// noprotect

// line above is for generators

// lodash/fp is `_`

​

function firstYieldParam() {

  console.log('firstYieldParam called');

  return 'What generator gives back to controller first yield';

}

​

​

function* generator(param) {

  console.log('before the line with yield in the generator, param = ', param);

  const whatControllerGaveTheGenerator = yield firstYieldParam();

  const paramToSecondYield = `whatControllerGaveTheGenerator is ${whatControllerGaveTheGenerator}`;

  const whatControllerGaveTheGenerator2 = yield paramToSecondYield;

  console.log(`whatControllerGaveTheGenerator2 is ${whatControllerGaveTheGenerator2}`);

  return 'this is the return value from the generator';

}

​

function controller() {

  console.log(`Running the controller(), about to call generator()`);

  const iterator = generator({a: 1});

  //console.log(iterator);

  console.log(`About to call iterator.next`); // ('param for first time next is called ==> unused')`);

  const firstResult = iterator.next(); // 'param for first time next is called ==> unused.');

  console.log(`firstResult from iterator.next()`, firstResult); 

  const secondResult = iterator.next('param for second time next is called.');

  console.log(`secondResult from iterator.next()`, secondResult);

  const thirdResult = iterator.next('param for third time next is called.');

  console.log(`thirdResult from iterator.next()`, thirdResult);

}

​

​

controller();