fix(ApplicationCommand): remove false positives in equals

This fixes a bug where having a local command that doesn't declare integrationTypes explicitly would cause it to not be equal to the command returned by Discord as they send a default value of [ 0 ]

fix: use Object.keys()

fix: default to client config and use enum

fix: also change default value in this

Author: ImRodry

packages/discord.js/src/structures/ApplicationCommand.js

@@ -1,7 +1,7 @@
 'use strict';
 
 const { DiscordSnowflake } = require('@sapphire/snowflake');
-const { ApplicationCommandOptionType } = require('discord-api-types/v10');
+const { ApplicationCommandOptionType, ApplicationIntegrationType } = require('discord-api-types/v10');
 const isEqual = require('fast-deep-equal');
 const { ApplicationCommandPermissionsManager } = require('../managers/ApplicationCommandPermissionsManager.js');
 const { PermissionsBitField } = require('../util/PermissionsBitField.js');
@@ -445,7 +445,18 @@ class ApplicationCommand extends Base {
         command.descriptionLocalizations ?? command.description_localizations ?? {},
         this.descriptionLocalizations ?? {},
       ) ||
-      !isEqual(command.integrationTypes ?? command.integration_types ?? [], this.integrationTypes ?? []) ||
+      // [0] is the default value sent by Discord
+      !isEqual(
+        command.integrationTypes ??
+          command.integration_types ??
+          (this.client.application.integrationTypesConfig
+            ? Object.keys(this.client.application.integrationTypesConfig)
+            : [ApplicationIntegrationType.GuildInstall]),
+        this.integrationTypes ??
+          (this.client.application.integrationTypesConfig
+            ? Object.keys(this.client.application.integrationTypesConfig)
+            : [ApplicationIntegrationType.GuildInstall]),
+      ) ||
       !isEqual(command.contexts ?? [], this.contexts ?? []) ||
       ('handler' in command && command.handler !== this.handler)
     ) {