Issue with IE/Edge compatibility in 3.4.5

[simon-jouet]

Hi,

After spending quite some time debugging an issue in an angular app I've pinpointed it to a detection issue in 3.4.5 66f1385#diff-1db6478fc99b66a5dcda3ce77d9a794fR40

Okay, so the issue was that angular was crashing when calling getHtmlTagDefinition('a'), looking at the code it was returning 1 which clearly wasn't expected. That's because a is defined on the prototype of Object.

For the time being I reverted back to 3.4.4 and it's working fine.

This might be related to #720 ?

[j-verse]

Same issue here in IE11, my production code gives an error that I traced back to upgrading core-js from 3.4.4 to 3.4.5. In my (minified) React library it is giving an error because of this define of 'a' on the prototype of object in IE11.

[zloirock]

See #847 (comment)