脚手架的开发流程
1 )开发流程
- 创建 npm 项目
- 创建脚手架入口文件,最上方添加:
#!/usr/bin/env node
- 配置 package.json, 添加 bin 属性
- 编写脚手架代码
- 将脚手架发布到 npm
2 )使用流程
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安装脚手架
npm install -g your-own-cli
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使用脚手架
your-own-cli
3 )脚手架开发难点
- 分包: 将复杂的系统拆分成若干个模块,并且合并成一个复杂系统
- 命令注册,如:
- $
vue create
- $
vue add
- $
vue invoke
- 这里需要了解,如何注册命令,以及执行命令
- $
- 参数解析
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如:
vue command [options] <params>
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options全称: --version, --help
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options简写:-V, -h
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带params的options: --path /Users/xxx/.../vue-test
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帮助文档:
-
global help 是指对主命令进行帮助
- Usage
- Options
- Commands
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vue的帮助文档示例,这个属于 global help
$ vue Usage: vue <command> [options] Options: -V, --version output the version number -h, --help output usage information Commands: create [options] <app-name> create a new project powered by vue-cli-service add [options] <plugin> [pluginOptions] install a plugin and invoke its generator in an already created project invoke [options] <plugin> [pluginOptions] invoke the generator of a plugin in an already created project inspect [options] [paths...] inspect the webpack config in a project with vue-cli-service serve [options] [entry] serve a .js or .vue file in development mode with zero config build [options] [entry] build a .js or .vue file in production mode with zero config ui [options] start and open the vue-cli ui init [options] <template> <app-name> generate a project from a remote template (legacy API, requires @vue/cli-init) config [options] [value] inspect and modify the config upgrade [semverLevel] upgrade vue cli service / plugins (default semverLevel: minor) info print debugging information about your environment Run vue <command> --help for detailed usage of given command.
- 可见,可通过 vue -V, 或 vue -h 可查看具体的信息
- global help 只能表示主命令的用法,对于子命令,也同样需要
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command help 子命令帮助
- Usage
- Options
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子命令的帮助信息,举例
$ vue create Usage: create [options] <app-name> create a new project powered by vue-cli-service Options: -p, --preset <presetName> Skip prompts and use saved or remote preset -d, --default Skip prompts and use default preset -i, --inlinePreset <json> Skip prompts and use inline JSON string as preset -m, --packageManager <command> Use specified npm client when installing dependencies -r, --registry <url> Use specified npm registry when installing dependencies (only for npm) -g, --git [message] Force git initialization with initial commit message -n, --no-git Skip git initialization -f, --force Overwrite target directory if it exists -c, --clone Use git clone when fetching remote preset -x, --proxy Use specified proxy when creating project -b, --bare Scaffold project without beginner instructions --skipGetStarted Skip displaying "Get started" instructions -h, --help output usage information Missing required argument <app-name>.
-
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同样,还有很多,如:
- 命令行交互: 可以选择
- 日志打印: 标准打印
- 命令行文字变色: 错误红色,警告黄色
- 网络通信:HTTP/WebSocket
- 文件处理
- ...
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