EVENT_SOURCE_TYPE
EVENT_SOURCE_TYPE is a lint warning: an explicit source frame has the wrong domain type for its target.
What triggers it. A command sourced from something other than UI/processor, an event from something other than a command, a read model from something other than an event, or UI/processor from something other than a read model.
How to fix it. Correct the source reference or the authored frame type. Keep the connection when it deliberately documents a domain violation; the diagnostic remains advisory.
Minimal reproducer
This source triggers EVENT_SOURCE_TYPE — checked at build time against the same engine the editor runs.
eventmodeling
tf 01 rmo CartItems
tf 02 evt CartChanged ->> 01Open this reproducer in the editor
Run am verify diagram.mmd --json, inspect this code, and apply the smallest source or typed mutation that clears it. If it persists after two mechanical attempts, return the warning and ask for human review.
In the cloned repo, am is bun run bin/am.ts.
Machine-readable: this page as Markdown.
Back to all warning codes, or open a blank editor to try a fix.