Expose type and error constructor for graphql response errors

[devversion]

Exposes types and the error constructor for the error being
thrown when a GraphQL response contains errors. This allows
consumers to easily distinguish between unrelated errors vs.
graphql related errors, and allows for type-guarded access of
the response data / response headers.

Fixes #311

[gr2m]

can you check the remaining errors? Do the tests pass for you locally?

[devversion]

@gr2m yeah, working on it. thx for the heads up. I'm guilty of not running the tests locally 😅🧐

[gr2m]

you can also run npm run lint:fix to make the prettier linter happy and to keep the code formatting consistent with the rest. I hope to remove the necessity for that in future and just auto-format code pushed to the default branch, but for the time being we gotta bow to the rule of the prettier overlord

[devversion]

@gr2m Done. I had to step away for a little bit. Fixed lint, fixed coverage drop due to the new export. Should be good for another pass. thanks

[gr2m]

great PR, thanks a lot 💐

[github-actions]

🎉 This PR is included in version 4.7.0 🎉

The release is available on:

• GitHub release
• npm package (@latest dist-tag)

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