell October 17, 2026 17:07
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@irvinebroque This draft pull request has had no activity for 3 days. It will close after 7 days of inactivity. Transition to ready for review if ready. A codeowner can comment /draft-never-stale to keep it open.

@irvinebroque irvinebroque changed the title [Workers] Announce module registry default on November 1 [Workers] Announce module registry default on November 8 Oct 23, 2026
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@irvinebroque This draft pull request has had no activity for 3 days. It will close after 7 days of inactivity. Transition to ready for review if ready. A codeowner can comment /draft-never-stale to keep it open.

@irvinebroque irvinebroque changed the title [Workers] Announce module registry default on November 8 [Workers] Announce module registry default on November 12 Oct 30, 2026
@irvinebroque irvinebroque changed the title [Workers] Announce module registry default on November 12 [Workers] Announce module registry default on November 17 Oct 31, 2026
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irvinebroque marked this pull request as ready for review October 31, 2026 20:02
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cloudflare-docs-bot Bot commented Oct 31, 2026 •

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AI Review

✅ Reviewed c25942a · 1 finding · incremental

👉 Fix in your agent 👈
Fix the following review findings in PR #34425 (https://github.com/cloudflare/cloudflare-docs/pull/34425).

Before making changes, review each finding and present a brief summary table:
- For each finding, state whether you agree, disagree, or need clarification.
- If you disagree, explain why.
- If you need clarification before deciding, ask those questions.
- Then share your plan for which issues to tackle and in what order.

After triaging, follow this order:
1. Post a comment on this PR for any findings you are skipping, with the finding ID and your reasoning.
2. Then commit the fixes for the legitimate findings.

The comment must come before the commit because the next review reads PR comments.

## Style Guide
- S-1e4fdef2 | src/content/docs/workers/wrangler/bundling.mdx:30 | Time-sensitive month and year in prose
  Per the time-sensitive content rule, prose outside `src/content/changelog/` must not contain month names or four-digit years. `November 17, 2026` appears in plain prose here (not in a code block, backtick span, frontmatter field, URL, or example data).

Style Guide

  • src/content/docs/workers/wrangler/bundling.mdx:30 · Time-sensitive month and year in prose

    Per the time-sensitive content rule, prose outside src/content/changelog/ must not contain month names or four-digit years. November 17, 2026 appears in plain prose here (not in a code block, backtick span, frontmatter field, URL, or example data).

Commands
  • /review Run a review now.
  • /full-review Review the entire PR diff.
  • /disable-auto-review Stop automatic reviews.
  • /rebase Rebase against production.

@irvinebroque

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@jasnell I am merging docs change that announces Nov 17th, so that this can land

@irvinebroque
irvinebroque added this pull request to the merge queue Nov 2, 2026
Merged via the queue into production with commit 60093b3 Nov 2, 2026
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@irvinebroque
irvinebroque deleted the codex/module-registry-default-docs branch November 2, 2026 17:58
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