Q: How to parse a version string into parts with semver?

Use semver.parse(version) to get a SemVer object with properties like major, minor, patch, and prerelease. Alternatively, functions like semver.major(version) extract specific parts for simpler needs.

Q: Can semver be used in the browser?

Yes, semver can be bundled for browser use via tools like Webpack or Rollup. Its modular exports allow tree-shaking to include only necessary functions, but it's primarily designed for Node.js, so bundle size should be monitored.

Question 1

How to check if a npm package version satisfies a range?

Accepted Answer

Use the semver.satisfies(version, range) function. For example, semver.satisfies('1.2.3', '^1.0.0') returns true. Make sure the range uses proper SemVer syntax like tilde (~) or caret (^) as described in the README.

Question 2

semver vs compare-versions: which should I use?

Accepted Answer

semver is more comprehensive, implementing the full SemVer spec with advanced range support, while compare-versions is lighter and focused on basic comparison. Choose semver for dependency resolution or compare-versions for simple version sorting in minimal projects.

Question 3

How to increment a prerelease version with semver?

Accepted Answer

Use semver.inc(version, 'prerelease', options, identifier). For instance, semver.inc('1.2.3-alpha.1', 'prerelease', 'beta') gives '1.2.3-beta.0'. The CLI supports this with semver 1.2.3 -i prerelease --preid beta.

Question 4

What does the caret (^) mean in semver ranges?

Accepted Answer

In semver, caret ranges like ^1.2.3 allow updates that do not modify the leftmost non-zero digit. For version 1.2.3, it means >=1.2.3 <2.0.0, permitting minor and patch updates but not major breaks, as explained in the advanced syntax section.

Question 5

How to parse a version string into parts with semver?

Accepted Answer

Use semver.parse(version) to get a SemVer object with properties like major, minor, patch, and prerelease. Alternatively, functions like semver.major(version) extract specific parts for simpler needs.

Question 6

Can semver be used in the browser?

Accepted Answer

Yes, semver can be bundled for browser use via tools like Webpack or Rollup. Its modular exports allow tree-shaking to include only necessary functions, but it's primarily designed for Node.js, so bundle size should be monitored.

semver

What is semver?

Overview

Use Cases

Best For

Related Projects

Found a gem we're missing?

Not Ideal For

Pros & Cons

Pros

Cons

Frequently Asked Questions