Graphql-js: Error: Must provide Source. Received: undefined after upgrade to [email protected]

[Fi1osof]

Title.

Downgrade to [email protected] solve problem.

[ssypi]

Same here, it's possible the problem is in graphql-tools instead though as it seems to begin from there.

Error: Must provide Source. Received: undefined.
    at devAssert (node_modules/graphql/jsutils/devAssert.js:13:11)
    at new Parser (node_modules/graphql/language/parser.js:82:67)
    at Object.parse (node_modules/graphql/language/parser.js:35:16)
    at Object.<anonymous> (node_modules/graphql-tools/dist/stitching/introspectSchema.js:39:42)

---

at graphql-tools/dist/stitching/introspectSchema.js:39:42

var graphql_1 = require("graphql");
var linkToFetcher_1 = require("./linkToFetcher");
var parsedIntrospectionQuery = graphql_1.parse(graphql_1.introspectionQuery);

---

It seems that the bolded part graphql_1.introspectionQuery is undefined which then causes the error at node_modules/graphql/language/parser.js:82:67)

If I change that line from graphql_1.introspectionQuery -> graphql_1.getIntrospectionQuery() it seems to work.

---

EDIT: Ah, it's deprecated, mentioned in the changelogs:
#2124 Remove deprecated 'introspectionQuery' constant (@IvanGoncharov)

[yaacovCR]

Should be fixed in graphql-tools v4.0.7. (https://github.com/apollographql/graphql-tools/blob/master/CHANGELOG.md)

Which version are you using?

[ssypi]

I

Should be fixed in graphql-tools v4.0.7. (https://github.com/apollographql/graphql-tools/blob/master/CHANGELOG.md)

Which version are you using?

I was on latest v5 alpha, I’ll try latest stable tomorrow.

[mike-marcacci]

This is almost certainly due to the existence of multiple different versions of graphql in your dependency tree. You can look for this by running either:

# using yarn
yarn why graphql

# using npm
npm ls graphql

While GraphQL 15 _is_ a major change, you may find that the libraries you use that have a stated dependency of 14 will still work with the new version. If this is the case, you can force the use of version 15 everywhere using yarn's resolutions or npm-force-resolutions.

However, the real solution is to make sure all libraries are updated to use the newest version of graphql.

[ssypi]

I

Should be fixed in graphql-tools v4.0.7. (https://github.com/apollographql/graphql-tools/blob/master/CHANGELOG.md)
Which version are you using?

I was on latest v5 alpha, I’ll try latest stable tomorrow.

Maybe op has a different problem, but for me at least, the problem seems to be in graphql-tools v5.0.0-alpha.2, downgrading to 4.0.7 fixed the problem.

[yaacovCR]

Should definitely be fixed in graphql-tools alpha.

One thing you can try is to delete your node_modules folder and reinstall:

Of note, this path is no longer within the graphql-tools alpha version:
node_modules/graphql-tools/dist/stitching/introspectSchema.js

Having been replaced by:
node_modules/graphql-tools/dist/stitch/introspectSchema.js

[ssypi]

Should definitely be fixed in graphql-tools alpha.

One thing you can try is to delete your node_modules folder and reinstall:

Of note, this path is no longer within the graphql-tools alpha version:
node_modules/graphql-tools/dist/stitching/introspectSchema.js

Having been replaced by:
node_modules/graphql-tools/dist/stitch/introspectSchema.js

I removed node_modules and package-lock.json several times during testing and the problem always reoccurred, but I think I found the problem.

There's a version 5.0.0-rc.1 published a year ago in NPM registry and it seems that for some reason npm was installing that version instead. I guess it thought it was newer than the 5.0.0-alpha.2. I had ^5.0.0-alpha.2 in my package.json.

This is a part of the package.json from graphql-tools that was getting installed and it seems to be the wrong version:

"_from": "graphql-tools@^5.0.0-alpha.2",
"_id": "[email protected]",
"version": "5.0.0-rc.1"

[yaacovCR]

Ahah, makes sense now, thanks!

That is a very old rc, and graphql-tools has gone back to alphas prior to release of v5.

[IvanGoncharov]

@yaacovCR Thanks investigating this issue 👍
It looks like nothing should be changed in graphql-js so I'm closing it.

[damiangreen]

I've bumped to the latest "graphql-tools": "^6.0.6", + "graphql": "15.0.0", and i still receive this error.
What is the resolution?

[yaacovCR]

Does @mike-marcacci comment above give and additional info: https://github.com/graphql/graphql-js/issues/2503#issuecomment-609359497

[damiangreen]

I don't have multiple graphql versions

[jean9696]

I don't have multiple graphql versions

Same here 😕

[yaacovCR]

So far from above the problem seems to be with graphql-tools rather than graphql-js...

You might want to open an issue there with attention to version of graphql-tools. A minimal reproduction would be helpful.

[damiangreen]

ok i raised an issue there

[ahelord]

this repo example fail Apollo federation migrate example

[a7ul]

I had the same issue after upgrading to graphql v15

 "graphql": "^15.1.0",
 "apollo-server-express": "^2.16.0"

After reading through comments, I added

"resolutions": {
   "graphql-tools": "4.0.7"
 }

Following this, deleted my node_modules and reinstalled using yarn install

And it fixed my issue

[zenz]

@a7ul Thanks! your solution works for me!