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mirror of https://github.com/home-assistant/frontend.git synced 2026-07-02 12:05:39 +01:00
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Bram Kragten 2c8d6c1a02 Add Playwright e2e tests for demo, test app, and gallery
Adds Playwright end-to-end tests covering three targets:
- the demo build
- a new lightweight test app exercising several scenarios (theming,
  admin/non-admin sidebar, panel navigation, more-info dialog)
- the component gallery

Includes the gulp/rspack build infra for the test app and an "E2E Tests"
GitHub Actions workflow that builds each target once, shares it via
artifacts, and runs the suites on Chromium and mobile Chrome. Browser
install is cached and retried to avoid intermittent download stalls.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-17 10:49:08 +02:00
..
2025-04-10 18:32:38 +02:00

Bundling Home Assistant Frontend

The Home Assistant build pipeline contains various steps to prepare a build.

  • Generating icon files to be included
  • Generating translation files to be included
  • Converting TypeScript, CSS and JSON files to JavaScript
  • Bundling
  • Minifying the files
  • Generating the HTML entrypoint files
  • Generating the service worker
  • Compressing the files

Converting files

Currently in Home Assistant we use a bundler to convert TypeScript, CSS and JSON files to JavaScript files that the browser understands.

We currently rely on Webpack. Both of these programs bundle the converted files in both production and development.

For development, bundling is optional. We just want to get the right files in the browser.

Responsibilities of the converter during development:

  • Convert TypeScript to JavaScript
  • Convert CSS to JavaScript that sets the content as the default export
  • Convert JSON to JavaScript that sets the content as the default export
  • Make sure import, dynamic import and web worker references work
    • Add extensions where missing
    • Resolve absolute package imports
  • Filter out specific imports/packages
  • Replace constants with values

In production, the following responsibilities are added:

  • Minify HTML
  • Bundle multiple imports so that the browser can fetch less files
  • Generate a second version that is ES5 compatible

Configuration for all these steps are specified in bundle.js.