老师报这个错,怎么处理?项目运行不起来

来源:2-5 ES6,ES7,ES8学习指南-1

歌安_bmwBM0

2024-12-07

sh-3.2# npx react-native run-ios
Need to install the following packages:
react-native@0.76.4
Ok to proceed? (y) y

npm warn deprecated inflight@1.0.6: This module is not supported, and leaks memory. Do not use it. Check out lru-cache if you want a good and tested way to coalesce async requests by a key value, which is much more comprehensive and powerful.
npm warn deprecated @babel/plugin-proposal-nullish-coalescing-operator@7.18.6: This proposal has been merged to the ECMAScript standard and thus this plugin is no longer maintained. Please use @babel/plugin-transform-nullish-coalescing-operator instead.
npm warn deprecated @babel/plugin-proposal-class-properties@7.18.6: This proposal has been merged to the ECMAScript standard and thus this plugin is no longer maintained. Please use @babel/plugin-transform-class-properties instead.
npm warn deprecated rimraf@2.6.3: Rimraf versions prior to v4 are no longer supported
npm warn deprecated @babel/plugin-proposal-optional-chaining@7.21.0: This proposal has been merged to the ECMAScript standard and thus this plugin is no longer maintained. Please use @babel/plugin-transform-optional-chaining instead.
npm warn deprecated rimraf@3.0.2: Rimraf versions prior to v4 are no longer supported
npm warn deprecated glob@7.2.3: Glob versions prior to v9 are no longer supported
error: unknown command 'run-ios'
sh-3.2# 

写回答

2回答

CrazyCodeBoy

2024-12-09

1. 卸载全局安装的 react-native-cli

确保没有冲突的旧版本:

npm uninstall -g react-native-cli

2. 清理全局环境

清理可能影响依赖安装的全局缓存:

npm cache clean --force

3. 初始化项目并使用 npx

React Native 项目推荐直接使用 npx 初始化和运行:

npx react-native init MyProject
cd MyProject
npx react-native run-ios


---

处理依赖警告

升级过时依赖

以下是更新部分模块的命令:

npm install rimraf@latest
npm install glob@latest

如果 npx 仍然无法运行

你可以手动验证 Node.js 和 npm 的版本,确保它们符合要求:

Node.js:建议使用 LTS 版本(16.x 或 18.x)。

npm:建议使用 8.x 或以上版本。 验证命令:


node -v
npm -v

如果版本过低,请升级 Node.js 或使用工具如 nvm 安装适当版本。


---

检查 iOS 环境

1. 安装 CocoaPods

确认 CocoaPods 是否正确安装:

sudo gem install cocoapods
pod setup

2. 安装 iOS 依赖

进入项目的 ios 文件夹并运行:

cd ios
pod install

3. 运行 Xcode

如果仍有问题,可以手动打开项目的 .xcworkspace 文件,并尝试从 Xcode 运行项目。


---

如果问题依旧:

提供以下信息可以帮助进一步诊断:

1. 当前系统环境(macOS 版本、Node.js 和 npm 版本)。


2. 项目初始化方式及 React Native 版本。


3. npm install 和 npx 命令的完整输出。



这样我可以更具体地帮你解决问题!

0
0

CrazyCodeBoy

2024-12-07

这个错误提示表明你的 React Native 项目环境中有一些问题,具体原因可能包括:

错误分析:

1. React Native CLI 未安装或路径配置错误: 错误提示 unknown command 'run-ios' 表明你当前没有正确安装 React Native CLI,或者没有通过全局路径访问到它。


2. Node.js 依赖问题: 提示了一些过时的依赖包(例如 rimraf, glob, @babel/plugin-proposal-*),可能影响项目的运行。


3. npx 使用问题: 你尝试用 npx react-native run-ios,但这通常用于 React Native CLI 项目初始化。对于已初始化的项目,应确保 CLI 已安装。




---

解决方法:

1. 全局安装 React Native CLI: 确保 React Native CLI 已全局安装:

npm install -g react-native-cli

安装完成后,检查是否安装成功:

react-native --version


2. 清理项目依赖: 清理项目的依赖缓存,避免冲突:

rm -rf node_modules package-lock.json
npm cache clean --force
npm install


3. 运行命令正确性: 使用 React Native CLI 执行 iOS 模拟器:

react-native run-ios


4. 检查环境配置:

确保已安装 Xcode,并正确设置开发工具路径:

xcode-select --install

确认 Node.js 和 npm 版本满足 React Native 要求,推荐:

Node.js >= 16.x

npm >= 8.x


检查 CocoaPods 是否已安装并更新:

sudo gem install cocoapods
pod install --repo-update



5. 升级依赖: 修复警告中提到的过时包:

npm install @babel/plugin-transform-nullish-coalescing-operator
npm install @babel/plugin-transform-class-properties
npm install @babel/plugin-transform-optional-chaining
npm install rimraf@latest
npm install glob@latest




---

常见问题排查:

如果仍有 unknown command 'run-ios' 错误,请确保项目初始化正确:

npx react-native init MyProject
cd MyProject
npx react-native run-ios

确保 ios 文件夹下已正确生成 Xcode 项目文件,且 Podfile 正确安装依赖:

cd ios
pod install
cd ..


如果这些步骤后问题依然存在,请提供更多详细信息以进一步诊断。

0
1
歌安_bmwBM0
还是报这个,请教下老师 sh-3.2# npm install -g react-native-cli npm warn deprecated inflight@1.0.6: This module is not supported, and leaks memory. Do not use it. Check out lru-cache if you want a good and tested way to coalesce async requests by a key value, which is much more comprehensive and powerful. npm warn deprecated glob@7.2.3: Glob versions prior to v9 are no longer supported npm warn deprecated rimraf@2.7.1: Rimraf versions prior to v4 are no longer supported added 3 packages, removed 1 package, and changed 88 packages in 16s 41 packages are looking for funding run `npm fund` for details
2024-12-07
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