Allow the special * value in array in origin option

[gilles-crealp]

Prerequisites

• I have written a descriptive issue title
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🚀 Feature Proposal

Recognise the special * value in array type origin option.

Motivation

When using this plugin with env-schema or fastify-env, I have to switch from string in dev (for *) to array in production (with separator: ',' for multiple origins).

Example

import fastify from 'fastify'
import fastifyCors from '@fastify/cors'
import envSchema from 'env-schema'

const config = envSchema({
  dotenv: true,
  schema: {
    type: 'object',
    properties: {
      CORS_ORIGIN: {
        type: 'string',
        separator: ',',
        default: '*'
      }
    }
  }
})

const server = fastify()

server.register(fastifyCors, {
  origin: config.CORS_ORIGIN
})

server.listen()

[mcollina]

Thanks for reporting! Would you like to send a Pull Request to address this issue? Remember to add unit tests.

[Uzlopak]

provided a PR #244

[gilles-crealp]

OK, @Uzlopak was more reactive than me. Thank you!