78 lines
2.1 KiB
Markdown
78 lines
2.1 KiB
Markdown
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# semver-diff [](https://travis-ci.org/sindresorhus/semver-diff)
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> Get the diff type of two [semver](https://github.com/npm/node-semver) versions: `0.0.1 0.0.2` → `patch`
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## Install
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```
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$ npm install semver-diff
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```
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## Usage
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```js
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const semverDiff = require('semver-diff');
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semverDiff('1.1.1', '1.1.2');
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//=> 'patch'
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semverDiff('1.1.1-foo', '1.1.2');
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//=> 'prepatch'
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semverDiff('0.0.1', '1.0.0');
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//=> 'major'
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semverDiff('0.0.1-foo', '1.0.0');
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//=> 'premajor'
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semverDiff('0.0.1', '0.1.0');
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//=> 'minor'
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semverDiff('0.0.1-foo', '0.1.0');
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//=> 'preminor'
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semverDiff('0.0.1-foo', '0.0.1-foo.bar');
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//=> 'prerelease'
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semverDiff('0.1.0', '0.1.0+foo');
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//=> 'build'
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semverDiff('0.0.1', '0.0.1');
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//=> undefined
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semverDiff('0.0.2', '0.0.1');
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//=> undefined
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```
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## API
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### semverDiff(versionA, versionB)
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Returns the difference type between two semver versions, or `undefined` if they're identical or the second one is lower than the first.
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Possible values: `'major'`, `'premajor'`, `'minor'`, `'preminor'`, `'patch'`, `'prepatch'`, `'prerelease'`, `'build'`, `undefined`.
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## Related
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- [latest-semver](https://github.com/sindresorhus/latest-semver) - Get the latest stable semver version from an array of versions
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- [to-semver](https://github.com/sindresorhus/to-semver) - Get an array of valid, sorted, and cleaned semver versions from an array of strings
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- [semver-regex](https://github.com/sindresorhus/semver-regex) - Regular expression for matching semver versions
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- [semver-truncate](https://github.com/sindresorhus/semver-truncate) - Truncate a semver version: `1.2.3` → `1.2.0`
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---
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<div align="center">
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<b>
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<a href="https://tidelift.com/subscription/pkg/npm-semver-diff?utm_source=npm-semver-diff&utm_medium=referral&utm_campaign=readme">Get professional support for this package with a Tidelift subscription</a>
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</b>
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<br>
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<sub>
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Tidelift helps make open source sustainable for maintainers while giving companies<br>assurances about security, maintenance, and licensing for their dependencies.
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</sub>
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</div>
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