JavaScript API

Last updated 3 months ago

Usage

const semanticRelease = require('semantic-release');
const {WritableStreamBuffer} = require('stream-buffers');
const stdoutBuffer = WritableStreamBuffer();
const stderrBuffer = WritableStreamBuffer();
try {
const result = await semanticRelease({
// Core options
branch: 'master',
repositoryUrl: 'https://github.com/me/my-package.git',
// Shareable config
extends: 'my-shareable-config',
// Plugin options
githubUrl: 'https://my-ghe.com',
githubApiPathPrefix: '/api-prefix'
}, {
// Run semantic-release from `/path/to/git/repo/root` without having to change local process `cwd` with `process.chdir()`
cwd: '/path/to/git/repo/root',
// Pass the variable `MY_ENV_VAR` to semantic-release without having to modify the local `process.env`
env: {...process.env, MY_ENV_VAR: 'MY_ENV_VAR_VALUE'},
// Store stdout and stderr to use later instead of writing to `process.stdout` and `process.stderr`
stdout: stdoutBuffer,
stderr: stderrBuffer
});
if (result) {
const {lastRelease, commits, nextRelease, releases} = result;
console.log(`Published ${nextRelease.type} release version ${nextRelease.version} containing ${commits.length} commits.`);
if (lastRelease.version) {
console.log(`The last release was "${lastRelease.version}".`);
}
for (const release of releases) {
console.log(`The release was published with plugin "${pluginName}".`);
}
} else {
console.log('No release published.');
}
// Get stdout and stderr content
const logs = stdoutBuffer.getContentsAsString('utf8');
const errors = stderrBuffer.getContentsAsString('utf8');
} catch (err) {
console.error('The automated release failed with %O', err)
}

API

semanticRelease([options], [config]) => Promise

Run semantic-release and returns a Promise that resolves to a Result object.

options

Type: Object

semantic-release options.

Can be used to set any core option or plugin options.

Each option, will take precedence over options configured in the configuration file and shareable configurations.

config

Type: Object

semantic-release configuration specific for API usage.

cwd

Type: String Default: process.cwd()

The current working directory to use. It should be configured to the root of the Git repository to release from.

It allows to run semantic-release from a specific path without having to change the local process cwd with process.chdir().

env

Type: Object Default: process.env

The environment variables to use.

It allows to run semantic-release with specific environment variables without having to modify the local process.env.

stdout

Type: stream.Writable Default: process.stdout

The writable stream used to log information.

It allows to configure semantic-release to write logs to a specific stream rather than the local process.stdout.

stderr

Type: stream.Writable Default: process.stderr

The writable stream used to log errors.

It allows to configure semantic-release to write errors to a specific stream rather than the local process.stderr.

Result

Type: Object Boolean

And object with lastRelease, nextRelease, commits and releases if a release is published or false if no release was published.

lastRelease

Type: Object

Information related to the last release found:

Name

Type

Description

version

String

The version of the last release.

gitHead

String

The sha of the last commit being part of the last release.

gitTag

String

The Git tag associated with the last release.

Notes: If no previous release is found, lastRelease will be an empty Object.

Example:

{
gitHead: 'da39a3ee5e6b4b0d3255bfef95601890afd80709',
version: '1.0.0',
gitTag: 'v1.0.0',
}

commits

Type: Array<Object>

The list of commit included in the new release. Each commit object has the following properties:

Name

Type

Description

commit

Object

The commit abbreviated and full hash.

commit.long

String

The commit hash.

commit.short

String

The commit abbreviated hash.

tree

Object

The commit abbreviated and full tree hash.

tree.long

String

The commit tree hash.

tree.short

String

The commit abbreviated tree hash.

author

Object

The commit author information.

author.name

String

The commit author name.

author.email

String

The commit author email.

author.short

String

The commit author date.

committer

Object

The committer information.

committer.name

String

The committer name.

committer.email

String

The committer email.

committer.short

String

The committer date.

subject

String

The commit subject.

body

String

The commit body.

message

String

The commit full message (subject and body).

hash

String

The commit hash.

committerDate

String

The committer date.

Example:

[
{
commit: {
long: '68eb2c4d778050b0701136ca129f837d7ed494d2',
short: '68eb2c4'
},
tree: {
long: '7ab515d12bd2cf431745511ac4ee13fed15ab578',
short: '7ab515d'
},
author: {
name: 'Me',
email: 'me@email.com',
date: 2018-07-22T20:52:44.000Z
},
committer: {
name: 'Me',
email: 'me@email.com',
date: 2018-07-22T20:52:44.000Z
},
subject: 'feat: a new feature',
body: 'Description of the new feature',
hash: '68eb2c4d778050b0701136ca129f837d7ed494d2',
message: 'feat: a new feature\n\nDescription of the new feature',
committerDate: 2018-07-22T20:52:44.000Z
}
]

nextRelease

Type: Object

Information related to the newly published release:

Name

Type

Description

type

String

The semver type of the release (patch, minor or major).

version

String

The version of the new release.

gitHead

String

The sha of the last commit being part of the new release.

gitTag

String

The Git tag associated with the new release.

notes

String

The release notes for the new release.

Example:

{
type: 'minor',
gitHead: '68eb2c4d778050b0701136ca129f837d7ed494d2',
version: '1.1.0',
gitTag: 'v1.1.0',
notes: 'Release notes for version 1.1.0...',
}

releases

Type: Array<Object>

The list of releases published, one release per publish plugin. Each release object has the following properties:

Name

Type

Description

name

String

Optional. The release name, only if set by the corresponding publish plugin.

url

String

Optional. The release URL, only if set by the corresponding publish plugin.

type

String

The semver type of the release (patch, minor or major).

version

String

The version of the release.

gitHead

String

The sha of the last commit being part of the release.

gitTag

String

The Git tag associated with the release.

notes

String

The release notes for the release.

pluginName

String

The name of the plugin that published the release.

Example:

[
{
name: 'GitHub release',
url: 'https://github.com/me/my-package/releases/tag/v1.1.0',
type: 'minor',
gitHead: '68eb2c4d778050b0701136ca129f837d7ed494d2',
version: '1.1.0',
gitTag: 'v1.1.0',
notes: 'Release notes for version 1.1.0...',
pluginName: '@semantic-release/github'
},
{
name: 'npm package (@latest dist-tag)',
url: 'https://www.npmjs.com/package/my-package',
type: 'minor',
gitHead: '68eb2c4d778050b0701136ca129f837d7ed494d2',
version: '1.1.0',
gitTag: 'v1.1.0',
notes: 'Release notes for version 1.1.0...',
pluginName: '@semantic-release/npm'
}
]