Added values validator type

lib/validator.js

@@ -95,6 +95,22 @@ function validate(body, fields, validation = {}) {
 				});
 				break;
 			}
+			case 'values': {
+				const valueChecks = Object.entries(checkOpts);
+				for (const [ key, allowed ] of valueChecks) {
+					const valueValid = allowed.includes(
+						fieldsMap.get(key));
+
+					if (!valueValid) {
+						valid = false;
+						break;
+					}
+
+					valid = true;
+				}
+
+				break;
+			}
 			default:
 				throw new Error('Invalid validation type');
 		}