关键词 vue
typescript
webpack
本文是为下一篇《3分钟搞定 Vue + TypeScript开发》文章做的知识铺垫,文章结尾提供完整的github示例代码库。
准备
已经掌握vue开发的情况下,想体验一下TypeScript开发vue,可以通过以下过程配置一个脚手架。
1.阅读webpack官网文档 https://www.webpackjs.com/
-
webpack工作原理
- 入口起点(entry points)
- 输出(output)
- 模式(mode)
- loader
- 插件(plugins)
- 配置(configuration)
- 模块(modules)
- 模块解析(module resolution)
- 依赖图(dependency graph)
- manifest
- 构建目标(targets)
- 模块热替换(hot module replace)
2.阅读TypeScript官网文档 https://www.tslang.cn/docs/ho...
-
脚手架搭建了解辅导教程部分
- 5分钟上手TypeScript
- ASP.NET Core
- Gulp
- JavaScript迁移
- React & Webpack
3.阅读Vue官网文档
- vue配置入门: https://cn.vuejs.org/v2/guide...
开始配置
npm < 5.x 建议升级到更高版本(当前稳定版本6.7.0), 或使用yarn来管理包
配置文件
-
完成准备工作后下面就要进行这3类文件的配置
- package.json
- webpack.config.js
- tsconfig.json
-
配置思路,渐进式配置避免过程中问题堆积,先让脚手架工作起来
- 首先要让webpack能运行起来
- 安装Vue框架, 配置Vue、TS编译所需的loader和plugins
让webpack运行起来
这是一个使webpack能工作的最小配置。
当写好一个webpack配置, 从最简单的一步开始感受一下webpack, 建立亲切感往后就容易多了。
webpack配置文件:
/**
* @file ./config/webpack.config.js
* @author CharlesYu01
*/
module.exports = {
entry: './index.ts',
mode: 'production'
};
编译执行结果:
$ webpack --config ./config/webpack.config.js
Hash: 067221c5690968574418
Version: webpack 4.29.0
Time: 86ms
Built at: 2019-01-26 14:05:49
Asset Size Chunks Chunk Names
main.js 930 bytes 0 [emitted] main
Entrypoint main = main.js
[0] ./index.ts 0 bytes {0} [built]
可以看一下编译出来的内容,默认在./dist/main.js中。
ps:恩,你已经掌握了webpack最核心的玩法了,处理更复杂的工作时再去了解loader、plugins的原理。
用Vue+TS编写一个可浏览的页面
- 安装插件
// package.json
// TODO: 掌握各插件的作用
...
"devDependencies": {
"awesome-typescript-loader": "^5.2.1",
"html-webpack-plugin": "^3.2.0",
"source-map-loader": "^0.2.4",
"ts-loader": "^5.3.3",
"typescript": "^3.2.4",
"vue-class-component": "^6.3.2",
"vue-loader": "^15.6.1",
"vue-tsx-support": "^2.2.2",
"webpack": "^4.29.0",
"webpack-cli": "^3.2.1",
"webpack-dev-server": "^3.1.14"
},
"dependencies": {
"vue": "^2.5.22",
"vue-property-decorator": "^7.3.0"
}
...
