Katarina

This gem generates type definition files for TypeScript from a OpenAPI Documentation generated by rspec-openapi.

Add this line to your application's Gemfile:

gem 'katarina', group: :development

And then execute:

$ bundle install

Execute below command

$ bin/rails katarina:generate

#{Katarina.config.input_path} contents is below:

---
openapi: 3.0.3
info:
  title: sample
paths:
  "/v1/users/{user_id}/posts":
    get:
      summary: 'api/v1/users/posts #index'
      parameters:
      - name: user_id
        in: path
        required: true
        schema:
          type: integer
      responses:
        '200':
          description: HTTP status is 200
          content:
            application/json:
              schema:
                type: object
                properties:
                  id:
                    type: integer
                  name:
                    type: string
                  comments:
                    type: array
                    items:
                      type: object
                      properties:
                        id:
                          type: integer
                        deleted:
                          type: boolan
                # ...

And then it will generate #{Katarina.config.output_dir}/api/users/posts.d.ts like the following contents:

type TApiUsersPostsIndex200 = {
  id: number
  name: string
  comments: {
    id: number
    deleted: boolean
  }[]
}

The following configurations are optional.

Katarina.configure do |config|
  # Change the input path to generate types from RSpec::OpenAPI.path
  config.input_path = 'doc/schema.yaml'

  # Change the output directory to generate types from #{RSpec::OpenAPI.path}/types
  config.output_dir = 'doc/types'

  # Sets the paths to be excluded from type naming and generating type definition file path
  config.exclude_paths = %w[api v1]

  # Disable type name prefix
  config.prefix = false
end

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment. If you want to check it with an old version of Ruby, run bin/build and transpile it.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Bug reports and pull requests are welcome on GitHub at https://github.com/sanfrecce-osaka/katarina. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the code of conduct.

The gem is available as open source under the terms of the MIT License.

Everyone interacting in the Katarina project's codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.