create-react-app error

Question

bash-3.2$ npx create-react-app my-app-ts --template typescript

Creating a new React app in /Users/zxc/A_work/Project/UI/learning/React/my-app-ts.

warning …/…/…/…/…/…/package.json: No license field
Installing packages. This might take a couple of minutes.
Installing react, react-dom, and react-scripts with cra-template-typescript…

You appear to be offline.
Falling back to the local Yarn cache.

yarn add v1.22.10
warning …/…/…/…/…/…/package.json: No license field
[1/4] 🔍 Resolving packages…

error An unexpected error occurred: “There should only be one folder
in a package cache (got in
/Users/zxc/Library/Caches/Yarn/v6/npm-@babel-helper-annotate-as-pure-7.12.13-0f58e86dfc4bb3b1fcd7db806570e177d439b6ab-integrity/node_modules/@babel)”.

Answer 1

阿莱克斯刘 2021-06-17 01:17:21

可能是你电脑的本地缓存出了问题，试试执行以下命令清除一下local cache

yarn cache clean

• 提问者 Zhang_Kyra #1

  清除缓存后，
  error Couldn't find any versions for "react" that matches "latest" in our cache (possible versions are ""). This is usually caused by a missing entry in the lockfile, running Yarn without the --offline flag may help fix this issue.
  然后，执行了yarn add react
  又重新执行npx create-react-app my-app-ts --template typescript， error如下：
  error Can't make a request in offline mode ("https://registry.yarnpkg.com/@typescript-eslint/eslint-plugin/-/eslint-plugin-4.15.2.tgz")
  怎样关闭offline mode？ 尝试执行 yarn --prefer-online， 但是没有解决，仍然是offline mode

• 提问者 Zhang_Kyra #2

  resolved.  in offline mode, will hit the local cache issue.