TypeError: (0 , utils_1.promiseReduce)(...).resolve is not a function

[inpercima]

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Describe the bug

Since updating from graphql-tools/utils version 10.8.1 to 10.8.6, I have noticed the above-mentioned error with mutations.
It turned out that a downgrade to 10.8.2 works. All versions above this throw the error.

stacktrace: Array(11) [ "TypeError: (0 , utils_1.promiseReduce)(...).resolve is not a function", " 
 at executeFieldsSerially (/workspace/application/backend/node_modules/.pnpm/@graphql-tools+executor@1.3.12_graphql@16.10.0/node_modules/@graphql-tools/executor/cjs/execution/execute.js:257:29)", "
 at executeOperation (/workspace/application/backend/node_modules/.pnpm/@graphql-tools+executor@1.3.12_graphql@16.10.0/node_modules/@graphql-tools/executor/cjs/execution/execute.js:231:18)", … ]

So it could be a change in version 10.8.3 causes this error.

Environment:

• OS: Linux/Ubuntu

"@graphql-tools/delegate": "10.2.14",
"@graphql-tools/stitch": "9.4.19",
"@graphql-tools/utils": "10.8.2",
"@graphql-tools/wrap": "10.0.32",
"graphql": "16.10.0",

• NodeJS: 22.14.0

[ardatan]

Please share a minimal isolated reproduction on CodeSandbox. Thanks!

[ikemo3]

I encountered a similar error:

ERR TypeError: promiseReduce(...).resolve is not a function
    at executeFieldsSerially (file:///usr/src/app/node_modules/.pnpm/@graphql-tools+executor@1.4.0_graphql@16.10.0/node_modules/@graphql-tools/executor/esm/execution/execute.js:261:29)
    at executeOperation (file:///usr/src/app/node_modules/.pnpm/@graphql-tools+executor@1.4.0_graphql@16.10.0/node_modules/@graphql-tools/executor/esm/execution/execute.js:235:18)

Pinning "@whatwg-node/promise-helpers" to version "1.2.4" fixed the issue for me.
I don't know the root cause, but I hope this information helps.

[inpercima]

Thank you @ikemo3 for your response.

Yesterday I created a test repository for the issue but I could not reproduce the problem. I took all configurations and also the graphql codes from the original project, but it worked. After a few considerations I checked the pnpm lock file from the original project and realized that it works with a complete installation of the dependencies. But I had no idea why, the changes were to much to find the reason.

Now with your answer I can confirm, pinning @whatwg-node/promise-helpers to version 1.2.4 fixes the issue too.
So both worked for me.

[acburdine]

I ran into this issue as well today.

As has been mentioned before, pinning promise-helpers to 1.2.4 does fix the issue (I also tried 1.2.5 and it worked as well) but I also realized that I was running an older version of @graphql-tools/executor. Bumping @graphql-tools/executor to the latest (1.4.7 as of this morning, but I believe 1.4.2 is the fixed version) fixed the issue.

What I suspect is that the changes in this PR: ardatan/whatwg-node#2152 don't play nicely with the code in @graphql-tools/executor prior to the changes made to the executor package in this pr: #6971.

Would have to do some more spelunking through my dependency graph to verify, but I think the issue could be resolved by updating a caret range in one/more of the graphql-tools repos 🤔 (for me @graphql-tools/executor is being pulled in as a dep of graphql-yoga)

TL;DR @whatwg-node/promise-helpers >= v1.3.0 plus @graphql-tools/executor <= v1.4.1 causes the bug.