subscribeNewHeads | /api-derive/chain/index.ts | polkadot@0.2.45

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function subscribeNewHeads

import { subscribeNewHeads } from "https://deno.land/x/polkadot@0.2.45/api-derive/chain/index.ts";

subscribeNewHeads(instanceId: string, api: DeriveApi): () => Observable<HeaderExtended>

Examples

api.derive.chain.subscribeNewHeads((header) => {
  console.log(`block #${header.number} was authored by ${header.author}`);
});

instanceId: string

api: DeriveApi

() => Observable<HeaderExtended>

A header with the current header (including extracted author)