Script error: Browser exception message not providing information type and method

[beckylino]

No description provided.

[SergeyKanzhelev]

Do you have pictures/examples of what and when should be collected?

[KamilSzostak]

Most common undefined JS errors:

• Exception type: "Script error.", Failed method: "unknown" (Safari, Chrome, Firefox)
• Exception type: "Script error", Failed method: "window.onerror" (IE11, IE10, Edge)
• Exception type: "Script error.", Failed method: "window.onerror" (Safari, Edge, Chrome)
• Exception type: "Expected ';'", Failed method: "window.onerror" (IE 11)
• Exception type: "[object Event]", Failed method: "Unknown" (Android, Chrome)

[KamilSzostak]

Script error with an "unknown" error message is reported by CORS scripts, this can be mitigated by adding crossorigin="anonymous" to the script tag.

Edit: I fixed a bug to unify all "Script error" messages. The SDK also will provide more info on how to fix this #424.

[KamilSzostak]

[object Event] is logged when an Event is thrown and the SDK cannot serialize it.

See our Wiki page for more info: I'm seeing a lot of Uncaught [object Object] errors in Application Insights in Azure Portal

[spelltwister]

Is there a way to override this behavior? Maybe specify an unknownErrorFormatter = function(error) { return formattedErrorToLog; } or something? Or is there another work around that is available? Currently, every single error logged is useless for us as it just says [object Something] and has no details what-so-ever about the error.

[MSNev]

The label "waiting for backend fix" as added to the wrong issue -- doh!

[MSNev]

As part of adding additional support to handle more error types, including the throwing strings and some older browsers. I'm also adding the ExceptionType to the beginning of the message (if it is not already present).

As ErrorType: <existing message>

The exceptions to this will be if the ErrorType is

• It's ready present (anywhere - not just the beginning) within the message
• The Error type is either "String"; "Object" or "Error"

[MSNev]

v2.6.3 is now fully deployed

[github-actions]

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