🐛 Handle config without pluginOptions defined

Author: iamphi

index.js

@@ -1,6 +1,7 @@
 var proxy = require('http-proxy-middleware');
 
 module.exports = (api, options) => {
+	if (options.pluginOptions === undefined) return;
 	const opts = options.pluginOptions.proxy;
 
 	if (opts && (opts.enabled === undefined || opts.enabled)) {