Question

当尝试使用命令npx creat-react-app创建一个react.js应用时，我得到一些警告和错误消息

这是包含我得到的错误的终端输出。我也想指定在创建react.js应用时，无论这些错误是什么，它实际上都在工作。但我怕缺少一些东西。还安装了Node.js和所有必需的工具。

Node.js版本：LTS版本12.18.4（包括npm 6.14.6）

C:\Users\Administrator\Desktop\cmder
λ npx create-react-app my-app

Creating a new React app in C:\Users\Administrator\Desktop\cmder\my-app.

Installing packages. This might take a couple of minutes.
Installing react, react-dom, and react-scripts with cra-template...


> core-js@2.6.11 postinstall C:\Users\Administrator\Desktop\cmder\my-app\node_modules\babel-runtime\node_modules\core-js
> node -e "try{require('./postinstall')}catch(e){}"


> core-js@3.6.5 postinstall C:\Users\Administrator\Desktop\cmder\my-app\node_modules\core-js
> node -e "try{require('./postinstall')}catch(e){}"


> core-js-pure@3.6.5 postinstall C:\Users\Administrator\Desktop\cmder\my-app\node_modules\core-js-pure
> node -e "try{require('./postinstall')}catch(e){}"

+ react-dom@16.13.1
+ react-scripts@3.4.3
+ cra-template@1.0.3
+ react@16.13.1
added 1598 packages from 746 contributors and audited 1602 packages in 65.645s

69 packages are looking for funding
  run `npm fund` for details

found 0 vulnerabilities


Initialized a git repository.

Installing template dependencies using npm...
npm WARN tsutils@3.17.1 requires a peer of typescript@>=2.8.0 || >= 3.2.0-dev || >= 3.3.0-dev || >= 3.4.0-dev || >= 3.5.0-dev || >= 3.6.0-dev || >= 3.6.0-beta || >= 3.7.0-dev || >= 3.7.0-beta but none is installed. You must install peer dependencies yourself.
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@2.1.2 (node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@2.1.2: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.13 (node_modules\jest-haste-map\node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.13: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.13 (node_modules\watchpack-chokidar2\node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.13: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.13 (node_modules\webpack-dev-server\node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.13: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})

+ @testing-library/user-event@7.2.1
+ @testing-library/jest-dom@4.2.4
+ @testing-library/react@9.5.0
added 36 packages from 57 contributors and audited 1638 packages in 13.978s

69 packages are looking for funding
  run `npm fund` for details

found 0 vulnerabilities

Removing template package using npm...

npm WARN tsutils@3.17.1 requires a peer of typescript@>=2.8.0 || >= 3.2.0-dev || >= 3.3.0-dev || >= 3.4.0-dev || >= 3.5.0-dev || >= 3.6.0-dev || >= 3.6.0-beta || >= 3.7.0-dev || >= 3.7.0-beta but none is installed. You must install peer dependencies yourself.
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@2.1.2 (node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@2.1.2: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.13 (node_modules\jest-haste-map\node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.13: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.13 (node_modules\watchpack-chokidar2\node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.13: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.13 (node_modules\webpack-dev-server\node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.13: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})

removed 1 package and audited 1637 packages in 10.641s

69 packages are looking for funding
  run `npm fund` for details

found 0 vulnerabilities

Git commit not created Error: Command failed: git commit -m "Initialize project using Create React App"
    at checkExecSyncError (child_process.js:630:11)
    at execSync (child_process.js:666:15)
    at tryGitCommit (C:\Users\Administrator\Desktop\cmder\my-app\node_modules\react-scripts\scripts\init.js:62:5)
    at module.exports (C:\Users\Administrator\Desktop\cmder\my-app\node_modules\react-scripts\scripts\init.js:334:25)
    at [eval]:3:14
    at Script.runInThisContext (vm.js:120:18)
    at Object.runInThisContext (vm.js:309:38)
    at Object.<anonymous> ([eval]-wrapper:10:26)
    at Module._compile (internal/modules/cjs/loader.js:1137:30)
    at evalScript (internal/process/execution.js:94:25) {
  status: 128,
  signal: null,
  output: [ null, null, null ],
  pid: 1532,
  stdout: null,
  stderr: null
}
Removing .git directory...

Success! Created my-app at C:\Users\Administrator\Desktop\cmder\my-app
Inside that directory, you can run several commands:

  npm start
    Starts the development server.

  npm run build
    Bundles the app into static files for production.

  npm test
    Starts the test runner.

  npm run eject
    Removes this tool and copies build dependencies, configuration files
    and scripts into the app directory. If you do this, you can’t go back!

We suggest that you begin by typing:

  cd my-app
  npm start

Happy hacking!

Answer 1

未创建Git提交错误：命令失败：git commit -m “使用Create React App初始化项目”

好像没有安装git。如果要cra初始化git仓库，请安装git。如果您不打算使用git，则应该忽略该错误。

npm警告不要跳过跳过依赖项：fsevents@2.1.2不受支持的平台：通缉{“ os”：“ darwin”，“ arch”：“ any”}（当前：{“ os”：“ win32”，“ arch“：” x64“}）

这是mac（darwin）的可选依赖项

This thread指出您可以使用npm install --no-optional来防止发生警告。

npm WARN tsutils@3.17.1需要一个打字稿@@ = 2.8.0的同位体|| > = 3.2.0-dev || > = 3.3.0-dev || > = 3.4.0-dev || > = 3.5.0-dev || > = 3.6.0-dev || > = 3.6.0-beta || > = 3.7.0-dev || > = 3.7.0-beta，但未安装。您必须自己安装对等依赖项。

好像cra使用打字机，并要求您安装2.8.0以上版本的打字机。

npm i -g typescript

应该解决问题

React.js-使用“ npx create-react-app”命令时的警告和错误

1 个答案: