zip-stream exits abruptly without any error if content is large

[anandncode]

Description

When trying to add a string of considerable size such as >7 MB, the archive.entry exits abruptly without any exception and exit code - 0.

Below is sample code

const ZipStream = require('zip-stream');
const archive = new ZipStream(); 

function arrayToCsv(dataArray) {
    const output = dataArray.map((val) => {
        if (val === null || val === undefined) {
            return '';
        }
        const modVal = `${val}`; // Convert everything to string
        return `"${modVal.replace(/"/g, '""')}"`;
    }).join(separator);
    return output;
}

function getCSV(rows, cols = 10) {

    let csv = '';
    for (let i = 0; i < rows; i++) { // files

        const row = new Array(cols);
        row.fill(`randomString${i + 1}`);
        csv = csv + arrayToCsv(row) + '\n';
    }
    return csv;
}

process.on('exit', (code) => {
    console.log(`Process exit with code - ${code}`)
});

console.log(`Before adding csv`);
csv = getCSV(20000);

archive.entry(csv, { name: 'csv1.csv', zlib: { level: 9 } }, (err, entry) => {
    if (err) {
        throw err
    }
    console.log(`After adding csv`);
    archive.finish();
})

Output

Before adding csv
Process exit with code 0

The After adding csv is not printed to console.

I have used object-sizeof to calculate size of csv
size of csv - 7777880 OR 7.42 MB

For lower sizes, it works fine.

Please let me know if there is anything wrong with the code above.

[anandncode]

Btw the same thing works fine with archiver. Also calling zlib.deflate on csv string also works fine without any issue

[littlemaneuver]

tested your example, seems like it is due to the stream buffer overflow if you don't read the zip stream then it is silently killed

[anandncode]

Thanks @antoniopuero
Shouldn't it throw an error and call the callback? Also, 7.4 MB shouldn't be a big size as most of the zip scenarios deal with large file sizes.

[benjaminben]

@anandncode were you ever able to resolve this? Seeing the same issue with a much smaller total file size (< 1mb) but a large number of files

[anandncode]

@benjaminben I could vaguely remember that I changed the library to fflate and it worked better