nostr-web-components/lib/nostr.js

collection of web components that provide quick access to basic nostr things

import { SimplePool } from "@nostr/tools/pool";
import { loadRelayList } from "@nostr/gadgets/lists";
import { setPool } from "@nostr/gadgets/global";
import { loadNostrUser } from "@nostr/gadgets/metadata";
import { decode } from "@nostr/tools/nip19";
import { queryProfile } from "@nostr/tools/nip05";
const pool = window.nostrSharedPool || new SimplePool();
window.nostrSharedPool = pool;
setPool(pool);
const lrl = window.nostrSharedRelayListLoader || loadRelayList;
window.nostrSharedRelayListLoader = lrl;
const lnu = window.nostrSharedMetadataLoader || loadNostrUser;
window.nostrSharedMetadataLoader = lnu;
async function fetchNostrUser(pubkey, relays) {
  return await lnu({ pubkey, relays });
}
async function getOutboxRelaysFor(pubkey) {
  let rl = await lrl(pubkey);
  return rl.items.filter((r) => r.write).map((r) => r.url);
}
async function getInboxRelaysFor(pubkey) {
  let rl = await lrl(pubkey);
  return rl.items.filter((r) => r.read).map((r) => r.url);
}
async function inputToPubkey(input) {
  try {
    const { type, data } = decode(input);
    if (type === "nprofile") {
      return [data.pubkey, data.relays || []];
    } else if (type === "npub") {
      return [data, []];
    }
  } catch (err) {
    if (input.match(/[0-9a-f]{64}/)) {
      return [input, []];
    } else if (input.match(".")) {
      let res = await queryProfile(input);
      if (!res)
        return [void 0];
      return [res.pubkey, res.relays || []];
    }
  }
  return [void 0];
}
async function getWindowNostr() {
  const wn = window.nostr;
  if (!wn) {
    return new Promise((resolve, reject) => {
      try {
        let script = document.createElement("script");
        script.onload = () => resolve(window.nostr);
        script.src = "https://cdn.jsdelivr.net/npm/window.nostr.js/dist/window.nostr.min.js";
        document.head.appendChild(script);
      } catch (err) {
        reject(err);
      }
    });
  }
  return wn;
}
export {
  fetchNostrUser,
  getInboxRelaysFor,
  getOutboxRelaysFor,
  getWindowNostr,
  inputToPubkey,
  pool
};