fix(babel): ignore core-js sources

[Akryum]

See babel/babel#8731

[haoqunjiang]

The tests are failing.
Honestly I've never encountered such error before…

[Akryum]

I encountered it while transpiling (with transpileDependencies) a linked npm package when importing a raw .vue component from said npm package which has a prop with type: Number, which triggers the core-js NumberConstructor polyfill.

[Akryum]

The tests are failing.

Looks like it's not allowed inside presets 😿, maybe exclude would work...

[Akryum]

Or maybe we can just add it to the generated babel config?

[haoqunjiang]

Hmmmm…
I think the actual problem here is that linked modules does not work well with webpack exclude. We already excluded node_modules by default,

[Akryum]

We already excluded node_modules by default,

The issue arises when manually telling vue-cli to actually transpile the components package

[haoqunjiang]

oh then it makes sense to fix the exclude pattern