Can't use on angular

[Freir96]

Describe the bug
I have imported accessibilityButtons as shown in the README, and it didn't casue any error:
import { accessibilityButtons } from 'accessibility-buttons/dist/js/accessibility-buttons';
But Calling accessibilityButtons() results in error Object(...) is not a function.
If this library does not work on angular please update your README.

To Reproduce
Steps to reproduce the behavior:

1. Create Angular project
2. import accessibilityButtons in a component
3. call accessibilityButtons()
4. See error

Expected behavior
The accessibilityButtons should be initiated

Enviroment (please complete the following information):

• Windows
• Opera

** Error message

main.ts:12 TypeError: Object(...) is not a function
  at new AppComponent (app.component.ts:42)
  at createClass (core.js:24584)
  at createDirectiveInstance (core.js:24400)
  at createViewNodes (core.js:35006)
  at createRootView (core.js:34878)
  at callWithDebugContext (core.js:36407)
  at Object.debugCreateRootView [as createRootView] (core.js:35644)
  at ComponentFactory_.create (core.js:23542)
  at ComponentFactoryBoundToModule.create (core.js:19549)
  at ApplicationRef.bootstrap (core.js:32042)

[tiagoporto]

Thanks @Freir96, I'll take a look