I've seen this promise code after a GET request: .then(resp => resp.body))

Question

 .then(resp => resp.body))

This code is written after a GET request in a large Node app. I'm thinking it means take the received response and return the response.body? Am I reading this correctly?

Answer 1

Yes, you are reading it correctly.

// Traditional Function
function (a){
  return a + 100;
}

// Arrow Function Break Down

// 1. Remove the word "function" and place arrow between the argument and opening body bracket
(a) => {
  return a + 100;
}

// 2. Remove the body braces and word "return" -- the return is implied.
(a) => a + 100;

// 3. Remove the argument parentheses
a => a + 100;

Answer 2

Just for improving the answer,

.then(resp => resp.body)) will be converted to

.then(function(resp){
    return resp.body;
})