Merge branch 'master' of https://github.com/Skillz4Killz/Discordeno into unit-tests

src/handlers/channel.ts

@@ -1,8 +1,10 @@
 import { endpoints } from "../constants/discord.ts";
+import { cacheHandlers } from "../controllers/cache.ts";
 import { RequestManager } from "../module/requestManager.ts";
 import { structures } from "../structures/mod.ts";
-import type {
+import {
   ChannelEditOptions,
+  ChannelTypes,
   CreateInviteOptions,
   FollowedChannelPayload,
   GetMessages,
@@ -160,6 +162,15 @@ export async function sendMessage(
     }
   }
 
+  const channel = await cacheHandlers.get("channels", channelID);
+  if (!channel) throw new Error(Errors.CHANNEL_NOT_FOUND);
+  if (
+    ![ChannelTypes.DM, ChannelTypes.GUILD_NEWS, ChannelTypes.GUILD_TEXT]
+      .includes(channel.type)
+  ) {
+    throw new Error(Errors.CHANNEL_NOT_TEXT_BASED);
+  }
+
   const result = await RequestManager.post(
     endpoints.CHANNEL_MESSAGES(channelID),
     {