fix: refresh expired preview tokens

[ascorbic]

Currently the proxy catches expired preview tokens by detecting the error message, and dispatching an event. However currently the event handler is not implemented. This PR implements token refresh by storing the latest bundle and config and then using them to re-run this.#previewToken. I've extracted the call so it can be used in both onBundleComplete and in the new refresh handler. After refreshing, we dispatch reloadComplete with the new credentials.

Fixes [CUSTESC-56000]

---

• Tests
  • Tests included
  • Tests not necessary because:
• Public documentation
  • Cloudflare docs PR(s):
  • Documentation not necessary because: bug fix
• Wrangler V3 Backport
  • Wrangler PR:
  • Not necessary because: bug doesn't exist in v3

[changeset-bot]

🦋 Changeset detected

Latest commit: 02685bf

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

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[pkg-pr-new]

create-cloudflare

npm i https://pkg.pr.new/create-cloudflare@11236

@cloudflare/kv-asset-handler

npm i https://pkg.pr.new/@cloudflare/kv-asset-handler@11236

miniflare

npm i https://pkg.pr.new/miniflare@11236

@cloudflare/pages-shared

npm i https://pkg.pr.new/@cloudflare/pages-shared@11236

@cloudflare/unenv-preset

npm i https://pkg.pr.new/@cloudflare/unenv-preset@11236

@cloudflare/vite-plugin

npm i https://pkg.pr.new/@cloudflare/vite-plugin@11236

@cloudflare/vitest-pool-workers

npm i https://pkg.pr.new/@cloudflare/vitest-pool-workers@11236

@cloudflare/workers-editor-shared

npm i https://pkg.pr.new/@cloudflare/workers-editor-shared@11236

@cloudflare/workers-utils

npm i https://pkg.pr.new/@cloudflare/workers-utils@11236

wrangler

npm i https://pkg.pr.new/wrangler@11236

commit: 02685bf

[ascorbic]

This is still failing, so taking back to draft

[ascorbic]

I have tested locally with a synthetic copy of the error page. Currently waiting an hour for the real timeout to test that.

[github-actions]

Failed to automatically backport this PR's changes to Wrangler v3. Please manually create a PR targeting the v3-maintenance branch with your changes. Thank you for helping us keep Wrangler v3 supported!

Depending on your changes, running git rebase --onto v3-maintenance main mk/wrangler/refresh-token might be a good starting point.

Notes:

• your PR branch should be named v3-backport-11236
• add the skip-v3-pr label to the current PR to stop this workflow from failing