Don't totally deprecate !mdn

src/features/commands.ts

@@ -1,3 +1,5 @@
+/* eslint-disable @typescript-eslint/no-use-before-define */
+import fetch from "node-fetch";
 import {
   APIEmbed,
   ChannelType,
@@ -386,9 +388,49 @@ Here's an article explaining the difference between the two: https://goshakkk.na
     help: `allows you to search something on MDN, usage: !mdn Array.prototype.map`,
     category: "Web",
     handleMessage: async (msg) => {
-      await msg.channel.send(
-        "The !mdn command has been replaced with a slash command! Try out /mdn",
-      );
+      const [, ...args] = msg.content.split(" ");
+      const query = args.join(" ");
+      const [fetchMsg, res] = await Promise.all([
+        msg.channel.send(`Fetching "${query}"...`),
+        fetch(
+          `https://developer.mozilla.org/api/v1/search?highlight=false&locale=en-us&q=${query}`,
+        ),
+      ]);
+
+      const { documents } = (await res.json()) as {
+        documents: (
+          | { title: string; excerpt: string; mdn_url: string }
+          | undefined
+        )[];
+      };
+      const [topResult] = documents;
+
+      if (!topResult) {
+        fetchMsg.edit(`Could not find anything on MDN for '${query}'`);
+        return;
+      }
+
+      const { title, excerpt: description, mdn_url: mdnUrl } = topResult;
+
+      await msg.channel.send({
+        content: "-# also did you know there's `/mdn` too",
+        embeds: [
+          {
+            author: {
+              name: "MDN",
+              url: "https://developer.mozilla.org",
+              icon_url:
+                "https://developer.mozilla.org/favicon-48x48.cbbd161b.png",
+            },
+            title,
+            description,
+            color: 0x83d0f2,
+            url: `https://developer.mozilla.org${mdnUrl}`,
+          },
+        ],
+      });
+
+      fetchMsg.delete();
     },
   },
   {