Edge runtimes

Cloudflare Workers, D1 and Turso are first-class Drizzle targets, and the code DRZL emits runs on them unchanged. That is asserted by the gate rather than assumed.

What is checked

A Worker has no Node builtins. An import 'node:crypto' there is a deploy-time failure, not a runtime one, so it is not something your own tests would catch either: it surfaces the first time you push.

Every run of verify-packed.sh scans the whole emitted tree and fails if any file imports a Node builtin, by its node: spelling or its bare name. The scan covers every generator kind the consumer fixture runs, and it refuses to pass on an empty tree, because a grep over nothing succeeds exactly as loudly as a grep over something clean. It also plants a file that does import one and checks the pattern catches it, so a broken expression cannot pass by matching nothing.

What is not checked, and why

The generators themselves import node:path and node:fs freely, and must. They run at build time on Node, alongside drizzle-kit. What has to be portable is the text they write, which is what the gate looks at.

nodejs_compat exists and many Workers projects enable it. The emitted output is still held to the stricter bar, because a generator has no way to know whether a given consumer turned it on, and emitting something that needs a flag nobody asked for is a requirement that surfaces on someone's first deploy rather than in their editor.

Bun and Deno

Both are covered separately, by scripts/runtime-compat.sh, which runs as its own CI job. It packs the built packages, installs them into a throwaway app and runs the CLI and the emitted schemas under each runtime.

That gate exists because of a real disagreement rather than for completeness: Bun's resolver answers a missing package by installing it from npm, so @biomejs/biome was auto-installed mid-generate and reformatted the output on a project that had never depended on it. drzl generate --check under Node then called every file out of date. Nothing else in CI would have noticed.