title: Error build Angular by library ng-multiselect-dropdown
body: <p>from now, thank you for you help.
  I am in need of help with my Angular project. I am wanting to do a build, so I can upload it to my server, but when I run the command I get this error.</p>
  
  <p><a href="https://i.stack.imgur.com/DN8sS.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/DN8sS.png" alt="enter image description here"></a></p>
  
  <p>My version angular-cli</p>
  
  <p><a href="https://i.stack.imgur.com/LJRwZ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/LJRwZ.png" alt="enter image description here"></a></p>
  
  <p>My package.json</p>
  
  <pre><code>{
    "name": "gestion-equipos-frontend",
    "version": "0.0.0",
    "scripts": {
      "ng": "ng",
      "start": "ng serve",
      "build": "ng build",
      "test": "ng test",
      "lint": "ng lint",
      "e2e": "ng e2e"
    },
    "private": true,
    "dependencies": {
      "@angular/animations": "~8.1.2",
      "@angular/cdk": "^8.2.3",
      "@angular/common": "~8.1.2",
      "@angular/compiler": "~8.1.2",
      "@angular/core": "~8.1.2",
      "@angular/forms": "~8.1.2",
      "@angular/http": "^7.2.16",
      "@angular/material": "^8.2.3",
      "@angular/platform-browser": "~8.1.2",
      "@angular/platform-browser-dynamic": "~8.1.2",
      "@angular/router": "~8.1.2",
      "@ng-bootstrap/ng-bootstrap": "^5.3.0",
      "@ng-select/ng-select": "^3.7.2",
      "@schematics/angular": "^8.3.25",
      "@syncfusion/ej2": "^17.4.50",
      "@syncfusion/ej2-angular-dropdowns": "^17.4.50",
      "chart.js": "^2.9.3",
      "chartjs-plugin-annotation": "^0.5.7",
      "jquery": "^3.4.1",
      "ng-multiselect-dropdown": "^0.2.10",
      "ng2-charts": "^2.3.0",
      "ngx-pagination": "^4.1.0",
      "rxjs": "~6.4.0",
      "sweetalert2": "^8.19.0",
      "tslib": "^1.10.0",
      "zone.js": "~0.9.1"
    },
    "devDependencies": {
      "@angular-devkit/build-angular": "^0.801.3",
      "@angular/cli": "~8.1.2",
      "@angular/compiler-cli": "~8.1.2",
      "@angular/language-service": "~8.1.2",
      "@types/jasmine": "~3.3.8",
      "@types/jasminewd2": "^2.0.8",
      "@types/jquery": "^3.3.32",
      "@types/node": "~8.9.4",
      "codelyzer": "^5.2.1",
      "jasmine-core": "~3.4.0",
      "jasmine-spec-reporter": "~4.2.1",
      "karma": "~4.1.0",
      "karma-chrome-launcher": "~2.2.0",
      "karma-coverage-istanbul-reporter": "~2.0.1",
      "karma-jasmine": "~2.0.1",
      "karma-jasmine-html-reporter": "^1.5.2",
      "protractor": "^5.4.3",
      "ts-node": "~7.0.0",
      "tslint": "~5.15.0",
      "typescript": "~3.4.3"
    }
  }
  </code></pre>
  
  <p>I tried to change the version of ng-multiselect-dropdown, but it does not work.</p>
  
  <pre><code>Date: 2020-04-20T17:35:10.624Z - Hash: b4f0ca043a73da9dd0b4
  1 unchanged chunks
  chunk {0} runtime.ddc91d8bbbefe07a25ea.js, runtime.ddc91d8bbbefe07a25ea.js.map (runtime) 1.46 kB [entry] [rendered]
  chunk {1} main.f1be7b5afedf7cad754c.js, main.f1be7b5afedf7cad754c.js.map (main) 1.8 MB [initial] [rendered]
  chunk {2} polyfills.f9be0135f9d2eb97d281.js, polyfills.f9be0135f9d2eb97d281.js.map (polyfills) 36.3 kB [initial] [rendered]
  chunk {3} styles.180ffb55b74a9cc004de.css, styles.180ffb55b74a9cc004de.css.map (styles) 66.1 kB [initial] [rendered]
  Time: 55820ms
  
  ERROR in src/app/components/equipo/equipo.component.ts:25:35 - error TS2307: Cannot find module 'ng-multiselect-dropdown'.
  
  25 import { IDropdownSettings } from 'ng-multiselect-dropdown';
                                       ~~~~~~~~~~~~~~~~~~~~~~~~~
  src/app/components/usuario/usuario.component.ts:15:35 - error TS2307: Cannot find module 'ng-multiselect-dropdown'.
  
  15 import { IDropdownSettings } from 'ng-multiselect-dropdown';
                                       ~~~~~~~~~~~~~~~~~~~~~~~~~
  src/app/app.module.ts:44:45 - error TS2307: Cannot find module 'ng-multiselect-dropdown'.
  
