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jin-cli

v1.0.0

Published

This project is based on scaffolding built by node

Downloads

3

Readme

scaffold_jincli

This project is based on scaffolding built by node

vue-cli, create-react-appreact-native-cli 等都是非常优秀的脚手架,通过脚手架,我们可以快速初始化一个项目,无需自己从零开始一步步配置,有效提升开发体验。尽管这些脚手架非常优秀,但是未必是符合我们的实际应用的,我们可以定制一个属于自己的脚手架(或公司通用脚手架),来提升自己的开发效率。

脚手架

解决的问题:

  • 重复性工作,繁琐而且浪费时间
  • copy过来的模板容易存在无关的代码
  • 项目中有很多需要配置的地方,容易忽略一些配置点,进而埋坑
  • 人工操作永远都有可能犯错,建新项目时,总要花时间去排错

针对以上问题,我开发了一个脚手架工具,可以根据交互动态生成项目结构,自动添加依赖和配置,并移除不需要的文件。

基本思路

  • 将项目模板与脚手架工具分离,可以更好的维护模板和脚手架工具。
  • 通过commander.js处理命令行
  • 通过download-git-repo处理下载
  • 通过inquirer.js处理终端交互
  • 参考了git的ignore的思路,利用自定义的templates.ignore动态化的移除不必要的文件和目录 未完成

commander.js处理命令行

node.js 内置了对命令行操作的支持,package.json 中的 bin 字段可以定义命令名和关联的执行文件。在 package.json 中添加 bin 字段

package.json

{
  "name": "jin-cli",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "bin": {
    "love": "./bin/love.js"
  }
}

bin/love.js

// 通过npm install commander安装
const program = require('commander')

program.version('1.0.0')
  .usage('<command> [项目名称]')
  .command('init', '创建新项目')
  .parse(process.argv)

如果这样直接执行,程序会报找不到love-init的错误,因为commander支持git风格的子命令处理,可以根据子命令自动引导到以特定格式命名的命令执行文件,文件名的格式是[command]-[subcommand],例如:love init => love-init。因此新建love-init.js后输入代码

console.log('I Love Program')
执行:node ./bin/love.js init
输出:I Love Program

再来看看love-init.js如何实现脚手架的各项功能

功能实现

.......