import { combineEras } from "https://deno.land/x/polkadot@0.2.12/api-derive/staking/util.ts";
Parameters
fn: F
Returns
(instanceId: string, api: DeriveApi) => (eras: EraIndex[], withActive: boolean) => Observable<ObsInnerType<ApplyReturn<F>>[]>
import { combineEras } from "https://deno.land/x/polkadot@0.2.12/api-derive/staking/util.ts";