1.create-vite #

1.1 create-vite简介 #

1.2 使用 # 

npm init vite
Need to install the following packages:
  create-vite
Ok to proceed? (y) y
√ Project name: ... vite-project
√ Select a framework: » react
√ Select a variant: » react

Scaffolding project in C:\aprepare\t1\vite-project...

Done. Now run:

  cd vite-project
  npm install
  npm run dev

1.3 create-vite源码调试 # 

git clone https://github.com/vitejs/vite.git
cd vite
yarn install
packages\create-vite\index.js

.vscode\launch.json

{
    "version": "0.2.0",
    "configurations": [
        {
            "type": "pwa-node",
            "request": "launch",
            "name": "Launch Program",
            "skipFiles": [
                "<node_internals>/**"
            ],
            "program": "${workspaceFolder}\\packages\\create-vite\\index.js",
            "args": ["create","vite-project"]
        }
    ]
}

1.4 create-vite功能 #

2.初始化项目 #

2.1 lerna初始化 # 

mkdir vite100
cd vite100
lerna init

2.2 使用yarn workspace #

2.2.1 lerna.json # 

{
  "packages": [
    "packages/*"
  ],
  "version": "0.0.0",
+ "npmClient": "yarn",
+ "useWorkspaces": true
}

2.2.2 package.json # 

{
  "name": "root",
  "private": true,
  "devDependencies": {
    "lerna": "^4.0.0"
  },
+  "workspaces": [
+    "packages/*"
+ ]  
}

2.3 创建子包 # 

lerna create @vite100/config -y //配置项
lerna create @vite100/create -y //创建项目
lerna create vite100 -y  //核心命令
lerna create @vite100/settings -y  //常量定义
lerna create @vite100/utils -y //工具方法
lerna create @vite100/cli-plugin-router -y //工具方法

2.4 安装依赖 #

2.4.1 config\package.json #

packages\config\package.json

{
  "dependencies": {
    "@vite100/settings": "^0.0.0",
    "@vite100/utils": "^0.0.0",
    "fs-extra": "^10.0.0",
    "userhome": "^1.0.0"
   }
}

2.4.2 create\package.json #

packages\create\package.json

{
  "dependencies": {
    "@vite100/settings": "^0.0.0",
    "@vite100/utils": "^0.0.0",
    "chalk": "^4.1.2",
    "clone-git-repo": "^0.0.2",
    "ejs": "^3.1.6",
    "execa": "^5.1.1",
    "fs-extra": "^10.0.0",
    "glob": "^7.1.7",
    "inquirer": "^8.1.2",
    "isbinaryfile": "^4.0.8",
    "vue-codemod": "^0.0.5"
  }
}

2.4.3 utils\package.json #

packages\utils\package.json

{
  "dependencies": {
    "@vite100/settings": "^0.0.0",
    "axios": "^0.21.2",
    "cross-spawn": "^7.0.3",
    "userhome": "^1.0.0",
    "npmlog": "^5.0.1",
    "ora": "^6.0.0",
    "userhome": "^1.0.0"
  }
}

2.4.4 vite100\package.json #

packages\vite100\package.json

{
  "dependencies": {
    "@vite100/config": "^0.0.0",
    "@vite100/create": "^0.0.0"
  }
}

2.4.5 publishConfig # 

{
  "publishConfig": {
    "access": "public",
    "registry": "http://registry.npmjs.org"
  }
}

vite100

2.5 配置命令 #

2.5.1 package.json #

packages\vite100\package.json

{
  "name": "vite100",
  "version": "0.0.0",
  "dependencies": {
    "@vite100/config":"^0.0.0",
    "@vite100/create":"^0.0.0"
  },
+ "bin":{
+   "vite100": "index.js"
+ }
}

2.5.2 index.js #

packages\vite100\index.js

#!/usr/bin/env node

async function main() {
   let argv = process.argv.slice(2);
   console.log(argv);
}

main().catch((err) => {
    console.error(err);
});


yarn link
yarn global bin 
C:\Users\zhangrenyang\AppData\Local\Yarn\bin
C:\Users\zhangrenyang\AppData\Local\Yarn\Data\link\vite100
npm bin -g
C:\Users\zhangrenyang\AppData\Roaming\npm
vite100 create vite-project

3.实现配置命令 #

3.1 安装依赖 # 

yarn workspace @vite100/config  add userhome fs-extra
yarn workspace @vite100/utils  add cross-spawn userhome fs-extra

3.2 settings\index.js #

packages\settings\index.js

//执行命令脚本
exports.COMMAND_SOURCE = `
const args = JSON.parse(process.argv[1]);
const factory = require('.');
factory(args);
`
//配置文件名称
exports.RC_NAME = ".vite100rc";

3.3 config.js #

packages\utils\config.js

const userhome = require("userhome");
const fs = require("fs-extra");
const { RC_NAME } = require("@vite100/settings");
const configPath = userhome(RC_NAME);
let config = {};
if (fs.existsSync(configPath)) {
  config = fs.readJSONSync(configPath);
}
config.configPath=configPath;
module.exports = config;

3.4 executeNodeScript.js #

packages\utils\executeNodeScript.js

const spawn = require("cross-spawn");
async function executeNodeScript({ cwd }, source, args) {
    return new Promise((resolve) => {
      const childProcess = spawn(
        process.execPath,
        ["-e", source, "--", JSON.stringify(args)],
        { cwd, stdio: "inherit" }
      );
      childProcess.on("close", resolve);
    });
}
module.exports = executeNodeScript;

3.5 log.js #

packages\utils\log.js

const log = require('npmlog');
log.heading = 'vite100';
module.exports = log;

3.6 utils\index.js #

packages\utils\index.js

exports.log = require('./log');
exports.executeNodeScript = require('./executeNodeScript');
exports.config = require('./config');

3.7 config\command.js #

packages\config\command.js

const {executeNodeScript} = require('@vite100/utils');
const {COMMAND_SOURCE} = require('@vite100/settings');
const command = {
  command: "config [key] [value]",
  describe: "设置或查看配置项,比如GIT_TYPE设置仓库类型，ORG_NAME设置组织名",
  builder: (yargs) => {},
  handler:async function(argv){
    //await executeNodeScript({ cwd: __dirname }, COMMAND_SOURCE,argv);
    require('.')(argv);
  },
};
module.exports = command;

