get genre information from a medianfo json file

getGenre.js

const fs = require('fs');

const filename = process.argv[2];

    const mediacontents = JSON.parse(fs.readFileSync(filename, "utf8"));
		const index = {};
		const genres = {};
    mediacontents.forEach((file) => {
			try {
        const filename = file.media["@ref"];
        const meta = file.media.track.find((track) => track["@type"] === "General");
				const filedir = filename.replace(/\/[^\/]+$/,'');
				const genre = meta.Genre;
				if (!genres[genre]) {
					genres[genre] = {};
				}
				if (!genres[genre][filedir]) {
					genres[genre][filedir] = 0;
				}
				genres[genre][filedir] += 1;
				if (!index[filedir]) {
					index[filedir] = {};
				}
				if (!index[filedir][genre]) {
					index[filedir][genre] = 0;
				}
				index[filedir][genre] = index[filedir][genre] + 1;
			}
			catch(e) {
				console.log("Error", file, e);
			}
		});

const sortIt = (obj) => {
	Object.keys(obj).sort().forEach((key) => {
		console.log(key,obj[key]);
	});
}
	sortIt(index);
	sortIt(genres);