Missing dependency 'ws' when attempting to use kikstart-graphql-client in firebase function

[Artorp]

I received this error message when attempting to use kikstart-graphql-client in a firebase function:

Provided module can't be loaded. 
Did you list all required modules in the package.json dependencies?
Detailed stack trace: Error: Cannot find module 'ws' 
at Function.Module._resolveFilename (internal/modules/cjs/loader.js:636:15)
at Function.Module._load (internal/modules/cjs/loader.js:562:25)
at Module.require (internal/modules/cjs/loader.js:692:17)
at require (internal/modules/cjs/helpers.js:25:18)
at Object.<anonymous> (/workspace/node_modules/kikstart-graphql-client/dist/kikstart-graphql-client.js:11:30) 

Seems like this issue is from importing 'ws' in https://github.com/beeman/kikstart-graphql-client/blob/master/src/kikstart-graphql-client.ts#L13, but not listing it as a dependency in package.json.

I fixed it on my side by adding 'ws' as a dependency in my local project.