import { checkGuildTextBasedChannel } from "https://deno.land/x/harmony@v2.6.0/src/structures/guildTextChannel.ts";
type
(channel: TextChannel) => channel is GuildTextBasedChannel
x/harmony/src/structures/guildTextChannel.ts>checkGuildTextBasedChannel
import { checkGuildTextBasedChannel } from "https://deno.land/x/harmony@v2.6.0/src/structures/guildTextChannel.ts";