utility.lookupinvite: add recipients field if gdm has name

src/modules/utility.js

@@ -565,23 +565,32 @@ lookupinvite.callback = async function (msg, line) {
     } else if (invite.type == 1) {
       embed.title += " (Group DM)";
       embed.fields.push(
-        {
-          name: "Channel",
-          value: `**${
-            invite.channel.name ??
-            invite.channel.recipients
+        ...[
+          {
+            name: "Channel",
+            value: `**${
+              invite.channel.name ??
+              invite.channel.recipients
+                .map((member) => member.username)
+                .join(", ")
+            }** (${invite.channel.id})`,
+            inline: false,
+          },
+          {
+            name: "Member Count",
+            value: `${STATUS_ICONS.offline}${invite.approximate_member_count} members`,
+            inline: true,
+          },
+          invite.channel.name == null && {
+            name: "Recipients",
+            value: invite.channel.recipients
               .map((member) => member.username)
-              .join(", ")
-          }** (${invite.channel.id})`,
-          inline: false,
-        },
-        {
-          name: "Member Count",
-          value: `${STATUS_ICONS.offline}${invite.approximate_member_count} members`,
-          inline: true,
-        },
-        expires,
-        inviter
+              .join(", "),
+            inline: false,
+          },
+          expires,
+          inviter,
+        ].filter((x) => !!x)
       );
 
       const groupIcon = invite.channel.icon