CODEWITHSUNDEEP
node.jsnpmnpm-install
Mike
Mike

Reputation: 1268

What is the purpose of using --save-exact

Want to know the use of -exact with --save 

npm i [email protected] --save-dev --save-exact

Upvotes: 91

Views: 56351

Answers (2)

Jorge Garnica
Jorge Garnica

Reputation: 1256

For example, I use --save-exact when I manage projects with webpack.

As you know, when you install a package like npm install --save-dev webpack for example, our package.json will add something like:

"devDependencies": {
    "webpack": "^5.1.3",
}
What does it mean?

When you delete your node_modules folder and you run npm install, the versions of the installed packages could get updated when higher ones are available and that can potentially break your application.

For example from 5.1.3 maybe the package is going to be updated to 5.1.8

So, the --save-exact will generate the next package.json code

"devDependencies": {
    "webpack": "5.1.3",
}

Without the ^ prefix to the version of the package, the installed version will be always the same as specified (here, Webpack version 5.1.3).

More reference here about semantic version with NPM:

Upvotes: 109

Pardeep
Pardeep

Reputation: 2283

When using save=true, npm install will automatically add the package into package.json without the need of using npm install --save every time you run the command. save-exact=true will make sure that no sliding versions (with ~ or ^ ) will be installed.

reference for more information click here

or please go through this https://docs.npmjs.com/cli/install

Upvotes: 41

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