159 lines
5.3 KiB
Markdown
159 lines
5.3 KiB
Markdown
---
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stage: Package
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group: Package
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info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
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---
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# Publish NPM packages to the GitLab Package Registry using semantic-release
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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).
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You can also view or fork the complete [example source](https://gitlab.com/gitlab-examples/semantic-release-npm).
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## Initialize the module
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1. Open a terminal and navigate to the project's repository
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1. Run `npm init`. Name the module according to [the Package Registry's naming conventions](../../user/packages/npm_registry/index.md#package-naming-convention). For example, if the project's path is `gitlab-examples/semantic-release-npm`, name the module `@gitlab-examples/semantic-release-npm`.
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1. Install the following NPM packages:
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```shell
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npm install semantic-release @semantic-release/git @semantic-release/gitlab @semantic-release/npm --save-dev
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```
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1. Add the following properties to the module's `package.json`:
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```json
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{
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"scripts": {
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"semantic-release": "semantic-release"
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},
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"publishConfig": {
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"access": "public"
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},
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"files": [ <path(s) to files here> ]
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}
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```
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1. Update the `files` key with glob pattern(s) 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).
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1. Add a `.gitignore` file to the project to avoid committing `node_modules`:
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```plaintext
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node_modules
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```
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## Configure the pipeline
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Create a `.gitlab-ci.yml` with the following content:
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```yaml
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default:
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image: node:latest
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before_script:
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- npm ci --cache .npm --prefer-offline
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- |
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{
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echo "@${CI_PROJECT_ROOT_NAMESPACE}:registry=${CI_API_V4_URL}/projects/${CI_PROJECT_ID}/packages/npm/"
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echo "${CI_API_V4_URL#https?}/projects/${CI_PROJECT_ID}/packages/npm/:_authToken=\${CI_JOB_TOKEN}"
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} | tee --append .npmrc
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cache:
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key: ${CI_COMMIT_REF_SLUG}
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paths:
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- .npm/
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workflow:
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rules:
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- if: $CI_COMMIT_BRANCH
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variables:
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NPM_TOKEN: ${CI_JOB_TOKEN}
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stages:
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- release
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publish:
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stage: release
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script:
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- npm run semantic-release
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rules:
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- if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
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```
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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).
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The default `before_script` generates a temporary `.npmrc` that is used to authenticate to the Package Registry during the `publish` job.
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## Set up environment variables
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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 environment variable named `GITLAB_TOKEN`. To create this variable:
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1. Navigate to **Project > Settings > Access Tokens**.
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1. Give the token a name, and select the `api` scope.
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1. Click **Create project access token** and copy its value.
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1. Navigate to **Project > Settings > CI / CD > Variables**.
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1. Click **Add Variable**.
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1. In the **Key** field, enter `GITLAB_TOKEN`. In the **Value** field, paste the token created above. Check the **Mask variable** option and click **Add variable**.
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## Configure semantic-release
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semantic-release pulls its configuration information from a `.releaserc.json` file in the project. Create a `.releaserc.json` at the root of the repository:
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```json
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{
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"branches": ["master"],
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"plugins": [
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"@semantic-release/commit-analyzer",
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"@semantic-release/release-notes-generator",
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"@semantic-release/gitlab",
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"@semantic-release/npm",
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[
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"@semantic-release/git",
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{
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"assets": ["package.json"],
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"message": "chore(release): ${nextRelease.version} [skip ci]\n\n${nextRelease.notes}"
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}
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]
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]
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}
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```
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## Begin publishing releases
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Test the pipeline by creating a commit with a message like:
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```plaintext
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fix: testing patch releases
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```
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Push the commit to `master`. 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.
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To create a minor release, use a commit message like:
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```plaintext
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feat: testing minor releases
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```
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Or, for a breaking change:
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```plaintext
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feat: testing major releases
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BREAKING CHANGE: This is a breaking change.
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```
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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).
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## Use the module in a project
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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:
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```plaintext
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@gitlab-examples:registry=https://gitlab.com/api/v4/packages/npm/
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```
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Then, install the module:
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```shell
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npm install --save @gitlab-examples/semantic-release-npm
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```
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