Why echarts are not showing on I.E-11 version - vuejs2

Question

I had created a project using vuejs+Vue-CLI and integrated echarts in it. Echarts are working well in all browsers but when I open it in IE-11 version, page can't load and it shows following error:
[object Error]{description: "Expected ')'", message: "Expected ')'", name: "SyntaxError", number: -2146827282, stack: "SyntaxError...", Symbol()_n.kyufm4c0tec: undefined, Symbol()_p.kyufm4c0tec: undefined, Symbol()_q.kyufm4c0tec: undefined, Symbol()_r.kyufm4c0tec: undefined, Symbol(Lang fallback)_m.kyufm4c0tec: undefined, Symbol(util.promisify.custom)_o.kyufm4c0tec: undefined}
Here is my code:
<template>
<ECharts :options="pie" style="width:300px; height:260px">
</ECharts>
</template>
<script>
import ECharts from "vue-echarts/components/ECharts.vue";
import "echarts/lib/chart/pie";
import "echarts/lib/component/title";
export default {
components: {
ECharts
},
data() {
return {
pie: {
backgroundColor: "transparent",
tooltip: {
trigger: "item",
formatter: "{a} <br/>{b} : {c} ({d}%)"
},
series: [{
name: "Product Sales",
type: "pie",
radius: ["50%", "70%"],
avoidLabelOverlap: false,
data: [{
value: 1,
name: "Product A"
},
{
value: 2,
name: "Product B"
},
{
value: 3,
name: "Product C"
}
],
label: {
normal: {
show: false,
position: "center"
},
emphasis: {
show: true,
textStyle: {
fontSize: "20",
fontWeight: "bold"
}
}
},
labelLine: {
normal: {
show: false
}
}
}]
}
};
}
};
</script>
what's an issue in IE browser I also searched for the solution and tried it but did't get the result.
Versions:
echarts-4.1.0,
vue-echarts: 3.1.1
Any help will be appreciated! Thanks

Answer 1

The documentation of vue-echarts-v3 does not inform it, but you have to add the echarts on your webpack (or any other bundler you are using) configuration as well.
{
test: /\.js$/,
loader: 'babel-loader',
include: [
resolve('src'),
resolve('test'),
resolve('node_modules/vue-echarts-v3/src'), // Their suggestion https://www.npmjs.com/package/vue-echarts-v3
resolve('node_modules/echarts/lib'), // Not suggested, but required as well
]
},