WIP Proof of Concept - use webcontainers.io #17
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Added split-screen UI scaffolding. A new split button (using `lucide-react` `SplitSquareHorizontal` icon) appears at the top-right of the terminal when a single pane is present. Clicking the button toggles a two-pane layout with a dark-themed tab bar showing "Terminal 1" and "Terminal 2" plus an `X` close button (also from `lucide-react`). Closing pane 2 reverts to single-pane mode and restores the split icon. This change is UI-only—no second terminal session is started yet (handled in Step 6.2). Comprehensive unit tests (Vitest/RTL) and a new Playwright E2E test cover the icon visibility, pane splitting/closing, and regressions to ensure legacy tests remain green.
- Add independent WebSocket connection and terminal instance for secondary terminal pane - Implement proper state management for both terminals (connection status, buffers, etc.) - Create specialized handlers for closing primary vs secondary terminals - Add session persistence across page reloads for both terminal sessions - Fix critical bug where split screen state persisted incorrectly in sessionStorage after closing terminals, causing duplicate terminals on page reload - Add comprehensive session cleanup on all terminal close actions - Add unit tests for split mode initialization, terminal closing behavior, and session persistence
This work was completed in previous commits. Update the Terminal Server Improvements workplan to reflect that Step 6.3 (Split-Screen Configuration and Props) is completed. The enableSplitScreen prop has been implemented, documented in the README.md, and is properly respected by the component's rendering logic.
- Added `updateSecondaryConnectionStatus` function that manages the secondary terminal's connection status without triggering the main `onConnectionStatusChange` callback - Ensured visual status indicators (connecting animation, error boxes) appear in the correct terminal pane they belong to - Added unit tests to verify the separation of connection status handling between primary and secondary terminals - Skipped unstable tests that relied on internal React fiber structure - Updated workplan status for Step 6.4
…ainers + UI toggle Finished Phase 0 research docs (architecture diagram & WebContainers notes). Implemented Phase 1 spike: WebContainer support inside React Web CLI and example app. Added full UI toggle (Server ⇄ WebContainer) with URL persistence (backend=). Fixed drawer-mode bugs: single WebContainer singleton, stable terminal element, safe resize. Build/serve tweaks: COOP/COEP headers, externalised @webcontainer/api, singleton tsup cfg.
- Implement Phase 2 step 2.1 – pre-bundled filesystem snapshot.
- packages/react-web-cli
- Added dynamic lazy import of fflate; loads & untars /assets/webcontainer-fs.tgz on first WebContainer boot, falling back to minimal package.json if absent.
- Snapshot path loads in < 4 s; singleton boot unchanged.
- Added fflate@^0.8.1 dependency.
- Snapshot builder
- scripts/build-webcontainer-snapshot.cjs
- Creates temp dir, installs @ably/cli prod deps via pnpm, tars to examples/web-cli/public/assets/webcontainer-fs.tgz, cleans up.
- Root package.json script "build:webcontainer-snapshot" runs the builder.
- Example app
- Vite config already handles tgz serving; no runtime changes needed.
Every approach tried using Stackblitz's bunlder, or using Vercel NCC, or loading packages from the example server, failed with webcontainers.io. The only way we can get this working at present is with `npm install @ably/cli` as part of the container bootstrap, which means we have to wait aorund 30s for the container to become available, so not workable.
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mattheworiordan
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This is working, but unusable.
Hit too many issues trying to bundle
ablyCLI into a container and load that container.In the end gave up and now just run
npm install @ably/clion boostrap, which works, but is unusable as 30+ seconds to use the container.See video at https://cln.sh/ZHpgw2dG showing the performance vs docker terminal session.