3.8 config\index.js #

packages\config\index.js

const fs = require("fs-extra");
const { log ,config} = require("@vite100/utils");
async function factory(argv) {
  const { key, value } = argv;
  if (key && value) {
    config[key] = value;
    await fs.writeJSON(config.configPath, config, { spaces: 2 });
    log.info("vite100","(%s=%s)配置成功保存至%s", key, value, config.configPath);
  }else if(key){
      console.log('%s=%s',key, config[key]);
  }else{
    console.log(config);
  }
}
module.exports = factory;

3.9 vite100\index.js #

packages\vite100\index.js

#!/usr/bin/env node
const yargs = require("yargs/yargs");
const configCmd = require("@vite100/config/command");
async function main() {
    const cli = yargs();
    cli
    .usage(`Usage: vite100 <command> [options]`)
    .demandCommand(1, "至少需要一个命令")
    .strict() 
    .recommendCommands()
+   .command(configCmd)
    .parse(process.argv.slice(2));
}

main().catch((err) => {
    console.error(err);
});

4.创建项目目录 #

4.1 create\command.js #

packages\create\command.js

const {COMMAND_SOURCE} = require('@vite100/settings');
const {executeNodeScript} = require('@vite100/utils');
const command = {
  command: "create <name>",
  describe: "创建项目",
  builder: (yargs) => {
    yargs.positional("name", {
      type: "string",
      describe: "项目名称",
    });
  },
  handler:async function(argv){
    let args = {projectName:argv.name,workingDirectory:process.cwd()};
    //await executeNodeScript({ cwd: __dirname }, COMMAND_SOURCE,args);
    require('.')(args);
  }
};
module.exports = command;

4.2 create\index.js #

packages\create\index.js

const path = require("path");
const fs = require("fs-extra");
const execa = require("execa");
const { red } = require("chalk");
const { config, log } = require("@vite100/utils");

async function create(argv) {
    const { workingDirectory, projectName } = argv;
    const { GIT_TYPE, ORG_NAME } = config;
    if (!GIT_TYPE) {
        throw new Error(red("X") + " 尚未配置仓库类型!");
    }
    if (!ORG_NAME) {
        throw new Error(red("X") + " 尚未配置组织名称!");
    }
    const projectDir = path.join(workingDirectory, projectName);
    log.info("vite100", "创建的项目目录为%s", projectDir);
}
module.exports = (...args) => {
    return create(...args).catch(err => {
        console.error(err);
    });
};

4.3 vite100\index.js #

packages\vite100\index.js

#!/usr/bin/env node
const yargs = require("yargs/yargs");
const configCmd = require("@vite100/config/command");
+const createCmd = require("@vite100/create/command");
async function main() {
    const cli = yargs();
    cli
    .usage(`Usage: vite100 <command> [options]`)
    .demandCommand(1, "至少需要一个命令")
    .strict() 
    .recommendCommands()
+   .command(createCmd)
    .command(configCmd)
    .parse(process.argv.slice(2));
 }

 main().catch((err) => {
     console.error(err);
 });

5. 获取选择项 #

5.1 router.js #

packages\create\lib\promptModules\router.js

module.exports = cli => {
    cli.injectFeature({
        name: 'Router',
        value: 'router',
        description: '请选择路由模式',
        link: 'https://www.npmjs.com/package/react-router-dom'
    })
    cli.injectPrompt({
        name: 'historyMode',
        when: answers => answers.features.includes('router'),
        message: '请选择history的模式',
        type: 'list',
        choices: [
            {
                name: 'hash',
                value: 'hash'
            },
            {
                name: 'browser',
                value: 'browser'
            }
        ],
        default: 'browser'
    })
    cli.injectPrompt({
        name: 'appTitle',
        when: answers => answers.features.includes('router'),
        message: '请输入根组件的标题',
        type: 'text',
        default: 'AppTitle'
    })
    cli.onPromptComplete((answers, projectOptions) => {
        if (answers.features.includes('router')) {
            projectOptions.historyMode =answers.historyMode;
            projectOptions.appTitle=answers.appTitle;
        }
    })
}

5.2 getPromptModules.js #

packages\create\lib\getPromptModules.js

function getPromptModules() {
    return ['router'].map(file => require(`./promptModules/${file}`));
}
module.exports = getPromptModules;

5.3 create\index.js #

packages\create\index.js

const path = require("path");
const { red } = require("chalk");
const { config, log } = require("@vite100/utils");
+const getPromptModules = require('./lib/getPromptModules');
async function create(argv) {
    const { workingDirectory, projectName } = argv;
    const { GIT_TYPE, ORG_NAME } = config;
    if (!GIT_TYPE) {
        throw new Error(red("X") + " 尚未配置仓库类型!");
    }
    if (!ORG_NAME) {
        throw new Error(red("X") + " 尚未配置组织名称!");
    }
    const projectDir = path.join(workingDirectory, projectName);
    log.info("vite100", "创建的项目目录为%s", projectDir);
+   let promptModules = getPromptModules();
+   console.info("选择项promptModules", promptModules);
}
module.exports = (...args) => {
    return create(...args).catch(err => {
        console.error(err);
    });
};

6. 获取回答 #

6.1 PromptModuleAPI.js #

packages\create\lib\PromptModuleAPI.js

class PromptModuleAPI {
    constructor(creator) {
        this.creator = creator;
    }
    //插入特性
    injectFeature(feature) {
        this.creator.featurePrompt.choices.push(feature)
    }
    //插入选项
    injectPrompt(prompt) {
        this.creator.injectedPrompts.push(prompt)
    }
    //选择完成后的回调
    onPromptComplete(cb) {
        this.creator.promptCompleteCbs.push(cb)
    }
}
module.exports = PromptModuleAPI;

6.2 Creator.js #

packages\create\lib\Creator.js

const { prompt } = require("inquirer");
const PromptModuleAPI = require("./PromptModuleAPI");
const defaultFeaturePrompt = {
    name: "features",
    type: "checkbox",
    message: "请选择项目特性:",
    choices: [],
}
class Creator {
    constructor(projectName, projectDir, promptModules) {
        this.projectName = projectName;//项目名称
        this.projectDir = projectDir;//项目路径
        this.featurePrompt = defaultFeaturePrompt;//默认选项框
        this.injectedPrompts = [];//插入插入的选择框
        this.promptCompleteCbs = [];//选择结束之后的回调
        const promptModuleAPI = new PromptModuleAPI(this);
        promptModules.forEach((module) => module(promptModuleAPI));
    }
    async create() {
        //获取选择项
        const projectOptions = (this.projectOptions = await this.promptAndResolve());
        console.log('projectOptions',projectOptions);
        //{historyMode: 'browser',appTitle: 'AppTitle'}



