Need an npm package to get around npm / graphql-js issues

[helfer]

Using different versions of graphql-js for generating the schema and executing queries doesn't work, because graphql-js uses instanceof to check if a schema is a graphql schema.

When installing from github, it seems that npm installs multiple copies of the apollo-server package, even when they are the same version. This leads to the issue above showing up all the time. Creating an experimental npm package should do the trick, but we'd have to do it for apollo-server and our fork of graphql-js (and express-graphql, if we want to use that as well). Hopefully a new npm version of graphql-js will solve this problem soon, because it's quite a hassle.

[helfer]

new version of graphql-js is out, so this isn't as much of an issue any more.