start a global express server for mirage in fastboot instance-initializers/fastboot/start-mirage.js

start-mirage.js

/* instance-initializers/fastboot/start-mirage.js */
/*global process*/
import { startMirage } from 'percy-web/initializers/ember-cli-mirage';
import config from '../../config/environment';

function startFastBootMirage() {
  if (config['ember-cli-mirage'] && config['ember-cli-mirage'].fastbootGlobal) {
    let port = config['ember-cli-mirage'].fastbootGlobal.port;
    return startMirage({
      environment: 'development',
      modulePrefix:'fastboot-mirage-test',
      'ember-cli-mirage': {serverOptions: {express: {port}}}});
  }
}

function storeServerForRestartOnLiveReload(server) {
  if (typeof FastBoot !== 'undefined') {
    let express = FastBoot.require('express');
    express.mirageServer = server;
  }
}

function shutdownOldServerIfLiveReload() {
  if (typeof FastBoot !== 'undefined') {
    let express = FastBoot.require('express');
    if (express.mirageServer) {
      express.mirageServer.shutdown();
    }
  }
}

shutdownOldServerIfLiveReload();
var server = startFastBootMirage();
storeServerForRestartOnLiveReload(server);

export default {
  name: "start-mirage",

  initialize: function(/*instance*/) { }
};