feat: add core entry for node usage

[Dsaquel]

add new entries to import compileFile

resolve #304

edit: realised that we couldve import more utilities besides compileFile, thats why i created a new export entry core.ts. The name might be not appropriated though

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npm i https://pkg.pr.new/@vue/repl@310

commit: f1795f3

[wangcch]

🤔 I wonder if there will be duplicate content in vue-repl and core.
Maybe we need to support tree shaking

[Dsaquel]

Maybe we need to support tree shaking

Yes, you right we will have deduplicate imports in the bundled directory and that's normal i think.
At this part its the responsability of the developer to enable treeshake to only use what he use.
note: we handle treeshake because it is enabled by default, thanks to rollup.

[wangcch]

Maybe we need to support tree shaking

Yes, you right we will have deduplicate imports in the bundled directory and that's normal i think. At this part its the responsability of the developer to enable treeshake to only use what he use. note: we handle treeshake because it is enabled by default, thanks to rollup.

Rollup's treeshake option focuses on removing unused code within the current bundle.

I mean maybe we can split vue-repl.js . but that's a big change 🤔
like this

[wangcch]

LGTM