TypeError: this.splice is not a function

Attempting to run graphql-inspector serve SCHEMA version 3.1.1 or above results in an error message:

` success GraphQL API: http://localhost:4000 C:\Users\bobhat\AppData\Roaming\npm\node_modules@graphql-inspector\cli\node_modules\cross-undici-fetch\dist\patch-headers-list.js:44 this.splice(index, 0, normalizedName, normalizedValue) ^

TypeError: this.splice is not a function at HeadersList.append (C:\Users\bobhat\AppData\Roaming\npm\node_modules@graphql-inspector\cli\node_modules\cross-undici-fetch\dist\patch-headers-list.js:44:16) at Headers.append (C:\Users\bobhat\AppData\Roaming\npm\node_modules@graphql-inspector\cli\node_modules\undici\lib\fetch\headers.js:196:31) at fill (C:\Users\bobhat\AppData\Roaming\npm\node_modules@graphql-inspector\cli\node_modules\undici\lib\fetch\headers.js:69:15) at new Headers (C:\Users\bobhat\AppData\Roaming\npm\node_modules@graphql-inspector\cli\node_modules\undici\lib\fetch\headers.js:170:5) at new Request (C:\Users\bobhat\AppData\Roaming\npm\node_modules@graphql-inspector\cli\node_modules\cross-undici-fetch\dist\node-ponyfill.js:77:29) at getNodeRequest (C:\Users\bobhat\AppData\Roaming\npm\node_modules@graphql-inspector\cli\node_modules@graphql-yoga\node\index.js:40:16) at YogaNodeServer.handleIncomingMessage (C:\Users\bobhat\AppData\Roaming\npm\node_modules@graphql-inspector\cli\node_modules@graphql-yoga\node\index.js:150:31) at Server.YogaNodeServer.requestListener (C:\Users\bobhat\AppData\Roaming\npm\node_modules@graphql-inspector\cli\node_modules@graphql-yoga\node\index.js:127:41) at Server.emit (node:events:527:28) at parserOnIncoming (node:_http_server:956:12) `

If I revert back to graphql-inspector/cli version 3.1.0 or earlier, it works fine without a problem. This seems to be caused by a library upgrade since 3.1.0. Any idea how to fix this?

Here is my example schema.graphql type Query { test: String }

[justindoherty]

It seems to me it has to do with the pinned 2.0.0 version of @graphql-yoga/node as part of the serve command which is requiring the old version of cross-undici-fetch instead of the newer @whatwg-node/fetch package found in the newer @graphql-yoga/node package. Any reason it’s pinned at 2.0.0 specifically?

[mignotju]

Hello, I am having the same issue using graphql-inspector validate command, with node version: v16.16.0 (LTS) I don’t have the issue with node v18.7.0. Would it be possible to have it working for node LTS version ? I can provide more information if needed.

Thanks a lot!