angularjs - Custom type: the field class is injected as an object, not a function -

i define custom field on ng-admin upload file. use documentation here.

i include repository admin-config.

define customefilefield follows:

import field "./admin-config/lib/field/field.js";  class customfilefield extends field {     constructor(name) {         super(name);         this._type = 'customfile';         this._id = undefined;          this._entity_field = undefined;         this._upload_information = {}; }  uploadinformation(baseurl) {     if(!argument.length) return this._upload_information;     if(typeof this._id === 'undefined') {         throw new error('you must provide valid id entity');     }     this._upload_information = {                  'url': baseurl + 'fr/media/upload?ref_id='+ this._id +'&ref=opnrecipebundle\\entity\\recipe',                   'apifilename': 'files'      };     return this;  }  // value of entity id id(value) {     if(!argument.length) return this._id;     this._id = value;     return this; } //name of field in entity id entityfield(value) {     if(!argument.length) return this._entity_field;     this._entity_field = value;     return this;     } } export default customfilefield; 

and defined corresponding view accordind documentation.

i register both current:

nga.registerfieldtype('customfile', require('./customfilefield.js')); fvp.registerfieldview('customfile', require('./customfilefieldview.js'));  

then call freshly new define type with:

nga.field('itsname','customfile'); 

nevertheless have current error, after transpiling properly:

error: [$injector:modulerr] failed instantiate module opnadmin due to: this._fieldtypes[t] not constructor

when logging things carrefully, seems field typetypes collection has many entries, 1 each type, native ng-admin types, it's function, new defined type ( 'customfile') it's object, hence call off new operator throw error. solution folks?

the use of require('customfield.js') return object, if use import customfield 'customfield.js' instead returns function , works.