This is a test of many libraries Ionic users have had issues with due to Typings and or Rollup.
In short, most libraries just work with Rollup. They just need to be imported correctly.
Some libraries have weird default exports. There is a way to get around that too.
Here is a document with the test results. https://docs.google.com/spreadsheets/d/124VhzYm5gHrBowWAUolfOsVBNTcxTELWauAjKKWAUBQ/edit
Here is a sample project using Firebase/AngularFire2. https://github.com/danbucholtz/ionic-rollup-angularfire2