How to Introspect Gatsby's GraphQL Schema with JS GraphQL Plugin in WebStorm/IntelliJ

The JS GraphQL plugin for WebStorm/IntelliJ provides much needed features which don’t come out of the box with these IDEs. However, Gatsby does not have a GraphQL schema file to inform the plugin. Here, I show how to introspect the Gatsby GraphQL schema using the plugin and demonstrate its schema-aware auto-completion feature.