经过365天集中的开发，迎来了Yarn 2的第一个稳定发行版。作者在文中详细介绍了这件事对社区来说意味着什么。

总览

描述这次发行版本有点困难，它包含主程序，革命性变更，产生于我们日常使用的一些特性的合集等。

强调内容

• The output got redesigned for improved readability
• designed for improved readability
• Our CLI commands (yarn add, …) are now aware of workspaces
• Running yarn install can be made optional on per-repo basis
• A safer npx counterpart called yarn dlx to run one-shot tools
• Run commands on all workspaces with yarn workspaces foreach
• Packages can be modified in-place through the patch: protocol
• Local packages can be referenced through the new portal: protocol
• A new workflow has been designed to efficiently release workspaces
• Workspaces can now be declaratively linted and autofixed

还有…

• Package builds are now only triggered when absolutely needed
• Package builds can now be enabled or disabled on a per-package basis
• Scripts now execute within a normalized shell
• Peer dependencies now work even through yarn link
• The lockfile is now proper YAML
• The codebase is now full TypeScript
• Yarn can now be extended through plugins

重大变化…

• Configuration settings have been normalized
• Packages must respect their boundaries
• Bundle dependencies aren't supported anymore
• Packages are stored in read-only archives

常被问到的问题

有一些社区里常被问到的问题，作者在文中也做了回答。如：

• Who should we thank for this release?
• How easy will it be to migrate to Yarn 2?
• What will happen to the legacy codebase?

深入

除了上述内容，还有一些Yarn 2相关的CLI工具、协议、package等内容。