Show pubkey copy things

frontend/src/lib/pubkey.ts

@@ -1,3 +1,19 @@
+import { npubEncode } from "applesauce-core/helpers/pointers"
+
 export function shortenPubkey(pubkey: string) {
   return pubkey.length <= 16 ? pubkey : `${pubkey.slice(0, 8)}...${pubkey.slice(-8)}`
 }
+
+// Encode a hex pubkey as an npub for display. Falls back to the raw input when it
+// isn't a valid pubkey, since npubEncode throws on malformed input.
+export function toNpub(pubkey: string) {
+  try {
+    return npubEncode(pubkey)
+  } catch {
+    return pubkey
+  }
+}
+
+export function shortenNpub(pubkey: string) {
+  return shortenPubkey(toNpub(pubkey))
+}