Switch to monorepo setup

packages/util/Relays.ts

@@ -0,0 +1,33 @@
+import {normalizeUrl, stripProtocol} from '@coracle.social/lib'
+
+export const isShareableRelayUrl = (url: string) =>
+  Boolean(
+    typeof url === 'string' &&
+    // Is it actually a websocket url and has a dot
+    url.match(/^wss:\/\/.+\..+/) &&
+    // Sometimes bugs cause multiple relays to get concatenated
+    url.match(/:\/\//g)?.length === 1 &&
+    // It shouldn't have any whitespace, url-encoded or otherwise
+    !url.match(/\s|%/) &&
+    // Don't match stuff with a port number
+    !url.slice(6).match(/:\d+/) &&
+    // Don't match raw ip addresses
+    !url.slice(6).match(/\d+\.\d+\.\d+\.\d+/) &&
+    // Skip nostr.wine's virtual relays
+    !url.slice(6).match(/\/npub/)
+  )
+
+export const normalizeRelayUrl = (url: string) => {
+  // Use our library to normalize
+  url = normalizeUrl(url, {stripHash: true, stripAuthentication: false})
+
+  // Strip the protocol since only wss works
+  url = stripProtocol(url)
+
+  // Urls without pathnames are supposed to have a trailing slash
+  if (!url.includes("/")) {
+    url += "/"
+  }
+
+  return "wss://" + url
+}