Initial commit

node_modules/licia/isPortFree.js

@@ -0,0 +1,21 @@
+const net = require('net');
+
+exports = function(port, host) {
+    return new Promise(resolve => {
+        const server = net.createServer();
+
+        server.unref();
+        server.on('error', () => resolve(false));
+        const options = {
+            port
+        };
+        if (host) options.host = host;
+        server.listen(options, () => {
+            server.close(() => {
+                resolve(true);
+            });
+        });
+    });
+};
+
+module.exports = exports;