Fix ESP_PROD breaking everything

js/demo.js

@@ -865,7 +865,7 @@ class DemoShell {
   }
 }
 
-window.demoInterface = {
+window.demoInterface = module.exports = {
   input (data) {
     let type = data[0]
     let content = data.substr(1)

js/index.js

@@ -2,6 +2,6 @@ require('./lib/polyfills')
 require('./modal')
 require('./notif')
 require('./appcommon')
-require('./demo')
+try { require('./demo') } catch (err) {}
 require('./wifi')
 window.termInit = require('./term')

js/term_conn.js

@@ -1,6 +1,7 @@
 const EventEmitter = require('events')
 const $ = require('./lib/chibi')
-const demo = require('./demo')
+let demo
+try { demo = require('./demo') } catch (err) {}
 
 /** Handle connections */
 module.exports = class TermConnection extends EventEmitter {