Play button starts running module.

Anyone knows why Buffer function is not working?

Simple code:
// main.js
var buf = Buffer.from('abc');
console.log(buf);

Returns on console:
TypeError: undefined not callable (property 'from' of [object Function])
at [anon] (duktape.c:65024) internal
at [anon] (root/porva2/main.js:2)
at require (init.js:131)
at [anon] (init.js:139) preventsyield
at runInit () native strict preventsyield
at handlePacket (pipe_communication.js:48)
at readCallback (pipe_communication.js:93) preventsyield