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authorConnor Shea <connor.james.shea@gmail.com>2016-07-25 21:29:43 +0300
committerConnor Shea <connor.james.shea@gmail.com>2016-09-22 04:02:18 +0300
commit79c2f60e9172cb7ce41ae75ae47938d6ceddd4c4 (patch)
treeb8077fd93f2f2d7a752857a3743d4d3be9ad9739 /doc/development/frontend.md
parentccbaed208b5ea3d79bafed7267d644147308556a (diff)
Further revisions/additions [ci skip]
Diffstat (limited to 'doc/development/frontend.md')
-rw-r--r--doc/development/frontend.md23
1 files changed, 17 insertions, 6 deletions
diff --git a/doc/development/frontend.md b/doc/development/frontend.md
index c2dd130c258..f6ed740a61a 100644
--- a/doc/development/frontend.md
+++ b/doc/development/frontend.md
@@ -1,7 +1,7 @@
-# Frontend Guidelines
+# Frontend Development Guidelines
-This document describes various guidelines to follow to ensure good and
-consistent performance of GitLab.
+This document describes various guidelines to ensure consistency and quality
+across GitLab's frontend.
## Performance
@@ -20,10 +20,12 @@ Steps to split page-specific JavaScript from the main `application.js`:
1. Create a directory for the specific page(s), e.g. `graphs/`.
1. In that directory, create a `namespace_bundle.js` file, e.g. `graphs_bundle.js`.
+1. In `graphs_bundle.js` add the line `//= require_tree .`, this adds all other files in the directory to the bundle.
+1. Add any necessary libraries to `app/assets/javascripts/lib/`, all files directly descendant from this directory will be precompiled as separate assets. In this case, `chart.js` would be added.
1. Add the new "bundle" file to the list of precompiled assets in
`config/application.rb`.
- For example: `config.assets.precompile << "graphs/graphs_bundle.js"`.
-1. Add any necessary libraries to `app/assets/javascripts/lib/`, all files directly descendant from this directory will be precompiled as separate assets. In this case, `chart.js` would be added.
+1. Move code reliant on these libraries into the `graphs` directory.
1. In the relevant views, add the scripts to the page with the following:
```haml
@@ -32,7 +34,9 @@ Steps to split page-specific JavaScript from the main `application.js`:
= page_specific_javascript_tag('graphs/graphs_bundle.js')
```
-The above loads `chart.js` and `graphs_bundle.js` for only this page. `chart.js` is separated from the bundle file so it can be cached separately from the bundle and reused for other pages that also rely on the library.
+The above loads `chart.js` and `graphs_bundle.js` for only this page. `chart.js`
+is separated from the bundle file so it can be cached separately from the bundle
+and reused for other pages that also rely on the library.
### Minimizing page size
@@ -42,7 +46,7 @@ data is used for users with capped data plans.
General tips:
-- Don't add fonts that are unnecessary.
+- Don't add unnecessary fonts.
- Prefer font formats with better compression, e.g. WOFF2 is better than WOFF is better than TFF.
- Compress and minify assets wherever possible (For CSS/JS, Sprockets does this for us).
- If a piece of functionality can be reasonably done without adding extra libraries, prefer not to use extra libraries.
@@ -80,8 +84,15 @@ Inline styles should be avoided in almost all cases, they should only be used
when no alternatives can be found. This allows reusability of styles as well as
readability.
+## Style Guides and Linting
+
+See the relevant style guides for details and information on linting:
+
+- [SCSS][scss-style-guide]
+
[d3]: https://d3js.org/
[chartjs]: http://www.chartjs.org/
[chrome-accessibility-developer-tools]: https://github.com/GoogleChrome/accessibility-developer-tools
[audit-rules]: https://github.com/GoogleChrome/accessibility-developer-tools/wiki/Audit-Rules
[xss]: https://en.wikipedia.org/wiki/Cross-site_scripting
+[scss-style-guide]: scss_styleguide.md