[Feature request] Provide both cjs and esm syntax for `@vuepress/client` about core HOT 4 CLOSED

The client package should not be imported in node side.

1. If you want to simplify the usage in client, you can provide a client side entry, and set alias in your plugin.

2. Use resolveLocalePath from the shared package to resolve the locale. In fact, there is no site data in node side. It's just a coincidence that the SiteData interface is compatible with AppOptions.

3. Same as above. PageFrontmatter is available in shared

from core.

2. Use resolveLocalePath from the shared package to resolve the locale. In fact, there is no site data in node side. It's just a coincidence that the SiteData interface is compatible with AppOptions.

Nope, resovleLocalePath is definitly not what I want to. As I said in #47, I am accessing page lang in extendsPage data to provide i18n lang. A people who is not speaking english will more likely to use / as his mother language. It's unhelpful if a page has a routeLocale with /, we still cannot provide a i18n related data with it. We want the lang actually.

So I think at least a function should be provided to let peple get a page's lang or something.

from core.

That's another thing. This issue is asking for cjs build of client package.

from core.

Just made siteData available on vuepress app 05b87dd

from core.