'use strict';
const os = require('os');

const nameMap = new Map([
	[19, 'Catalina'],
	[18, 'Mojave'],
	[17, 'High Sierra'],
	[16, 'Sierra'],
	[15, 'El Capitan'],
	[14, 'Yosemite'],
	[13, 'Mavericks'],
	[12, 'Mountain Lion'],
	[11, 'Lion'],
	[10, 'Snow Leopard'],
	[9, 'Leopard'],
	[8, 'Tiger'],
	[7, 'Panther'],
	[6, 'Jaguar'],
	[5, 'Puma']
]);

const macosRelease = release => {
	release = Number((release || os.release()).split('.')[0]);
	return {
		name: nameMap.get(release),
		version: '10.' + (release - 4)
	};
};

module.exports = macosRelease;
// TODO: remove this in the next major version
module.exports.default = macosRelease;