Version number and qualifier in package.json file

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Preface

The package.json file stores all the dependencies of the project and the corresponding version numbers. There are usually special symbols before the version number: "^", "~", "*", ">", ">=", "< ”, "<="; What do these symbols mean?

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1. Version number

Version number format: major.minor.patch (major version number. minor version number. patch version number).

major: major version number, indicating architectural adjustment or major update, incompatible with older versions

minor: minor version number, indicating adding new features or making some modifications

patch: patch version number, indicating bug fix

For example:

"vconsole": "3.10.1"
//主版本号为3
//次版本号为10
//修补版本号为1

2. The meaning of limited symbols

1.^Large version number upgrade

"vue": "^3.2.6"
//安装时不改变主版本号；获取次版本号和修复版本号最新版本
//获取3.x.x的最新版本；即：>=3.2.6并且<=4.0.0

2.～Minor version number upgrade

 "@babel/runtime": "~7.12.0"
//锁定主版本号和次版本号，修补版本号获取最新版本
//获取7.12.x最新版本号；即>=7.12.0并且小于7.13.0

3.*Any version number

"mini-types": "*"
//表示任意版本；会获取最新版本号

4.>Greater than a certain version number;>=Greater than or equal to a certain version number

"node": >=12.22.7"
//node版本号大于等于12.22.7版本

5.<Less than a certain version number;<=Less than or equal to a certain version number

"eruda": "<=2.4.1"
//eruda版本小于等于2.4.1

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Summarize

^Lock major version number

~Lock minor version number

*Get the latest version number