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actions-ansi-to-html/node_modules/env-ci/README.md
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# env-ci
Get environment variables exposed by CI services.
[![Build Status](https://github.com/semantic-release/env-ci/workflows/Test/badge.svg)](https://github.com/semantic-release/env-ci/actions?query=workflow%3ATest+branch%3Amaster)
[![npm latest version](https://img.shields.io/npm/v/env-ci/latest.svg)](https://www.npmjs.com/package/env-ci)
Adapted from [codecov-node](https://github.com/codecov/codecov-node/blob/master/lib/detect.js).
## Install
```bash
$ npm install --save env-ci
```
## Usage
```js
const envCi = require("env-ci");
const { name, service, isCi, branch, commit, tag, build, buildUrl, job, jobUrl, isPr, pr, prBranch, slug, root } =
envCi();
if (isCI) {
console.log(`Building repo ${slug} on ${name} service`);
if (isPr) {
console.log(`Building Pull Request #${pr} originating from branch ${prBranch} and targeting branch ${branch}`);
} else {
console.log(`Building branch ${branch}`);
}
if (service === "travis") {
// Do something specific to Travis CI
}
}
```
## Supported variables
| Variable | Description |
| ---------- | ------------------------------------------------------------------------------------------------------ |
| `name` | CI service Commercial name (e.g. `Travis CI`, `CircleCI`, `GitLab CI/CD`) |
| `service` | Standardized CI service name (e.g. `travis`, `circleci`, `gitlab`) |
| `isCi` | `true` is running on a CI, `false` otherwise |
| `branch` | Git branch being built or targeted by a Pull Request |
| `commit` | Commit sha that triggered the CI build |
| `tag` | Git tag that triggered the CI build |
| `build` | CI service build number |
| `buildUrl` | Link to the CI service build |
| `job` | CI service job number |
| `jobUrl` | Link to the CI service job |
| `isPr` | `true` if the build has been triggered by a Pull Request, `false` otherwise |
| `pr` | Pull Request number (only for builds triggered by a Pull Request) |
| `prBranch` | Git branch branch from which the Pull Request originated (only for builds triggered by a Pull Request) |
| `slug` | The slug (in form: owner_name/repo_name) of the repository currently being built |
| `root` | The path to the directory where the repository is being built |
**Note**: Some variables can be detected only on certain CI services. See [Supported CI](#supported-ci).
**Note**: The `pr` and `prBranch` properties are only available for builds triggered when a Pull Request is opened/updated and not on builds triggered by a push on a branch even if that branch happens to be the branch from which the Pull Request originated.
## Supported CI
| CI Service (`name`) | `service` | `isCi` | `branch` | `commit` | `tag` | `build` | `buildUrl` | `job` | `jobUrl` | `isPr` | `pr` | `prBranch` | `slug` | `root` |
| -------------------------------------------------------------------------------------------------------------------------------------- | :-----------: | :----------------: | :-------------------------: | :----------------: | :---------------------: | :----------------: | :----------------: | :----------------: | :----------------: | :-------------------: | :-------------------: | :-------------------: | :----------------: | :----------------: |
| [AppVeyor](https://www.appveyor.com/docs/environment-variables) | `appveyor` | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: |
| [Bamboo](https://confluence.atlassian.com/bamboo/bamboo-variables-289277087.html) | `bamboo` | :white_check_mark: | :white_check_mark: | :white_check_mark: | :x: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :x: | :x: | :x: | :x: | :x: | :white_check_mark: |
| [Bitbucket](https://confluence.atlassian.com/bitbucket/environment-variables-794502608.html) | `bitbucket` | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :x: | :x: | :x: | :x: | :x: | :white_check_mark: | :white_check_mark: |
| [Bitrise](https://devcenter.bitrise.io/builds/available-environment-variables/#exposed-by-bitriseio) | `bitrise` | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :x: | :x: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :x: |
| [Buddy](https://buddy.works/knowledge/deployments/how-use-environment-variables#default-environment-variables) | `buddy` | :white_check_mark: | [:warning:](#buddy) | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :x: | :x: | :white_check_mark: | :white_check_mark: | :x: | :white_check_mark: | :x: |
| [Buildkite](https://buildkite.com/docs/builds/environment-variables) | `buildkite` | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :x: | :x: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: |
| [CircleCI](https://circleci.com/docs/2.0/env-vars/#built-in-environment-variables) | `circleci` | :white_check_mark: | [:warning:](#circleci) | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :x: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :x: |
| [Cirrus CI](https://cirrus-ci.org/guide/writing-tasks/#environment-variables) | `cirrus` | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: |
