Attempt to do CouchDB filtered replication by view

_design_groups.json

{
  "_id": "_design/groups",
  "views": {
    "itemsByGroup": {
      "map": "function(doc) {\n    if (doc.type == 'group') {\n      for (var i in doc.itemIds) {\n        emit([doc._id, i], {_id: doc.itemIds[i]});\n      }\n    }\n}"
    }
  }
}

_replicator_alice-to-bob.json

{
  "docs": [
    {
      "_id": "alice-to-bob",
      "source": {
        "url": "http://localhost:5984/test-alice",
        "headers": {}
      },
      "target": {
        "url": "http://localhost:5984/test-bob",
        "headers": {}
      },
      "filter": "groups/_view/itemsByGroup",
      "continuous": true
    }
  ]
}

groups.json

{
  "docs": [
    {
      "_id": "group#1",
      "type": "group",
      "itemIds": [
        "item#10446",
        "item#10483"
      ]
    }
  ]
}

items.json

{
  "docs": [
    {
      "_id": "item#10446",
      "type": "item",
      "title": "An item"
    },
    {
      "_id": "item#10483",
      "type": "item",
      "title": "Another item"
    }
  ]
}