test.js

import Fiber from 'fibers';

function sleep(ms) {
    var fiber = Fiber.current;
    setTimeout(function() {
        // fiber.run();
      // fiber.throwInto(new Error('throw!'));
      setTimeout(_ => {
        if(fiber.stopped){
          fiber.throwInto('throw!');
        }else{
          fiber.run();
        }
      });
    }, ms);
    Fiber.yield();
}


class Foo {
  bar(){
    console.log('baz');

  }

}


new Foo().bar();


var f = Fiber(_ =>{
  try {
    sleep(3000);
    console.log('first');
    sleep(2000);
    console.log('second');
  } catch(e){
    console.log('caught in', e);
  }


});

var f2 = Fiber(_ =>{
  try {
    sleep(3000);
    console.log('2 - first');
    sleep(2000);
    console.log('2 - second');
  } catch(e){
    console.log('caught in', e);
  }


});

setInterval(_ => { console.log('.'); }, 1000);
setTimeout(_ => {
  f.stopped = true;
  console.log('stopped');

}, 0);



f.run();
f2.run();

// f.reset();