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思路1，调用命令 设置源
npm config set registry 源地址
思路2 使用查看命令获取源地址
npm config get registry
主要就是这两步操作
代码实现
commander
commander是一个nodejs的模块可以解析我们输入的命令，常用于各种脚手架如vue vite等，
例如 xxx -V查看版本 xxx use执行脚本 xxx -h查看帮助 等都可以使用 commander实现
inquirer
inquirer也是nodejs的一个模块，常用于命令交互，如vue的cli，vite等，react脚手架等
例如这种选项，还有输入框，多选等
registries.json
这个文件里面放一些初始的源,从nrm的github偷的ping是我自己加的
{ "npm": { "home": "https://www.npmjs.org", "registry": "https://registry.npmjs.org/", "ping": "https://registry.npmjs.org" }, "yarn": { "home": "https://yarnpkg.com", "registry": "https://registry.yarnpkg.com/", "ping": "https://registry.yarnpkg.com" }, "tencent": { "home": "https://mirrors.cloud.tencent.com/npm/", "registry": "https://mirrors.cloud.tencent.com/npm/", "ping": "https://mirrors.cloud.tencent.com/npm" }, "cnpm": { "home": "https://cnpmjs.org", "registry": "https://r.cnpmjs.org/", "ping": "https://r.cnpmjs.org" }, "taobao": { "home": "https://npmmirror.com", "registry": "https://registry.npmmirror.com/", "ping": "https://registry.npmmirror.com" }, "npmMirror": { "home": "https://skimdb.npmjs.com/", "registry": "https://skimdb.npmjs.com/registry/", "ping": "https://skimdb.npmjs.com/registry" }}#!/usr/bin/env nodeconst { program } = require('commander')const PKG = require('../package.json') //引入package jsonconst registries = require('../registries.json'); //引入初始源const inquirer = require('inquirer');const { exec, execSync } = require('child_process') //子线程用于执行shell命令const ping = require('node-http-ping') //ping网址的一个库const fs = require('fs')const chalk = require("chalk"); //console 变颜色的一个库const path = require('path')program.version(PKG.version) //设置版本默认命令 -V --version//读取源地址方便设置*const getOrigin = async () => { return await execSync('npm get registry', { encoding: "utf-8" })}//列出所有的源，如果当前有在使用前面加上*program.command('ls').description('查看镜像').action(async () => { const res = await getOrigin() const keys = Object.keys(registries) const message = [] //填充横线算法npm------ yarn------ const max = Math.max(...keys.map(v => v.length)) + 3 keys.forEach(k => { const newK = registries[k].registry == res.trim() ? ('* ' + k) : (' ' + k) const Arr = new Array(...newK) Arr.length = max; const prefix = Array.from(Arr).map(v => v ? v : '-').join('') message.push(prefix + ' ' + registries[k].registry) }) console.log(message.join('\n'))})//切换源program.command('use').description('请选择镜像').action(() => { inquirer.prompt([ { type: "list", name: "sel", message: "请选择镜像", choices: Object.keys(registries) } ]).then(result => { const reg = registries[result.sel].registry exec(`npm config set registry ${reg}`, null, (err, stdout, stderr) => { if (err) { console.error('切换错误', err) } else { console.log('切换成功') } }) })})//获取当前源program.command('current').description('查看当前源').action(async () => { const reg = await getOrigin() const v = Object.keys(registries).find(k => { if (registries[k].registry === reg.trim()) { return k; } }) console.log(chalk.blue('当前源:', v))})//ping 源program.command('ping').description('测试镜像地址速度').action(() => { inquirer.prompt([ { type: "list", name: "sel", message: "请选择镜像", choices: Object.keys(registries) } ]).then(result => { const url = registries[result.sel].ping.trim() ping(url).then(time => console.log(chalk.blue(`响应时长: ${time}ms`))) .catch(() => console.log(chalk.red('GG'))) })})//添加源 读写registries.json 文件实现program.command('add').description('自定义镜像').action(() => { inquirer.prompt([ { type: "input", name: "name", message: "请输入镜像名称", validate(answer) { const keys = Object.keys(registries) if (keys.includes(answer)) { return `不能起名${answer}跟保留字冲突` } if (!answer) { return '名称不能为空' } return true } }, { type: "input", name: "url", message: "请输入镜像地址", validate(answer) { if (!answer) { return `url不能为空` } return true } } ]).then(result => { const del = (url) => { const arr = url.split('') //本来想用at 16 以下不支持 return arr[arr.length - 1] == '/' ? (arr.pop() && arr.join('')) : arr.join('') } registries[result.name] = { home: result.url.trim(), registry: result.url.trim(), ping: del(result.url.trim()), //去掉末尾/ 不然无法ping } fs.writeFileSync(path.join(__dirname, '../registries.json'), JSON.stringify(registries, null, 4)) console.log(chalk.blue('添加完成')) })})program.parse(process.argv)
使用方式
npm i xmzs -g
安装完之后会有一个mmp 命令为什么不叫xmzs 别问问就是喜欢mmp
mmp ls
列出所有的源
mmp use
切换源 nrm是输入，我这儿是选择框方便一些
mmp current
查看当前源
mmp ping
测速
map add
自定义源
mmp ls 查看
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