Unable to compile an app referencing @syncfusion/ej2-angular-dropdowns

[Usman]

Hi, I have a basic app which works fine with Angular compiler 8 but today I tried upgrading it to Angular 9 and ran into this during ng build:

Any ideas how to fix this? Btw, the typescript had to be upgraded to latest version due to angular 9 dependencies.

ERROR in Failed to compile entry-point @syncfusion/ej2-angular-dropdowns (module as esm5) due to compilation errors:

node_modules/@syncfusion/ej2-angular-dropdowns/@syncfusion/ej2-angular-dropdowns.es5.js:189:31 - error NG1010: Value at position 

0 in the NgModule.declarations of DropDownListModule is not a reference: [object Object]

189                 declarations: [

                                  ~

190                     DropDownListComponent

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

191                 ],

    ~~~~~~~~~~~~~~~~~

node_modules/@syncfusion/ej2-angular-dropdowns/@syncfusion/ej2-angular-dropdowns.es5.js:181:5 - error NG6002: Appears in the NgModule.imports of DropDownListAllModule, but could not be resolved to an NgModule class

181 var DropDownListModule = /** @class */ (function () {

        ~~~~~~~~~~~~~~~~~~

node_modules/@syncfusion/ej2-angular-dropdowns/@syncfusion/ej2-angular-dropdowns.es5.js:181:5 - error NG6003: Appears in the NgModule.exports of DropDownListAllModule, but could not be resolved to an NgModule, Component, Directive, or Pipe class

181 var DropDownListModule = /** @class */ (function () {

        ~~~~~~~~~~~~~~~~~~

node_modules/@syncfusion/ej2-angular-dropdowns/@syncfusion/ej2-angular-dropdowns.es5.js:390:31 - error NG1010: Value at position 

0 in the NgModule.declarations of ComboBoxModule is not a reference: [object Object]

390                 declarations: [

                                  ~

391                     ComboBoxComponent

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

392                 ],

    ~~~~~~~~~~~~~~~~~

node_modules/@syncfusion/ej2-angular-dropdowns/@syncfusion/ej2-angular-dropdowns.es5.js:382:5 - error NG6002: Appears in the NgModule.imports of ComboBoxAllModule, but could not be resolved to an NgModule class

382 var ComboBoxModule = /** @class */ (function () {

        ~~~~~~~~~~~~~~

node_modules/@syncfusion/ej2-angular-dropdowns/@syncfusion/ej2-angular-dropdowns.es5.js:382:5 - error NG6003: Appears in the NgModule.exports of ComboBoxAllModule, but could not be resolved to an NgModule, Component, Directive, or Pipe class

382 var ComboBoxModule = /** @class */ (function () {

        ~~~~~~~~~~~~~~

node_modules/@syncfusion/ej2-angular-dropdowns/@syncfusion/ej2-angular-dropdowns.es5.js:591:31 - error NG1010: Value at position 

0 in the NgModule.declarations of AutoCompleteModule is not a reference: [object Object]

591                 declarations: [

                                  ~

592                     AutoCompleteComponent

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

593                 ],

    ~~~~~~~~~~~~~~~~~

node_modules/@syncfusion/ej2-angular-dropdowns/@syncfusion/ej2-angular-dropdowns.es5.js:583:5 - error NG6002: Appears in the NgModule.imports of AutoCompleteAllModule, but could not be resolved to an NgModule class

583 var AutoCompleteModule = /** @class */ (function () {

        ~~~~~~~~~~~~~~~~~~

node_modules/@syncfusion/ej2-angular-dropdowns/@syncfusion/ej2-angular-dropdowns.es5.js:583:5 - error NG6003: Appears in the NgModule.exports of AutoCompleteAllModule, but could not be resolved to an NgModule, Component, Directive, or Pipe class

583 var AutoCompleteModule = /** @class */ (function () {

        ~~~~~~~~~~~~~~~~~~

node_modules/@syncfusion/ej2-angular-dropdowns/@syncfusion/ej2-angular-dropdowns.es5.js:799:31 - error NG1010: Value at position 

0 in the NgModule.declarations of MultiSelectModule is not a reference: [object Object]

[Sureshkumar P]

Hi Usman, 

 

Greetings from Syncfusion support. 

 

We have checked your requirement. we cannot able to reproduce the reported issue from our end. We have prepared the angular-9 dropdownlist sample. Please find the sample below link.  

 

Sample link: https://www.syncfusion.com/downloads/support/forum/151329/ze/angular9-dropdownlist-826780308  

 

Please find the ng-build and ng-serve comment output screenshot.