import 'class' constructor, console ok, but new class is not defined

[Yueyun]

I'm using babel-plugin-component
here's my import
import {CanvasPoster} from 'ui-lib'
but when I using this: new CanvasPoster()
it says

myPoster.vue?7d2b:33 Uncaught (in promise) ReferenceError: CanvasPoster is not defined

but i can console.log(CanvasPoster)

function CanvasPoster() {
__WEBPACK_IMPORTED_MODULE_3_babel_runtime_helpers_classCallCheck___default()(this, CanvasPoster);

i can fix this problem to change

import CanvasPoster from 'ui-lib/lib/CanvasPoster',

does anyone know why this happen?

[luchg]

我也遇到了一模一样的问题！