oneOf

commands/games/math-quiz.js

@@ -25,10 +25,7 @@ module.exports = class MathQuizCommand extends Command {
 					key: 'difficulty',
 					prompt: `What should the difficulty of the game be? Either ${list(difficulties, 'or')}.`,
 					type: 'string',
-					validate: difficulty => {
-						if (difficulties.includes(difficulty.toLowerCase())) return true;
-						return `Invalid difficulty, please enter either ${list(difficulties, 'or')}.`;
-					},
+					oneOf: difficulties,
 					parse: difficulty => difficulty.toLowerCase()
 				}
 			]

commands/games/quiz.js

@@ -24,10 +24,7 @@ module.exports = class QuizCommand extends Command {
 					prompt: `Which type of question would you like to have? Either ${list(types, 'or')}.`,
 					type: 'string',
 					default: 'multiple',
-					validate: type => {
-						if (types.includes(type.toLowerCase())) return true;
-						return `Invalid type, please enter either ${list(types, 'or')}.`;
-					},
+					oneOf: types,
 					parse: type => type.toLowerCase()
 				},
 				{
@@ -35,10 +32,7 @@ module.exports = class QuizCommand extends Command {
 					prompt: `What should the difficulty of the game be? Either ${list(difficulties, 'or')}.`,
 					type: 'string',
 					default: '',
-					validate: difficulty => {
-						if (difficulties.includes(difficulty.toLowerCase())) return true;
-						return `Invalid difficulty, please enter either ${list(difficulties, 'or')}.`;
-					},
+					oneOf: difficulties,
 					parse: difficulty => difficulty.toLowerCase()
 				}
 			]

commands/games/typing-test.js

@@ -25,10 +25,7 @@ module.exports = class TypingTestCommand extends Command {
 					key: 'difficulty',
 					prompt: `What should the difficulty of the game be? Either ${list(difficulties, 'or')}.`,
 					type: 'string',
-					validate: difficulty => {
-						if (difficulties.includes(difficulty.toLowerCase())) return true;
-						return `Invalid difficulty, please enter either ${list(difficulties, 'or')}.`;
-					},
+					oneOf: difficulties,
 					parse: difficulty => difficulty.toLowerCase()
 				}
 			]