ci: alias PR preview deployments to the PR number#57
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Cloudflare has no API or CLI to delete individual Worker versions, so PR preview deployments can't be cleaned up on merge/close. Using --preview-alias pins each PR to a stable, reused preview URL instead of minting a brand new version+URL on every push, which at least slows the buildup instead of one version per commit.
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🚀 Preview deployed: https://pr-57-wibrow-dev.sam-wibrow.workers.dev |
deployment-url is the per-commit version URL, which still changes on every push even with --preview-alias set - the alias only shows up in wrangler's text output as "Version Preview Alias URL". Parse it out of command-output (via env, not string-interpolated into the script) so the PR comment actually gets the stable, reused link.
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Summary
--preview-alias pr-<number>to the PR deploy command so repeated pushes to the same PR reuse one stable preview URL instead of minting a new Worker version (and URL) on every commit.Context
Cloudflare doesn't expose an API or CLI to delete individual Worker versions (confirmed against the Workers Scripts Versions API and the beta Workers Versions API — both are list/get/create only, no delete), so this can't clean up existing orphaned preview versions, and merging/closing a PR still won't trigger any deletion. This just slows the rate new ones pile up.
Test plan