Add warning message when a component can't render

[gaetansnl]

If I have this query on MyComponent

objectA(id:$id){
 id,
 subobject{
    id,
    somefield
 }
}

And if I do a mutation and my mutation result look like this

objectA{
 id,
 subobject{
    id
 }
}

If the subobject id is updated during the mutation, MyComponent can't render because I don't fetch somefield.

Intended outcome:
Something to tell me why the component doesn't render anymore

Actual outcome:
The exception is ingnored in QueryManager.prototype.getCurrentQueryResult

 try {
                var data = this.dataStore.getCache().read({
                    query: query,
                    variables: variables,
                    previousResult: lastResult ? lastResult.data : undefined,
                    optimistic: true,
                });
                return apolloUtilities.maybeDeepFreeze({ data: data, partial: false });
            }
            catch (e) {
                return apolloUtilities.maybeDeepFreeze({ data: {}, partial: true });
            }

Version

• apollo-client@<2.0.3

PS: I agree this error should not happen if I don't forget my fields, but sometimes it happens.

[hwillson]

This has been addressed by #4743, and will be coming in Apollo Client 2.6. You can set returnPartialData to true to have previous partial cache results used, instead of having the returned data set to an empty object.