vue-konva の transform がモバイルに対応していなかったので。。。
<template>
<div id="some-component">
</div>
</template>
<script>
import Konva from 'konva'
export default {
mounted() {
let stage = new Konva.Stage()
error: Konva is undefined
</script>
import {Konva} from 'konva'
error: Stage is undefined
------------------------solution-----------------------------------
import * as Konva from 'konva'
works correctly
referrence: