[graphql-language-service]: TypeError [ERR_INVALID_ARG_TYPE]: The "chunk" argument must be one of type string or Buffer. Received type object

[yoshiakis]

graph-language-service doesn't return an error message that shows what you need to do.

how to reproduce

Run one of the following commands in the root of package graphql-language-service, then you got the same error message as the title.
bin/graphql.js autocomplete --text foo --schemaPath ...
bin/graphql.js outline --text foo
bin/graphql.js validate --text foo --schemaPath ...
(Before running these scripts, you need to run yarn build in advance.)

cause

error given at

graphiql/packages/graphql-language-service/src/client.ts

Line 105 in 917c393

process.stderr.write(error);

or

graphiql/packages/graphql-language-service/src/client.ts

Line 134 in 917c393

process.stderr.write(error);

or

graphiql/packages/graphql-language-service/src/client.ts

Line 148 in 917c393

process.stderr.write(error);

is actually type object, though process.stderr.write method doesn't allow for type object. Therefore, the method throws an error.

[yoshiakis]

I've almost done to fix this issue at my local branch. Soon I'll PR for this.

[acao]

thanks @yoshiakis! we have an outstanding bug for this: #1306

[acao]

we're already underway with a fix. which needs to be in graphql-language-service-server, is that where your fix is?

[yoshiakis]

@acao Although this issue looks similar to #1306, it seems the cause of this issue is different from the cause of #1306.

[acao]

i’ll get a chance to take a closer look next week probably