yarn info

显示有关软件包的信息。

yarn info <package> [<field>]

该命令将获取有关包的信息并以树形格式返回。该软件包不必在本地安装。

yarn info react

yarn info vx.x.x
{ name: 'react',
  version: '15.4.0-rc.2',
  description: 'React is a JavaScript library for building user interfaces.',
  time: { modified: '2016-10-06T22:09:27.397Z', ... } ... }

此命令的默认报告样式是单引号序列化。要发出有效的JSON行，请使用标准--json标志：

yarn info react --json

{"type":"inspect","data":{"name":"react","time":{...}}}
{"type":"finished","data":417}

特定版本的信息

附加@[version]到包参数以提供特定于该版本的信息：

yarn info react@15.3.0

yarn info vx.x.x
{ name: 'react',
  version: '15.3.0',
  description: 'React is a JavaScript library for building user interfaces.',
  time: { modified: '2016-10-06T22:09:27.397Z', ... } ... }

选择特定的字段

如果提供了可选的字段参数，则只返回该树的那部分。

yarn info react description

yarn info vx.x.x
React is a JavaScript library for building user interfaces.

或者检查可用版本：

yarn info react versions

yarn info v1.1.0
[ '0.0.1',
  '0.0.2',
  '0.0.3',
(etc)

如果指定的字段又是一个嵌套对象，则返回子树：

yarn info react time

yarn info vx.x.x
{ modified: '2016-10-06T22:09:27.397Z',
  created: '2011-10-26T17:46:21.942Z', ... }

yarn info react time --json
{"type":"inspect","data":{"modified":"2016-10-06T22:09:27.397Z","created":...}}
...

检索自述文件字段

请注意，默认情况下，yarn info不会返回该readme字段（因为它通常很长）。要显式请求该字段，请使用第二个参数：

yarn info react readme

yarn info vx.x.x
## react

An npm package to get you immediate access to
[React](https://facebook.github.io/react/).
...