x0.20 error?

Has anyone seen this error before: JavaScript error in syncano-js/dist/syncano.fuse line 17933. Unexpected keyword 'const'. Const declarations are not supported in strict mode. in Fuse.Scripting.ScriptModule.RequireContext ?

//line 17933
  const opts = Object.assign({
    context: {},
    multiArgs: false
  }, options);

Code/app works fine in local previeuw but not on my iphone

Fuse only support ES 5.1. const is part of the ES 6 standard. You could try to run the library through a transpiler like Babel.