Npm install ignores tilde (~) in version number

问题

I would like to install 1.8.x version a package, and be able to later automatically update this dependency inside the >=1.8.0 <1.9.0 range.

I tried to run this command:

npm install example-package@~1.8 --save

Unfortunately it adds this record to my package.json:

"example-package" : "^1.8.0"

But what I want is this:

"example-package" : "~1.8.0"

How is it possible to do it with npm install, without manually edit the package.json file?

回答1:

The semver prefix is defined by the save-prefix config. The default value is a caret (^) which you can check by running the following npm config command:

npm config get save-prefix

Unfortunately, the npm install command has no option to specify this, so what you'll need to do is:

Set the save-prefix value to a tilde (~) by running:
```
npm config set save-prefix="~"
```
Install your package by running:
```
npm i example-package@1.8.0 --save
```
Note: The tilde (~) must not be included in the install command.
Finally, set the save-prefix value back to it's default, i.e. a caret (^) by running:
```
npm config delete save-prefix
```
Note: You wouldn't do this last step if you wanted all future npm install's to use the tilde (~) prefix instead of a caret (^).

The above steps will add the following record in package.json:

"example-package" : "~1.8.0"

_{Note the tilde ~ instead of the default caret ^}

You can utilize the && operator to combine the aforementioned commands into a compound command. For instance:

npm config set save-prefix="~" && npm i example-package@1.8.0 --save && npm config delete save-prefix

来源：https://stackoverflow.com/questions/60864514/npm-install-ignores-tilde-in-version-number

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node.js

npm

node-modules

npm-install