On Tue, Dec 17, 2013 at 11:02 PM, Shijun He <hax.sfo at gmail.com> wrote:

>
>
>
> On Wed, Dec 18, 2013 at 11:28 AM, Alex Kocharin <alex at kocharin.ru> wrote:
>
>>
>>
>> How can you migrate to ES6 if you didn't even migrate to ES5 first?
>>
>>
>
> Even IE5 (pre-ES3) can use string.prototype.repeat with simple shim.
>
> And with es6 shim, Map/Set SHOULD works on IE5, and all modules depend on
> Map/Set (but not depend on complex features such as Proxy) also works.
>

I doubt it.
https://github.com/paulmillr/es6-shim/blob/master/es6-shim.js#L30-L34


>
>
> So that's what I mean migration step by step. Some of your codes migrate
> to ES6 API, but keep working on legacy browsers. It's very important for
> real products. Or migration is totally impossible until 2023 if all pre-ES6
> browsers disappear it that time.
>

I estimate the new version of ECMAScript will be either 9 or 10 in 2023 ;)

Rick
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On Tue, Dec 17, 2013 at 11:02 PM, Shijun He <hax.sfo at gmail.com> wrote:

> Even IE5 (pre-ES3) can use string.prototype.repeat with simple shim.
>
> And with es6 shim, Map/Set SHOULD works on IE5, and all modules depend on
> Map/Set (but not depend on complex features such as Proxy) also works.

I doubt it.
https://github.com/paulmillr/es6-shim/blob/master/es6-shim.js#L30-L34


> So that's what I mean migration step by step. Some of your codes migrate
> to ES6 API, but keep working on legacy browsers. It's very important for
> real products. Or migration is totally impossible until 2023 if all pre-ES6
> browsers disappear it that time.

I estimate the new version of ECMAScript will be either 9 or 10 in 2023 ;)