tree shaking do not support Code Splitting vendor?

[rambo-panda]

❔ Question

tree shaking looks like it doesn't support vendor ?

💻 Code Sample

vendor.js // this is my common vendor.js

import ('vue');

app.js

import './deps/vendor.js';

import Vue from 'vue';
// do something by Vue

index.html

...
<script src="./app.js"></script>
...

• npx parcel build --experimental-scope-hoisting index.html

 // built code
    a([["vue.runtime.esm.d7f83dcc.js", "QPfz"], "QPfz"]);
    require("QPfz"),
    console.log(require("QPfz").default);

// chrome dev tools throw error
Uncaught Error: Cannot find module 'QPfz'

but it's normal if l remove import './deps/vendor.js';;

I know that I should use it like this.

import ('vue').then(() => {
    // do something
});

but it's normal when parcel build no --experimental-scope-hoisting

🌍 Your Environment

Software	Version(s)
Parcel	1.10.3
Node	10.
npm/Yarn	6.4.1
Operating System	mac

[rambo-panda]

the issues repeats with 2300