Request: ability to use ajv-oai as an AJV plugin.

[seriousme]

Hi,

I'm the author of fastify-openapi-glue which adds OpenAPI support to the Fastify webserver.
fastify-openapi-glue uses your ajv-oai to implement the additional types on AJV.

Currently I create a new AJV instance using ajv-oai and pass that to Fastify. (see https://github.com/seriousme/fastify-openapi-glue/blob/master/index.js#L50)
That works great (thanks for that !) but also means that I need to track changes in Fastify's config of AJV.

Fastify exposes a parameter 'ajv' (see https://www.fastify.io/docs/latest/Server/#ajv) to pass AJV plugins to the default AJV instance.

Now If I could pass ajv-oai as a plugin to AJV then I would not need to track changes in Fastify's AJV config anymore.

I checked other AJV plugins (e.g. https://github.com/luzlab/ajv-formats/blob/master/index.js) and the main difference is that AJV needs to be passed as a parameter.

Is it possible to add a plugin option to ajv-oai ?

I can write a PR.

Kind regards,
Hans

[seriousme]

It turns out the fastify 'ajv' parameter can only be used on new instances and not on plugins like mine.
Sorry to have bothered you.

Kind regards,
Hans