Attempt a few extra ways to resolve users

src/commands/link.ts

@@ -59,7 +59,7 @@ export default {
 
     const idToUse = matches ? matches.groups!.id : discordUserInput;
 
-    const user = await resolveUser(client, idToUse);
+    const user = await resolveUser(client, idToUse, interaction.guild);
 
     if (!user) return interaction.editReply('User not found.');
 

src/commands/notes.ts

@@ -95,7 +95,7 @@ export default {
 
     await deferInteraction(interaction);
 
-    const user = await resolveUser(client, idToUse);
+    const user = await resolveUser(client, idToUse, interaction.guild);
 
     if (!user) return interaction.editReply('User not found.');
 

src/utils/discord-user-utils.ts

@@ -1,12 +1,26 @@
-import { Client, User } from 'discord.js';
+import { Client, Guild, User } from 'discord.js';
 
-export async function resolveUser(client: Client, value: string): Promise<User | null | undefined> {
+export async function resolveUser(client: Client, value: string, guild: Guild | null = null): Promise<User | null | undefined> {
   let user: User | null | undefined = null;
 
   try {
     user = await client.users.fetch(value);
-  } catch (e) {
+  } catch {
     user = client.users.cache.find(u => u.username == value);
+
+    if (!user && guild) {
+      user = guild.members.cache.find(m => m.displayName == value)?.user;
+
+      if (!user) {
+        try {
+          const users = await guild.members.fetch({
+            query: value
+          });
+
+          if (users.size > 0) user = users.first()!.user;
+        } catch { }
+      }
+    }
   }
 
   return user;