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npm Basics

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Semantic Versioning

4:42 with Reggie Williams

Semantic Version is a system for communicating changes in versions of projects.

Further Reading

Semantic Versioning

  • MAJOR.MINOR.PATCH
  • ^ before a version number means install up to the latest MINOR release.
    • e.g. ^1.1 can install 1.3 if available but not 2.0
  • ~ before a version number means install up to the latest PATCH release.
    • e.g. ~2.0.1 can install 2.0.9 if available but not 2.1.0

Terminal Commands

  • Clear the screen
    • clear

npm Command Line Usage

  • See list of commands

    • npm

  • Installing a packages from package.json

    • npm install

  • Check for outdated packages

    • npm outdated

  • Update packages in your project

    • For local packages npm update
    • For global packages npm update <package name> -g
      • e.g. npm update http-server -g

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    a combination of the name of the package followed by a version number. 0:00
    An individual package can have hundreds of versions and 0:01
    between these versions there may be small or large changes. 0:06
    Some versions may be fixes of bugs from previous versions. 0:10
    Some newer versions would break projects that rely on previous versions. 0:15
    We can gather all of this information from the version number. 0:21
    [SOUND] Package version numbers, consist of three numbers, separated by periods. 0:26

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