webpack安装时如有异常,使用官网推荐方法 yarn add webpack --dev
- 添加html入口文件
有了编译产出的js,还需要将js引入到页面中,此时使用webpack plugins配置一个插件
html-webpack-plugin
, 就可以完成html页面引入js的功能。 -
添加vue template 的编译能力
vue-loader
引用vue官网:
运行时 + 编译器 vs. 只包含运行时
如果你需要在客户端编译模板 (比如传入一个字符串给 template 选项,或挂载到一个元素上并以其 DOM 内部的 HTML 作为模板),就将需要加上编译器,即完整版:
new Vue({
template: '{{ hi }}'
})
// 不需要编译器
new Vue({
render (h) {return h('div', this.hi)
}
})
// 配置webpack.config.js
module.exports = {
resolve: {
alias: {'vue$': 'vue/dist/vue.esm.js' }
}
}
-
添加一个可预览的webServer
webpack-dev-server
devServer: { contentBase: '../dist', port: 9000 }
验证结果
1.用TypeScript实现一个Input组件
/example/vue-tsx/Input.tsx
import {VNode} from 'vue/types';
import Component from 'vue-class-component';
import * as Vue from 'vue-tsx-support';
import { Prop } from 'vue-property-decorator';
export interface InputProps {
placeholder: String
}
@Component
export default class Input extends Vue.Component {
[x: string]: any;
text: any;
input(e) {
this.text = e.target.value
this.$emit('input', e.target.value);
}
@Prop([String, Boolean]) value: string | boolean | undefined;
data() {
return {
text: ''
}
}
render() {
return
}
}
2.引用组件
new Vue({
template: '组件{{message}} ',
data:{
message:'hello Vue!'
},
methods:{
input:function(e) {
this.message = e.target.value;
}
}
}).$mount('#app');
3.预览
// 可以全量安装一次项目依赖
yarn install
yarn start
$ webpack-dev-server --config ./config/webpack.config.js
ℹ 「wds」: Project is running at http://localhost:9000/
ℹ 「wds」: webpack output is served from /
ℹ 「wds」: Content not from webpack is served from ../dist
ℹ 「wdm」: Hash: 9bf165f80a4d3c7600c0
Version: webpack 4.29.0
Time: 2129ms
Built at: 2019-01-26 19:49:49
Asset Size Chunks Chunk Names
./index.html 409 bytes [emitted]
main.js 662 KiB main [emitted] main
Entrypoint main = main.js
[0] multi (webpack)-dev-server/client?http://localhost:9000 ./example/index.ts 40 bytes {main} [built]
[./example/index.ts] 471 bytes {main} [built]
[./node_modules/ansi-html/index.js] 4.16 KiB {main} [built]
[./node_modules/ansi-regex/index.js] 135 bytes {main} [built]
[./node_modules/events/events.js] 13.3 KiB {main} [built]
[./node_modules/html-entities/index.js] 231 bytes {main} [built]
[./node_modules/loglevel/lib/loglevel.js] 7.68 KiB {main} [built]
[./node_modules/strip-ansi/index.js] 161 bytes {main} [built]
[./node_modules/url/url.js] 22.8 KiB {main} [built]
[./node_modules/vue/dist/vue.esm.js] 289 KiB {main} [built]
[./node_modules/webpack-dev-server/client/index.js?http://localhost:9000] (webpack)-dev-server/client?http://localhost:9000 7.78 KiB {main} [built]
[./node_modules/webpack-dev-server/client/overlay.js] (webpack)-dev-server/client/overlay.js 3.58 KiB {main} [built]
[./node_modules/webpack-dev-server/client/socket.js] (webpack)-dev-server/client/socket.js 1.05 KiB {main} [built]
[./node_modules/webpack/hot sync ^\.\/log$] (webpack)/hot sync nonrecursive ^\.\/log$ 170 bytes {main} [built]
[./node_modules/webpack/hot/emitter.js] (webpack)/hot/emitter.js 75 bytes {main} [built]
+ 15 hidden modules
Child html-webpack-plugin for "index.html":
1 asset
Entrypoint undefined = ./index.html
[./node_modules/html-webpack-plugin/lib/loader.js!./example/index.html] 618 bytes {0} [built]
[./node_modules/lodash/lodash.js] 527 KiB {0} [built]
[./node_modules/webpack/buildin/global.js] (webpack)/buildin/global.js 472 bytes {0} [built]
[./node_modules/webpack/buildin/module.js] (webpack)/buildin/module.js 497 bytes {0} [built]
ℹ 「wdm」: Compiled successfully.
效果
示例代码:
https://github.com/CharlesYu0...
TODO:
- 后续增加更多webpack构建示例
- 基于vue cli3.0开发一套适合多种项目结构使用的插件化vue脚手架 (预计19年7月份)