i18n: tech for ENB

[aristov]

We need to implement ENB techs as described in #576 and in branch issues/576@v3

[aristov]

cc @veged @narqo @dfilatov

[aristov]

@blond ping

[blond]

WIP — https://github.com/blond/enb-bem-core-i18n

[veged]

@blond do you have any time estimates?

[blond]

@veged one week

[narqo]

@blond is there anything to look at?

[aristov]

@narqo the ball is on my side: I promised to look and try enb-bem-core-i18n, but just start to do this. I'll be glad to receive any help if possible.

[blond]

@aristov, Now we are making these changes to the enb-bem-i18n package in 1.x branch.

[aristov]

I've created enb-bem-i18n-test branch with simple config and special i18n testing bundle. Everything works fine, but I'm not sure, that I build ?.{lang}.js files properly. @blond, could you check if I do things right, please?

[blond]

@aristov, it looks good.

Some comments:

Instead of ./techs/i18n-bemjson-to-html tech need use enb-bemxjst/techs/bemjson-to-html.

For merge client JavaScript files with i18n need use option lang: '{lang}':

nodeConfig.addTech([require('enb/techs/file-merge'), {
    lang: '{lang}',
    sources : ['?.pre.js', '?.i18n.{lang}.js'],
    target : '?.pre.{lang}.js' 
}]);

[aristov]

If everything is done, we can release the new package version to use it in #1108.