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---
stage: Package
group: Package Registry
info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/product/ux/technical-writing/#assignments
---
# Publish npm packages to the GitLab Package Registry using semantic-release **(FREE)**
This guide demonstrates how to automatically publish npm packages to the [GitLab Package Registry](../../user/packages/npm_registry/index.md) by using [semantic-release](https://github.com/semantic-release/semantic-release).
You can also view or fork the complete [example source](https://gitlab.com/gitlab-examples/semantic-release-npm).
## Initialize the module
1. Open a terminal and navigate to the project's repository.
1. Run `npm init`. Name the module according to [the Package Registry's naming conventions](../../user/packages/npm_registry/index.md#naming-convention). For example, if the project's path is `gitlab-examples/semantic-release-npm`, name the module `@gitlab-examples/semantic-release-npm`.
1. Install the following npm packages:
```shell
npm install semantic-release @semantic-release/git @semantic-release/gitlab @semantic-release/npm --save-dev
```
1. Add the following properties to the module's `package.json`:
```json
{
"scripts": {
"semantic-release": "semantic-release"
},
"publishConfig": {
"access": "public"
},
"files": [ <path(s) to files here> ]
}
```
1. Update the `files` key with glob patterns that selects all files that should be included in the published module. More information about `files` can be found [in npm's documentation](https://docs.npmjs.com/cli/v6/configuring-npm/package-json/#files).
1. Add a `.gitignore` file to the project to avoid committing `node_modules`:
```plaintext
node_modules
```
## Configure the pipeline
Create a `.gitlab-ci.yml` with the following content:
```yaml
default:
image: node:latest
before_script:
- npm ci --cache .npm --prefer-offline
- |
{
echo "@${CI_PROJECT_ROOT_NAMESPACE}:registry=${CI_API_V4_URL}/projects/${CI_PROJECT_ID}/packages/npm/"
echo "${CI_API_V4_URL#https?}/projects/${CI_PROJECT_ID}/packages/npm/:_authToken=\${CI_JOB_TOKEN}"
} | tee -a .npmrc
cache:
key: ${CI_COMMIT_REF_SLUG}
paths:
- .npm/
workflow:
rules:
- if: $CI_COMMIT_BRANCH
variables:
NPM_TOKEN: ${CI_JOB_TOKEN}
stages:
- release
publish:
stage: release
script:
- npm run semantic-release
rules:
- if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
```
This example configures the pipeline with a single job, `publish`, which runs `semantic-release`. The semantic-release library publishes new versions of the npm package and creates new GitLab releases (if necessary).
The default `before_script` generates a temporary `.npmrc` that is used to authenticate to the Package Registry during the `publish` job.
## Set up CI/CD variables
As part of publishing a package, semantic-release increases the version number in `package.json`. For semantic-release to commit this change and push it back to GitLab, the pipeline requires a custom CI/CD variable named `GITLAB_TOKEN`. To create this variable:
<!-- markdownlint-disable MD044 -->
1. On the top bar, on the top right, select your avatar.
1. On the left sidebar, select **Access Tokens**.
1. In the **Token name** box, enter a token name.
1. Under **select scopes**, select the **api** checkbox.
1. Select **Create project access token**.
1. Copy the value.
1. On the top bar, select **Main menu > Projects** and find your project.
1. On the left sidebar, select **Settings > CI/CD**.
1. Expand **Variables**.
1. Select **Add variable**.
1. In the **Key** box, enter `GITLAB_TOKEN`.
1. In the **Value** box, paste the token.
1. Select the **Mask variable** checkbox.
1. Select **Add variable**.
<!-- markdownlint-enable MD044 -->
## Configure semantic-release
semantic-release pulls its configuration information from a `.releaserc.json` file in the project. Create a `.releaserc.json` at the root of the repository:
```json
{
"branches": ["master"],
"plugins": [
"@semantic-release/commit-analyzer",
"@semantic-release/release-notes-generator",
"@semantic-release/gitlab",
"@semantic-release/npm",
[
"@semantic-release/git",
{
"assets": ["package.json"],
"message": "chore(release): ${nextRelease.version} [skip ci]\n\n${nextRelease.notes}"
}
]
]
}
```
## Begin publishing releases
Test the pipeline by creating a commit with a message like:
```plaintext
fix: testing patch releases
```
Push the commit to the default branch. The pipeline should create a new release (`v1.0.0`) on the project's **Releases** page and publish a new version of the package to the project's **Package Registry** page.
To create a minor release, use a commit message like:
```plaintext
feat: testing minor releases
```
Or, for a breaking change:
```plaintext
feat: testing major releases
BREAKING CHANGE: This is a breaking change.
```
More information about how commit messages are mapped to releases can be found in [semantic-releases's documentation](https://github.com/semantic-release/semantic-release#how-does-it-work).
## Use the module in a project
To use the published module, add an `.npmrc` file to the project that depends on the module. For example, to use [the example project](https://gitlab.com/gitlab-examples/semantic-release-npm)'s module:
```plaintext
@gitlab-examples:registry=https://gitlab.com/api/v4/packages/npm/
```
Then, install the module:
```shell
npm install --save @gitlab-examples/semantic-release-npm
```
|