    }
    async promptAndResolve() {
        let prompts = [this.featurePrompt, ...this.injectedPrompts];
        let answers = await prompt(prompts);
        let projectOptions = {plugins: {},};
        this.promptCompleteCbs.forEach((cb) => cb(answers, projectOptions));
        return projectOptions;
      }
}
module.exports = Creator;

6.3 create\index.js #

packages\create\index.js

const path = require("path");
const { red } = require("chalk");
const { config, log } = require("@vite100/utils");
const getPromptModules = require('./lib/getPromptModules');
+const Creator = require('./lib/Creator');
async function create(argv) {
    const { workingDirectory, projectName } = argv;
    const { GIT_TYPE, ORG_NAME } = config;
    if (!GIT_TYPE) {
        throw new Error(red("X") + " 尚未配置仓库类型!");
    }
    if (!ORG_NAME) {
        throw new Error(red("X") + " 尚未配置组织名称!");
    }
    const projectDir = path.join(workingDirectory, projectName);
    log.info("vite100", "创建的项目目录为%s", projectDir);
    let promptModules = getPromptModules();
    console.info("选择项promptModules", promptModules);
+   let creator = new Creator(projectName, projectDir, promptModules);
+   await creator.create();
}
module.exports = (...args) => {
    return create(...args).catch(err => {
        console.error(err);
    });
};

7. 准备项目目录 #

7.1 Creator.js #

packages\create\lib\Creator.js

const { prompt } = require("inquirer");
+const fs = require("fs-extra");
+const { red } = require("chalk");
const PromptModuleAPI = require("./PromptModuleAPI");
+const { log } = require("@vite100/utils");
const defaultFeaturePrompt = {
    name: "features",
    type: "checkbox",
    message: "请选择项目特性:",
    choices: [],
}
class Creator {
    constructor(projectName, projectDir, promptModules) {
        this.projectName = projectName;//项目名称
        this.projectDir = projectDir;//项目路径
        this.featurePrompt = defaultFeaturePrompt;//默认选项框
        this.injectedPrompts = [];//插入插入的选择框
        this.promptCompleteCbs = [];//选择结束之后的回调
        const promptModuleAPI = new PromptModuleAPI(this);
        promptModules.forEach((module) => module(promptModuleAPI));
    }
    async create() {
        //获取选择项
        const projectOptions = (this.projectOptions = await this.promptAndResolve());
        console.log('projectOptions', projectOptions);
        //{historyMode: 'browser',appTitle: 'AppTitle'}
+       //准备项目目录
+       await this.prepareProjectDir();
    }
+   async prepareProjectDir() {
+       let { projectDir } = this;
+       try {
+           await fs.access(projectDir);
+           const files = await fs.readdir(projectDir);
+           if (files.length > 0) {
+               const { overwrite } = await prompt({
+                   type: "confirm",
+                   name: "overwrite",
+                   message: `目标目录非空，是否要移除存在的文件并继续?`,
+               });
+               if (overwrite) {
+                   await fs.emptyDir(projectDir);
+               } else {
+                   throw new Error(red("X") + " 操作被取消");
+               }
+           }
+       } catch (error) {
+           await fs.mkdirp(projectDir);
+       }
+       log.info("vite100", "%s目录已经准备就绪", projectDir);
+   }
    async promptAndResolve() {
        let prompts = [this.featurePrompt, ...this.injectedPrompts];
        let answers = await prompt(prompts);
        let projectOptions = { plugins: {}, };
        this.promptCompleteCbs.forEach((cb) => cb(answers, projectOptions));
        return projectOptions;
    }
}
module.exports = Creator;

8. 下载模板 #

8.1 request.js #

packages\utils\request.js

const axios = require("axios");
const { GIT_TYPE } = require("./config");
const GITEE = "https://gitee.com/api/v5";
const GITHUB = "https://api.github.com";

const BASE_URL = GIT_TYPE === "gitee" ? GITEE : GITHUB;
const request = axios.create({
    baseURL: BASE_URL,
    timeout: 5000,
});

request.interceptors.response.use(
    (response) => {
        return response.data;
    },
    (error) => {
        return Promise.reject(error);
    }
);

module.exports = request;

8.2 withLoading.js #

packages\utils\withLoading.js

async function withLoading(message, fn, ...args) {
  const ora = await import("ora");
  const spinner = ora.default(message);
  spinner.start();
  const result = await fn(...args);
  spinner.succeed();
  return result;
}
module.exports = withLoading;

8.3 utils\index.js #

packages\utils\index.js

exports.log = require('./log');
exports.executeNodeScript = require('./executeNodeScript');
exports.config = require('./config');
+exports.withLoading = require('./withLoading');
+exports.request = require('./request');

8.4 settings\index.js #

packages\settings\index.js

//执行命令脚本
exports.COMMAND_SOURCE = `
const args = JSON.parse(process.argv[1]);
const factory = require('.');
factory(args);
`
//配置文件名称
exports.RC_NAME = ".vite100rc";

+//模板存放名称
+exports.TEMPLATES = ".vite100_templates";

