使用npx create-react-app创建项目遇ERESOLVE及ENOENT错误求助

一、ERESOLVE依赖树冲突错误 #

执行npx create-react-app calc-app时出现如下错误：

Installing template dependencies using npm...
npm error code ERESOLVE
npm error ERESOLVE unable to resolve dependency tree
npm error
npm error While resolving: calc-app@0.1.0
npm error Found: react@19.0.0
npm error node_modules/react
npm error   react@"^19.0.0" from the root project
npm error
npm error Could not resolve dependency:
npm error peer react@"^18.0.0" from @testing-library/react@13.4.0
npm error node_modules/@testing-library/react
npm error   @testing-library/react@"^13.0.0" from the root project
npm error
npm error Fix the upstream dependency conflict, or retry
npm error this command with --force or --legacy-peer-deps
npm error to accept an incorrect (and potentially broken) dependency resolution.
npm error
npm error
npm error For a full report see:
npm error C:\Users\ariana\AppData\Local\npm-cache\_logs\2024-12-18T14_26_32_953Z-eresolve-report.txt
npm error A complete log of this run can be found in: C:\Users\ariana\AppData\Local\npm-cache\_logs\2024-12-18T14_26_32_953Z-debug-0.log
`npm install --no-audit --save @testing-library/jest-dom@^5.14.1 @testing-library/react@^13.0.0 @testing-library/user-event@^13.2.1 web-vitals@^2.1.0` failed

解决方法： #

• 方法1：使用--legacy-peer-deps参数创建项目
  npm 7及以上版本默认启用严格的peer依赖检查，添加该参数可恢复旧版npm的依赖解析逻辑，绕过冲突：

  npx create-react-app calc-app --legacy-peer-deps
  

• 方法2：手动指定兼容的React版本
  若不想使用旧版依赖解析，可指定React 18版本创建项目（@testing-library/react 13兼容React 18）：

  npx create-react-app calc-app --use-npm
  # 创建完成后进入项目目录，执行以下命令降级React版本
  npm install react@^18.2.0 react-dom@^18.2.0
  

二、ENOENT找不到package.json错误 #

执行npm install时出现如下错误：

npm error code ENOENT
npm error syscall open
npm error path C:\Users\ariana\Documents\Cursos\React\package.json
npm error errno -4058
npm error enoent Could not read package.json: Error: ENOENT: no such file or directory, open 'C:\Users\ariana\Documents\Cursos\React\package.json'
npm error enoent This is related to npm not being able to find a file.
npm error enoent
npm error A complete log of this run can be found in: C:\Users\ariana\AppData\Local\npm-cache\_logs\2024-12-18T14_30_41_989Z-debug-0.log

解决方法： #

错误原因是当前终端目录并非项目根目录（calc-app），而是上级的React文件夹，该目录下没有package.json。执行以下步骤：

1. 进入项目根目录：

   cd C:\Users\ariana\Documents\Cursos\React\calc-app
   

2. 再执行npm install即可。

内容的提问来源于stack exchange，提问作者Ari Di Matteo