| [Cloudflare Pages](https://developers.cloudflare.com/pages/platform/build-configuration#environment-variables) | `cloudflarePages` | :white_check_mark: | :white_check_mark: | :white_check_mark: | :x: | :x: | :x: | :x: | :x: | :x: | :x: | :x: | :x: | :white_check_mark: |
| [AWS CodeBuild](https://docs.aws.amazon.com/codebuild/latest/userguide/build-env-ref-env-vars.html) | `codebuild` | :white_check_mark: | [:warning:](#aws-codebuild) | :white_check_mark: | :x: | :white_check_mark: | :white_check_mark: | :x: | :x: | :x: | :x: | :x: | :x: | :white_check_mark: |
| [Codefresh](https://codefresh.io/docs/docs/codefresh-yaml/variables#system-provided-variables) | `codefresh` | :white_check_mark: | :white_check_mark: | :white_check_mark: | :x: | :white_check_mark: | :white_check_mark: | :x: | :x: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: |
| [Codeship](https://documentation.codeship.com/basic/builds-and-configuration/set-environment-variables/#default-environment-variables) | `codeship` | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :x: | :x: | :x: | :x: | :x: | :white_check_mark: | :x: |
| [Drone](https://readme.drone.io/reference/environ/) | `drone` | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: |
| [GitHub Actions](https://docs.github.com/en/actions/learn-github-actions/environment-variables#default-environment-variables) | `github` | :white_check_mark: | :white_check_mark: | :white_check_mark: | :x: | :white_check_mark: | :x: | :x: | :x: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: |
| [GitLab CI/CD](https://docs.gitlab.com/ce/ci/variables/README.html) | `gitlab` | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: |
| [Jenkins](https://wiki.jenkins.io/display/JENKINS/Building+a+software+project) | `jenkins` | :white_check_mark: | [:warning:](#jenkins) | :white_check_mark: | :x: | :white_check_mark: | :white_check_mark: | :x: | :x: | [:warning:](#jenkins) | [:warning:](#jenkins) | [:warning:](#jenkins) | :white_check_mark: | :white_check_mark: |
| [Netlify](https://docs.netlify.com/configure-builds/environment-variables/#netlify-configuration-variables) | `netlify` | :white_check_mark: | [:warning:](#netlify) | :white_check_mark: | :x: | :white_check_mark: | :white_check_mark: | :x: | :x: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: |
| [Puppet](https://puppet.com/docs/pipelines-for-apps/enterprise/environment-variable.html) | `puppet` | :white_check_mark: | :white_check_mark: | :white_check_mark: | :x: | :white_check_mark: | :white_check_mark: | :x: | :x: | :x: | :x: | :x: | :x: | :white_check_mark: |
| [Sail CI](https://sail.ci/docs/environment-variables) | `sail` | :white_check_mark: | [:warning:](#sail) | :white_check_mark: | :x: | :x: | :x: | :x: | :x: | :white_check_mark: | :white_check_mark: | :x: | :white_check_mark: | :white_check_mark: |
| [Scrutinizer](https://scrutinizer-ci.com/docs/build/environment-variables) | `scrutinizer` | :white_check_mark: | :white_check_mark: | :white_check_mark: | :x: | :white_check_mark: | :x: | :x: | :x: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :x: | :x: |
| [Semaphore](https://docs.semaphoreci.com/article/12-environment-variables) | `semaphore` | :white_check_mark: | [:warning:](#semaphore) | :white_check_mark: | [:warning:](#semaphore) | :white_check_mark: | :x: | :x: | :x: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: |
| [Shippable](http://docs.shippable.com/ci/env-vars/#stdEnv) | `shippable` | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :x: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: |
| [TeamCity](https://confluence.jetbrains.com/display/TCD10/Predefined+Build+Parameters) | `teamcity` | :white_check_mark: | :white_check_mark: | :white_check_mark: | :x: | :white_check_mark: | :x: | :x: | :x: | :x: | :x: | :x: | :white_check_mark: | :white_check_mark: |
| [Travis CI](https://docs.travis-ci.com/user/environment-variables#default-environment-variables) | `travis` | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: |
| [Vela](https://go-vela.github.io/docs/reference/environment/variables/) | `vela` | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :x: | :x: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: |
| [Vercel](https://vercel.com/docs/environment-variables) | `vercel` | :white_check_mark: | :white_check_mark: | :white_check_mark: | :x: | :x: | :x: | :x: | :x: | :x: | :x: | :x: | :white_check_mark: | :x: |
| [Visual Studio Team Services](https://docs.microsoft.com/en-us/vsts/pipelines/build/variables) | `vsts` | :white_check_mark: | :white_check_mark: | :white_check_mark: | :x: | :white_check_mark: | :x: | :x: | :x: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :x: | :white_check_mark: |
| [Wercker](http://devcenter.wercker.com/docs/environment-variables/available-env-vars#hs_cos_wrapper_name) | `wercker` | :white_check_mark: | :white_check_mark: | :white_check_mark: | :x: | :white_check_mark: | :white_check_mark: | :x: | :x: | :x: | :x: | :x: | :white_check_mark: | :white_check_mark: |
:warning: See [Caveats](#caveats)
**Note**: Unsupported properties will always be `undefined`. For example if a Ci services doesn't support triggering builds when a Pull Request is opened/updated, `isPr` will be `undefined`.
