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脚手架

2020-04-16 11:08:53   0  举报

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AI智能生成

前端脚手架开发

脚手架

前端

架构

模版推荐

作者其他创作

大纲/内容

必备模块

commander 

参数解析

inquirer

交互式命令行工具

download-git-repo

在 git 中下载模板

chalk

命令行中画颜色

metalsmith

读取所有文件，实现模板渲染

consolidate

统一了所有的模版引擎

将命令链接到全局

创建执行文件

建立 bin 文件夹， 一般新增名为 www 的可执行文件

#! /usr/bin/env node require('./src/main.js')

shebang line

Shebang line 指定脚本的解释程序 #!/usr/bin/env node is an instance of a shebang line: the very first line in an executable plain-text file on Unix-like platforms that tells the system what interpreter to pass that file to for execution, via the command line following the magic #! prefix (called shebang).

Note: Windows does not support shebang lines, so they're effectively ignored there; on Windows it is solely a given file's filename extension that determines what executable will interpret it. However, you still need them in the context of npm.

注册执行命令

package.json 中新增 bin 属性

{ ...<div>"bin":{   "zhu-cli":"./bin/www" } }</div>

install one or more executable files  into the PATH.  A bin field is a map of command name to local file name. On install, npm will symlink that file into prefix/bin for global installs, or ./node_modules/.bin/ for local installs.

symlink a package folder

在当前文件夹命令行中执行 npm link

npm link

用法

npm link (in package dir)

描述

npm link in a package folder will create a symlink in the global folder {prefix}/lib/node_modules/<package> that links to the package where the npm link command was executed. (see npm-config for the value of prefix). It will also link any bins in the package to {prefix}/bin/{name}.

安装 eslint 并初始化 eslint 配置文件

初始化配置文件

npx eslint --init

解析用户传递的参数

commander

src/main.js: const program = require('commander') program.parse(process.argv)

Reflect.ownKeys(mapActions).forEach(action => { program .command(action) .alias(mapActions[action].alias) .description(mapActions[action].description) .action(() => { console.log(action); if (action === "*") { console.log(mapActions[action].description); } else { console.log(action); // zhu-cli create xxx // => process.argv 为 [node,zhu-cli,create,xxx] require(path.resolve(__dirname,action))(...process.argv.slice(3)) } }); }); program.on("--help", () => { console.log("\nExamples:"); Reflect.ownKeys(mapActions).forEach(action => { mapActions[action].examples.forEach(example => { console.log(` ${example}`); }); }); });

拉取 github 数据

github api 文档

请求接口时 loading 状态

ora 包

让用户选择分支

inquirer 包

const { repo } = await Inquirer.prompt({   name:'repo',   type:'list',   message:'please choose a template to create project',   choices:repos })

存储模板

获取存储模板的位置

const downloadDirectory = `${process.env[process.platform === 'darwin' ? 'HOME' : 'USERPROFILE']}/.template`

下载 git 模板

download-git-repo

将回调方式转换成 promise 方式

const { promisify } = require('util') let downloadGitRepo = require('download-git-repo'); downloadGitRepo = promisify(downloadGitRepo)

把模板放在 /usr/xxx/.template 里存好，以备后期使用

const download = async (repo, tag) => { let api = `zhu-cli/${repo}`; if (tag) { api += `#${tag}`; } const dest = `${downloadDirectory}/${repo}`; await downloadGitRepo(api, dest); return dest; };

将下载好的模板拷贝到当前执行命令下的目录

ncp 包

// 返回的 result 是下载的目录 const result = await waitFnloading(download, 'download template')(repo, tag); await ncp(result, path.resolve(projectName))

path.resolve 如果在处理完所有给定的 path 片段之后还未生成绝对路径，则再加上当前工作目录。

渲染复杂的模板

根据是否有 ask.js 文件来判断是否是复杂模板 if(!fs.existsSync(path.join(result,'ask.js'))){ await ncp(result,path.resolve(projectName)) }else{ }

简单

复杂

发包

nrm use npm

nrm can help you easy and fast switch between different npm registries, now include: npm, cnpm, taobao, nj(nodejitsu)

npm addUser