Add property to object when it's not null

Question

I\'m working on a small API and I want to update the data using HTTP PATCH REQUEST without using a bunch of if statements. I\'m trying to fill the outgoing data

Answer 1

Depending on the JS version you are using, you can use the spread operator ...

const getData = data => ({
  ...data.first  && { 'Custom First Prop Name': data.first },
  ...data.second && { 'Custom Second Prop Name': data.second },
  ...data.third  && { third: data.third },
  ...data.fourth && { fourth: data.fourth },
});