Store objects in a WeakMap

So comparisons like `DiscordApi.currentUser === DiscordApi.currentUser` can be true

client/src/structs/discord/channel.js

@@ -5,9 +5,14 @@ import { Guild } from './guild';
 import { Message } from './message';
 import { User, GuildMember } from './user';
 
+const channels = new WeakMap();
+
 export class Channel {
 
     constructor(data) {
+        if (channels.has(data)) return channels.get(data);
+        channels.set(data, this);
+
         this.discordObject = data;
     }
 

client/src/structs/discord/guild.js

@@ -4,9 +4,14 @@ import { List } from 'structs';
 import { Channel } from './channel';
 import { GuildMember } from './user';
 
+const guilds = new WeakMap();
+
 export class Guild {
 
     constructor(data) {
+        if (guilds.has(data)) return guilds.get(data);
+        guilds.set(data, this);
+
         this.discordObject = data;
     }
 

client/src/structs/discord/message.js

@@ -3,9 +3,14 @@ import { DiscordApi, DiscordApiModules as Modules } from 'modules';
 import { Channel } from './channel';
 import { User } from './user';
 
+const messages = new WeakMap();
+
 export class Message {
 
     constructor(data) {
+        if (messages.has(data)) return messages.get(data);
+        messages.set(data, this);
+
         this.discordObject = data;
     }
 
@@ -61,7 +66,7 @@ export class Message {
      * @param {Boolean} parse Whether to parse the message or update it as it is
      */
     edit(content, parse = false) {
-        if (this.author.id !== DiscordApi.currentUser.id)
+        if (this.author !== DiscordApi.currentUser)
             throw new Error('Cannot edit messages sent by other users.');
         if (parse) Modules.MessageActions.editMessage(this.channel_id, this.id, Modules.MessageParser.parse(this.discordObject, content));
         else Modules.MessageActions.editMessage(this.channel_id, this.id, {content});
@@ -71,7 +76,7 @@ export class Message {
      * Start the edit mode of the UI.
      */
     startEdit() {
-        if (this.author.id !== DiscordApi.currentUser.id)
+        if (this.author !== DiscordApi.currentUser)
             throw new Error('Cannot edit messages sent by other users.');
         Modules.MessageActions.startEditMessage(this.channel_id, this.id, this.content);
     }

client/src/structs/discord/user.js

@@ -4,9 +4,15 @@ import { List, InsufficientPermissions } from 'structs';
 import { Guild } from './guild';
 import { PrivateChannel } from './channel';
 
+const users = new WeakMap();
+
 export class User {
 
-    constructor(data) {
+    constructor(data, _wm) {
+        if (!_wm) _wm = users;
+        if (_wm.has(data)) return _wm.get(data);
+        _wm.set(data, this);
+
         this.discordObject = data;
     }
 
@@ -74,11 +80,13 @@ export class User {
 
 }
 
+const guild_members = new WeakMap();
+
 // TODO: don't extend User
 export class GuildMember extends User {
     constructor(data, guild_id) {
         const user = Modules.UserStore.getUser(data.userId);
-        super(user);
+        super(user, guild_members);
 
         this.member_data = data;
         this.guild_id = guild_id;