import { createAction } from '@ngrx/store' ; export const toggleVisualization = createAction ( '[Button] Toggle visualization' ) ; export const first = createAction ( '[Button] First line number' ) ; export const next = createAction ( '[Button] Increment line number' ) ; export const previous = createAction ( '[Button] Decrement line number' ) ; export const last = createAction ( '[Button] Last line number' ) ;