Invalid flags supplied to RegExp constructor 'y'

[fernandogmar]

Hi Denis,

I expected that the RegExp polyfill would work with the sticky flag 'y'
var identifierRe = new RegExp('[a-zA-Z_][a-zA-Z0-9_-]*', 'y');

but in safari v9.1 it fails with error:
Invalid flags supplied to RegExp constructor

Am I doing something wrong? or doesn't this polyfill support the sticky flag at all?

Thanks in advance!

[zloirock]

Hi. The sticky flag support is not polyfilled in core-js. After this discussion I spent some time playing with the sticky flag but I didn't add it IIRC because of problems with some early implementations. At this moment, adding support for the sticky flag is not in my plans. Feel free to add a PR.