method rpcProvider.WsProvider.prototype.onimport { rpcProvider } from "https://dotland.deno.dev/x/polkadot@0.2.38/mod.ts"; const { WsProvider } = rpcProvider; on(type: ProviderInterfaceEmitted, sub: ProviderInterfaceEmitCb): () => voidParameterstype: ProviderInterfaceEmittedEvent sub: ProviderInterfaceEmitCbCallback Returns() => voidunsubscribe function