Enable consts from environment in DDK for flutter_web (#10069)

nshahan · web-flow · commit e8fb641f6166 · 2019-07-23T16:05:36.000-07:00
Fixes: dart-lang/sdk#37605 We were seeing unevaluated constants during the build for flutter_web. Passing an empty map is handled differently than null so the constant evaluation will kick in.
diff --git a/web_sdk/flutter_kernel_sdk.dart b/web_sdk/flutter_kernel_sdk.dart
@@ -63,7 +63,8 @@ Future main(List<String> args) async {
     ..packagesFileUri = Uri.base.resolveUri(Uri.file(packagesPath))
     ..librariesSpecificationUri = Uri.base.resolveUri(Uri.file(librarySpecPath))
     ..target = target
-    ..onDiagnostic = onDiagnostic;
+    ..onDiagnostic = onDiagnostic
+    ..environmentDefines = {};
 
   var inputs = target.extraRequiredLibraries.map(Uri.parse).toList();
   var component = await kernelForComponent(inputs, options);
