Index: pkg/stub_core_library/README.md |
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+This package exists to create stubs for core libraries that can't be safely |
+imported on some platforms: `dart:io`, `dart:html`, and so on. These stubs are |
+included in the SDK and used by pub to support cross-platform packages. |
+ |
+This is an application package and is not intended to be uploaded to |
+pub.dartlang.org. |