Cannot find module 'koa'.

[anodynos]

When importing as mentioned in docs for an express project:

import { express as voyagerMiddleware } from 'graphql-voyager/middleware';

I get

 node_modules/graphql-voyager/middleware/koa.d.ts:1:25 - error TS2307: Cannot find module 'koa'.

 1 import { Context } from 'koa';

from typescript@2.9.2

[daniloferreira]

I facing the same issue. Event though my tsconfig.json ignores node_modules: "exclude": [ "node_modules" ] the error occurs

[daniloferreira]

I realized how make it work: import voyagerMiddleware = require('graphql-voyager/middleware/express'); app.use('/voyager', voyagerMiddleware.default({ endpointUrl: '/graphql' }));

[daniloferreira]

this way worked better: import voyagerMiddleware from 'graphql-voyager/middleware/express'; app.use('/voyager', voyagerMiddleware({ endpointUrl: '/graphql' }));

[IvanGoncharov]

@anodynos @daniloferreira Just published 1.0.0-rc.26 📦 with a fix included. Can you please try.

this way worked better: import voyagerMiddleware from 'graphql-voyager/middleware/express'; app.use('/voyager', voyagerMiddleware({ endpointUrl: '/graphql' }));

@daniloferreira It's workaround not a full fix since express middlaware still depends on @types/express. So I just removed all externall types from middlewares to completely solve this problem.

[Apollinaire]

@IvanGoncharov I get TypeError: voyagerMiddleware is not a function with the following imports on 1.0.0-rc.26 :

import { express as voyagerMiddleware } from 'graphql-voyager/middleware';  // => undefined
//or
import voyagerMiddleware  from 'graphql-voyager/middleware/express'; // => { }

[IvanGoncharov]

@Apollinaire Strange, it works for me when I'm doing:

const { express: voyagerMiddleware } = require('graphql-voyager/middleware');

Can you please test the same code in your setup. I see you are using ES6 modules, what environment do you using babel, typescript, esm?

[Apollinaire]

I'm using Meteor to build, with the ecmascript package, which uses Babel under the hood. To be more precise, i'm trying to include this to vulcan.js : https://github.com/vulcanjs/vulcan Any import on server side returns undefined. On the client it works, but I need the middleware to run serverside only, because that's where I create my express app.

[IvanGoncharov]

@Apollinaire I'm not familiar with meteor so can you please create GitHub repo with the minimal setup to reproduce this issue?

[Apollinaire]

After further search, it seems related to how I build my project. Something in my config must be wrong because I am able to import and run the middleware in other Vulcan/Meteor projects. I'll update this when I've found the issue, it might be useful for future people Thanks for your time @IvanGoncharov

[IvanGoncharov]

@Apollinaire I'm closing this issue since the original issue was resolved. But please post your findings here it will help if other Meteor users will have the same problem.

[anodynos]

@IvanGoncharov thanks, it worked great!

import voyagerMiddleware from 'graphql-voyager/middleware/express'; 
app.use('/voyager', voyagerMiddleware({ endpointUrl: '/graphql' }));

[Apollinaire]

@IvanGoncharov it was just some bad config from me, other should not have the same problem.

[SachaG]

@Apollinaire I'm running into the same issue on my own Vulcan project, how did you fix it?

[Apollinaire]

@SachaG IIRC the problem was that I was doing npm i --save-dev graphql-voyager because I was thinking that I only had to use it on dev environment. But Meteor did not like this, so I just did npm i graphql-voyager and it worked !

[SachaG]

Haha exact same issue for me! Thanks!

[eric-burel]

Guess who got the same issue

[Apollinaire]

Haha exact same issue for me! Thanks!

Guess who got the same issue

We're one damn fine core team for Vulcan.js