App.vue

<template>
  <Bar :data="data" :options="options" />
</template>

<script lang="ts" setup>
import { ref, onMounted } from 'vue'
import {
  Chart as ChartJS,
  Title,
  Tooltip,
  Legend,
  BarElement,
  CategoryScale,
  LinearScale,
  ChartData
} from 'chart.js'
import { Bar } from 'vue-chartjs'
import * as chartConfig from './chartConfig'

ChartJS.register(Title, Tooltip, Legend, BarElement, CategoryScale, LinearScale)

const options = chartConfig.options
const data = ref<ChartData<'bar'>>({
  datasets: []
})

onMounted(() => {
  setInterval(() => {
    data.value = chartConfig.randomData()
  }, 3000)
})
</script>