Undefined error when using apollo-boost/apollo-cache-inmemory.

[joelmandell]

Hey! I am using apollo-cache-inmemory 1.3.11, tried backwards to 1.3.4. But I get same error as screenshot below shows:

What am I doing wrong?

[joelmandell]

I would like to clarify, that this happens when I import apollo-boost.

Anyway, I solved this by importing apollo-cache-inmemory, and those requirements by myself instead of using apollo-boost. And then I do not get this exception.

[benjamn]

Is the graphql package installed in your app? That's where QueryDocumentKeys is supposed to be coming from (specifically, from the graphql/language/visitor module).

[joelmandell]

Yes, it is. This is my package.json:

  "dependencies": {
    "apollo-boost": "^0.1.22",
    "apollo-cache-inmemory": "1.4.0-alpha.1",
    "apollo-client": "^2.4.7",
    "apollo-link-http": "^1.5.7",
    "bootstrap": "^3.3.7",
    "graphql": "^14.0.2",
    "graphql-tag": "^2.10.0",
    "react": "^16.0.0",
    "react-apollo": "^2.3.2",
    "react-bootstrap": "^0.31.5",
    "react-dom": "^16.0.0",
    "react-router-bootstrap": "^0.24.4",
    "react-router-dom": "^4.2.2",
    "react-scripts": "1.0.17",
    "rimraf": "^2.6.2"
  }

[joelmandell]

Is the graphql package supposed to be installed in node_modules\apollo-boost\node_modules?
As it is now, folder structure is like this:

I removed the node_modules from ClientApp folder, and did "npm install" from scratch. Still same problem.
Is it suppose to contain graphql in itself? E.g. node_modules\apollo-boost\node_modules\graphql?

[arist0tl3]

What a goose chase, lol.

@joelmandell If you update your react-scripts to ^1.1.2, I think you will see this issue resolved. Relevant comment and thread: graphql/graphql-js#1248 (comment)

tl;dr: react-scripts prior to 1.1.2 wasn't respecting .mjs files, leading to an undefined export in this case.

[joelmandell]

Yea that is probarly it. This was a project based on an .net core template.