angular - ng build --prod removes navbar -

the --prod cli flag reason removes navbar compiled output. ideas why?

my app.component looks this:

import { component } '@angular/core'; import { router_directives } '@angular/router';  @component({   selector: 'app-root',   template: `             <nav-bar></nav-bar>              <router-outlet>             </router-outlet>`,   directives: [router_directives] })  export class appcomponent {} 

and navbar component:

import { component, oninit } '@angular/core'; import { globalevent } '../shared/global.event'  import { http, response } '@angular/http';  @component({     selector: 'nav-bar',     templateurl: 'navbar.component.html',     providers: [globalevent],     styleurls: ['navbar.component.css'], }) export class navbarcomponent implements oninit {    ... } 

note: building --dev flag works expected. hope isn't cli issue.

apparently known issue angular-cli. see here.

fix going nano node_modules/angular-cli/addon/ng2/models/webpack-build-production.ts

and changing mangle: { screw_ie8 : true }, //prod

to mangle: { screw_ie8 : true, keep_fnames:true }, //prod