nip05.queryProfile() and test.

nip05.test.js

@@ -0,0 +1,20 @@
+/* eslint-env jest */
+
+const fetch = require('node-fetch')
+const {nip05} = require('./lib/nostr.cjs')
+
+test('fetch nip05 profiles', async () => {
+  nip05.useFetchImplementation(fetch)
+
+  let p1 = await nip05.queryProfile('jb55.com')
+  expect(p1.pubkey).toEqual(
+    '32e1827635450ebb3c5a7d12c1f8e7b2b514439ac10a67eef3d9fd9c5c68e245'
+  )
+  expect(p1.relays).toEqual(['wss://relay.damus.io'])
+
+  let p2 = await nip05.queryProfile('jb55@jb55.com')
+  expect(p2.pubkey).toEqual(
+    '32e1827635450ebb3c5a7d12c1f8e7b2b514439ac10a67eef3d9fd9c5c68e245'
+  )
+  expect(p2.relays).toEqual(['wss://relay.damus.io'])
+})

nip05.ts

@@ -1,3 +1,5 @@
+import {ProfilePointer} from './nip19'
+
 var _fetch = fetch
 
 export function useFetchImplementation(fetchImplementation: any) {
@@ -19,13 +21,28 @@ export async function searchDomain(
   }
 }
 
-export async function queryName(fullname: string): Promise<string> {
+export async function queryProfile(
+  fullname: string
+): Promise<ProfilePointer | null> {
   let [name, domain] = fullname.split('@')
-  if (!domain) throw new Error('invalid identifier, must contain an @')
+
+  if (!domain) {
+    // if there is no @, it is because it is just a domain, so assume the name is "_"
+    domain = name
+    name = '_'
+  }
 
   let res = await (
     await _fetch(`https://${domain}/.well-known/nostr.json?name=${name}`)
   ).json()
 
-  return res.names && res.names[name]
+  if (!res?.names?.[name]) return null
+
+  let pubkey = res.names[name] as string
+  let relays = (res.relays?.[pubkey] || []) as string[] // nip35
+
+  return {
+    pubkey,
+    relays
+  }
 }

nip19.ts

@@ -1,12 +1,12 @@
 import * as secp256k1 from '@noble/secp256k1'
 import {bech32} from 'bech32'
 
-type ProfilePointer = {
+export type ProfilePointer = {
   pubkey: string // hex
   relays?: string[]
 }
 
-type EventPointer = {
+export type EventPointer = {
   id: string // hex
   relays?: string[]
 }

package.json

@@ -36,6 +36,7 @@
     "esm-loader-typescript": "^1.0.1",
     "events": "^3.3.0",
     "jest": "^29.3.1",
+    "node-fetch": "2",
     "ts-jest": "^29.0.3",
     "tsd": "^0.22.0",
     "typescript": "^4.9.4"