Implements custom recursive watch for linux (#39)

* Implements custom recursive watch for linux

* Only use custom watch on linux

servor.js

@@ -7,6 +7,16 @@ const os = require('os');
 const net = require('net');
 const cwd = process.cwd();
 
+const watch =
+  process.platform === 'linux'
+    ? (path, cb) => {
+        if (fs.statSync(path).isDirectory()) {
+          fs.watch(path, cb);
+          fs.readdirSync(path).forEach(entry => watch(`${path}/${entry}`, cb));
+        }
+      }
+    : (path, cb) => fs.watch(path, { recursive: true }, cb);
+
 const fport = (p = 0) =>
   new Promise((resolve, reject) => {
     const s = net.createServer();
@@ -122,7 +132,7 @@ module.exports = async ({
   // Notify livereload clients on file change
 
   reload &&
-    fs.watch(root, { recursive: true }, () => {
+    watch(root, () => {
       while (clients.length > 0)
         sendMessage(clients.pop(), 'message', 'reload');
     });