Updated to docs format v3, adds support for interfaces

src/structures/interface/TextBasedChannel.js

@@ -1,12 +1,43 @@
-function sendMessage(content, options = {}) {
-  return this.client.rest.methods.sendMessage(this, content, options.tts);
+/**
+ * Interface for classes that have text-channel-like features
+ * @interface
+ */
+class TextBasedChannel {
+  /**
+   * Send a message to this channel
+   * @param {String} content the content to send
+   * @param {MessageOptions} [options={}] the options to provide
+   * @returns {Promise<Message>}
+   * @example
+   * // send a message
+   * channel.sendMessage('hello!')
+   *  .then(message => console.log(`Sent message: ${message.content}`))
+   *  .catch(console.log);
+   */
+  sendMessage(content, options = {}) {
+    return this.client.rest.methods.sendMessage(this, content, options.tts);
+  }
+  /**
+   * Send a text-to-speech message to this channel
+   * @param {String} content the content to send
+   * @returns {Promise<Message>}
+   * @example
+   * // send a TTS message
+   * channel.sendTTSMessage('hello!')
+   *  .then(message => console.log(`Sent tts message: ${message.content}`))
+   *  .catch(console.log);
+   */
+  sendTTSMessage(content) {
+    return this.client.rest.methods.sendMessage(this, content, true);
+  }
 }
 
-function sendTTSMessage(content) {
-  return this.client.rest.methods.sendMessage(this, content, true);
+function applyProp(structure, prop) {
+  structure.prototype[prop] = TextBasedChannel.prototype[prop];
 }
 
 exports.applyToClass = structure => {
-  structure.prototype.sendMessage = sendMessage;
-  structure.prototype.sendTTSMessage = sendTTSMessage;
+  for (const prop of ['sendMessage', 'sendTTSMessage']) {
+    applyProp(structure, prop);
+  }
 };