Learn TypeScript 3 by Building Web Applications

package.json

When you work on a project, usually, you simply don't want to create a long document explaining how to download/install each and every dependency. Instead, you want to have a simple way to install everything at once.

As explained in the official documentation (https://docs.npmjs.com/getting-started/using-a-package.json), a package.json file does the following:

• Lists the packages that your project depends on
• Allows you to specify the versions of all dependencies required by the project using semantic versioning rules (that is, major.minor.patch)
• Makes your build reproducible, and therefore much easier to share with other developers

If you want to know more about semantic versioning (also known as semver), check out the following ...