Regression error using graphql v14

[emmanuelbuah]

There's a regression error that surfaces using graphql v14

TypeError: Cannot read property 'slice' of undefined
    at buildDirective (../node_modules/graphql/utilities/buildClientSchema.js:286:51)
    at Array.map (<anonymous>)
    at Object.buildClientSchema (../node_modules/graphql/utilities/buildClientSchema.js:302:84)
    at Object.introspectionToGraphQLSchema (../node_modules/graphql-codegen-core/dist/utils/introspection-to-schema.js:11:22)
    at Request._callback (../node_modules/graphql-code-generator/dist/loaders/schema/introspection-from-url.js:59:48)
    at Request.self.callback (../node_modules/graphql-code-generator/node_modules/request/request.js:185:22)
    at Request.emit (events.js:182:13)
    at Request.<anonymous> (../node_modules/graphql-code-generator/node_modules/request/request.js:1161:10)
    at Request.emit (events.js:182:13)
    at IncomingMessage.<anonymous> (../node_modules/graphql-code-generator/node_modules/request/request.js:1083:12)

This looks like its due to the breaking change by graphql/graphql-js#1429. More on changes in graphql v14 at graphql/graphql-js#1383

[IvanGoncharov]

@emmanuelbuah It's because of this change graphql/graphql-js#1429
This introspection format was deprecated for last few years so we removed it in 14.0.0 release.
What library do you use to implement GraphQL on your backend?

[emmanuelbuah]

@IvanGoncharov I'm using apollo express server v1.4

[IvanGoncharov]

@emmanuelbuah Looks like everything good with your server and the bug happening because of this line:

graphql-code-generator/packages/graphql-codegen-cli/src/loaders/schema/introspection-from-url.ts

Line 52 in 8c071a8

query: introspectionQuery.replace('locations', '')

I'm not sure why this library needs to remove directive locations.

It can't be fixed in 'graphql-js' but I will add explicit check and better error message on the next release.

[dotansimha]

Fixed in 0.12.0