text: import Helper from '@ember/component/helper';
  import { inject as service } from '@ember/service';
  
  
  export default Helper.extend({
    ethereum: service(),
  
    compute([str, length]/*, hash*/) {
      var short = str.slice(0, length);
      if (short.length > str.length - 3)
        return str;
      else return short + '...';
    }
  });
  
  