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`a11y.md` lists `seek-bar` and `volume-control` under "what is already correct" because both pass `aria-label`. Measured with Accessibility.getFullAXTree against the running app on all eleven views, both sliders compute a name of "": `wa-slider` puts role="slider" on a div inside its own shadow root, pointing aria-labelledby at an empty internal <label>, and that IDREF outranks the host's aria-label. `volume-control` did not have the aria-label the audit credits it with at all. The name comes from `label` now, which is the library's own API — and for a slider that is visible, so `styles/wa-slider-label.css.ts` hides it by part. Preferred over reaching into the shadow root the way name-dialog.ts must: if Web Awesome renames the part the label becomes visible rather than silently nameless. The second rule in that file is load-bearing — `#slider` takes an 8px margin the moment a label exists, which grows the bar from 6px to 14px and moves the transport with it. a11y.25 is the same family: wa-progress-bar maps `label` onto its inner aria-label, falling back to the localised word "progress" — so it was named after the widget rather than after the work, not unnamed. The existing transport test asserted the host's aria-label and called it an accessible name, so it was pinning the bug.
YellowJacket Frontend
This directory contains the frontend for YellowJacket.
Dependencies
There are a couple of tools that are required to build and use the frontend.
vitefor- transpiling typescript
- bundling the final "package" that is useb by the webview
- running a dev server with hot-reloading
- configured with the
vite.config.tsfile in this directory
pnpmfor managing frontend dependency packages
There are a handful of dependency packages that we use directly in the frontend.
picocssfor basic CSS while developinglitfor a simple but powerful wrapper around Web Components
Lastly, there are some dependencies that only benefit development
tsservercomes bundled with vscode and can be used as an LSP with other editors usingtypescript-language-server- Used for autocomplete, syntax highlighting, etc.
- This can be configured with the
tsconfig.jsonfile in the root of the project- NOTE: your configuration should align with the
viteconfig so you get in-editor feedback that aligns with how the build will be done.
- NOTE: your configuration should align with the
Development
Ideally, you would use the frontend in the wails app as the frontend depends on the Go bindings generated by Wails.
You can do this by running wails dev in the root of the YellowJacket repo.
If you want to run the frontend standalone, make sure the Wails go bindings have been generated with wails generate modules.
Then, you can run pnpm dev to run the vite dev server.
For more information on what commands are available, refer to package.json.
Code
Web Components
Our frontend is based off of Web Components, a standard that provides native browser encapsulation of components that can include HTML, CSS and Javascript all together.
Instead of writing these components manually in Javascript, we utilize lit as a wrapper library.
Typescript
To better integrate with our tooling and to provide a better developer experience with strong typing, we have written all functional frontend code in Typescript. Vite serves as our Typescript transpiler.
Important Files and Directories
NOTE: most of these directories have aliases defined in tsconfig.json and vite.config.ts so that we may refer to them by shorthand when importing.
index.htmlandindex.jsis the entrypoint for the frontend. The first page that loads.wailsjs/goGo code bindings generated by wails reside herewailsjs/runtimethe Wails runtime code needed to use Wails featuressrcall app code resides heresrc/assetsstatic assets like fonts, images and iconssrc/componentslit components that are used to compose the applicationsrc/pagespages that serve as other entrypoints for the application that can be navigated to