In principle, you could serve different files to different browsers:

– Browser supports ES6 => serve an ES6 .js file
– Otherwise => compile ES6 to ES5 (or ES3)

What is the best way to do this?

– Browsers tell servers their level of ECMAScript support?
– You can do a feature detection in JS and then load modules conditionally? But that seems like a more complicated solution. I’m not even sure how I would implement the detection part.

-- 
Dr. Axel Rauschmayer
axel at rauschma.de

home: rauschma.de
twitter: twitter.com/rauschma
blog: 2ality.com

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In principle, you could serve different files to different browsers:

* Browser supports ES6 => serve an ES6 .js file
* Otherwise => compile ES6 to ES5 (or ES3)

What is the best way to do this?

* Browsers tell servers their level of ECMAScript support?
* You can do a feature detection in JS and then load modules conditionally? But that seems like a more complicated solution. I’m not even sure how I would implement the detection part.