formatBytes.js

/**
 * Convert a file size given in bytes to human readable sizes.
 * Source: https://stackoverflow.com/a/18650828/1828637
 *
 * @param {number} bytes
 * @param {number} decimals - Should be >= 0, if less than 0 it is adjusted to 0.
 */
function formatBytes(bytes, decimals = 2) {
    if (bytes === 0) return '0 Bytes';

    const k = 1024;
    const dm = decimals < 0 ? 0 : decimals;
    const sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'];

    const i = Math.floor(Math.log(bytes) / Math.log(k));

    return parseFloat((bytes / Math.pow(k, i)).toFixed(dm)) + ' ' + sizes[i];
}

export {
    formatBytes
}