How to use fatify-cors to enable just one api to cross domain?

I want to let [POST] localhost/product just this API to cross domain.

I dont know how to do it

fastify.register(require('fastify-cors'), {    origin:'*',    methods:['POST'],      })  

this is my api:

{        method: 'POST',        url: '/product',        handler: productsController.addProduct,  },  

https://stackoverflow.com/questions/65557198/how-to-use-fatify-cors-to-enable-just-one-api-to-cross-domain January 04, 2021 at 11:06AM