[11:18:03] ionic-app-scripts 0.0.48 
[11:18:03] build dev started ... 
[11:18:03] clean started ... 
[11:18:03] clean finished in 4 ms 
[11:18:03] copy started ... 
[11:18:03] transpile started ... 
[11:18:07] transpile finished in 3.75 s 
[11:18:07] rollup started ... 
[11:18:07] copy finished in 3.82 s 
[11:18:13] rollup failed: 'Logger' is not exported by node_modules/angular2-logger/core.js (imported by 
 src/app/app.component.ts). For help fixing this error see 
 https://github.com/rollup/rollup/wiki/Troubleshooting#name-is-not-exported-by-module