import { InjectionToken } from '@angular/core' ; import type { SbbAccordion } from './accordion' ; /**
 * Token used to provide a `SbbAccordion` to `SbbExpansionPanel`.
 * Used primarily to avoid circular imports between `SbbAccordion` and `SbbExpansionPanel`.
 */ export const SBB_ACCORDION = new InjectionToken < SbbAccordion > ( 'SBB_ACCORDION' ) ;