I recently started working with JS Promises. What I always like to do, is create function, which returns a Promise with the final desired result, but I only do 1 operation/then. Consider something like this (this fetches the versions of an npm package in an array in reverse order):function packageVersions(name) {  return fetchJson(npmUrls.getPackageUrl(name))    .then(npmPackage => npmPackage.versions)    .then(versionsObject => Object.keys(versionsObject))    .then(versions => versions.sort((a, b) => b.localeCompare(a)));}Like if I was doing a lots of .maps sequentially.My question would be: is this considered a good practice in general? Could this have significant perfomance drawbacks, if I do a lots of chaining? Do you consider this unreadable in any way?Would this be better?function packageVersions(name) {  return fetchJson(npmUrls.getPackageUrl(name))    .then(npmPackage => {        const versions = Object.keys(npmPackage.versions);        return versions.sort((a, b) => a.localeCompare(b));    });}
Javascript Promise chaining
javascript;promises