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Automatically generate a release, along with a corresponding git tag, for GitHub-hosted source code.
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npm install semantic-release-github@5.0.1
Automatically generate a release, along with a corresponding git tag, for GitHub-hosted source code.
When you create a new release for your GitHub project, you probably do several of the steps listed below:
Well, semantic-release-github streamlines all those steps into a single command line tool.
Since semantic-release-github is a command line tool, you can call semantic-release-github yourself whenever you want, or you can setup your project to automatically call semantic-release-github after every commit to your repository, or set it up to run on a regular schedule.
This idea, however, is not new. semantic-release-github was heavily inspired by the work of semantic-release.
To install the semantic-release-github tool for use in your project's release process please run the following command:
yarn add --dev semantic-release-github
Setup the environment variable described in the Required Environment Variable section.
Then call semantic-release-github from within your project's top folder:
$(yarn bin)/semantic-release-github
To learn how semantic-release-github can be used to automatically release your project on new changes to your repository, please see the Continuous Integration and Delivery (CID) Setup section below.
First step of semantic-release-github is to get a list of commits made to your project after the latest semantic version tag. If no commits are found, which typically happens if the latest commit in your project is pointed to by a semantic version tag, then semantic-release-github will exit cleanly and indicate no changes can be released. This ensures you can run the release process multiple times and only release new versions if there are unreleased commits. If unreleased commits are available, semantic-release-github will proceed to the next step.
Unless you have configured a preset, the convention used by your project will be determined by conventional-commits-detector. Once we have determined your convention, we pass along the preset package associated with that convention to conventional-recommended-bump. conventional-recommended-bump will determine the appropriate version to release. For more information on how versions are determined, please see the Version Selection section below.
Once a recommendation has been provided by conventional-recommended-bump, we generate a new GitHub release page, with a list of all the changes made since the last version, using the authentication token configured in the Required Environment Variables section below. Creating a GitHub release also creates an annotated git tag (You can retrieve the annotated tag using git fetch).
Lastly, a comment will be posted to every issue that is referenced in a released commit, informing subscribers to that issue of the recent release and version number.
For semantic-release-github to publish a release to GitHub a GitHub personal access token must be setup within your environment with the repo scope selected.
Environment variable name - GITHUB_AUTH_TOKEN or GITHUB_TOKEN
The GitHub personal access token must be associated with an account that has Write permissions on the repository that will be released.
Version selection, the format of the release notes, among other things, are configured through a conventional-changelog preset package.
For example, to use the ESLint release conventions, first install their preset package along-side semantic-release-github:
yarn add --dev conventional-changelog-eslint
Then pass the name, minus conventional-changelog-, of the preset package to semantic-release-github:
$(yarn bin)/semantic-release-github --preset eslint
If a preset is not provided semantic-release-github will use conventional-changelog-angular.
By default all API calls to GitHub are made over HTTPS. To use HTTP set the environment variable GITHUB_INSECURE_API to true. Other values, including not setting the environment variable, will cause semantic-release-github to use HTTPS.
We strongly advise against communicating with GitHub over HTTP, but this option is supported for those cases where configuring SSL for GitHub is not feasible.
Since semantic-release-github relies on a GitHub token, and a package published to the public npm registry, semantic-release-github works on any GitHub-compatible continuous integration platform.
Documentation pending...
Once semantic-release-github has created a release on GitHub, the next step for an npm package is to publish that package to an npm-compatible registry. To publish your project to an npm-compatible registry, please use npm-publish-git-tag.
As noted earlier semantic-release-github uses conventional-recommended-bump to determine if a release is needed, and whether that should be a major, minor, or patch release.
The process involves semantic-release-github passing the list of all unreleased commits, along with your project's commit message convention, to conventional-recommended-bump. conventional-recommended-bump will either report that no new release is recommended, or it will recommend a new major, minor, or patch release.
If conventional-recommended-bump indicates that no new release should be made, semantic-release-github will not release a new version of your project.
If a release is recommended, and no previous version exists, we will always set the first version to 1.0.0.
If a previous version exists, we take that version and increment it according to the recommendation using the default behavior of the inc function provided by the semver package.
You can employ many different release strategies using an automated tool such as semantic-release-github.
Below we document a few release strategies. Please don't consider this list exhaustive. There are likely many other ways to decide when it's best to generate a new release for your project.
Publishing a new release on every push to a repository with new commits is the approach taken by this project. If you take this approach, you can push a single commit, leading to a release for that one change, or you can create multiple commits and push them all at once, leading to a single release containing all those changes.
An example our setup for GitHub CI can be seen in the Continuous Integration and Delivery (CID) Setup section above.
You may also release your changes on a schedule. For example, using a CI platform like Jenkins CI, you can create and configure a job to run on a given schedule, such as once every two weeks, and, as part of a Post Build Action, run the release tool.
Other CI platforms besides Jenkins also allow you to run a particular action on a given schedule, allowing you to schedule releases as you could with Jenkins CI.
With this strategy all commits that have accumulated in your repository since the last scheduled job run will be incorporated into a single new release. Because this release tool uses conventional-recommended-bump, which recommends an appropriate new version based on all commits targeted for release, you can be assured that each scheduled release will use a version appropriate for the changes accumulated in that release.
A collection of common issues encountered while using semantic-release-github.
In some instances you may see the following error after running semantic-release-github:
semantic-release-github failed for the following reason - GitHubError: 404 Project Not Found (404)
That error can be caused by one of several reasons.
First, the project, or at least the project URL used by semantic-release-github, is not valid. Please make sure the repository field in your package.json is correct. If it is correct, please consider running semantic-release-github in debug mode to see what URL is being used to interact with GitHub.
Second, you have not set the required environment variable, or the access token assigned to that environment variable does not have access to your project's repository.
To assist users of semantic-release-github with debugging the behavior of this module we use the debug utility package to print information about the release process to the console. To enable debug message printing, the environment variable DEBUG, which is the variable used by the debug package, must be set to a value configured by the package containing the debug messages to be printed.
To print debug messages on a unix system set the environment variable DEBUG with the name of this package prior to executing semantic-release-github:
DEBUG=semantic-release-github semantic-release-github
On the Windows command line you may do:
set DEBUG=semantic-release-github
semantic-release-github
We only support Long-Term Support versions of Node.
We specifically limit our support to LTS versions of Node, not because this package won't work on other versions, but because we have a limited amount of time, and supporting LTS offers the greatest return on that investment.
It's possible this package will work correctly on newer versions of Node. It may even be possible to use this package on older versions of Node, though that's more unlikely as we'll make every effort to take advantage of features available in the oldest LTS version we support.
As each Node LTS version reaches its end-of-life we will remove that version from the node engines property of our package's package.json file. Removing a Node version is considered a breaking change and will entail the publishing of a new major version of this package. We will not accept any requests to support an end-of-life version of Node. Any merge requests or issues supporting an end-of-life version of Node will be closed.
We will accept code that allows this package to run on newer, non-LTS, versions of Node. Furthermore, we will attempt to ensure our own changes work on the latest version of Node. To help in that commitment, our continuous integration setup runs against all LTS versions of Node in addition the most recent Node release; called current.
JavaScript package managers should allow you to install this package with any version of Node, with, at most, a warning if your version of Node does not fall within the range specified by our node engines property. If you encounter issues installing this package, please report the issue to your package manager.
Please read our contributing guide to see how you may contribute to this project.
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