Deprecate all the things

src/structures/GuildMember.js

@@ -3,6 +3,7 @@ const Role = require('./Role');
 const Permissions = require('../util/Permissions');
 const Collection = require('../util/Collection');
 const Presence = require('./Presence').Presence;
+const util = require('util');
 
 /**
  * Represents a member of a guild on Discord
@@ -513,4 +514,7 @@ class GuildMember {
 
 TextBasedChannel.applyToClass(GuildMember);
 
+GuildMember.prototype.hasPermissions = util.deprecate(GuildMember.prototype.hasPermissions,
+  'GuildMember#hasPermissions is deprecated - use GuildMember#hasPermission, it now takes an array');
+
 module.exports = GuildMember;

src/structures/MessageCollector.js

@@ -1,4 +1,5 @@
 const Collector = require('./interfaces/Collector');
+const util = require('util');
 
 /**
  * @typedef {CollectorOptions} MessageCollectorOptions
@@ -50,6 +51,14 @@ class MessageCollector extends Collector {
     this.on('collect', this._reEmitter);
   }
 
+  // TODO: Remove me in v12
+  on(eventName, listener) {
+    if (eventName === 'message') {
+      listener = util.deprecate(listener, 'MessageCollector will soon no longer emit "message", use "collect" instead');
+    }
+    super.on(eventName, listener);
+  }
+
   /**
    * Handle an incoming message for possible collection.
    * @param {Message} message The message that could be collected.

src/structures/Role.js

@@ -1,5 +1,6 @@
 const Snowflake = require('../util/Snowflake');
 const Permissions = require('../util/Permissions');
+const util = require('util');
 
 /**
  * Represents a role on Discord
@@ -350,4 +351,8 @@ class Role {
   }
 }
 
+Role.prototype.hasPermissions = util
+  .deprecate(Role.prototype.hasPermissions,
+    'Role#hasPermissions is deprecated - use Role#hasPermission instead, it now takes an array');
+
 module.exports = Role;