Use got to download and uncompress gz file (e.g. https://www.mydomain.com/sitemap.xml.gz)
const got = require('got')const url = ...let response = await got(url); // , decompress: truelet content = nullif (response.headers['content-type'].includes('x-gzip')) { const zlib = require('zlib'); /* const gzip = (input, options) => { const promise = new Promise(function(resolve, reject) { zlib.gzip(input, options, function (error, result) { if(!error) resolve(result); else reject(Error(error)); }); }); return promise; } */ const ungzip = (input, options) => { const promise = new Promise(function(resolve, reject) { zlib.gunzip(input, options, function (error, result) { if(!error) resolve(result); else reject(Error(error)); }); }); return promise; } const compressed = response.body const data = await ungzip(compressed); content = data.toString()}else { content = response.body}