Allow the latest shelf and args packages

Author: kevmoo

bin/inference/server.dart

@@ -5,6 +5,7 @@
 /// Server component to display inference results using a web app.
 library dart2js_info.bin.inference.server;
 
+import 'dart:async';
 import 'dart:io';
 
 import 'package:shelf/shelf.dart' as shelf;
@@ -15,7 +16,7 @@ String jsonDataFile;
 String indexFile;
 String scriptFile;
 
-main(args) async {
+main(List<String> args) async {
   var host = 'localhost';
   var port = 8080;
 
@@ -26,7 +27,7 @@ main(args) async {
   await shelf.serve(_handler, host, port);
 }
 
-_handler(shelf.Request request) async {
+Future<shelf.Response> _handler(shelf.Request request) async {
   var path = request.url.path;
   if (path == 'data') {
     return new shelf.Response.ok(await new File(jsonDataFile).readAsString());

pubspec.yaml

@@ -9,12 +9,12 @@ homepage: https://github.com/dart-lang/dart2js_info/
 environment:
   sdk: '>=1.21.1 <2.0.0'
 dependencies:
-  args: ^0.13.0
+  args: '>=0.13.0 <2.0.0'
   charcode: ^1.1.0
   collection: ^1.10.1
   path: ^1.3.6
   quiver: '>=0.21.0 <0.26.0'
-  shelf: ^0.6.1+2
+  shelf: '>=0.6.1+2 <0.8.0'
   shelf_static: ^0.2.4
   yaml: ^2.1.0
 dev_dependencies: