deprecate Guild#defaultChannel (#1752)

.npmrc

@@ -0,0 +1 @@
+package-json=false

src/structures/Guild.js

@@ -1,3 +1,4 @@
+const util = require('util');
 const Long = require('long');
 const User = require('./User');
 const Role = require('./Role');
@@ -291,15 +292,6 @@ class Guild {
     return this.client.voice.connections.get(this.id) || null;
   }
 
-  /**
-   * The `#general` TextChannel of the guild
-   * @type {TextChannel}
-   * @readonly
-   */
-  get defaultChannel() {
-    return this.channels.get(this.id);
-  }
-
   /**
    * The position of this guild
    * <warn>This is only available when using a user account.</warn>
@@ -1093,4 +1085,16 @@ class Guild {
   }
 }
 
+/**
+ * The `#general` TextChannel of the guild
+ * @name Guild#defaultChannel
+ * @type {TextChannel}
+ * @readonly
+ */
+Object.defineProperty(Guild.prototype, 'defaultChannel', {
+  get: util.deprecate(function defaultChannel() {
+    return this.channels.get(this.id);
+  }, 'Guild#defaultChannel: This property is obsolete, will be removed in v12.0.0, and may not function as expected.'),
+});
+
 module.exports = Guild;