debian-mirror-gitlab/doc/development/fe_guide/storybook.md

---
stage: none
group: unassigned
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
---

# Storybook

The Storybook for the `gitlab-org/gitlab` project is available on our [GitLab Pages site](https://gitlab-org.gitlab.io/gitlab/storybook/).

## Storybook in local development

Storybook dependencies and configuration are located under the `storybook/` directory.

To build and launch Storybook locally, in the root directory of the `gitlab` project:

1. Install Storybook dependencies:

    ```shell
    yarn storybook:install
    ```

1. Build the Storybook site:

    ```shell
    yarn storybook:start
    ```

## Adding components to Storybook

Stories can be added for any Vue component in the `gitlab` repository.

To add a story:

1. Create a new `.stories.js` file in the same directory as the Vue component.
   The filename should have the same prefix as the Vue component.

    ```txt
    vue_shared/
    ├─ components/
    │  ├─ sidebar
    │  |  ├─ todo_toggle
    │  |  |  ├─ todo_button.vue
    │  │  |  ├─ todo_button.stories.js
    ```

1. Write the story as per the [official Storybook instructions](https://storybook.js.org/docs/vue/writing-stories/introduction/)

   NOTE:
   Specify the `title` field of the story as the component's file path from the `javascripts/` directory, without the `/components` part.
   For example, if the component is located at `app/assets/javascripts/vue_shared/components/sidebar/todo_toggle/todo_button.vue`,
   specify the story `title` as `vue_shared/sidebar/todo_toggle/todo_button`.
   If the component is located in the `ee/` directory, make sure to prefix the story's title with `ee/` as well.
   This will ensure the Storybook navigation maps closely to our internal directory structure.

## Mock backend APIs

The GitLab Storybook uses [MirajeJS](https://miragejs.com/) to mock REST and GraphQL APIs. Storybook shares the MirajeJS server
with the [frontend integration tests](../testing_guide/testing_levels.md#frontend-integration-tests). You can find the MirajeJS
configuration files in `spec/frontend_integration/mock_server`.