8.5 Creator.js #

packages\create\lib\Creator.js

const { prompt } = require("inquirer");
const fs = require("fs-extra");
const { red } = require("chalk");
+const userhome = require("userhome");
+const {promisify} = require('util');
+const clone = promisify(require('clone-git-repo'));
const PromptModuleAPI = require("./PromptModuleAPI");
+const { log,config,withLoading ,request} = require("@vite100/utils");
+const { TEMPLATES } = require("@vite100/settings");
const defaultFeaturePrompt = {
    name: "features",
    type: "checkbox",
    message: "请选择项目特性:",
    choices: [],
}
class Creator {
    constructor(projectName, projectDir, promptModules) {
        this.projectName = projectName;//项目名称
        this.projectDir = projectDir;//项目路径
        this.featurePrompt = defaultFeaturePrompt;//默认选项框
        this.injectedPrompts = [];//插入插入的选择框
        this.promptCompleteCbs = [];//选择结束之后的回调
        const promptModuleAPI = new PromptModuleAPI(this);
        promptModules.forEach((module) => module(promptModuleAPI));
    }
    async create() {
        //获取选择项
        const projectOptions = (this.projectOptions = await this.promptAndResolve());
        console.log('projectOptions', projectOptions);
        //{historyMode: 'browser',appTitle: 'AppTitle'}
        //准备项目目录
        await this.prepareProjectDir();
+       //下载模板，给templateDir赋值
+       await this.downloadTemplate();
    }
+    async downloadTemplate() {
+        const { GIT_TYPE, ORG_NAME } = config;
+        let repos = await withLoading("读取模板列表", async () =>
+            request.get(`/orgs/${ORG_NAME}/repos`)
+        );
+        let { repo } = await prompt({
+            name: "repo",
+            type: "list",
+            message: "请选择模板",
+            choices: repos.map((repo) => repo.name)
+        });
+        let tags = await withLoading("读取标签列表", async () =>
+            request.get(`/repos/${ORG_NAME}/${repo}/tags`)
+        );
+        let { tag } = await prompt({
+            name: "tag",
+            type: "list",
+            message: "请选择版本",
+            choices: tags,
+        });
+        let repository = GIT_TYPE + `:${ORG_NAME}/${repo}`;
+        if (tag) repository += `#${tag}`;
+        const downloadDirectory = userhome(TEMPLATES);
+        let templateDir = (this.templateDir = `${downloadDirectory}/${repo}/${tag}`);
+        log.info("vite3", "准备下载模板到%s", templateDir);
+        try {
+            await fs.access(templateDir);
+        } catch (error) {
+            log.info("vite100", "从仓库下载%s", repository);
+            await clone(repository, templateDir, { clone: true });
+        }
+    }
    async prepareProjectDir() {
        let { projectDir } = this;
        try {
            await fs.access(projectDir);
            const files = await fs.readdir(projectDir);
            if (files.length > 0) {
                const { overwrite } = await prompt({
                    type: "confirm",
                    name: "overwrite",
                    message: `目标目录非空，是否要移除存在的文件并继续?`,
                });
                if (overwrite) {
                    await fs.emptyDir(projectDir);
                } else {
                    throw new Error(red("X") + " 操作被取消");
                }
            }
        } catch (error) {
            await fs.mkdirp(projectDir);
        }
        log.info("vite100", "%s目录已经准备就绪", projectDir);
    }
    async promptAndResolve() {
        let prompts = [this.featurePrompt, ...this.injectedPrompts];
        let answers = await prompt(prompts);
        let projectOptions = { plugins: {}, };
        this.promptCompleteCbs.forEach((cb) => cb(answers, projectOptions));
        return projectOptions;
    }
}
module.exports = Creator;

9.启动项目 #

9.1 Creator.js #

packages\create\lib\Creator.js

const { prompt } = require("inquirer");
const fs = require("fs-extra");
const { red } = require("chalk");
const userhome = require("userhome");
const {promisify} = require('util');
+const execa = require("execa");
const clone = promisify(require('clone-git-repo'));
const PromptModuleAPI = require("./PromptModuleAPI");
const { log,config,withLoading ,request} = require("@vite100/utils");
const { TEMPLATES } = require("@vite100/settings");
const defaultFeaturePrompt = {
    name: "features",
    type: "checkbox",
    message: "请选择项目特性:",
    choices: [],
}
class Creator {
    constructor(projectName, projectDir, promptModules) {
        this.projectName = projectName;//项目名称
        this.projectDir = projectDir;//项目路径
        this.featurePrompt = defaultFeaturePrompt;//默认选项框
        this.injectedPrompts = [];//插入插入的选择框
        this.promptCompleteCbs = [];//选择结束之后的回调
        const promptModuleAPI = new PromptModuleAPI(this);
        promptModules.forEach((module) => module(promptModuleAPI));
    }
    async create() {
        //获取选择项
        const projectOptions = (this.projectOptions = await this.promptAndResolve());
        console.log('projectOptions', projectOptions);
        //{historyMode: 'browser',appTitle: 'AppTitle'}
        //准备项目目录
        await this.prepareProjectDir();
        //下载模板，给templateDir赋值
        await this.downloadTemplate();
         //把项目拷贝到模板中
+       await fs.copy(this.templateDir, this.projectDir);
+        //初始化git仓库
+       await execa("git", ["init"], { cwd: this.projectDir, stdio: "inherit" });
+       log.info("vite100", "在%s安装依赖", this.projectDir);
+       await execa("npm", ["install"], { cwd: this.projectDir, stdio: "inherit" });
    }
    async downloadTemplate() {
        const { GIT_TYPE, ORG_NAME } = config;
        let repos = await withLoading("读取模板列表", async () =>
            request.get(`/orgs/${ORG_NAME}/repos`)
        );
        let { repo } = await prompt({
            name: "repo",
            type: "list",
            message: "请选择模板",
            choices: repos.map((repo) => repo.name)
        });
        let tags = await withLoading("读取标签列表", async () =>
            request.get(`/repos/${ORG_NAME}/${repo}/tags`)
        );
        let { tag } = await prompt({
            name: "tag",
            type: "list",
            message: "请选择版本",
            choices: tags,
        });
        let repository = GIT_TYPE + `:${ORG_NAME}/${repo}`;
        if (tag) repository += `#${tag}`;
        const downloadDirectory = userhome(TEMPLATES);
        let templateDir = (this.templateDir = `${downloadDirectory}/${repo}/${tag}`);
        log.info("vite3", "准备下载模板到%s", templateDir);
        try {
            await fs.access(templateDir);
        } catch (error) {
            log.info("vite100", "从仓库下载%s", repository);
            await clone(repository, templateDir, { clone: true });
        }
    }
    async prepareProjectDir() {
        let { projectDir } = this;
        try {
            await fs.access(projectDir);
            const files = await fs.readdir(projectDir);
            if (files.length > 0) {
                const { overwrite } = await prompt({
                    type: "confirm",
                    name: "overwrite",
                    message: `目标目录非空，是否要移除存在的文件并继续?`,
                });
                if (overwrite) {
                    await fs.emptyDir(projectDir);
                } else {
                    throw new Error(red("X") + " 操作被取消");
                }
            }
        } catch (error) {
            await fs.mkdirp(projectDir);
        }
        log.info("vite100", "%s目录已经准备就绪", projectDir);
    }
    async promptAndResolve() {
        let prompts = [this.featurePrompt, ...this.injectedPrompts];
        let answers = await prompt(prompts);
        let projectOptions = { plugins: {}, };
        this.promptCompleteCbs.forEach((cb) => cb(answers, projectOptions));
        return projectOptions;
    }
}
module.exports = Creator;

