AOT Fail

I use couple of RXJS operators, I have added them in `gulpfile.js`
```js
// A list of IDs of modules that should remain external to the bundle
// See https://github.com/rollup/rollup/wiki/JavaScript-API#external
external: [
'@angular/core',
'@angular/common',
'@angular/http',
'rxjs/Observable',
'rxjs/Subject',
'rxjs/add/observable/timer',
'rxjs/add/operator/do',
'rxjs/add/operator/takeWhile',
'rxjs/add/operator/switchMap'
],
```
gulp build output:
```
[02:29:00] Finished 'ngc' after 1.41 s
[02:29:00] Starting 'rollup:fesm'...
build/services/browser-xhr.provider.js (1:17) The 'this' keyword is equivalent to 'undefined' at the to
p level of an ES module, and has been rewritten
build/services/browser-xhr.provider.js (1:25) The 'this' keyword is equivalent to 'undefined' at the to
p level of an ES module, and has been rewritten
[02:29:00] Finished 'rollup:fesm' after 159 ms
[02:29:00] Starting 'rollup:umd'...
build/services/browser-xhr.provider.js (1:17) The 'this' keyword is equivalent to 'undefined' at the to
p level of an ES module, and has been rewritten
build/services/browser-xhr.provider.js (1:25) The 'this' keyword is equivalent to 'undefined' at the to
p level of an ES module, and has been rewritten
No name was provided for external module '@angular/core' in options.globals – guessing '_angular_core'
No name was provided for external module '@angular/common' in options.globals – guessing '_angular_comm
on'
No name was provided for external module 'rxjs/Subject' in options.globals – guessing 'rxjs_Subject'
No name was provided for external module 'rxjs/Observable' in options.globals – guessing 'rxjs_Observab
le'
No name was provided for external module '@angular/http' in options.globals – guessing '_angular_http'
[02:29:00] Finished 'rollup:umd' after 64 ms
```
I don't understand why I am getting these errors!

Now when I import the dist package in a new app, I get no errors while compiling, but it is broken at runtime, getting these errors: