@ethersphere/bee-js/dist/mjs/feed/identifier.js

Javascript client for Bee

import { Binary } from 'cafe-utility';
import { FeedIndex, Identifier } from "../utils/typed-bytes.js";
export function makeFeedIdentifier(topic, index) {
  index = typeof index === 'number' ? FeedIndex.fromBigInt(BigInt(index)) : index;
  return new Identifier(Binary.keccak256(Binary.concatBytes(topic.toUint8Array(), index.toUint8Array())));
}