软件版本编号之前的 ^是什么意思?
我正在考虑更新我的应用程序中的软件包,我正在更新“@type/react-router-dom”:“ 4.3.1”为“ 5.0.0”,但它在一个巨大的项目中,我害怕打破它。
因此,我正在读取package.json文件,然后在v号码之前找到了带有^
符号的导入“ react-router-dom”:“^4.3.1”。而且我不确定这是什么意思,所以我不能确定它在我更新时不会成为应用程序破裂的原因...
有人可以揭示此^
符号吗?
I am thinking of updating a package in my app specifically I am updating "@types/react-router-dom": "4.3.1" to "5.0.0" but its in a giant project and I am afraid to break it.
So I was reading over the package.json file and I found the import "react-router-dom": "^4.3.1" with the ^
symbol ahead of the v number. And Im not sure what it means, so I cant be sure it wont be the cause for the app breaking when i update...
Can someone shed some light on this ^
symbol?
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^
表示“与” 兼容。因此,例如,如果您要运行npm Update
或npm install
,则指定了一个软件包“^4.3.1”
在您的package.json中,将安装最新的4.xx
版本,而不是5.xx
版本,因为该较新版本可能是不兼容的。有几种特殊情况:^1.2.3 is> = 1.2.3< 2.0.0
^0.2.3 is> = 0.2.3< 0.3.0(0.xx是特殊)
^0.0.1 is = 0.0.1(0.0.x是特殊)
^1.2 is> = 1.2.0&lt ; 2.0.0(类似 ^1.2.0)
^1 is> = 1.0.0< 2.0.0
如果有疑问,我会使用一个semver计算器,例如 https://semver.npmjs.com/
^
means “compatible with”. So for example, if you were to run annpm update
ornpm install
, with a package specified to a version"^4.3.1"
in your package.json, the latest4.x.x
version would be installed, and not a5.x.x
version since that newer version would be potentially incompatible. There are a few special cases:^1.2.3 is >=1.2.3 <2.0.0
^0.2.3 is >=0.2.3 <0.3.0 (0.x.x is special)
^0.0.1 is =0.0.1 (0.0.x is special)
^1.2 is >=1.2.0 <2.0.0 (like ^1.2.0)
^1 is >=1.0.0 <2.0.0
When in doubt with a package, I use a semver calculator like https://semver.npmjs.com/