r.hook(...)
Overview
Section titled “Overview”r.hook(type, target, fn, options?) — attaches a lifecycle hook
(validation, preSave, postSave, preDelete, postDelete,
postQuery) to one or more target handlers, or — for
postSave/preDelete/postDelete/postQuery — to { allOf: entityRef }
(“every write/query handler of this entity”, replacing the old
r.entityHook(type, entity, fn)). Post-hooks accept a phase option;
preDelete always runs in-transaction — it guards the delete. The hook
body is an opaque code span.
From packages/feature-ast/src/patterns.ts -> HookPattern