core-js: "Attempting to configurable attribute of unconfigurable property."

Asked Feb 08 '17 at 18:37

Active Feb 08 '17 at 18:37

Viewed 839 times

https://github.com/zloirock/core-js/issues/279

I'm using babel-polyfill, which I believe uses core-js. I'm seeing this error reported in some browsers (Safari <=7, Chrome 47, Nintendo Browser, Playstation Vita Browser): "Attempting to configurable attribute of unconfigurable property." I used this site to translate the line & col number: https://raygun.com/sourcemaps It says the error is happening in core-js/modules/es6.math.acosh.js?7396

I removed the Math polyfills since I didn't need them, but I still see the error in core-js/modules/_object-to-array.js?7d99 on line 4.

What's causing this error and how do I make it go away?

asked Feb 08 '17 at 18:37

Seán Hayes

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Can you include the full error and stack trace? – loganfsmyth Feb 08 '17 at 19:40
No, it was reported through the `window.onerror` handler to Google Analytics. But I know it's happening inside this polyfill. I'll update my `window.onerror` to include the trace. – Seán Hayes Feb 08 '17 at 22:49
Turns out I was already including the trace, but it's just not available on the browsers this is a problem in. – Seán Hayes Feb 27 '17 at 23:20
Any solution for this? – Patrick Jul 26 '17 at 14:56

core-js: "Attempting to configurable attribute of unconfigurable property."

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