Explicitly validate slashes presence

example.js

@@ -10,9 +10,14 @@ console.log(validateValue("bar", [ isURL() ])); /*
 	 - At (root): Must be a valid URL
 */
 
-console.log(validateValue("https://example.com/", [ isURL([ "http", "https" ]) ])); // Url { ... }
+console.log(validateValue("https://example.com/", [ isURL([ "http://", "https://" ]) ])); // Url { ... }
 
-console.log(validateValue("ftp://example.com/", [ isURL([ "http", "https" ]) ])); /*
+console.log(validateValue("https:example.com/", [ isURL([ "http://", "https://" ]) ])); /*
 	AggregrateValidationError: One or more validation errors occurred:
-	 - At (root): Must be a URL with one of the following protocols: HTTP, HTTPS - but got FTP instead
+	 - At (root): Must be a URL with one of the following protocols: HTTP://, HTTPS:// - but got HTTPS: instead
+*/
+
+console.log(validateValue("ftp://example.com/", [ isURL([ "http://", "https://" ]) ])); /*
+	AggregrateValidationError: One or more validation errors occurred:
+	 - At (root): Must be a URL with one of the following protocols: HTTP://, HTTPS:// - but got FTP:// instead
 */

index.js

@@ -18,8 +18,12 @@ module.exports = function (protocols) {
 		function isURL(value) {
 			let parsed = url.parse(value);
 
+			let slashes = (parsed.slashes === true)
+				? "//"
+				: "";
+
 			let parsedProtocol = (parsed.protocol != null)
-				? parsed.protocol.replace(/:$/, "")
+				? parsed.protocol + slashes
 				: null;
 
 			if (parsedProtocol == null) {