9.2 create\index.js #

packages\create\index.js

const path = require("path");
const { red } = require("chalk");
+const execa = require("execa");
const { config, log } = require("@vite100/utils");
const getPromptModules = require('./lib/getPromptModules');
const Creator = require('./lib/Creator');
async function create(argv) {
    const { workingDirectory, projectName } = argv;
    const { GIT_TYPE, ORG_NAME } = config;
    if (!GIT_TYPE) {
        throw new Error(red("X") + " 尚未配置仓库类型!");
    }
    if (!ORG_NAME) {
        throw new Error(red("X") + " 尚未配置组织名称!");
    }
    const projectDir = path.join(workingDirectory, projectName);
    log.info("vite100", "创建的项目目录为%s", projectDir);
    let promptModules = getPromptModules();
    console.info("选择项promptModules", promptModules);
    let creator = new Creator(projectName, projectDir, promptModules);
    await creator.create();
+   log.info("vite100", "启动服务");
+   await execa("npm", ["run", "dev"], { cwd: projectDir, stdio: "inherit" });
}
module.exports = (...args) => {
    return create(...args).catch(err => {
        console.error(err);
    });
};

10.添加路由插件 #

10.1 router.js #

packages\create\lib\promptModules\router.js

module.exports = cli => {
    cli.injectFeature({
        name: 'Router',
        value: 'router',
        description: '请选择路由模式',
        link: 'https://www.npmjs.com/package/react-router-dom'
    })
    cli.injectPrompt({
        name: 'historyMode',
        when: answers => answers.features.includes('router'),
        message: '请选择history的模式',
        type: 'list',
        choices: [
            {
                name: 'hash',
                value: 'hash'
            },
            {
                name: 'browser',
                value: 'browser'
            }
        ],
        default: 'browser'
    })
    cli.injectPrompt({
        name: 'appTitle',
        when: answers => answers.features.includes('router'),
        message: '请输入根组件的标题',
        type: 'text',
        default: 'AppTitle'
    })
    cli.onPromptComplete((answers, projectOptions) => {
        if (answers.features.includes('router')) {
+            projectOptions.plugins['cli-plugin-router'] = {
+                historyMode: answers.historyMode
+            }
            projectOptions.historyMode =answers.historyMode;
            projectOptions.appTitle=answers.appTitle;
        }
    })
}

10.2 Creator.js #

packages\create\lib\Creator.js

const { prompt } = require("inquirer");
+const path = require("path");
const fs = require("fs-extra");
const { red } = require("chalk");
const userhome = require("userhome");
const {promisify} = require('util');
const execa = require("execa");
const clone = promisify(require('clone-git-repo'));
const PromptModuleAPI = require("./PromptModuleAPI");
const { log,config,withLoading ,request} = require("@vite100/utils");
const { TEMPLATES } = require("@vite100/settings");
const defaultFeaturePrompt = {
    name: "features",
    type: "checkbox",
    message: "请选择项目特性:",
    choices: [],
}
class Creator {
    constructor(projectName, projectDir, promptModules) {
        this.projectName = projectName;//项目名称
        this.projectDir = projectDir;//项目路径
        this.featurePrompt = defaultFeaturePrompt;//默认选项框
        this.injectedPrompts = [];//插入插入的选择框
        this.promptCompleteCbs = [];//选择结束之后的回调
+       this.plugins = [];//插件
        const promptModuleAPI = new PromptModuleAPI(this);
        promptModules.forEach((module) => module(promptModuleAPI));
    }
    async create() {
        //获取选择项
        const projectOptions = (this.projectOptions = await this.promptAndResolve());
        console.log('projectOptions', projectOptions);
        //{historyMode: 'browser',appTitle: 'AppTitle'}
        //准备项目目录
        await this.prepareProjectDir();
        //下载模板，给templateDir赋值
        await this.downloadTemplate();
         //把项目拷贝到模板中
        await fs.copy(this.templateDir, this.projectDir);
+       const pkgPath = path.join(this.projectDir, 'package.json');
+       let pkg = (this.pkg = await fs.readJSON(pkgPath));
+       const deps = Reflect.ownKeys(projectOptions.plugins);
+       deps.forEach(dep => pkg.devDependencies[dep] = `latest`);
+       await fs.writeJSON(pkgPath,pkg,{spaces:2});
         //初始化git仓库
        await execa("git", ["init"], { cwd: this.projectDir, stdio: "inherit" });
        log.info("vite100", "在%s安装依赖", this.projectDir);
        await execa("npm", ["install"], { cwd: this.projectDir, stdio: "inherit" });

    }
    async downloadTemplate() {
        const { GIT_TYPE, ORG_NAME } = config;
        let repos = await withLoading("读取模板列表", async () =>
            request.get(`/orgs/${ORG_NAME}/repos`)
        );
        let { repo } = await prompt({
            name: "repo",
            type: "list",
            message: "请选择模板",
            choices: repos.map((repo) => repo.name)
        });
        let tags = await withLoading("读取标签列表", async () =>
            request.get(`/repos/${ORG_NAME}/${repo}/tags`)
        );
        let { tag } = await prompt({
            name: "tag",
            type: "list",
            message: "请选择版本",
            choices: tags,
        });
        let repository = GIT_TYPE + `:${ORG_NAME}/${repo}`;
        if (tag) repository += `#${tag}`;
        const downloadDirectory = userhome(TEMPLATES);
        let templateDir = (this.templateDir = `${downloadDirectory}/${repo}/${tag}`);
        log.info("vite3", "准备下载模板到%s", templateDir);
        try {
            await fs.access(templateDir);
        } catch (error) {
            log.info("vite100", "从仓库下载%s", repository);
            await clone(repository, templateDir, { clone: true });
        }
    }
    async prepareProjectDir() {
        let { projectDir } = this;
        try {
            await fs.access(projectDir);
            const files = await fs.readdir(projectDir);
            if (files.length > 0) {
                const { overwrite } = await prompt({
                    type: "confirm",
                    name: "overwrite",
                    message: `目标目录非空，是否要移除存在的文件并继续?`,
                });
                if (overwrite) {
                    await fs.emptyDir(projectDir);
                } else {
                    throw new Error(red("X") + " 操作被取消");
                }
            }
        } catch (error) {
            await fs.mkdirp(projectDir);
        }
        log.info("vite100", "%s目录已经准备就绪", projectDir);
    }
    async promptAndResolve() {
        let prompts = [this.featurePrompt, ...this.injectedPrompts];
        let answers = await prompt(prompts);
        let projectOptions = { plugins: {}, };
        this.promptCompleteCbs.forEach((cb) => cb(answers, projectOptions));
        return projectOptions;
    }
}
module.exports = Creator;

