在WePY框架下使用wxDraw报错 about wxdraw HOT 2 CLOSED

import wepy from 'wepy'
import { wxDraw as WxDraw, Shape } from '../plugins/wxdraw'

export default class Index extends wepy.page {
    wxCanvas =  null

    onLoad() {
        const context = wx.createCanvasContext('effectCanvas')
        this.wxCanvas = new WxDraw(context, 0, 0, 400, 500)
    }
}