Support nodejs_compat being on by default

[jamesopstad]

Enable Node.js compatibility by default for compatibility dates of 2026-08-04 or later

Workers with a compatibility date of 2026-08-04 or later now have Node.js compatibility enabled automatically. Previously the nodejs_compat flag had to be set explicitly.

Set the no_nodejs_compat compatibility flag to opt out.

// wrangler.json
{
	"compatibility_date": "2026-08-04",
	"compatibility_flags": ["no_nodejs_compat"]
}

---

• 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: already being documented

A picture of a cute animal (not mandatory, but encouraged)

[changeset-bot]

🦋 Changeset detected

Latest commit: e22c6f5

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

This PR includes changesets to release 8 packages

Name	Type
miniflare	Minor
wrangler	Minor
@cloudflare/deploy-helpers	Patch
@cloudflare/pages-shared	Patch
@cloudflare/remote-bindings	Patch
@cloudflare/runtime-types	Patch
@cloudflare/vite-plugin	Patch
@cloudflare/vitest-pool-workers	Patch

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[jamesopstad]

It doesn't seem right to me that this function lives in Miniflare. It should probably be in workers-utils but I haven't changed that in this PR.