import { Component } from '@angular/core'; import { AccordionConfig } from 'ngx-bootstrap/accordion'; // such override allows to keep some initial values export function getAccordionConfig(): AccordionConfig { return Object.assign(new AccordionConfig(), { closeOthers: true }); } @Component({ selector: 'demo-accordion-config', templateUrl: './config.html', providers: [{ provide: AccordionConfig, useFactory: getAccordionConfig }] }) export class DemoAccordionConfigComponent {}