fragment which has __typename only is removed by removeClientSetsFromDocument

[mtsmfm]

Intended outcome:

The following code which works in v2 should not throw an error in v3:

client.query({
  query: gql`
    query {
      gameStatus(gameId: "gcn811f") {
        maze {
          cells {
            ...CellFragment
          }
        }
      }
    }

    fragment CellFragment on Cell {
      __typename
    }
  `
});

Actual outcome:

The above code throws an error Validation error of type UndefinedFragment: Undefined fragment CellFragment @ 'gameStatus/maze/cells' because the CellFragment only contains __typename

apollo-client/src/utilities/graphql/transform.ts

Line 503 in 61a799b

return null;

How to reproduce the issue:

https://codesandbox.io/s/apollo-3-fragment-bug-yf8f7?file=/src/index.ts
https://codesandbox.io/s/apollo-2-with-fragment-lfe8e?file=/src/index.ts

Versions

@apollo/client 3.0.0-beta.49

[mtsmfm]

@hwillson I sent a PR to fix this issue #6322
Can I ask you to review?

[LaureRC]

@hwillson any updates on this? :)

[chris110408]

I will take a look at it

[Emmanuel-Melon]

@chris110408 any updates?

[kevinbgreene]

@hwillson did this get lost or a "won't fix"? No movement here or PR.

[chris110408]

Sorry I was totally forget this. any one please feel free to take over this ticket

[kevinbgreene]

Thanks for the quick reply @chris110408. We'll get something together.

[github-actions]

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