Check window.MediaSource before call constructor

MediaSource is an experimental technology. Not compatible with iOS Safary, even with current last iOS version (v12 April 2019).

This JS  function (polyfill) crashes web compiled Dart load on iOS.

Closes #36683
https://github.com/dart-lang/sdk/pull/36683

GitOrigin-RevId: c18de2cc60e0c06c566e3f2f552d6543a45011fa
Change-Id: Ic36d2cb257ecccf1b94b026f40a949a74409c371
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/99980
Reviewed-by: Vijay Menon <vsm@google.com>
Commit-Queue: Vijay Menon <vsm@google.com>
1 file changed
tree: d874b2a6f4f7bdc9854dea4bf7652632344a93b1
  1. .github/
  2. build/
  3. client/
  4. docs/
  5. pkg/
  6. runtime/
  7. samples/
  8. samples-dev/
  9. sdk/
  10. tests/
  11. third_party/
  12. tools/
  13. utils/
  14. .clang-format
  15. .gitattributes
  16. .gitconfig
  17. .gitignore
  18. .gn
  19. .mailmap
  20. .packages
  21. .vpython
  22. AUTHORS
  23. BUILD.gn
  24. CHANGELOG.md
  25. codereview.settings
  26. CONTRIBUTING.md
  27. DEPS
  28. LICENSE
  29. PATENTS
  30. PRESUBMIT.py
  31. README.dart-sdk
  32. README.md
  33. WATCHLISTS
README.md

Dart

Dart is an open-source, scalable programming language, with robust libraries and runtimes, for building web, server, and mobile apps.

Using Dart

Visit the dartlang.org to learn more about the language, tools, getting started, and more.

Browse pub.dartlang.org for more packages and libraries contributed by the community and the Dart team.

Building Dart

If you want to build Dart yourself, here is a guide to getting the source, preparing your machine to build the SDK, and building.

There are more documents on our wiki.

Contributing to Dart

The easiest way to contribute to Dart is to file issues.

You can also contribute patches, as described in Contributing.

License & patents

See LICENSE and PATENTS.