vue自定义组件定义事件（基于Vue实现自定义组件的方式引入图标）

// vue.config.js
const { resolve } = require('path')

module.exports = {
  chainWebpack(config) {
    config
      .module
      .rule('svg')
      .exclude
      .add(resolve('src/icons'))
      .end()
    config
      .module
      .rule('icons')
      .test(/\.svg$/)
      .include
      .add(resolve('src/icons'))
      .end()
      .use('svg-sprite-loader')
      .loader('svg-sprite-loader')
      .options({
        symbolId: 'icon-[name]'
      })
  }
}

<template>
  <i class="icon">
    <!-- aria-hidden, 帮助残障人士阅读(设备读取内容时会跳过这个标签以免混淆) -->
    <svg aria-hidden="true" :width="size" :height="size" :fill="fillColor">
      <use :xlink:href="iconName" rel="external nofollow" ></use>
    </svg>
  </i>
</template>

<script lang="ts">
import { PropType, toRefs } from 'vue'

export default {
  props: {
    size: {
      type: Number as PropType<number>,
      default: 14
    },
    fillColor: {
      type: String as PropType<string>,
      default: '#000'
    },
    iconName: {
      type: String as PropType<string>,
      required: true
    }
  },
  setup(props: any) {
    const { size, fillColor, iconName: _iconName } = toRefs(props)
    const iconName = `#${_iconName.value}`

    return {
      size,
      fillColor,
      iconName
    }
  }
}
</script>

// index.ts
import SvgIcon from '@/components/SvgIcon.vue'
import { App } from 'vue'

export default (app: App) => {
  app.component('svg-icon', SvgIcon)
}

const ctx = require.context('./svg', false, /\.svg$/)
const requestAll = (ctx: __WebpackModuleApi.RequireContext) => ctx.keys().forEach(ctx)

requestAll(ctx)

// main.ts
import { createApp } from 'vue'
import App from './App.vue'
import installSvgIcon from '@/icons/index'

const app = createApp(App)

installSvgIcon(app)
app.mount('#app')

<template>
  <img alt="Vue logo" src="./assets/logo.png">
  <svg-icon icon-name="icon-dashboard"></svg-icon>
  <HelloWorld msg="Welcome to Your Vue.js + TypeScript App"/>
</template>