Browser-compat-data: javascript.builtins.Object.assign - incorrect support stated for IE11

[essentin]

What information was incorrect, unhelpful, or incomplete?

Browser compatibility chart states that Object.assign is not supported by IE11

What did you expect to see?

Object.assign support at least for IE11

Did you test this? If so, how?

Tested on local IE11 and remote one via browserstack. Entered Object.assign({a:1},{b:2}) directly in the console and got a correct return value of {a:1,b:2}

MDN page report details

• Query: javascript.builtins.Object.assign
• MDN URL: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/assign
• Report started: 2020-12-15T13:28:43.170Z

[ddbeck]

Hi @essentin and thanks for opening this issue. I'd welcome a PR (from you or another contributor) correcting this data in Object.json. At that time, we might want to test to confirm that "11" is the correct "version_added" value, but that seems likely.

[joneskj55]

@ddbeck @essentin I can knock this out real quick if you would like. But if someone is already doing it please let me know.

[Elchi3]

The kangax table does show this as unsupported in IE11 too. I think it would be good to double-check first before changing this.

[ddbeck]

~OK, I just tested with IE10 in BrowserStack and it failed. So we're good to go with "11". 👍~

[Elchi3]

So we're good to go with "11". +1

Are you sure? We had this story before:
First https://github.com/mdn/browser-compat-data/pull/3965 and then https://github.com/mdn/browser-compat-data/pull/4029

Are we again tricked by polyfills here?

[ddbeck]

Ugh, yes, I goofed here. I misread @Elchi3's earlier comment as the kangax table showing that it was _supported_, so I tried it in IE 10 but not 11. I just tested in IE11 and it _also_ failed there. I rushed things—sorry about that.

I guess I'll close this since the data is correct. Though I wish we could we mark some data as "no, seriously". 😳

[Elchi3]

I reckon IE 11 not having Object.assign is one of the top pain points for web developers. So much that they want to change the compat table regularly :smile: