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https://github.com/vercel/release

Generate changelogs with a single command
https://github.com/vercel/release

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Generate changelogs with a single command

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README 

        


  




# Release



Release is a command line tool to automatically generate a new [GitHub Release](https://help.github.com/articles/creating-releases/) and populates it with the changes (commits) made since the last release.



## Usage



Firstly, install the package from [npm](https://npmjs.com/release):



```bash

npm install -g release

```



Alternatively, you can use [Yarn](https://yarnpkg.com/en/) to install it:



```bash

yarn global add release

```



Once that's done, you can run this command inside your project's directory:



```bash

release 

```



A `` argument can be passed. If you leave it out, a [GitHub Release](https://help.github.com/articles/creating-releases/) will be created from the most recent commit and tag.



According to the [SemVer](https://semver.org) spec, the argument can have one of these values:



-   `major`: Incompatible API changes were introduced

-   `minor`: Functionality was added in a backwards-compatible manner

-   `patch`: Backwards-compatible bug fixes were applied



In addition to those values, we also support creating pre-releases like `3.0.0-canary.1`:



```bash

release pre

```



You can also apply a custom suffix in place of "canary" like this:



```bash

release pre 

```



Assuming that you provide "beta" as the `` your release will then be `3.0.0-beta.1` – and so on...



## Options



The following command will show you a list of all available options:



```bash

release help

```



## Pre-Defining Types



If you want to automate `release` even further, specify the change type of your commits by adding it to the **title** or **description** within parenthesis:



> Error logging works now (patch)



Assuming that you've defined it for a certain commit, `release` won't ask you to set a type for it manually. This will make the process of creating a release even faster.



To pre-define that a commit should be excluded from the list, you can use this keyword:



> This is a commit message (ignore)



## Custom Hook



Sometimes you might want to filter the information that gets inserted into new releases by adding an intro text, replacing certain data or just changing the order of the changes.



With a custom hook, the examples above (and many more) are very easy to accomplish:



By default, release will look for a file named `release.js` in the root directory of your project. This file should export a function with two parameters and always return a `String` (the final release):



```js

module.exports = async (markdown, metaData) => {

	// Use the available data to create a custom release

	return markdown;

};

```



In the example above, `markdown` contains the release as a `String` (if you just want to replace something). In addition, `metaData` contains these properties:



| Property Name    | Content                                               |

| ---------------- | ----------------------------------------------------- |

| `changeTypes`    | The types of changes and their descriptions           |

| `commits`        | A list of commits since the latest release            |

| `groupedCommits` | Similar to `commits`, but grouped by the change types |

| `authors`        | The GitHub usernames of the release collaborators     |



**Hint:** You can specify a custom location for the hook file using the `--hook` or `-H` flag, which takes in a path relative to the current working directory.



## Why?



As we at [Vercel](https://github.com/vercel) moved all of our GitHub repositories from keeping a `HISTORY.md` file to using [GitHub Releases](https://help.github.com/articles/creating-releases/), we needed a way to automatically generate these releases from our own devices, rather than always having to open a page in the browser and manually add the notes for each change.



## Contributing



You can find the authentication flow [here](https://github.com/vercel/release-auth).



1. [Fork](https://help.github.com/articles/fork-a-repo/) this repository to your own GitHub account and then [clone](https://help.github.com/articles/cloning-a-repository/) it to your local device

2. Uninstall the package if it's already installed: `npm uninstall -g release`

3. Link the package to the global module directory: `npm link`

4. You can now use `release` on the command line!



As always, you can use `npm test` to run the tests and see if your changes have broken anything.



## Credits



Thanks a lot to [Daniel Chatfield](https://github.com/danielchatfield) for donating the "release" name on [npm](https://www.npmjs.com) and [my lovely team](https://vercel.com/about) for telling me about their needs and how I can make this package as efficient as possible.



## Author



Leo Lamprecht ([@leo](https://x.com/leo))