github mdn/browser-compat-data v4.0.9

latest releases: v5.3.8, v5.3.7, v5.3.6...
2 years ago

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Notable changes

  • api.MessageEvent.origin.USVString_type was removed, since it recorded data about browser internals that are not observable to web developers. (#13136)

  • was renamed to to reflect the convention set by (#13216)

  • and were renamed to and to reflect the actual names of the values they describe. (#11924)

  • api.Response.Response.body_param_null was renamed to api.Response.Response.body_parameter_optional to follow the guideline on parameter feature names.

  • The following non-existent, long-removed, or otherwise irrelevant features have been removed:

    • api.EventTarget.removeEventListener.type_listener_parameters_optional (#13143)
    • api.HTMLImageElement.error_event (#13006)
    • api.MutationObserverInit (#12795)

Known issues

  • In v3.3.9, the structure of features for, place-items, and place-self changed (#11214). This is an incomplete fix to the problem of undocumented namespaces appearing in places where you might otherwise expect compatability data. The restructuring of the data is a work in progress and may change again in a future release. See #6175 for more information.


  • 11 contributors have changed 89 files with 1,314 additions and 1,880 deletions in 142 commits (v4.0.8...v4.0.9)
  • 13,378 total features
  • 819 total contributors
  • 3,642 total stargazers

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