TypeError: definitions.trim is not a function

Bug report

when running against the latest release (5.3.5) against the latest release of graphql(1.17.4) yoga. I receive the following error.

If I rollback yoga to (1.17.1) the error disappears. Seems to be caused by yoga upgrading their version of graphql-middleware from 3.0.1 to 3.0.2.

TypeError: definitions.trim is not a function
    at parseFragmentToInlineFragment (/Users/rorykelly/Desktop/Rockspin/CuratedServer/node_modules/graphql-middleware/src/fragments.ts:85:21)
    at /Users/rorykelly/Desktop/Rockspin/CuratedServer/node_modules/graphql-middleware/src/fragments.ts:41:24
    at Array.map (<anonymous>)
    at Object.extractFragmentReplacements (/Users/rorykelly/Desktop/Rockspin/CuratedServer/node_modules/graphql-middleware/src/fragments.ts:40:6)
    at addMiddlewareToSchema (/Users/rorykelly/Desktop/Rockspin/CuratedServer/node_modules/graphql-middleware/src/middleware.ts:40:32)
    at normalisedMiddlewares.reduceRight.schema (/Users/rorykelly/Desktop/Rockspin/CuratedServer/node_modules/graphql-middleware/src/middleware.ts:86:13)
    at Array.reduceRight (<anonymous>)
    at applyMiddlewareWithOptions (/Users/rorykelly/Desktop/Rockspin/CuratedServer/node_modules/graphql-middleware/src/middleware.ts:78:77)
    at applyMiddleware (/Users/rorykelly/Desktop/Rockspin/CuratedServer/node_modules/graphql-middleware/src/middleware.ts:129:36)
    at new GraphQLServer (/Users/rorykelly/Desktop/Rockspin/CuratedServer/node_modules/graphql-yoga/src/index.ts:137:13)

To Reproduce

Expected behavior

Yoga Server should start.

Actual behaviour

Receive above error.

[gihrig]

As suggested by @RoryKelly the issue is caused by graphql-middleware update to 3.0.2, a dependency of graphql-yoga 1.17.2+

It can be corrected by requiring graphql-middleware 3.0.1 as follows. Only works with yarn, npm install does not process resolutions

package.json

"resolutions": {
  "graphql-middleware": "3.0.1"
}

See graphql-middleware #198

graphql-yoga latest (1.18.1) appears to work as expected with graphql-midleware 3.0.1

[bizmedia]

Could someone compose a simple reproduction repository? This way, I can identify the issue more quickly.

https://github.com/prisma/photonjs/tree/master/examples/typescript/graphql-auth