This article describes how to build API only Rails application using new Rails 5 `--api` option. Further, I'll explain how to follow JSON:API specification and how to test your API's.
Two days ago my pull request for merging `flycheck-typescript-tslint` into `flycheck` is accepted. Package is now removed from Melpa. I also joined Flycheck organization and I'll continue to support TSLint checker from there.