fix(storefront): STRF-8607 Unified browsers list that we support

[jairo-bc]

What?

Cornerstone had webpack config that overrides babel for the browsers list support. That list was updated to target the browsers, that are in the documentation

Tickets / Documentation

https://support.bigcommerce.com/s/article/Themes-Supported-Browsers

Screenshots (if appropriate)

[BC-tymurbiedukhin]

Changes approved, but EOLs needed in .browserslistrc and babel.config.js

[junedkazi]

Is there a reason why we are dropping firefox ESR ?

[jairo-bc]

I've taken the list of supported browsers from the documentation: https://support.bigcommerce.com/s/article/Themes-Supported-Browsers. Firefox ESR stands for firefox 52

[junedkazi]

Changing this to >2% is a big change. We should check with @bookernath @bc-as before we make this change. Also we should stick with the last 2 versions.

[jairo-bc]

last 2 versions > will mean, that we will include IE 10 support and polyfills for it. The doc https://support.bigcommerce.com/s/article/Themes-Supported-Browsers also says, that we are targeting more then 2% browsers

[junedkazi]

Agreed and I just want a confirmation from product that the doc is right or if it needs updating

[bc-as]

Lets go with: >2%, last 1 version, Firefox ESR