ember helper waiting for an ajax request

i,ve write an ember component when init method they call ajax request

    init(){
    this._super(...arguments);
    const context = this;
    if ((this.get('localStorage').getItem('idProfileDesa')) !== null && (this.get('localStorage').getItem('idProfileDesa')) !== undefined) {
      if ((this.get('localStorage').getItem('idProfileDesa')) !== 0) {
        this.get('registerProfileDesaService').findByProfileFormId(this.get('localStorage').getItem('idProfileDesa')).then(
          function (response) {
            context.debug(JSON.stringify(response));
            context.set("alamat", response.alamat);
            context.set("kodeWilayah", response.kodeWilayah);
            context.set("noTelp", response.noTelepon);
            context.set("lokasiWilayah", response.lokasiWilayah);
            context.set("email", response.email);
            context.set("website", response.website);
            context.set("jumlahDusun", response.jumlahDusun);
            context.set("jumlahRw", response.jumlahRW);
            context.set("jumlahRt", response.jumlahRT);
            context.set("jumlahKepalaKeluarga", response.jumlahKepalaKeluarga);
            context.set("jumlahRumahTangga", response.jumlahRumahTangga);
            context.set("jumlahPenduduk", response.jumlahPenduduk);
            context.set("lokasiKantor", response.lokasiKantor);
            context.set("pos", response.pos);
          }, function (e) {
            context.debug(e);
            context.get('commonService').showNotification(e);
          });
      }
    }
  }

this is worked, but unfortunately my ember helper doesn't waiting for ajax request and said the 'data' is undefined in console log

    import Ember from 'ember';

export function validateIsEmail(params/*, hash*/) {
  let email = params[0];
  let mustHaveChar = ["@",".com",".co.id",".id",".org"];
  let didHasWord = 0;
  mustHaveChar.forEach(function (word) {
    didHasWord = didHasWord + email.includes(word);
  });

  return (didHasWord > 1);
}

export default Ember.Helper.helper(validateIsEmail);

how to make my ember helper waiting for an ajax request?