纱线 - @npm是什么意思？

Question

我知道正在运行yarn add package@1.2.3会安装package v1.2.3。

我最近遇到了这种语法：yarn add package@npm。 @npm做了什么？这是纱线的特殊标志还是特定于该包装（material-ui）？

我遇到了@npm作为解决方案，通过别名下一个版本来包含两个版本的材料-ui：yarn add material-ui-next@npm:material-ui@next

Answer 1

No real surprises, it is a directive to install a specific package from npm.

yarn add {package1} installs the specified package from the npm registry by default.

yarn add {package1}@npm:{package2} installs package2 from the npm registry and assigns package1 as its alias.

It makes no difference if a package named package1 exists in the npm registry, it will only download the package you've specified with the @npm directive.

From your question, it seems like you've already got a handle on this one.