Update lib/config/parse-runtime.js

Co-Authored-By: lyrixx <[email protected]>

Author: Lyrkan

lib/config/parse-runtime.js

@@ -49,7 +49,7 @@ module.exports = function(argv, cwd) {
             runtimeConfig.useHotModuleReplacement = argv.hot || false;
             runtimeConfig.devServerKeepPublicPath = argv.keepPublicPath || false;
 
-            if (typeof argv.public !== 'undefined') {
+            if (typeof argv.public === 'string') {
                 if (argv.public.includes('://')) {
                     runtimeConfig.devServerUrl = argv.public;
                 } else if (runtimeConfig.devServerHttps) {