External references

Local references to schema definitions (those beginning with #/definitions/schemas/) will be converted to type references to the equivalent, generated top-level type.

The OpenAPI generator also supports external references, which allows you to break down your openapi.yml into multiple sub-files, or incorporate third-party schemas as part of your types to ensure everything is able to be TypeScript generated.

External references may be:

• relative references - references to other files at the same location e.g. { $ref: 'schemas/customer.yml' }

• remote references - fully qualified references to another remote location e.g. { $ref: 'https://myexampledomain.com/schemas/customer_schema.yml' }

For remote references, both files (when the file is on the current filesystem) and http(s) URLs are supported.

External references may also contain internal paths in the external schema (e.g. schemas/collection.yml#/definitions/schemas/Customer) and back-references to the base openapi file or between files (so that you can reference another schema in the main file as a type of an object or array property, for example).

At start-up, an OpenAPI or Swagger file with external references will be "bundled", so that all external references and back-references will be resolved (but local references preserved).