vue 3 typescript Uncaught (in promise) TypeError: this.$on is not a function [英] vue 3 typescript Uncaught (in promise) TypeError: this.$on is not a function

问题描述

我安装了一个带有 vue-cli 和 typescript 的全新 Vue 3.一切运行但是当我添加一个 https://vue-select.org/ 包时我在浏览器控制台上收到此错误

Uncaught (in promise) TypeError: this.$on is not a function在 Proxy.created (vue-select.js?4a7a:1)在 callWithErrorHandling (runtime-core.esm-bundler.js?5c40:155)在 callWithAsyncErrorHandling (runtime-core.esm-bundler.js?5c40:164)在 callHook (runtime-core.esm-bundler.js?5c40:3182)在 applyOptions (runtime-core.esm-bundler.js?5c40:3109)在finishComponentSetup (runtime-core.esm-bundler.js?5c40:7265)在 setupStatefulComponent (runtime-core.esm-bundler.js?5c40:7190)在 setupComponent (runtime-core.esm-bundler.js?5c40:7117)在 mountComponent (runtime-core.esm-bundler.js?5c40:5115)在 processComponent (runtime-core.esm-bundler.js?5c40:5090)

简单例子

Home.vue<模板><div class="home"><img alt="Vue logo";src=../assets/logo.png"><vSelect :options="[{label: 'Canada', code: 'ca'}]"></vSelect>

</模板><script lang="ts">import { Options, Vue } from 'vue-class-component';从 '@/components/HelloWorld.vue' 导入 HelloWorld；//@ 是/src 的别名从 'vue-select' 导入 vSelect；@选项({成分: {你好，世界，选择},})导出默认类 Home 扩展 Vue {}

解决方案

我认为问题与 Vue3 无关.它与打字稿有关.只需添加这个包@types/vue-select.这个包包含 vue-select 的类型定义.此外，如果您正在使用 webpack 作为您的包，请不要忘记添加此包 @types/webpack-env.它包含 webpack 的类型定义.

I have a fresh Vue 3 installed with vue-cli and typescript. Everything running but when I add a https://vue-select.org/ package I get get this error on the browser console

Uncaught (in promise) TypeError: this.$on is not a function
    at Proxy.created (vue-select.js?4a7a:1)
    at callWithErrorHandling (runtime-core.esm-bundler.js?5c40:155)
    at callWithAsyncErrorHandling (runtime-core.esm-bundler.js?5c40:164)
    at callHook (runtime-core.esm-bundler.js?5c40:3182)
    at applyOptions (runtime-core.esm-bundler.js?5c40:3109)
    at finishComponentSetup (runtime-core.esm-bundler.js?5c40:7265)
    at setupStatefulComponent (runtime-core.esm-bundler.js?5c40:7190)
    at setupComponent (runtime-core.esm-bundler.js?5c40:7117)
    at mountComponent (runtime-core.esm-bundler.js?5c40:5115)
    at processComponent (runtime-core.esm-bundler.js?5c40:5090)

Simple example

Home.vue
<template>
  <div class="home">
    <img alt="Vue logo" src="../assets/logo.png">
    <vSelect :options="[{label: 'Canada', code: 'ca'}]"></vSelect>
  </div>
</template>

<script lang="ts">
import { Options, Vue } from 'vue-class-component';
import HelloWorld from '@/components/HelloWorld.vue'; // @ is an alias to /src
import vSelect from 'vue-select';

@Options({
  components: {
    HelloWorld,
    vSelect
  },
})
export default class Home extends Vue {}
</script>

解决方案

I think the problem is not related to Vue3. It is related to typescript. Just add this package @types/vue-select. This package contains type definitions for vue-select. Also if you are using webpack for your bunlder, don't forget to add this package @types/webpack-env. It contains type definitions for webpack.

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