「React」You are running `create-react-app` 4.0.3, which is behindの解決方法

2022年9月6日

環境
Windows 10 Home 64bit
node v17.1.0
npm 8.1.2

エラー現象
You are running `create-react-app` 4.0.3, which is behind the latest release (5.0.1).

操作例

C:\study\skill\react>npx create-react-app reactsample

You are running `create-react-app` 4.0.3, which is behind the latest release (5.0.1).

We no longer support global installation of Create React App.

Please remove any global installs with one of the following commands:
- npm uninstall -g create-react-app
- yarn global remove create-react-app

The latest instructions for creating a new app can be found here:
https://create-react-app.dev/docs/getting-started/

npm notice
npm notice New minor version of npm available! 8.1.2 -> 8.19.1
npm notice Changelog: https://github.com/npm/cli/releases/tag/v8.19.1
npm notice Run npm install -g npm@8.19.1 to update!
npm notice

解決の対策
1.古いバージョン「create-react-app」をアンインストールします

C:\study\skill\react>npm uninstall -g create-react-app

removed 67 packages, and audited 1 package in 2s

found 0 vulnerabilities

2.npmのアップデートを行います

C:\study\skill\react>npm install -g npm@8.19.1 to update
npm WARN deprecated set-value@0.2.0: Critical bug fixed in v3.0.1, please upgrade to the latest version.
npm WARN deprecated set-value@0.4.3: Critical bug fixed in v3.0.1, please upgrade to the latest version.
npm WARN deprecated set-value@0.3.3: Critical bug fixed in v3.0.1, please upgrade to the latest version.
npm WARN deprecated set-value@0.3.3: Critical bug fixed in v3.0.1, please upgrade to the latest version.
npm WARN deprecated set-value@0.4.3: Critical bug fixed in v3.0.1, please upgrade to the latest version.
npm WARN deprecated set-value@0.3.3: Critical bug fixed in v3.0.1, please upgrade to the latest version.
npm WARN deprecated set-value@0.3.3: Critical bug fixed in v3.0.1, please upgrade to the latest version.
npm WARN deprecated set-value@0.4.3: Critical bug fixed in v3.0.1, please upgrade to the latest version.
npm WARN deprecated set-value@0.3.3: Critical bug fixed in v3.0.1, please upgrade to the latest version.
npm WARN deprecated set-value@0.3.3: Critical bug fixed in v3.0.1, please upgrade to the latest version.
npm WARN deprecated set-value@0.4.3: Critical bug fixed in v3.0.1, please upgrade to the latest version.
npm WARN deprecated set-value@0.4.3: Critical bug fixed in v3.0.1, please upgrade to the latest version.
npm WARN deprecated set-value@0.3.3: Critical bug fixed in v3.0.1, please upgrade to the latest version.

added 643 packages, and audited 670 packages in 3m

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

53 vulnerabilities (7 low, 3 moderate, 42 high, 1 critical)

To address issues that do not require attention, run:
  npm audit fix

To address all issues possible (including breaking changes), run:
  npm audit fix --force

Some issues need review, and may require choosing
a different dependency.

Run `npm audit` for details.

3.npmのバージョンを確認します

C:\study\skill\react>npm --version
8.19.1