semver-luau

A Luau library to parse and compare Semantic Versioning compatible version numbers.

Semantic Versioning (Semver) is a versioning scheme for software that uses a three-part version number format, MAJOR.MINOR.PATCH. Additionally, Semver defines rules on when to increment each of these parts:

• MAJOR version increments indicate incompatible API changes.
• MINOR version increments indicate the addition of functionality in a backward-compatible manner.
• PATCH version increments indicate backward-compatible bug fixes.

Semver also allows for optional pre-release and build metadata tags.

For a detailed set of guidelines that Semver version numbers follow, visit the previously linked website containing the full Semver specification.

Usage

To improve error / nil handling ergnomics, this library makes use of util.luau's Option and Result implementations. Any fallible methods return a Result and potentially null values are represented as Options.

Invalid versions should return a Result with the respective error. If not, this is considered a bug, and please consider filing an issue here.

local semver = require("semver")

-- Parse version strings
local v1 = semver.parse("1.2.3"):unwrap() --[[
  major = 1,
  minor = 2,
  patch = 3,
  buildMetadata = Option::None,
  prerelease = Option::None
]]
local v2 = semver.parse("5.12.0+build.1731248766"):unwrap() --[[
  major = 5,
  minor = 12,
  patch = 0,
  buildMetadata = Option::Some("build.1731248766"),
  prerelease = Option::None
]]

-- Compare versions
print(v1 < v2)  -- true
print(v1 > v2)  -- false
print(v1 == v2) -- false

MSLV (Minimum Supported Luau Version)

This library requires at least requires at least Luau 0.629, which corresponds to Lune 0.8.7 (for leading | support).

License

This project is licensed under the MIT license.