Understanding How to Manage Node_module in npm

I understand that you are developing an app because it is package-lock.json.

In package.json, the restrictions on the library version to be used are described. The package-lock.json describes the version of the library that was actually installed based on the constraints of package.json.

If you are developing an application, you may be able to release a newer library than you did during the initial library installation.Therefore, in such cases, you will have to run npm update to update the utilization library. https://docs.npmjs.com/cli/update.html

Basically, it's better to use the latest library in the app, but if it's too new, it might run into breaking change and break the app.

So, basically, package.json has constraints such as "at least this version or higher, but there is no major version upgrade, so I want to install it in a good way." is a constraint statement that specifically enables it.

This allows you to "update the utilization library in a good way and update the package-lock.json" at npm update above.