  44 import { NgMultiSelectDropDownModule } from 'ng-multiselect-dropdown';
                                                 ~~~~~~~~~~~~~~~~~~~~~~~~~
  
  ERROR in ./node_modules/ng-multiselect-dropdown/fesm2015/ng-multiselect-dropdown.js
  Module build failed (from ./node_modules/@angular-devkit/build-optimizer/src/build-optimizer/webpack-loader.js):
  TypeError: Cannot read property 'kind' of undefined
      at isAngularDecoratorMetadataExpression (C:\Users\lbrizuela\GestionEquiposFrontend\node_modules\@angular-devkit\build-optimizer\src\transforms\scrub-file.js:265:35)
      at checkNodeForDecorators (C:\Users\lbrizuela\GestionEquiposFrontend\node_modules\@angular-devkit\build-optimizer\src\transforms\scrub-file.js:77:21)
      at visitNodes (C:\Users\lbrizuela\GestionEquiposFrontend\node_modules\typescript\lib\typescript.js:16514:30)
      at Object.forEachChild (C:\Users\lbrizuela\GestionEquiposFrontend\node_modules\typescript\lib\typescript.js:16740:24)
      at checkNodeForDecorators (C:\Users\lbrizuela\GestionEquiposFrontend\node_modules\@angular-devkit\build-optimizer\src\transforms\scrub-file.js:68:31)
      at visitNode (C:\Users\lbrizuela\GestionEquiposFrontend\node_modules\typescript\lib\typescript.js:16505:24)
      at Object.forEachChild (C:\Users\lbrizuela\GestionEquiposFrontend\node_modules\typescript\lib\typescript.js:16635:21)
      at checkNodeForDecorators (C:\Users\lbrizuela\GestionEquiposFrontend\node_modules\@angular-devkit\build-optimizer\src\transforms\scrub-file.js:68:31)
      at visitNode (C:\Users\lbrizuela\GestionEquiposFrontend\node_modules\typescript\lib\typescript.js:16505:24)
      at Object.forEachChild (C:\Users\lbrizuela\GestionEquiposFrontend\node_modules\typescript\lib\typescript.js:16703:24)
      at checkNodeForDecorators (C:\Users\lbrizuela\GestionEquiposFrontend\node_modules\@angular-devkit\build-optimizer\src\transforms\scrub-file.js:68:31)
      at visitNode (C:\Users\lbrizuela\GestionEquiposFrontend\node_modules\typescript\lib\typescript.js:16505:24)
      at Object.forEachChild (C:\Users\lbrizuela\GestionEquiposFrontend\node_modules\typescript\lib\typescript.js:16692:24)
      at checkNodeForDecorators (C:\Users\lbrizuela\GestionEquiposFrontend\node_modules\@angular-devkit\build-optimizer\src\transforms\scrub-file.js:68:31)
      at visitNode (C:\Users\lbrizuela\GestionEquiposFrontend\node_modules\typescript\lib\typescript.js:16505:24)
      at Object.forEachChild (C:\Users\lbrizuela\GestionEquiposFrontend\node_modules\typescript\lib\typescript.js:16599:21)
  ERROR in src/app/app.module.ts(113,5): Error during template compile of 'AppModule'
    Could not resolve ng-multiselect-dropdown relative to [object Object]..
  src/app/app.module.ts(113,5): Error during template compile of 'AppModule'
    Could not resolve ng-multiselect-dropdown relative to [object Object]..
  : Can't bind to 'placeholder' since it isn't a known property of 'ng-multiselect-dropdown'.
  1. If 'placeholder' is an Angular directive, then add 'CommonModule' to the '@NgModule.imports' of this component.
  2. To allow any property add 'NO_ERRORS_SCHEMA' to the '@NgModule.schemas' of this component. ("s="box-info col-md-12 mt-4" *ngIf="vendedoresLoaded"&gt;
                      &lt;ng-multiselect-dropdown [ERROR -&gt;][placeholder]="'Vendedores'" [data]="dropdownList" [(ngModel)]="selectedItems" [settings]="dropdownSe")
  : Can't bind to 'data' since it isn't a known property of 'ng-multiselect-dropdown'.
  1. If 'data' is an Angular directive, then add 'CommonModule' to the '@NgModule.imports' of this component.
  2. To allow any property add 'NO_ERRORS_SCHEMA' to the '@NgModule.schemas' of this component. ("ngIf="vendedoresLoaded"&gt;
                      &lt;ng-multiselect-dropdown [placeholder]="'Vendedores'" [ERROR -&gt;][data]="dropdownList" [(ngModel)]="selectedItems" [settings]="dropdownSettings" (onSelect)="onItemSel")
  : Can't bind to 'settings' since it isn't a known property of 'ng-multiselect-dropdown'.
  1. If 'settings' is an Angular directive, then add 'CommonModule' to the '@NgModule.imports' of this component.
  2. To allow any property add 'NO_ERRORS_SCHEMA' to the '@NgModule.schemas' of this component. ("multiselect-dropdown [placeholder]="'Vendedores'" [data]="dropdownList" [(ngModel)]="selectedItems" [ERROR -&gt;][settings]="dropdownSettings" (onSelect)="onItemSelect($event)" (onSelectAll)="onSelectAll($event)" n")
  : 'ng-multiselect-dropdown' is not a known element:
  1. If 'ng-multiselect-dropdown' is an Angular component, then verify that it is part of this module.
  2. If 'ng-multiselect-dropdown' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule.schemas' of this component to suppress this message. ("                &lt;div class="box-info col-md-12 mt-4" *ngIf="vendedoresLoaded"&gt;
                      [ERROR -&gt;]&lt;ng-multiselect-dropdown [placeholder]="'Vendedores'" [data]="dropdownList" [(ngModel)]="selectedItem")     
  </code></pre>
  
  <p>Thank you.</p>