v.js

function* testG() {
  // await is translated as yield
  const data = yield getData()
  console.log('data: ', data);
  const data2 = yield getData()
  console.log('data2: ', data2);
  return 'success'
}
var gen = testG()
var dataPromise = gen.next()
dataPromise.then((value1) => {
    // Pass the obtained value of data1 to data2 through the next function
    var data2Promise = gen.next(value1)
    
    console.log('data: ', data);
    
    data2Promise.then((value2) => {
         gen.next(value2)
         
        console.log('data2: ', data2);
    })
})