11. 解析并应用插件 #

11.1 mergeDeps.js #

packages\utils\mergeDeps.js

function mergeDeps(sourceDeps, depsToInject){
    let result = Object.assign({}, sourceDeps);
    for (const depName in depsToInject) {
        result[depName] = depsToInject[depName];
    }
    return result;
}
module.exports = mergeDeps;

11.2 loadModule.js #

packages\utils\loadModule.js

const path = require('path');
const Module = require('module');
function loadModule(request,context){
  return Module.createRequire(path.resolve(context,'package.json'))(request);
}
module.exports = loadModule;

11.3 extractCallDir.js #

packages\utils\extractCallDir.js

const path = require('path');
function extractCallDir(){
    const obj = {}
    Error.captureStackTrace(obj)
    const callSite = obj.stack.split('\n')[3]
    const namedStackRegExp = /\s\((.*):\d+:\d+\)$/
    let matchResult = callSite.match(namedStackRegExp)
    const fileName = matchResult[1]
    return path.dirname(fileName)
}
module.exports = extractCallDir;

11.4 writeFileTree.js #

packages\utils\writeFileTree.js

const path = require('path');
const fs = require('fs-extra');
async function writeFileTree(projectDir, files) {
    Object.keys(files).forEach(file => {
        let content = files[file];
        if (file.endsWith('.ejs')) file = file.slice(0, -4);
        const filePath = path.join(projectDir, file);
        fs.ensureDirSync(path.dirname(filePath));//先确保文件所在的目录 是存在
        fs.writeFileSync(filePath,content);
    });
}

module.exports = writeFileTree;

11.5 utils\index.js #

packages\utils\index.js

+const path = require('path');
exports.log = require('./log');
exports.executeNodeScript = require('./executeNodeScript');
exports.config = require('./config');
exports.withLoading = require('./withLoading');
exports.request = require('./request');
+exports.loadModule = require('./loadModule');
+exports.mergeDeps = require('./mergeDeps');
+exports.extractCallDir = require('./extractCallDir');
+exports.writeFileTree = require('./writeFileTree');
+exports.isObject = val => typeof val === 'object';
+exports.isString = val => typeof val === 'string';

11.6 GeneratorAPI.js #

packages\create\lib\GeneratorAPI.js

const fs = require('fs');
const ejs = require('ejs');
const path = require('path');
const { promisify } = require('util');
const glob = promisify(require('glob'));
const { isBinaryFile } = require('isbinaryfile');
const { runTransformation } = require('vue-codemod')
const { isObject, isString, extractCallDir, mergeDeps } = require("@vite100/utils");
class GeneratorAPI {
    constructor(id, creator, projectOptions) {
        this.id = id;
        this.creator = creator;
        this.projectOptions = projectOptions;
    }
    //插入文件处理中间件
    async _injectFileMiddleware(middleware) {
        this.creator.fileMiddlewares.push(middleware);
    }
    //渲染拷贝文件
    render(source) {
        const baseDir = extractCallDir();
        if (isString(source)) {
            source = path.resolve(baseDir, source)
            this._injectFileMiddleware(async (files, projectOptions) => {
                const templateFiles = await glob('**/*', { cwd: source, nodir: true });
                for (let i = 0; i < templateFiles.length; i++) {
                    let templateFile = templateFiles[i];
                    files[templateFile] = await renderFile(path.resolve(source, templateFile), projectOptions);
                }
            });
        }
    }
    //扩展依赖包
    extendPackage(toMerge) {
        const pkg = this.creator.pkg;
        for (const key in toMerge) {
            const value = toMerge[key];
            let existing = pkg[key];
            if (isObject(value) && (key === 'dependencies' || key === 'devDependencies')) {
                pkg[key] = mergeDeps(existing || {}, value);
            } else {
                pkg[key] = value;
            }
        }
    }
    //转译脚本
    transformScript(file, codemod, projectOptions = {}) {
        this._injectFileMiddleware((files) => {
            files[file] = runTransformation(
                {
                    path: file,
                    source: files[file]
                },
                codemod,
                projectOptions
            )
        })
    }
    //插入导入语句
    injectImport(file, newImport) {
        const imports = (this.creator.imports[file] = this.creator.imports[file] || []);
        imports.push(newImport)
    }
    //入口文件的路径
    get entryFile() {
        return 'src/index.js';
    }
}
//渲染文件
async function renderFile(templatePath, projectOptions) {
    if (await isBinaryFile(templatePath)) {
        return fs.readFileSync(templatePath);
    }
    let template = fs.readFileSync(templatePath, 'utf8');
    return ejs.render(template, projectOptions);
}

module.exports = GeneratorAPI;

11.7 injectImports.js #

packages\create\lib\codemods\injectImports.js

function injectImports(fileInfo, api, { imports }) {
    const jscodeshift = api.jscodeshift
    const root = jscodeshift(fileInfo.source)
    const declarations = root.find(jscodeshift.ImportDeclaration)
    const toImportAST = imp => jscodeshift(`${imp}\n`).nodes()[0].program.body[0]
    const importASTNodes = imports.map(toImportAST);
    if (declarations.length) {
        declarations.at(-1).insertAfter(importASTNodes)
    } else {
        root.get().node.program.body.unshift(...importASTNodes)
    }
    return root.toSource()
}

module.exports = injectImports;

