How promises should be used.

demo.js

return getSomethingAsync()
    .then(processData)
    .then(doSomethingEvenMoreComplex)
    .then(butWithVeryExplicitNaming)
    .catch(handlingErrorWithStyle)


function getSomethingAsync() {
    return http.request() // basically initiate a promisified call
}

function processData(response) {
    // Taking the response.body for example as a initial stream of data
}

function doSomethingEvenMoreComplex(data) {
    // Split your responsability 
}

function butWithVeryExplicitNaming(piped_data) {
    // Keep you code clear and you function PURE
}

function handlingErrorWithStyle(error) {
    // Gracefuly handle your errors
}