Updating to the Latest Version
To update the packages, the first step is to identify the outdated packages. In Node.js, the command for finding outdated packages is
After running this command, npm will list all outdated packages, their current version in your project, the version specified in `package.json`, and the latest version available.
The next step is to update these outdated packages. You can update them individually using
or update them all together with the command
npm install [package-name]@latest --save
In-Depth Look at npm
Npm updates packages based on semantic versioning (SemVer). SemVer uses a versioning syntax of Major.Minor.Patch. When npm updates packages, it follows these rules:
- Patch releases: npm update within the specified range.
- Minor releases: npm update to the highest minor version.
- Major releases: npm will not update unless the version is specified in package.json.
The `package.json` file holds metadata about the project, including project’s dependencies and their specific versions. The dependencies object can list all packages needed for your project. When another developer or a deployment system runs `npm install`, npm looks at `package.json` and downloads all the listed packages and their dependencies.
Each package in the “dependencies” section of the `package.json` file follows a versioning format, which npm interprets when running `npm install`. There are three main symbols used – a caret (^), a tilde (~), and a star (*). These correspond to major, minor, and patch updates.