anchor.diff:        'pkg/dev_compiler/bin/dartdevc.dart', 'snapshots/dartdevc.dart.snapshot');
     _buildSdkScript = await resolve('pkg/dev_compiler/tool/build_sdk.dart');
     _patchSdkScript = await resolve('pkg/dev_compiler/tool/patch_sdk.dart');
  -  _sdkDevRuntime = await resolve('sdk/lib/_internal/js_dev_runtime');
  -}
  +  _sdkDevRuntime = await resolve(_nnbd
  +      ? 'sdk_nnbd'
  +      : 'sdk'
  +          '/lib/_internal/js_dev_runtime');
  +}
  
positive.code:             sdkRoot.toFilePath(),
              _sdkDevRuntime,
              'patched_sdk',
              if (nnbd) 'sdk_nnbd'
            ],
            root.toFilePath());
        _checkExitCode(result, this, module);
  
negative.code: String _test_package = 'ddc_modular_test';
  
  Uri sdkRoot = Platform.script.resolve("../../../");
  bool _nnbd = false;
  Options _options;
  String _dartdevcScript;
  String _buildSdkScript;
  