**Note**: If none of the above CI services is detected, `commit` and `branch` are determined based on the local Git repository, and `isCi` is determined based on the `CI` environment variable.
## API
### envCi(options) => Result
#### options
Type: `Object`
#### env
Type: `Object`<br>
Default: `process.env`
The object to read environment variables from.
#### cwd
Type: `String`<br>
Default: `process.cwd()`
The current working directory in which to execute `git` commands used to determine the `commit` and `branch` [Result](#result) properties in case no [supported CI](#supported-ci) is detected.
### Result
Type: `Object`
[Environment variables values](#supported-variables) exposed by the CI service.
## Caveats
### AWS CodeBuild
AWS CodeBuild doesn't provide an environment variable to determine the current Git branch being built. In addition, it clones the repository in a [detached head state](https://git-scm.com/docs/git-checkout#_detached_head) so the branch cannot be determined with `git rev-parse --abbrev-ref HEAD`.
To work around this limitation, `env-ci` look for the remote branches having the same `HEAD` as the local detached `HEAD` to determine the branch from which the detached `HEAD` was created.
In the rare case where there is multiple remote branches with the same `HEAD` as the local detached `HEAD`, `env-ci` will arbitrarily pick the first one. This can lead to an inaccurate `branch` value in such circumstances.
### Buddy
For builds triggered when [a Pull Request is opened/updated](https://buddy.works/knowledge/deployments/pull-requests), Buddy doesn't provide an environment variable indicating the branch from which the Pull Request originated nor the target branch. It also build from a branch named `pull/<PR number>` so the target branch cannot be determined with a `git` command.
Therefore in the case of Pull Request builds, `env-ci` will not be able to determine the `branch` and `prBranch` properties.
See [feature request](https://forum.buddy.works/t/determine-pull-request-branch-with-environment-variable/911).
### CircleCI
For builds triggered when a Pull Request is opened/updated, CircleCI doesn't provide an environment variable indicating the target branch.
Therefore in the case of Pull Request builds, `env-ci` will not be able to determine the `branch` property. However `prBranch` will be set.
See [feature request](https://discuss.circleci.com/t/create-a-circle-target-branch-envar/10022).
### Cloudflare Pages
For builds triggered when a Pull Request is opened/updated, Cloudflare Pages will re-use the branch variable for the originating branch and not provide a target. Therefore `env-ci` will not be able to determine the `prBranch` property however `branch` will always be set.
### Jenkins
Triggering build when a Pull Request is opened/updated is supported only via the [ghprb-plugin](https://github.com/jenkinsci/ghprb-plugin) and [gitlab-plugin](https://github.com/jenkinsci/gitlab-plugin). Therefore `env-ci` will set `isPr`, `pr` and `prBranch` and define `branch` with the Pull Request target branch only if one those plugin is used.
### Netlify
For builds triggered when a Pull Request is opened/updated, Netlify doesn't provide an environment variable indicating the target branch.
Therefore in the case of Pull Request builds, `env-ci` will not be able to determine the `branch` property. However `prBranch` will be set.
See [feature request](https://answers.netlify.com/t/access-pr-target-branch-when-deploying-preview-build/32402)
### Sail
For builds triggered when a Pull Request is opened/updated, Sail doesn't provide an environment variable indicating the target branch, and the one for the current branch is set to `pull/<PR number>` independently of the the branch name from which the Pull Request originated.
Therefore in the case of Pull Request builds, `env-ci` will not be able to determine the `branch` and `prBranch` properties.
### Semaphore
For builds triggered when a Pull Request is opened/updated, Semaphore 1.0 doesn't provide an environment variable indicating the target branch.
Therefore in the case of Pull Request builds, `env-ci` will not be able to determine the `branch` property. However `prBranch` will be set.
On Semaphore 2.0 the `branch` and `prBranch` properties will work as expected.
The property `tag` is only available on Semaphore 2.0.
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