11.8 Creator.js #

packages\create\lib\Creator.js

const { prompt } = require("inquirer");
const path = require("path");
const fs = require("fs-extra");
const { red } = require("chalk");
const userhome = require("userhome");
const {promisify} = require('util');
const execa = require("execa");
+const glob = promisify(require('glob'));
const clone = promisify(require('clone-git-repo'));
+const { runTransformation } = require('vue-codemod')
const PromptModuleAPI = require("./PromptModuleAPI");
+const GeneratorAPI = require('./GeneratorAPI');
+const { isBinaryFile } = require('isbinaryfile');
+const { log,config,withLoading ,request,loadModule,writeFileTree} = require("@vite100/utils");
const { TEMPLATES } = require("@vite100/settings");
const defaultFeaturePrompt = {
    name: "features",
    type: "checkbox",
    message: "请选择项目特性:",
    choices: [],
}
class Creator {
    constructor(projectName, projectDir, promptModules) {
        this.projectName = projectName;//项目名称
        this.projectDir = projectDir;//项目路径
        this.featurePrompt = defaultFeaturePrompt;//默认选项框
        this.injectedPrompts = [];//插入插入的选择框
        this.promptCompleteCbs = [];//选择结束之后的回调
        this.plugins = [];//插件
+       this.fileMiddlewares = [];//文件中间件
+       this.files = {};//最终输出的文件列表
+       this.pkg = {};//我描述内容
+       this.imports={};//额外的导入语句
        const promptModuleAPI = new PromptModuleAPI(this);
        promptModules.forEach((module) => module(promptModuleAPI));
    }
    async create() {
        //获取选择项
        const projectOptions = (this.projectOptions = await this.promptAndResolve());
        console.log('projectOptions', projectOptions);
        //{historyMode: 'browser',appTitle: 'AppTitle'}
        //准备项目目录
        await this.prepareProjectDir();
        //下载模板，给templateDir赋值
        await this.downloadTemplate();
         //把项目拷贝到模板中
        await fs.copy(this.templateDir, this.projectDir);
        const pkgPath = path.join(this.projectDir, 'package.json');
        let pkg = (this.pkg = await fs.readJSON(pkgPath));
        const deps = Reflect.ownKeys(projectOptions.plugins);
        deps.forEach(dep => pkg.devDependencies[dep] = `latest`);
        await fs.writeJSON(pkgPath,pkg,{spaces:2});
         //初始化git仓库
        await execa("git", ["init"], { cwd: this.projectDir, stdio: "inherit" });
        log.info("vite100", "在%s安装依赖", this.projectDir);
        await execa("npm", ["install"], { cwd: this.projectDir, stdio: "inherit" });
+       //解析插件,拿到插件的generator方法
+       const resolvedPlugins = await this.resolvePlugins(projectOptions.plugins);
+       //应用插件
+       await this.applyPlugins(resolvedPlugins);
+       await this.initFiles();
+       //准备文件内容
+       await this.renderFiles();
+       //删除插件的依赖
+       deps.forEach(dep =>  delete pkg.devDependencies[dep]);
+       this.files['package.json'] = JSON.stringify(pkg,null,2);
+       //把文件写入硬盘
+       await writeFileTree(this.projectDir, this.files);
+       //重新安装额外的依赖
+       await execa("npm", ["install"], { cwd: this.projectDir, stdio: "inherit" });
    }
+   async initFiles(){
+       const projectFiles = await glob('**/*', { cwd: this.projectDir, nodir: true });
+       for (let i = 0; i < projectFiles.length; i++) {
+           let projectFile = projectFiles[i];
+           let projectFilePath = path.join(this.projectDir,projectFile);
+           let content;
+           if (await isBinaryFile(projectFilePath)) {
+               content =  await fs.readFile(projectFilePath);
+           }else{
+               content =  await fs.readFile(projectFilePath,'utf8');
+           }
+           this.files[projectFile] = content;
+       }
+   }
+    async renderFiles() {
+        const {files,projectOptions} = this;
+        for (const middleware of this.fileMiddlewares) {
+          await middleware(files,projectOptions);
+        }
+        Object.keys(files).forEach(file => {
+          let imports = this.imports[file]
+          if (imports && imports.length > 0) {
+            files[file] = runTransformation(
+              { path: file, source: files[file] },
+              require('./codemods/injectImports'),
+              { imports }
+            )
+          }
+        })
+      }
+    async resolvePlugins(rawPlugins) {
+        const plugins = [];
+        for (const id of Reflect.ownKeys(rawPlugins)) {
+          const apply = loadModule(`${id}/generator`, this.projectDir);
+          let options = rawPlugins[id];
+          plugins.push({ id, apply, options });
+        }
+        return plugins;
+    }
+    async applyPlugins(plugins) {
+        for (const plugin of plugins) {
+          const { id, apply, options } = plugin;
+          const generatorAPI = new GeneratorAPI(id, this, options);
+          await apply(generatorAPI, options);
+        }
+      }
    async downloadTemplate() {
        const { GIT_TYPE, ORG_NAME } = config;
        let repos = await withLoading("读取模板列表", async () =>
            request.get(`/orgs/${ORG_NAME}/repos`)
        );
        let { repo } = await prompt({
            name: "repo",
            type: "list",
            message: "请选择模板",
            choices: repos.map((repo) => repo.name)
        });
        let tags = await withLoading("读取标签列表", async () =>
            request.get(`/repos/${ORG_NAME}/${repo}/tags`)
        );
        let { tag } = await prompt({
            name: "tag",
            type: "list",
            message: "请选择版本",
            choices: tags,
        });
        let repository = GIT_TYPE + `:${ORG_NAME}/${repo}`;
        if (tag) repository += `#${tag}`;
        const downloadDirectory = userhome(TEMPLATES);
        let templateDir = (this.templateDir = `${downloadDirectory}/${repo}/${tag}`);
        log.info("vite3", "准备下载模板到%s", templateDir);
        try {
            await fs.access(templateDir);
        } catch (error) {
            log.info("vite100", "从仓库下载%s", repository);
            await clone(repository, templateDir, { clone: true });
        }
    }
    async prepareProjectDir() {
        let { projectDir } = this;
        try {
            await fs.access(projectDir);
            const files = await fs.readdir(projectDir);
            if (files.length > 0) {
                const { overwrite } = await prompt({
                    type: "confirm",
                    name: "overwrite",
                    message: `目标目录非空，是否要移除存在的文件并继续?`,
                });
                if (overwrite) {
                    await fs.emptyDir(projectDir);
                } else {
                    throw new Error(red("X") + " 操作被取消");
                }
            }
        } catch (error) {
            await fs.mkdirp(projectDir);
        }
        log.info("vite100", "%s目录已经准备就绪", projectDir);
    }
    async promptAndResolve() {
        let prompts = [this.featurePrompt, ...this.injectedPrompts];
        let answers = await prompt(prompts);
        let projectOptions = { plugins: {}, };
        this.promptCompleteCbs.forEach((cb) => cb(answers, projectOptions));
        return projectOptions;
    }
}
module.exports = Creator;

12. 实现插件 #

12.1 App.js.ejs #

packages\cli-plugin-router\template\src\App.js.ejs

import React from 'react';
function App(){
    return <div><%=appTitle%></div>
}
export default App;

12.2 routesConfig.js #

packages\cli-plugin-router\template\src\routesConfig.js

import App from './App';
export default [
    {
        path: '/',
        component: App
    }
]

