# hot [](https://pub.dartlang.org/packages/angel_hot)  Supports *hot reloading* of Angel servers on file changes. This is faster and more reliable than merely reactively restarting a `Process`. This package only works with the [Angel framework](https://github.com/angel-dart/angel). # Installation In your `pubspec.yaml`: ```yaml dependencies: angel_framework: ^2.0.0-alpha angel_hot: ^2.0.0 ``` # Usage This package is dependent on the Dart VM service, so you *must* run Dart with the `--observe` (or `--enable-vm-service`) argument!!! Usage is fairly simple. Pass a function that creates an `Angel` server, along with a collection of paths to watch, to the `HotReloader` constructor. The rest is history!!! The recommended pattern is to only use hot-reloading in your application entry point. Create your `Angel` instance within a separate function, conventionally named `createServer`. **Using this in production mode is not recommended, unless you are specifically intending for a "hot code push" in production..** You can watch: * Files * Directories * Globs * URI's * `package:` URI's ```dart import 'dart:async'; import 'dart:convert'; import 'dart:io'; import 'package:angel_framework/angel_framework.dart'; import 'package:angel_hot/angel_hot.dart'; import 'package:logging/logging.dart'; import 'src/foo.dart'; main() async { var hot = new HotReloader(createServer, [ new Directory('src'), new Directory('src'), 'main.dart', Uri.parse('package:angel_hot/angel_hot.dart') ]); await hot.startServer('127.0.0.1', 3000); } Future<Angel> createServer() async { var app = new Angel()..serializer = json.encode; // Edit this line, and then refresh the page in your browser! app.get('/', (req, res) => {'hello': 'hot world!'}); app.get('/foo', (req, res) => new Foo(bar: 'baz')); app.fallback((req, res) => throw new AngelHttpException.notFound()); app.encoders.addAll({ 'gzip': gzip.encoder, 'deflate': zlib.encoder, }); app.logger = new Logger('angel') ..onRecord.listen((rec) { print(rec); if (rec.error != null) { print(rec.error); print(rec.stackTrace); } }); return app; } ```