Add a note about this type inference

[ktsn]

Although the recommended configuration has strict: true, I saw some people does not include it in their config and confused why this type is not inferred.

I guess the beginners of TypeScript may not understand what is stricter inference for data properties on this. So I added a more description about that.

[HerringtonDarkholme]

Thanks!

[galenyuan]

What about add a mention that export default Vue.extend({ ..ComponentOption }) is required?
I tried like this

but complier throw errors

[ktsn]

@galenyuan It's already in docs...

To let TypeScript properly infer types inside Vue component options, you need to define components with Vue.component or Vue.extend:

[galenyuan]

@ktsn but there is

Note that when using Vetur with SFCs, type inference will be automatically applied to the default export, so there’s no need to wrap it in Vue.extend:

in next paragraph, it's confused..

[HerringtonDarkholme]

We have already removed that paragraph. Please patiently wait for deployment.

[ktsn]

FYI #1226

[galenyuan]

Aha, thanks guys~