function firstMemoimport { firstMemo } from "https://deno.land/x/polkadot@0.2.40/api-derive/util/index.ts"; firstMemo<T, A extends any[]>(fn: (api: DeriveApi, ...args: A) => Observable<T[]>): (instanceId: string, api: DeriveApi) => (...args: A) => Observable<T>Type ParametersTA extends any[]Parametersfn: (api: DeriveApi, ...args: A) => Observable<T[]>Returns(instanceId: string, api: DeriveApi) => (...args: A) => Observable<T>