new toolkit and scoped registries

node_modules/windows-release/index.js

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+'use strict';
+const os = require('os');
+const execa = require('execa');
+
+// Reference: https://www.gaijin.at/en/lstwinver.php
+const names = new Map([
+	['10.0', '10'],
+	['6.3', '8.1'],
+	['6.2', '8'],
+	['6.1', '7'],
+	['6.0', 'Vista'],
+	['5.2', 'Server 2003'],
+	['5.1', 'XP'],
+	['5.0', '2000'],
+	['4.9', 'ME'],
+	['4.1', '98'],
+	['4.0', '95']
+]);
+
+const windowsRelease = release => {
+	const version = /\d+\.\d/.exec(release || os.release());
+
+	if (release && !version) {
+		throw new Error('`release` argument doesn\'t match `n.n`');
+	}
+
+	const ver = (version || [])[0];
+
+	// Server 2008, 2012 and 2016 versions are ambiguous with desktop versions and must be detected at runtime.
+	// If `release` is omitted or we're on a Windows system, and the version number is an ambiguous version
+	// then use `wmic` to get the OS caption: https://msdn.microsoft.com/en-us/library/aa394531(v=vs.85).aspx
+	// If the resulting caption contains the year 2008, 2012 or 2016, it is a server version, so return a server OS name.
+	if ((!release || release === os.release()) && ['6.1', '6.2', '6.3', '10.0'].includes(ver)) {
+		const stdout = execa.sync('wmic', ['os', 'get', 'Caption']).stdout || '';
+		const year = (stdout.match(/2008|2012|2016/) || [])[0];
+		if (year) {
+			return `Server ${year}`;
+		}
+	}
+
+	return names.get(ver);
+};
+
+module.exports = windowsRelease;