additional validation

src/managers/ChannelMessageManager.js

@@ -26,6 +26,10 @@ class ChannelMessageManager extends BaseCacheManager {
 
     if (!(client instanceof Client))
       throw new TypeError("GLUON: Client must be a Client instance.");
+    if (!guild)
+      throw new TypeError("GLUON: Guild must be a valid guild instance.");
+    if (!channel)
+      throw new TypeError("GLUON: Channel must be a valid channel instance.");
 
     /**
      * The client instance.

src/managers/GuildChannelsManager.js

@@ -25,6 +25,8 @@ class GuildChannelsManager extends BaseCacheManager {
 
     if (!(client instanceof Client))
       throw new TypeError("GLUON: Client must be a Client instance.");
+    if (!guild)
+      throw new TypeError("GLUON: Guild must be a valid guild instance.");
 
     /**
      * The client instance.

src/managers/GuildEmojisManager.js

@@ -19,6 +19,8 @@ class GuildEmojisManager extends BaseCacheManager {
 
     if (!(client instanceof Client))
       throw new TypeError("GLUON: Client must be a Client instance.");
+    if (!guild)
+      throw new TypeError("GLUON: Guild must be a valid guild instance.");
 
     /**
      * The client instance.

src/managers/GuildInviteManager.js

@@ -21,6 +21,8 @@ class GuildInviteManager extends BaseCacheManager {
 
     if (!(client instanceof Client))
       throw new TypeError("GLUON: Client must be a Client instance.");
+    if (!guild)
+      throw new TypeError("GLUON: Guild must be a valid guild instance.");
 
     /**
      * The client instance.

src/managers/GuildMemberManager.js

@@ -19,6 +19,8 @@ class GuildMemberManager extends BaseCacheManager {
 
     if (!(client instanceof Client))
       throw new TypeError("GLUON: Client must be a Client instance.");
+    if (!guild)
+      throw new TypeError("GLUON: Guild must be a valid guild instance.");
 
     /**
      * The client instance.

src/managers/GuildRoleManager.js

@@ -20,6 +20,8 @@ class GuildRoleManager extends BaseCacheManager {
 
     if (!(client instanceof Client))
       throw new TypeError("GLUON: Client must be a Client instance.");
+    if (!guild)
+      throw new TypeError("GLUON: Guild must be a valid guild instance.");
 
     /**
      * The client instance.

src/managers/GuildScheduledEventManager.js

@@ -11,6 +11,8 @@ class GuildScheduledEventManager extends BaseCacheManager {
 
     if (!(client instanceof Client))
       throw new TypeError("GLUON: Client must be a Client instance.");
+    if (!guild)
+      throw new TypeError("GLUON: Guild must be a valid guild instance.");
 
     /**
      * The client instance.

src/managers/MessagePollManager.js

@@ -14,6 +14,8 @@ class MessagePollManager {
   constructor(client, existingResponses = {}) {
     if (!(client instanceof Client))
       throw new TypeError("GLUON: Client must be an instance of Client.");
+    if (typeof existingResponses !== "object")
+      throw new TypeError("GLUON: Existing responses must be an object.");
 
     /**
      * The client instance.

src/managers/MessageReactionManager.js

@@ -16,6 +16,9 @@ class MessageReactionManager {
   constructor(client, guild, existingReactions = {}) {
     if (!(client instanceof Client))
       throw new TypeError("GLUON: Client must be an instance of Client.");
+    if (!guild) throw new TypeError("GLUON: Guild must be provided.");
+    if (typeof existingReactions !== "object")
+      throw new TypeError("GLUON: Existing reactions must be an object.");
 
     /**
      * The client instance.