CSSGroupingRule not supported on Safari

[JohnPhamous]

Safari on desktop and mobile doesn't support CSSGroupingRule. This is causing errors when recording on Safari.

ReferenceError: Can't find variable: CSSGroupingRule

The error is happening on this line.

Not sure what the pattern for handling browser API support. The obvious fix is to check if CSSGroupingRule is defined before monkey patching the methods. This would silence the error but would cause the recording to be inaccurate.

Any suggestions @Yuyz0112 and @Juice10 ?

[Juice10]

Good catch John, it looks like we have to monkey patch everything that inherits from CCSGroupingRule individually: CSSMediaRule, CSSSupportsRule & CSSConditionRule.

[Yuyz0112]

@JohnPhamous Would you love to send a fixed patch in the meantime to avoid the runtime error?

[yukukotani]

PR submitted: #693