Other Environments

import { createYoga } from 'graphql-yoga'
 
const yoga = createYoga<MyRandomCtx>()
 
export async function myMiddleware(req: MyRandomRequest, ctx: MyRandomCtx) {
  // req.url is a full url here not a relative path
  const response = await yoga.fetch(
    req.url,
    {
      method: req.method,
      headers: req.headers,
      body: req.body // req.body should be a valid BodyInit like an AsyncIterable, a ReadableStream, a Node.js Readable, a string or a Buffer etc...
    },
    // Third parameter becomes your server context
    ctx
  )
  // response is a WHATWG `Response` object
 
  // Create a headers object for your middleware response
  const headersObj: Record<string, string> = {}
 
  response.headers.forEach((value, key) => {
    headersObj[key] = value
  })
 
  // Let's say your environment needs to return something like the below;
  return {
    statusCode: response.status,
    body: response.body,
    // static responses will disable subscriptions
    // body: await response.text() If it accepts a string
    // body: await response.json() If it accepts a json
    // body: response.body if it accepts a ReadableStream or an AsyncIterable
    // body: Readable.from(response.body) if it accepts a Node.js Readable
    headers: headersObj // We assume that your environments accepts a regular JS object for response headers
  }
}