chore(Client): robust error checking

packages/discord.js/src/client/Client.js

@@ -420,6 +420,9 @@ class Client extends BaseClient {
     if (!scopes.some(scope => [OAuth2Scopes.Bot, OAuth2Scopes.ApplicationsCommands].includes(scope))) {
       throw new DiscordjsTypeError(ErrorCodes.InvalidMissingScopes);
     }
+    if (scopes.some(scope => ![OAuth2Scopes.Bot].includes(scope)) && options.permissions) {
+      throw new DiscordjsTypeError(ErrorCodes.InvalidScopeWithPermissions);
+    }
     const validScopes = Object.values(OAuth2Scopes);
     const invalidScope = scopes.find(scope => !validScopes.includes(scope));
     if (invalidScope) {
@@ -512,6 +515,21 @@ class Client extends BaseClient {
     if (typeof options.failIfNotExists !== 'boolean') {
       throw new DiscordjsTypeError(ErrorCodes.ClientInvalidOption, 'failIfNotExists', 'a boolean');
     }
+    if (options.allowedMentions && typeof options.allowedMentions !== 'object') {
+      throw new DiscordjsTypeError(ErrorCodes.ClientInvalidOption, 'allowedMentions', 'an object');
+    }
+    if (typeof options.presence !== 'object') {
+      throw new DiscordjsTypeError(ErrorCodes.ClientInvalidOption, 'presence', 'an object');
+    }
+    if (typeof options.ws !== 'object') {
+      throw new DiscordjsTypeError(ErrorCodes.ClientInvalidOption, 'ws', 'an object');
+    }
+    if (typeof options.rest !== 'object') {
+      throw new DiscordjsTypeError(ErrorCodes.ClientInvalidOption, 'rest', 'an object');
+    }
+    if (typeof options.jsonTransformer !== 'function') {
+      throw new DiscordjsTypeError(ErrorCodes.ClientInvalidOption, 'jsonTransformer', 'a function');
+    }
   }
 }
 

packages/discord.js/src/errors/ErrorCodes.js

@@ -142,6 +142,7 @@
  * @property {'ModalSubmitInteractionFieldType'} ModalSubmitInteractionFieldType
 
  * @property {'InvalidMissingScopes'} InvalidMissingScopes
+ * @property {'InvalidScopesWithPermissions'} InvalidScopesWithPermissions
 
  * @property {'NotImplemented'} NotImplemented
 
@@ -289,6 +290,7 @@ const keys = [
   'ModalSubmitInteractionFieldType',
 
   'InvalidMissingScopes',
+  'InvalidScopesWithPermissions',
 
   'NotImplemented',
 

packages/discord.js/src/errors/Messages.js

@@ -155,6 +155,7 @@ const Messages = {
     `Field with custom id "${customId}" is of type: ${type}; expected ${expected}.`,
 
   [DjsErrorCodes.InvalidMissingScopes]: 'At least one valid scope must be provided for the invite',
+  [DjsErrorCodes.InvalidScopesWithPermissions]: 'Permissions cannot be set without the bot scope',
 
   [DjsErrorCodes.NotImplemented]: (what, name) => `Method ${what} not implemented on ${name}.`,