Aim:
Understand npm versioning and how to interpret version numbers for packages.
Semantic Versioning Basics
npm uses Semantic Versioning (SemVer) to manage package versions. The version number is in the format Major.Minor.Patch
.
Version Number Breakdown:
- Major: Increases when there are breaking changes that make the new version incompatible with previous versions. (e.g., 2.0.0)
- Minor: Increases when new features are added but are backward compatible. (e.g., 1.2.0)
- Patch: Increases for backward compatible bug fixes. (e.g., 1.1.1)
- Suffix (optional): Used to denote pre-release versions, consisting of a hyphen followed by a string. (e.g., 1.1.1-beta)
NuGet Package Version
NuGet is a package manager for .NET, following Semantic Versioning to help developers manage dependencies.
Key Points:
- Package Versioning: NuGet packages use SemVer to indicate the type of changes in new versions.
- Pre-release Versions: Indicated with a suffix (e.g., 1.0.0-beta) and are typically less stable.
- Version Constraints: Specifies compatible version ranges for dependencies (e.g., [1.0.0, 2.0.0)).
- Floating Versions: Allows using the latest version of a dependency (e.g., 1.0.*).
- Version Resolution: NuGet resolves dependencies based on specified version constraints, preferring the latest compatible version.
Example:
Suppose you are using a NuGet package ExampleLib
:
- If you reference version
1.2.3
, you are using a stable version with specific features and bug fixes. - If the package releases a new version
2.0.0
, it indicates breaking changes. - If a new version
1.3.0
is released, it indicates new features added but still compatible with1.x.x
. - If a new version
1.2.4
is released, it indicates bug fixes but still compatible with1.2.x
. - If you see
1.2.3-beta
, it is a pre-release version and might be less stable.
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