class LRUCacheimport { LRUCache } from "https://dotland.deno.dev/x/polkadot@0.2.38/rpc-provider/lru.ts"; ConstructorsnewLRUCache(capacity?)Propertiesreadonlycapacity: numberreadonlylength: numberreadonlylengthData: numberreadonlylengthRefs: numberMethodsentries(): [string, unknown][]get<T>(key: string): T | nullkeys(): string[]set<T>(key: string, value: T): void