unnest "{from}" → "{to}" would close an unne...

Warnings reference › router:unnest-cycle

Identifier

router:unnest-cycle

Raised by

Data Router

Since

1.84.0

What happened

An unnest chain is a tree: a source unnests a child type, which may unnest its own. A spec whose as points back at an ancestor (or the source itself) would recurse forever, so the closing unnest is refused and the source's rows pass through unexpanded rather than the router recursing.

The fix

Point the nested unnest's as at a type that is not (transitively) an ancestor of this one.

The smallest fix

addSource('company', { unnest: [{ path: 'addresses', as: 'address' }] })

Reference

Covered in full at the API reference.