Integration with Azure Functions

import { createRouter, Response } from 'fets'
import { AzureFunction, Context, HttpRequest } from '@azure/functions'
 
const router = createRouter<Context>().route({
  method: 'GET',
  path: '/greetings',
  schemas: {
    responses: {
      200: {
        type: 'object',
        properties: {
          message: {
            type: 'string'
          }
        },
        required: ['message'],
        additionalProperties: false
      }
    }
  },
  handler: () => Response.json({ message: 'Hello World!' })
})
 
const httpTrigger: AzureFunction = async function (
  context: Context,
  req: HttpRequest
): Promise<void> {
  const response = await router.fetch(req.url, {
    method: req.method?.toString(),
    body: req.rawBody,
    headers: req.headers
  })
 
  const headersObj = {}
  response.headers.forEach((value, key) => {
    headersObj[key] = value
  })
 
  const responseText = await response.text()
 
  context.res = {
    status: response.status,
    body: responseText,
    headers: headersObj
  }
}