[
 {
  "name": "应用", // 面包屑名称（在命令交互中输入）
  "path": "/app", // 面包屑对应路径（根据文件自动生成）
  "clickable": true, // 是否可点击跳转
  "isShow": true // 是否显示
 },
 {
  "name": "应用详情",
  "path": "/app/detail",
  "clickable": true, // 是否可点击跳转
  "isShow": true // 是否显示
 }
]

[
  {
    "name": "应用",
    "path": "/app",
    "clickable": true,
    "isShow": true
  }，
  {
    "name": "应用",
    "path": "/app/detail",
    "clickable": true,
    "isShow": true
  }
]

export const state = () => ({
  breadcrumbData: []
})

export const mutations = {
 setBreadcrumb (state, breadcrumbData) {
  state.breadcrumbData = breadcrumbData
 },

 setBreadcrumbByName (state, {oldName, newName}) {
  let curBreadcrumb = state.breadcrumbData.find(breadcrumb => breadcrumb.name === oldName)

  curBreadcrumb && (curBreadcrumb.name = newName)
 },
 
 setBreadcrumbByPath (state, {path, name}) {
  let curBreadcrumb = state.breadcrumbData.find(
   breadcrumb => breadcrumb.path === path
  )
  curBreadcrumb && (curBreadcrumb.name = name)
 }
}

import breadcrumbs from '@/components/breadcrumb/breadcrumb.config.json'

function path2Arr(path) {
 return path.split('/').filter(p => p)
}

function matchBreadcrumbData (matchPath) {
 return path2Arr(matchPath)
  .map(path => {
   path = path.replace(/^:([^:"htmlcode">

<template>
 <div class="bcg-breadcrumb" v-if="isBreadcrumbShow">
  <el-breadcrumb separator="/">
   <el-breadcrumb-item
    v-for="(item, index) in breadcrumbData"
    :to="item.clickable "
    :key="index">
    {{ item.name }}
   </el-breadcrumb-item>
  </el-breadcrumb>
 </div>
</template>

<script>
import breadcrumbs from "./breadcrumb.config"
export default {
 name: 'Breadcrumb',
 computed: {
  isBreadcrumbShow () {
   return this.curBreadcrumb && this.curBreadcrumb.isShow
  },
  breadcrumbData () {
   return this.$store.state.breadcrumb.breadcrumbData
  },
  curBreadcrumb () {
   return this.breadcrumbData[this.breadcrumbData.length - 1]
  }
 }
}
</script>




cli命令实现


cli命令开发用到的相关库如下：这些就不细说了，基本上看下 README 就知道怎么用了

  
commander ：命令行工具
  
boxen ：在终端画一个框
  
inquirer ：命令行交互工具
  
handlebar：模版引擎

目录结构




lib // 存命令行文件
  |-- bcg.js
template // 存模版
  |-- breadcrumb // 面包屑配置文件与组件，将生成在项目 @/components 中
    |-- breadcrumb.config.json
    |-- index.vue
  |-- braadcrumb.js // vuex 相关文件，将生成在项目 @/store 中
  |-- new-page.vue // 新文件模版，将生成在命令行输入的新路径中
  |-- route.js // 路由前置守卫配置文件，将生成在 @/plugins 中
test // 单元测试相关文件


node 支持命令行，只需在 package.json 的 bin 字段中关联命令行执行文件


// 执行 bcg 命令时，就会执行 lib/bcg.js 的代码
{
 "bin": {
  "bcg": "lib/bcg.js"
 }
}




实现命令


实现一个 init 命令，生成相关面包屑文件（面包屑组件、 json配置文件、 前置守卫plugin、 面包屑store）


bcg init


实现一个 new 命令生成文件，默认基础路径是 src/pages ，带一个 -b 选项，可用来修改基础路径


bcg new <file-path> -b <base-path>


具体代码如下




#!/usr/bin/env node
const path = require('path')
const fs = require('fs-extra')

const boxen = require('boxen')
const inquirer = require('inquirer')
const commander = require('commander')
const Handlebars = require('handlebars')

const {
 createPathArr,
 log,
 errorLog,
 successLog,
 infoLog,
 copyFile
} = require('./utils')

const VUE_SUFFIX = '.vue'

const source = {
 VUE_PAGE_PATH: path.resolve(__dirname, '../template/new-page.vue'),
 BREADCRUMB_COMPONENT_PATH: path.resolve(__dirname, '../template/breadcrumb'),
 PLUGIN_PATH: path.resolve(__dirname, '../template/route.js'),
 STORE_PATH: path.resolve(__dirname, '../template/breadcrumb.js')
}

const target = {
 BREADCRUMB_COMPONENT_PATH: 'src/components/breadcrumb',
 BREADCRUMB_JSON_PATH: 'src/components/breadcrumb/breadcrumb.config.json',
 PLUGIN_PATH: 'src/plugins/route.js',
 STORE_PATH: 'src/store/breadcrumb.js'
}

function initBreadCrumbs() {
 try {
  copyFile(source.BREADCRUMB_COMPONENT_PATH, target.BREADCRUMB_COMPONENT_PATH)
  copyFile(source.PLUGIN_PATH, target.PLUGIN_PATH)
  copyFile(source.STORE_PATH, target.STORE_PATH)
 } catch (err) {
  throw err
 }
}

function generateVueFile(newPagePath) {
 try {
  if (fs.existsSync(newPagePath)) {
   log(errorLog(`${newPagePath} 已存在`))
   return
  }

  const fileName = path.basename(newPagePath).replace(VUE_SUFFIX, '')
  const vuePage = fs.readFileSync(source.VUE_PAGE_PATH, 'utf8')
  const template = Handlebars.compile(vuePage)
  const result = template({ filename: fileName })

  fs.outputFileSync(newPagePath, result)

  log(successLog('\nvue页面生成成功咯\n'))
 } catch (err) {
  throw err
 }
}

function updateConfiguration(filePath, {
 clickable,
 isShow
} = {}) {
 try {
  if (!fs.existsSync(target.BREADCRUMB_JSON_PATH)) {
   log(errorLog('面包屑配置文件不存在, 配置失败咯, 可通过 bcg init 生成相关文件'))
   return
  }

  let pathArr = createPathArr(filePath)
  const configurationArr = fs.readJsonSync(target.BREADCRUMB_JSON_PATH)

  // 如果已经有配置就过滤掉
  pathArr = pathArr.filter(pathItem => !configurationArr.some(configurationItem => configurationItem.path === pathItem))

  const questions = pathArr.map(pathItem => {
   return {
    type: 'input',
    name: pathItem,
    message: `请输入 ${pathItem} 的面包屑显示名称`,
    default: pathItem
   }
  })

  inquirer.prompt(questions).then(answers => {
   const pathArrLastIdx = pathArr.length - 1

   pathArr.forEach((pathItem, index) => {
    configurationArr.push({
     clickable: index === pathArrLastIdx "color: #ff0000">发布 npm


开发完成后，发布到 npm，具体方法就不细说了，发布后全局安装就能愉快的使用咯！
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。