如何切換紗線版本/檢查紗線的安裝位置？

Question

您好，我嘗試了以下方法：

yarn -v => 1.3.2

brew list yarn =>

/usr/local/Cellar/yarn/1.13.0/bin/yarn
/usr/local/Cellar/yarn/1.13.0/bin/yarnpkg
/usr/local/Cellar/yarn/1.13.0/libexec/bin/ (5 files)
/usr/local/Cellar/yarn/1.13.0/libexec/lib/ (2 files)
/usr/local/Cellar/yarn/1.13.0/libexec/package.json

brew switch yarn 1.13.0 =>

Cleaning /usr/local/Cellar/yarn/0.24.6
Cleaning /usr/local/Cellar/yarn/1.7.0
Cleaning /usr/local/Cellar/yarn/1.13.0
Cleaning /usr/local/Cellar/yarn/1.12.3
2 links created for /usr/local/Cellar/yarn/1.13.0

但是yarn -v仍然=> 1.3.2

npm list -g --depth=0 =>也不在npm上

/Users/johndoe/.nvm/versions/node/v9.11.1/lib
├──  error: ENOENT: no such file or directory, stat '/Users/johndoe/.nvm/versions/node/v9.11.1/lib/node_modules/@particles/dashboard
├──  error: ENOENT: no such file or directory, stat '/Users/johndoe/.nvm/versions/node/v9.11.1/lib/node_modules/@particles/navigation-tiers
├── create-react-native-app@1.0.0
├── exp@51.4.0
├──  error: ENOENT: no such file or directory, stat '/Users/johndoe/.nvm/versions/node/v9.11.1/lib/node_modules/my-procore
├── node-gyp@3.8.0
├── npm@5.6.0
└── react-native-cli@2.0.1

Answer 1

您可能想使用which命令來檢查您在shell上執行的實際命令而不是yarn命令

$ which yarn
/usr/local/bin/yarn
$ ls -l /usr/local/bin/yarn
lrwxr-xr-x  1 hanxue  admin  30 Jan 17 01:59 /usr/local/bin/yarn -> ../Cellar/yarn/1.13.0/bin/yarn

您可能正在執行nvm安裝的其他版本的yarn 。 我不建議同時使用nvm和brew 。 兩者都是在多個版本的節點之間安裝和切換的絕佳選擇，但同時使用它們可能會引起沖突和混亂。