1 files changed, 24 insertions, 1 deletions
diff --git a/src/util/entities/Channel.ts b/src/util/entities/Channel.ts
index 72490028..19a7a41a 100644
--- a/src/util/entities/Channel.ts
+++ b/src/util/entities/Channel.ts
@@ -486,6 +486,29 @@ export enum ChannelPermissionOverwriteType {
 export interface DMChannel extends Omit<Channel, "type" | "recipients"> {
 	type: ChannelType.DM | ChannelType.GROUP_DM;
 	recipients: Recipient[];
+}
 
-	// TODO: probably more props
+// TODO: probably more props
+export function isTextChannel(type: ChannelType): boolean {
+	switch (type) {
+		case ChannelType.GUILD_STORE:
+		case ChannelType.GUILD_VOICE:
+		case ChannelType.GUILD_STAGE_VOICE:
+		case ChannelType.GUILD_CATEGORY:
+		case ChannelType.GUILD_FORUM:
+		case ChannelType.DIRECTORY:
+			throw new HTTPError("not a text channel", 400);
+		case ChannelType.DM:
+		case ChannelType.GROUP_DM:
+		case ChannelType.GUILD_NEWS:
+		case ChannelType.GUILD_NEWS_THREAD:
+		case ChannelType.GUILD_PUBLIC_THREAD:
+		case ChannelType.GUILD_PRIVATE_THREAD:
+		case ChannelType.GUILD_TEXT:
+		case ChannelType.ENCRYPTED:
+		case ChannelType.ENCRYPTED_THREAD:
+			return true;
+		default:
+			throw new HTTPError("unimplemented", 400);
+	}
 }