we need websocket polyfill on relay tests.

package.json

@@ -37,7 +37,8 @@
     "node-fetch": "2",
     "ts-jest": "^29.0.3",
     "tsd": "^0.22.0",
-    "typescript": "^4.9.4"
+    "typescript": "^4.9.4",
+    "websocket-polyfill": "^0.0.3"
   },
   "scripts": {
     "build": "node build.js",

relay.test.js

@@ -1,5 +1,6 @@
 /* eslint-env jest */
 
+require('websocket-polyfill')
 const {
   relayInit,
   generatePrivateKey,
@@ -8,7 +9,6 @@ const {
   signEvent
 } = require('./lib/nostr.cjs')
 
-describe('relay interaction', () => {
 let relay = relayInit('wss://nostr-pub.semisol.dev/')
 
 beforeAll(() => {
@@ -38,9 +38,7 @@ describe('relay interaction', () => {
 
   let sub = relay.sub([
     {
-        ids: [
-          'd7dd5eb3ab747e16f8d0212d53032ea2a7cadef53837e5a6c66d42849fcb9027'
-        ]
+      ids: ['d7dd5eb3ab747e16f8d0212d53032ea2a7cadef53837e5a6c66d42849fcb9027']
     }
   ])
   sub.on('event', event => {
@@ -114,4 +112,3 @@ describe('relay interaction', () => {
     ])
   ).resolves.toEqual([true, true])
 })
-})