move diffs to other PRs

Author: nshahan

dwds/lib/src/services/expression_compiler_service.dart

@@ -78,6 +78,7 @@ class _Compiler {
       '--module-format',
       compilerOptions.moduleFormat.name,
       if (verbose) '--verbose',
+      '--sound-null-safety',
       for (final experiment in compilerOptions.experiments)
         '--enable-experiment=$experiment',
       if (compilerOptions.canaryFeatures) '--canary',

frontend_server_client/example/web_client.dart

@@ -27,6 +27,7 @@ void main(List<String> args) async {
       '--multi-root-scheme=org-dartlang-sdk',
       '--modules=amd',
       '--module-name=dart_sdk',
+      '--sound-null-safety',
       '-o',
       dartSdkJs,
       p.url.join(sdkDir, sdkKernelPath),

frontend_server_common/lib/src/frontend_server_client.dart

@@ -394,6 +394,7 @@ class ResidentCompiler {
       ],
       if (useDebuggerModuleNames) '--debugger-module-names',
       '--experimental-emit-debug-metadata',
+      '--sound-null-safety',
       for (final experiment in compilerOptions.experiments)
         '--enable-experiment=$experiment',
       if (compilerOptions.canaryFeatures) '--dartdevc-canary',