How to zip a single file with Archiver - node.js

Question

I am trying to zip a single file using the Archiver npm package located: https://www.npmjs.com/package/archiver
I have been able to use the following to zip a directory:
archive.directory(folderName, false);
But when I try to use either of these nothing seems to happen (ie: no zip is generated, file never finishes zipping):
archive.file(folderName, { name: 'file4.txt' });
archive.file(fs.createReadStream(path.resolve(file)), {name: 'File' + singleFileCheck});
Has anyone run into this issue before? Please let me know what I am doing wrong. Thank you in advance!
edit:
module.exports = async function zipper(user, pass, orgid, s4url, apiToken, newOrgName, file) {
const s4 = require('../testcli/s4');
const fs = require('fs');
const archiver = require('archiver');
const path = require('path');
var parentDirect;
if(file == "./"){
parentDirect = "..";
}else{
parentDirect = path.basename(path.dirname(file));
}
const newZipFile = parentDirect + '/s4.zip';
var folderName = file;
//Checks for existence of infinite loop
if(path.resolve(parentDirect).length > path.resolve(folderName).length){
console.log(folderName.search(parentDirect));
console.error('\x1b[36m%s\x1b[0m', 'ERROR!!!! : Please adjust where your console is pointed, this will result in an infinite loop. Exiting.');
return;
}
var P = ['\\', '|', '/', '-'];
var x = 0;
var output = fs.createWriteStream(newZipFile);
var archive = archiver('zip');
scansdisplayinterval = setInterval(function () {
twrl();
}, 250);
// listen for all archive data to be written
output.on('close', function () {
console.log('\x1b[36m%s\x1b[0m', archive.pointer() + ' total bytes');
console.log('\x1b[36m%s\x1b[0m', 'archiver has been finalized and the output file descriptor has closed.');
try {
process.stdout.write(newZipFile);
clearInterval(scansdisplayinterval);
s4(user, pass, newZipFile, orgid, s4url, apiToken, newOrgName);
} catch (e) {
console.log(e);
}
});
// good practice to catch this error explicitly
archive.on('error', function (err) {
throw err;
});
// good practice to catch warnings (ie stat failures and other non-blocking errors)
archive.on('warning', function(err) {
throw err;
});
// This event is fired when the data source is drained no matter what was the data source.
output.on('end', function() {
console.log('\x1b[36m%s\x1b[0m', 'Data has been drained');
});
// pipe archive data to the file
archive.pipe(output);
//Checks -f for file extension
let singleFileCheck = path.extname(file);
//If file has extension
if(singleFileCheck.length <= 4 && singleFileCheck != ''){
//Append single file
console.log('singleFile', path.resolve(file));
archive.file(path.resolve(file), { name: 'file4.txt' });
// archive.append(fs.createReadStream(path.resolve(file)), {name: 'File' + singleFileCheck});
//Else = folder
}else{
// append files from a sub-directory, putting its contents at the root of archive
archive.directory(folderName, false);
}
// archive.directory(folderName, false);
console.log('\x1b[36m%s\x1b[0m', "Zipping: " + folderName + " To: " + newZipFile);
console.log('\x1b[36m%s\x1b[0m', "Zipping To: " + path.resolve(newZipFile));
archive.finalize();
function twrl() {
process.stdout.write('\rZipping Folder ... ' + P[x++]);
x &= 3;
}
return(newZipFile);
};

Answer 1

The issue came from how I was defining the parentDirect var.
Solution:
let singleFileCheck = path.extname(file);
if(file == "./" || singleFileCheck.length <= 4 && singleFileCheck != ''){
parentDirect = "..";
}else{
parentDirect = path.basename(path.dirname(file));
}