interface DeriveCacheimport { type DeriveCache } from "https://deno.land/x/polkadot@0.2.38/api-derive/util/types.ts"; Propertiesdel: (key: string) => voidforEach: (cb: (key: string, value: any) => void) => voidget: <T = any>(key: string) => T | undefinedset: (key: string, value: any) => void