const ApolloClient = require('apollo-client');
require('graphql/language/parser'); // just to make runkit happy
const gql = require('graphql-tag');
const client = new ApolloClient.ApolloClient({
dataIdFromObject(obj) { return obj.id; },
addTypeName: true
});
const fragment = gql`fragment update on person{
id
__typename
}`;
const id = 'person-01';
const __typename = '__typename';
Write a fragment in and read it back out:
client.writeFragment({
fragment,
id,
data: {
id,
__typename
}
});
client.readFragment({
fragment,
id
}); // should get { __typename: '__typename', id: 'person-1' }
Now, how do I delete that fragment back out?
Trying to `writeFragment` with `null` as the data:
client.writeFragment({
fragment,
id,
data: null
});
client.readFragment({
fragment,
id
}); // fragment is still there
Trying to `writeFragment` with an empty object:
client.writeFragment({
fragment,
id,
data: {}
});
client.readFragment({
fragment,
id
}); // fragment is still there
client.writeFragment({
fragment,
id,
data: undefined
});
client.readFragment({
fragment,
id
}); // fragment is still there
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