That's a great question! Yes doing that is absolutely possible, it's just one of those things that really comes down to a decision about whether the effort is worth the payoff.
Basically the process would be to have two separate babel configuration files, and generate separate builds, one aimed at modern browsers and one aimed at legacy browsers. Your target would decide the definition of what modern and legacy means to you.
You would then upload both bundles to your server and have custom code on the server side that decides which one to serve to the user based on the User-Agent header of their HTTP request:
So it's very do-able, just adds extra overhead so it's a matter of weighing the pros vs cons. In my experience personally, the extra ES5 overhead has never been enough to impact performance to the point where we've bothered to run two separate builds, but that's not to say the requirements might be different for another organization.
Cheers!
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That's a great question! Yes doing that is absolutely possible, it's just one of those things that really comes down to a decision about whether the effort is worth the payoff.
Basically the process would be to have two separate babel configuration files, and generate separate builds, one aimed at modern browsers and one aimed at legacy browsers. Your
targetwould decide the definition of what modern and legacy means to you.You would then upload both bundles to your server and have custom code on the server side that decides which one to serve to the user based on the User-Agent header of their HTTP request:
developer.mozilla.org/en-US/docs/W...
So it's very do-able, just adds extra overhead so it's a matter of weighing the pros vs cons. In my experience personally, the extra ES5 overhead has never been enough to impact performance to the point where we've bothered to run two separate builds, but that's not to say the requirements might be different for another organization.
Cheers!