Relay Modern updater ConnectionHandler.getConnection() returns undefined when parent record is root - relayjs

Question

Debugging update:
So, we went a bit further in debugging this and it seems like 'client:root' cannot access the connection at all by itself.
To debug the complete store, we added this line in the updater function after exporting the store variable from the relay/environment.
console.log(relayEnvStore.getSource().toJSON())
If I use .get() with the specific string client:root:__ItemList_items_connection, I can access the records I have been looking for but it's definitely not pretty.
const testStore = store.get('client:root:__ItemList_items_connection')
console.log(testStore.getLinkedRecords('edges'))
Original:
I'm using Relay Modern and trying to update the cache after the updateItem mutation is completed with the updater. The call to ConnectionHandler.getConnection('client:root', 'ItemList_items') returns undefined.
I'm not sure if it's because I'm trying to use 'client:root' as my parent record or if there's a problem with my code. Has anyone found themselves with a similar issue?
Here's the paginationContainer:
const ItemListPaginationContainer = createPaginationContainer(
ItemList,
{
node: graphql`
fragment ItemList_node on Query
#argumentDefinitions(count: { type: "Int", defaultValue: 3 }, cursor: { type: "String" }) {
items(first: $count, after: $cursor) #connection(key: "ItemList_items") {
edges {
cursor
node {
id
name
}
}
pageInfo {
hasNextPage
hasPreviousPage
startCursor
endCursor
}
}
}
`
},
{
direction: 'forward',
getConnectionFromProps: props => props.node && props.node.items,
getVariables(props, { count, cursor }) {
return {
count,
cursor
}
},
query: graphql`
query ItemListQuery($count: Int!, $cursor: String) {
...ItemList_node #arguments(count: $count, cursor: $cursor)
}
`
}
)
Here's the mutation:
const mutation = graphql`
mutation UpdateItemMutation($id: ID!, $name: String) {
updateItem(id: $id, name: $name) {
id
name
}
}
`
Here's the updater:
updater: (store) => {
const root = store.getRoot()
const conn = ConnectionHandler.getConnection(
root, // parent record
'ItemList_items' // connection key
)
console.log(conn)
},

Answer 1

Turns out that I was setting my environment incorrectly. The store would reset itself every time I would make a query or a mutation, hence why I couldn't access any of the connections. I initially had the following:
export default server => {
return new Environment({
network: network(server),
store: new Store(new RecordSource())
})
}
All connections are accessible with this change:
const storeObject = new Store(new RecordSource())
export default server => {
return new Environment({
network: network(server),
store: storeObject
})
}