Node version check

index.js

@@ -1,5 +1,6 @@
 #!/usr/bin/env node
 
+const compareVersions = require('compare-versions');
 const path = require('path');
 const process = require('process');
 
@@ -8,6 +9,13 @@ const parser = require('./src/parser');
 const writer = require('./src/writer');
 
 (async () => {
+	// Node version check
+	const requiredVersion = '12.14.0';
+	const currentVersion = process.versions.node;
+	if (compareVersions(currentVersion, requiredVersion) === -1) {
+		throw `This script requires Node v${requiredVersion} or higher, but you are using v${currentVersion}.`;
+	}
+
 	// parse any command line arguments and run wizard
 	const config = await wizard.getConfig(process.argv);