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D1 Migration Guard
Catch D1 migration bugs before wrangler apply does
d1-migration-guard is a free, zero-dependency CLI that catches common Cloudflare D1 migration problems before wrangler d1 migrations apply does. It checks numbering, database config, destructive SQL, and trigger definitions that break Wrangler's SQL splitter. It only reads local files—never Wrangler or your database. MIT licensed, no signup, telemetry, or paid tier. Built to catch real, still-open Wrangler bugs.
Hey Product Hunt — I built this after noticing Cloudflare's own D1/Wrangler
issue tracker had several long-open, unfixed reports of migrations
silently doing the wrong thing (bad ordering, missing config, destructive
SQL with no warning). Wrangler doesn't check for any of this before
`apply`, so I wrote a small local-only CLI that does, and made it free
because it's a narrow, real gap, not a business on its own. Feedback (and
bug reports against your own migration setups) genuinely welcome — this is
a side project, not a company, so I'm mostly looking to make it actually
useful to people who hit these bugs before they do.
About D1 Migration Guard on Product Hunt
“Catch D1 migration bugs before wrangler apply does”
D1 Migration Guard was submitted on Product Hunt and earned 2 upvotes and 1 comments, placing #113 on the daily leaderboard. d1-migration-guard is a free, zero-dependency CLI that catches common Cloudflare D1 migration problems before wrangler d1 migrations apply does. It checks numbering, database config, destructive SQL, and trigger definitions that break Wrangler's SQL splitter. It only reads local files—never Wrangler or your database. MIT licensed, no signup, telemetry, or paid tier. Built to catch real, still-open Wrangler bugs.
On the analytics side, D1 Migration Guard competes within Developer Tools and GitHub — topics that collectively have 560.4k followers on Product Hunt. The dashboard above tracks how D1 Migration Guard performed against the three products that launched closest to it on the same day.
Who hunted D1 Migration Guard?
D1 Migration Guard was hunted by Matt Bridges. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of D1 Migration Guard including community comment highlights and product details, visit the product overview.
Matt Bridges