v3.9.0+ breaks on node v0.12

[ljharb]

require('core-js') breaks in node v0.12 with:

TypeError: Cannot convert a Symbol value to a string
    at String (native)
    at Object.<anonymous> ($PWD/node_modules/core-js/modules/es.symbol.description.js:34:23)

This works fine in v3.8.3, and breaks in v3.9.0. Looking at v3.8.3...v3.9.0, but nothing jumps out.

[zloirock]

Interesting, thanks, I'll check it tomorrow.

[zloirock]

Are you sure that it's introduced not in 3.9.1? It could be caused by 2394dac .

[ljharb]

I’m not certain; i installed a lot of versions to try to isolate it. That commit does seem the likely cause.

[zloirock]

Thanks, seems at the time of this PR I forgot about old V8 versions shema. I'll publish it after testing.

[zloirock]

Fixed in 3.12.0.