Adds scripts/validate-cloudflared-config.mjs — a node-only validator
that lint-staged runs whenever cloudflared-config.yml is staged. The
goal is to catch the same failure modes that
`cloudflared tunnel ingress validate` would catch on the server, but
without requiring cloudflared to be installed on every dev box.
Checks:
- YAML parses
- tunnel: is a uuid
- credentials-file: ends with .json and contains the tunnel id
(warning when it doesn't — likely an out-of-sync remnant from a
previous rebuild, exactly the failure mode that bit us in the
first locally-managed switch)
- ingress: is a non-empty array
- every rule except the last has both hostname AND service
- the LAST rule is the catch-all `service: http_status:NNN`
- no duplicate hostnames (the most common copy-paste mistake)
- service URLs look like http(s):// / ssh:// / http_status:NNN
/ unix:/ / hello_world
- hostnames are lowercase dot-separated DNS labels (no spaces, no
weird characters)
Wired into lint-staged.config.js with a single glob entry; the
existing eslint + prettier flow is unchanged.
Tested against the live cloudflared-config.yml (passes, 51 hostnames)
and a synthetic broken file (catches all 6 categories of error +
the credentials-file/tunnel id drift warning).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
