npm安装使用^符号时，在0.0.1等版本下区别

Caret Ranges ^1.2.3 ^0.2.5 ^0.0.4§

Allows changes that do not modify the left-most non-zero digit in the [major, minor, patch] tuple. In other words, this allows patch and minor updates for versions 1.0.0 and above, patch updates for versions 0.X >=0.1.0, and no updates for versions 0.0.X.

Many authors treat a 0.x version as if the x were the major “breaking-change” indicator.

Caret ranges are ideal when an author may make breaking changes between 0.2.4and 0.3.0 releases, which is a common practice. However, it presumes that there will not be breaking changes between 0.2.4 and 0.2.5. It allows for changes that are presumed to be additive (but non-breaking), according to commonly observed practices.

实际使用情况如下：

^1.2.x := >=1.2.0 <2.0.0
^0.0.x := >=0.0.0 <0.1.0
^0.0 := >=0.0.0 <0.1.0

A missing minor and patch values will desugar to zero, but also allow flexibility within those values, even if the major version is zero.

^1.x := >=1.0.0 <2.0.0
^0.x := >=0.0.0 <1.0.0

巴特西

npm安装使用^符号时，在0.0.1等版本下区别

Caret Ranges ^1.2.3 ^0.2.5 ^0.0.4§

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