Vue-echarts is not displaying anything

[cacious8]

My vue-echarts is not included in the dom. I am using the code from this link.

GitHub (npmjs.com)

I am using the vue2 version with the latest version of nuxt.

<template>
  <v-chart class="chart" :option="option" />
</template>

<script>
import { use } from "echarts/core"
import { CanvasRenderer } from "echarts/renderers"
import { PieChart } from "echarts/charts"
import {
  TitleComponent,
  TooltipComponent,
  LegendComponent
} from "echarts/components"
import VChart, { THEME_KEY } from "vue-echarts"

use([
  CanvasRenderer,
  PieChart,
  TitleComponent,
  TooltipComponent,
  LegendComponent
])

export default {
  name: "HelloWorld",
  components: {
    VChart
  },
  provide: {
    [THEME_KEY]: "dark"
  },
  data() {
    return {
      option: {
        title: {
          text: "Traffic Sources",
          left: "center"
        },
        tooltip: {
          trigger: "item",
          formatter: "{a} <br/>{b} : {c} ({d}%)"
        },
        legend: {
          orient: "vertical",
          left: "left",
          data: [
            "Direct",
            "Email",
            "Ad Networks",
            "Video Ads",
            "Search Engines"
          ]
        },
        series: [
          {
            name: "Traffic Sources",
            type: "pie",
            radius: "55%",
            center: ["50%", "60%"],
            data: [
              { value: 335, name: "Direct" },
              { value: 310, name: "Email" },
              { value: 234, name: "Ad Networks" },
              { value: 135, name: "Video Ads" },
              { value: 1548, name: "Search Engines" }
            ],
            emphasis: {
              itemStyle: {
                shadowBlur: 10,
                shadowOffsetX: 0,
                shadowColor: "rgba(0, 0, 0, 0.5)"
              }
            }
          }
        ]
      }
    };
  }
};
</script>

<style scoped>
.chart {
  height: 400px;
}
</style>

I had an error earlier that said: SyntaxError Unexpected token ‘export’ but resolved it with the solution provided on the link :

SyntaxError Unexpected token 'export'

What could be causing the chart to be not included in the DOM. Urgent help needed please.

[lasjorg]

Do you have a repo or maybe better a live version on Codesandbox we can look at?

I got it working here, maybe you can compare it. It’s just a fork of the NuxtJS example project with the vue-echarts example code, dependencies and configs added.

NuxtJS - vue-echarts - CodeSandbox

[cacious8]

Your solution worked. All I needed was to include the following module:

buildModules: ["@nuxtjs/composition-api/module"]

in my nuxt.config.js file.

My package.json file needed both of the following packages installed as well:

  "devDependencies": {
        "@nuxtjs/composition-api": "^0.29.2",
        "@vue/composition-api": "^1.2.2"
   }

A working version can be found here.

This solution was made possible by @lasjorg’s sandbox provided above and forked by me for a clearer explanation.