error catching for cfg

index.js

@@ -3,7 +3,7 @@ import * as lights from './lights.js';
 
 const cfg = require('./config.json');
 
-global.cfg = cfg;
+global.cfg = cfg || {};
 
 server.recv(
   (res) => {

lights.js

@@ -1,5 +1,10 @@
 import * as ws281x from 'rpi-ws281x'
 
+if (!global.cfg) {
+  const cfg = require('./config.json');
+
+  global.cfg = cfg || {};
+}
 const fade_ticks = global.cfg.fade_ticks || 10;
 var pixels = new Uint32Array(global.cfg.leds);
 var pixel_cache = new Uint32Array(global.cfg.leds);