12.3 generator.js #

packages\cli-plugin-router\generator.js

module.exports = async (api, options) => {
    api.render('./template');
    api.injectImport(api.entryFile,
        `import {${options.historyMode === 'hash' ? 'HashRouter' : 'BrowserRouter'} as Router,Route} from 'react-router-dom'`);
    api.injectImport(api.entryFile,
        `import routesConfig from './routesConfig'`);
    api.injectImport(api.entryFile,
        `import { renderRoutes } from "react-router-config"`);
    api.transformScript(api.entryFile, require('./injectRouter'))
    api.extendPackage({
        dependencies: {
            'react-router-dom': 'latest',
            'react-router-config': 'latest'
        }
    });
}

12.4 injectRouter.js #

packages\cli-plugin-router\injectRouter.js

module.exports = (file, api) => {
    const jscodeshift = api.jscodeshift
    const root = jscodeshift(file.source)
    const appImportDeclaration = root.find(jscodeshift.ImportDeclaration, (node) => {
        if(node.specifiers[0].local.name === 'App'){
            return true
        }
    })
    if(appImportDeclaration)
        appImportDeclaration.remove();

    const appJSXElement = root.find(jscodeshift.JSXElement, (node) => {
        if (node.openingElement.name.name === 'App') {
            return true
        }
    })
    if(appJSXElement)
     appJSXElement.replaceWith(({ node }) => {
         return jscodeshift.jsxElement(
            jscodeshift.jsxOpeningElement(jscodeshift.jsxIdentifier('Router')), jscodeshift.jsxClosingElement(jscodeshift.jsxIdentifier('Router')), [
                jscodeshift.jsxExpressionContainer(
                    jscodeshift.callExpression(jscodeshift.identifier('renderRoutes'),[jscodeshift.identifier('routesConfig')])
                )
            ], false
         );
    })
    return root.toSource()
}

13.发布 #

13.1 创建组织 #

13.2 发布 #

package.json

{
  "publishConfig": {
    "access": "public",
    "registry": "http://registry.npmjs.org"
  }
}

npm whoami
npm login
zhangrenyang2000
lerna publish

14.参考 #

14.1 lerna #

命令 功能
lerna bootstrap 安装依赖
lerna clean 删除各个包下的node_modules
lerna init 创建新的lerna库
lerna list 查看本地包列表
lerna changed 显示自上次release tag以来有修改的包， 选项通 list
lerna diff 显示自上次release tag以来有修改的包的差异， 执行 git diff
lerna exec 在每个包目录下执行任意命令
lerna run 执行每个包package.json中的脚本命令
lerna add 添加一个包的版本为各个包的依赖
lerna import 引入package
lerna link 链接互相引用的库
lerna create 新建package
lerna publish 发布

14.3 yarn #

命令 说明
yarn -v 查看yarn版本
yarn config list 查看yarn的所有配置
yarn config set registry https://registry.npm.taobao.org/ 修改yarn的源镜像为淘宝源
yarn config set global-folder "D:\RTE\Yarn\global" 修改全局安装目录, 先创建好目录(global), 我放在了Yarn安装目录下(D:\RTE\Yarn\global)
yarn config set prefix "D:\RTE\Yarn\global\" 修改全局安装目录的bin目录位置
yarn config set cache-folder "D:\RTE\Yarn\cache" 修改全局缓存目录, 先创建好目录(cache), 和global放在同一层目录下
yarn config list 查看所有配置
yarn global bin 查看当前yarn的bin的位置
yarn global dir 查看当前yarn的全局安装位置

14.4 workspace #

作用 命令
查看工作空间信息 yarn workspaces info
给所有的空间添加依赖 yarn workspaces run add lodash
给根空间添加依赖 yarn add -W -D typescript jest
给某个项目添加依赖 yarn workspace create-react-app3 add commander
删除所有的 node_modules lerna clean 等于 yarn workspaces run clean
安装和link所有的名 yarn install 等于 lerna bootstrap --npm-client yarn --use-workspaces
重新获取所有的 node_modules yarn install --force
查看缓存目录 yarn cache dir
清除本地缓存 yarn cache clean
在所有package中运行指定的命令 yarn workspaces run

14.3 yargs # 

const yargs = require("yargs/yargs");
const cli = yargs();
cli
    .usage(`Usage: vite100 <command> [options]`)
    .demandCommand(1, "至少需要一个命令")
    .strict()
    .recommendCommands()
    .command({
        command: "create <name>",
        describe: "创建项目",
        builder: (yargs) => {
            yargs.positional("name", {
                type: "string",
                describe: "项目名称",
            });
        },
        handler: async function (argv) {
           console.log(argv);
           //{ _: [ 'create' ], '$0': 'doc\\1.yargs.js', name: 'p1' }
        }
    })
    .parse(process.argv.slice(2));

14.5 node -e # 

node -e "console.log(process.argv)" -- a b
node -e "console.log(JSON.parse(process.argv[1]))" -- "{\"name\":\"zhufeng\"}"
node -e "console.log(process.cwd())"

const spawn = require("cross-spawn");
async function executeNodeScript({ cwd }, source, args) {
    return new Promise((resolve) => {
      const childProcess = spawn(
        process.execPath,
        ["-e", source, "--", JSON.stringify(args)],
        { cwd, stdio: "inherit" }
      );
      childProcess.on("close", resolve);
    });
}
module.exports = executeNodeScript;

14.6 clone # 

const clone = require('clone-git-repo');
let repository = 'gitee:zhufengtemplate/template-react#v1.0';
clone(repository,'./output', {clone:true},function (err) {
    console.log(err);
})

14.7 jscodeshift # 

let jscodeshift = require('jscodeshift');
const ast =  jscodeshift(`import ReactDOM from "react-dom"`);
console.log(ast.nodes());
console.log(ast.nodes()[0]);
console.log(ast.nodes()[0].program);
console.log(ast.nodes()[0].program.body[0]);

14.8 vue-codemod # 

const { runTransformation } = require('vue-codemod')
let file = 'index.js';
let source = `
import React from 'react';
`;
let imports = ['import ReactDOM from "react-dom"'];
let transformed = runTransformation(
    { path: file, source },
    injectImports,
    { imports }
)
console.log(transformed);

function injectImports(fileInfo, api, { imports }) {
    const jscodeshift = api.jscodeshift
    const root = jscodeshift(fileInfo.source)
    const declarations = root.find(jscodeshift.ImportDeclaration)
    const toImportAST = imp => jscodeshift(`${imp}\n`).nodes()[0].program.body[0]
    const importASTNodes = imports.map(toImportAST);
    if (declarations.length) {
        declarations.at(-1).insertAfter(importASTNodes)
    } else {
        root.get().node.program.body.unshift(...importASTNodes)
    }
    return root.toSource()
}
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