js-waku/packages/utils/src/common/index.ts

import type { Multiaddr } from "@multiformats/multiaddr";
export * from "./is_defined.js";
export * from "./random_subset.js";
export * from "./group_by.js";
export * from "./to_async_iterator.js";
export * from "./is_size_valid.js";
export * from "./sharding.js";
export * from "./push_or_init_map.js";
export * from "./relay_shard_codec.js";
export * from "./delay.js";
export * from "./getUniquePubsubTopicsFromDecoders.js";

export function removeItemFromArray(arr: unknown[], value: unknown): unknown[] {
  const index = arr.indexOf(value);
  if (index > -1) {
    arr.splice(index, 1);
  }
  return arr;
}

export function getWsMultiaddrFromMultiaddrs(
  addresses: Multiaddr[]
): Multiaddr {
  const wsMultiaddr = addresses.find(
    (addr) => addr.toString().includes("ws") || addr.toString().includes("wss")
  );
  if (!wsMultiaddr) {
    throw new Error("No ws multiaddr found in the given addresses");
  }
  return wsMultiaddr;
}