156 lines
5.2 KiB
Markdown
156 lines
5.2 KiB
Markdown
---
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stage: none
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group: unassigned
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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/product/ux/technical-writing/#assignments
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---
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# Frontend Development Guidelines
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This document describes various guidelines to ensure consistency and quality
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across the GitLab frontend team.
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## Overview
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GitLab is built on top of [Ruby on Rails](https://rubyonrails.org). It uses [Haml](https://haml.info/) and a JavaScript-based frontend with [Vue.js](https://vuejs.org). If you are not sure when to use Vue on top of Haml-page, please read [this explanation](vue.md#when-to-add-vue-application).
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<!-- vale gitlab.Spelling = NO -->
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Be wary of [the limitations that come with using Hamlit](https://github.com/k0kubun/hamlit/blob/master/REFERENCE.md#limitations).
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<!-- vale gitlab.Spelling = YES -->
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We also use [SCSS](https://sass-lang.com) and plain JavaScript with
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modern ECMAScript standards supported through [Babel](https://babeljs.io/) and ES module support through [webpack](https://webpack.js.org/).
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Working with our frontend assets requires Node (v12.22.1 or greater) and Yarn
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(v1.10.0 or greater). You can find information on how to install these on our
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[installation guide](../../install/installation.md#4-node).
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### Browser Support
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For supported browsers, see our [requirements](../../install/requirements.md#supported-web-browsers).
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Use [BrowserStack](https://www.browserstack.com/) to test with our supported browsers.
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Sign in to BrowserStack with the credentials saved in the **Engineering** vault of the GitLab
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[shared 1Password account](https://about.gitlab.com/handbook/security/#1password-guide).
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## Initiatives
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You can find current frontend initiatives with a cross-functional impact on epics
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with the label [frontend-initiative](https://gitlab.com/groups/gitlab-org/-/epics?state=opened&page=1&sort=UPDATED_AT_DESC&label_name[]=frontend-initiative).
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## Principles
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[High-level guidelines](principles.md) for contributing to GitLab.
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## Development Process
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How we [plan and execute](development_process.md) the work on the frontend.
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## Architecture
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How we go about [making fundamental design decisions](architecture.md) in the GitLab frontend team
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or make changes to our frontend development guidelines.
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## Testing
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How we write [frontend tests](../testing_guide/frontend_testing.md), run the GitLab test suite, and debug test related
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issues.
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## Pajamas Design System
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Reusable components with technical and usage guidelines can be found in our
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[Pajamas Design System](https://design.gitlab.com/).
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## Design Patterns
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JavaScript [design patterns](design_patterns.md) in the GitLab codebase.
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## Design Anti-patterns
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JavaScript [design anti-patterns](design_anti_patterns.md) we try to avoid.
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## Vue.js Best Practices
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Vue specific [design patterns and practices](vue.md).
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## Vuex
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[Vuex](vuex.md) specific design patterns and practices.
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## Axios
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[Axios](axios.md) specific practices and gotchas.
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## GraphQL
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How to use [GraphQL](graphql.md).
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## HAML
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How to use [HAML](haml.md).
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## ViewComponent
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How we use [ViewComponent](view_component.md).
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## Icons and Illustrations
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How we use SVG for our [Icons and Illustrations](icons.md).
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## Dependencies
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General information about frontend [dependencies](dependencies.md) and how we manage them.
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## Keyboard Shortcuts
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How we implement [keyboard shortcuts](keyboard_shortcuts.md) that can be customized and disabled.
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## Editors
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GitLab text editing experiences are provided by the [Source Editor](source_editor.md) and
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the [Content Editor](content_editor.md).
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## Frontend FAQ
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Read the [frontend's FAQ](frontend_faq.md) for common small pieces of helpful information.
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## Style Guides
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See the relevant style guides for our guidelines and for information on linting:
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- [JavaScript](style/javascript.md). Our guide is based on
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the excellent [Airbnb](https://github.com/airbnb/javascript) style guide with a few small
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changes.
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- [SCSS](style/scss.md): [our SCSS conventions](https://gitlab.com/gitlab-org/frontend/gitlab-stylelint-config) which are enforced through [`stylelint`](https://stylelint.io).
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- [HTML](style/html.md). Guidelines for writing HTML code consistent with the rest of the codebase.
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- [Vue](style/vue.md). Guidelines and conventions for Vue code may be found here.
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## [Tooling](tooling.md)
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Our code is automatically formatted with [Prettier](https://prettier.io) to follow our guidelines. Read our [Tooling guide](tooling.md) for more detail.
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## [Performance](performance.md)
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Best practices for monitoring and maximizing frontend performance.
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## [Security](security.md)
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Frontend security practices.
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## Accessibility
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Our [accessibility standards and resources](accessibility.md).
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## Logging
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Best practices for [client-side logging](logging.md) for GitLab frontend development.
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## [Internationalization (i18n) and Translations](../i18n/externalization.md)
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Frontend internationalization support is described in [this document](../i18n/index.md).
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The [externalization part of the guide](../i18n/externalization.md) explains the helpers/methods available.
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## [Troubleshooting](troubleshooting.md)
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Running into a Frontend development problem? Check out [this guide](troubleshooting.md) to help resolve your issue.
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