Better error message for knockoutjs parser / evaluation error

[webloft]

Summary

If you have any error in your knockoutjs template you wont see the actual error given by the parser at loading the template, instead it just logs:

Failed to load the "module/components/whatever/path" template requested by "another module".

but the file can be loaded via network.

You need to intercept the Magento_Ui/js/lib/knockout/template/engine script at the point

consoleLogger.error('templateLoadingFail', {
   template: templateId,
   component: bindingContext.$data.name
});

and grab the first argument of the function to get the actual error.

You might still need the error in production mode, so it should be visible in the browsers console at any time.

Examples

Proposed solution

No response

Release note

No response

Triage and priority

• Severity: S0 - Affects critical data or functionality and leaves users without workaround.
• Severity: S1 - Affects critical data or functionality and forces users to employ a workaround.
• Severity: S2 - Affects non-critical data or functionality and forces users to employ a workaround.
• Severity: S3 - Affects non-critical data or functionality and does not force users to employ a workaround.
• Severity: S4 - Affects aesthetics, professional look and feel, “quality” or “usability”.

[m2-assistant]

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[m2-assistant]

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[engcom-November]

Hello @webloft,

Thank you for the report and collaboration!

Going through the issue this can be marked as a feature request.