ExecutionResult of graphql v15 not compatible with apollo-client types

[patricknick]

Intended outcome:
When for example defining an update function on useMutation, the parameter mutationResult is defined as FetchResult<T>. I expect therefore to receive a type of FetchResult<MyType>.

Actual outcome:

mutationResult is any

This is due to some changes in graphql v15, where they removed the generic type from ExecutionResult.
graphql/graphql-js#2490

How to reproduce the issue:

import { MutationUpdaterFn } from 'apollo-client';
const test: MutationUpdaterFn<{ test: string }> = (proxy, result) => {};

Versions

"apollo": "2.26.0",
"apollo-cache-inmemory": "^1.6.3",
"apollo-client": "^2.6.4",
"apollo-link": "^1.2.13",
"graphql": "^15.0.0",

System:
OS: macOS 10.15.4
Binaries:
Node: 12.16.1 - ~/.nvm/versions/node/v12.16.1/bin/node
Yarn: 1.22.4 - ~/Development/akb-kupa-arbeitsplatz/node_modules/.bin/yarn
npm: 6.13.4 - ~/.nvm/versions/node/v12.16.1/bin/npm
Browsers:
Chrome: 80.0.3987.163
Firefox: 74.0
Safari: 13.1

[simlu]

Looks like the peerDependencies state that these are not compatible:
https://github.com/apollographql/apollo-client/blob/master/package.json#L58

So this is basically a request to support graphql 15

[patricknick]

then this is related to #6111

[hwillson]

Addressed by #6194 and available in the latest @apollo/client@beta. Thanks!

[davewasmer]

FYI graphql-js has updated their types and added the generic back, with a default value now: graphql/graphql-js#2626