Improvement to export_google_music.js gist

songs_to_csv.js

// After running this guy's Google Play Music export https://gist.github.com/dcalacci/7f8853174797c0c56c49
// His export to CSV function doesn't format the lines properly
// Paste the following function in the console and run 'songsToCsv(all_songs)'
function songsToCsv(data) {
    const out = [];
    const seen = new Set();

    const keys = [
        'artist', 'album', 'title', 'duration', 'playcount', 'rating'
    ];
    const buildString = d => keys.map(k => `"${d[k].trim()}"`).join(',')
    for (const d of data) {
        const row = buildString(d); 
        if (!seen.has(row)) {
            out.push(row);
            seen.add(row);
        }
    }
    out.unshift(keys.join(','));
    copy(out.join('\n'));
    console.log(`Copied ${out.length} lines to the clipboard!`);
}