What is it

const mapPromise = (array) => {
  const promises = array.map(async (val) => {
    return {
      r_val: await service.getByValue(val)
    }
  });
  
  return Promise.all(promises);
}

continue and break

continue

Skip current round in looping and jump to the next round.

for (let i = 0; i < 10; i++) {
  if (i === 3) {
    continue;
  }

  console.log(i);
}

// 0,1,2,4,5,6,7,8,9
// skips 3

break

Terminates the loop (not just current iteration) when reached.

for (let i = 0; i < 10; i++) {
  if (i === 3) { 
    break;
  }

  console.log(i);
}

// 0,1,2
// stops iterating at 3