injectFilter

If this directive is included on a field, it indicates that this field is a filterable collection and must either be an array type or conform to the relay server specification for collections.

    type {X}Connection  {
        edges: [TransactionEdge!]
        pageInfo: PageInfo!
    }

    type {X}Edge {
        node: X(!)
        cursor: Cursor!
    }

The directive introspects on the field type and adds a filter argument in the style of mongodb filters (or Gatsby filters)

directive @injectFilter on FIELD_DEFINITION