(Medium) - Evolvable APIs

SecondRequirementTraditionalWay.js

const response = await fetch('http://clinic.example.com/booking?intendedDoctor=jane', {
  method: 'get'
});

const availableTimeSlotsForTheWeek = await response.json();

await fetch('http://clinic.example.com/booking', {
  method: 'post',
  body: JSON.stringify({
    username: 'mary.doe',
    intendedDoctor: 'jane',
    time: chooseValidTimeFor('2018-05-01T10:20:00Z', availableTimeSlotsForTheWeek)
    booking: 'Consultation with Doctor Jane'
  }),
});