buildSandboxGlobals doesn't seem to be called when generating pages.

[arenoir]

We successfully use fastboot with our ember app. However when trying to implement prember we are getting the following error.

TypeError: URL is not a constructor

We are adding the URL constructor to fastboot using the config/fastboot.js file exporting a buildSandboxGlobals function.

const { URL, URLSearchParams } = require('url');

module.exports = function () {
  return {
    buildSandboxGlobals(defaultGlobals) {
      console.log('buildSandboxGlobals')
      console.log('defaultGlobals', defaultGlobals)
      console.log('URL', new URL('https://google.com'));

      return Object.assign({}, defaultGlobals, {
        URL,
        URLSearchParams
      });
    }
  };
};

When rendering the site in fastboot everything renders, the buildSandboxGlobals function logs the defaultGlobals and the URL constructor works:

App is being served by FastBoot
buildSandboxGlobals
defaultGlobals {
  FastBoot: {
    require: [Function (anonymous)],
    config: [Function: fastbootConfig],
    distPath: [Getter]
  }
}
URL URL {
  href: 'https://google.com/',
  origin: 'https://google.com',
  protocol: 'https:',
  username: '',
  password: '',
  host: 'google.com',
  hostname: 'google.com',
  port: '',
  pathname: '/',
  search: '',
  searchParams: URLSearchParams {},
  hash: ''
}

When enabling prember we get the following error and no console statements from the buildSandboxGlobals function.

   TypeError: URL is not a constructor

    broccoliNode: {
      nodeName: 'prember',
      nodeAnnotation: undefined,
     ...
    },
    versions: { 'broccoli-builder': '3.5.2', node: 'v16.14.0' }

Any help is greatly appreciated.