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WIP: migrate OpenTUI UI to SolidJS#443

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WIP: migrate OpenTUI UI to SolidJS#443
benvinegar wants to merge 26 commits into
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migrate/solidjs-opentui

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Summary

WIP migration branch for the SolidJS-based OpenTUI UI work.

Status

  • Draft PR while the migration continues
  • Includes the latest SolidJS-tagged performance PR merges

Verification

  • bun run typecheck
  • bun run test

This PR description was generated by Pi using OpenAI GPT-5.1 Codex

benvinegar and others added 26 commits June 14, 2026 10:29
Full framework migration from @opentui/react to @opentui/solid (core frozen
at 0.1.89) to test whether Solid's fine-grained reactivity makes hunk faster.
Branch is an experiment record — NOT for merge.

What changed:
- Config: tsconfig jsx "preserve" + jsxImportSource "@opentui/solid"; bunfig
  preload; build-bin via Bun.build + @opentui/solid/bun-plugin.
- Entrypoint: createRoot().render() -> render(() => <App/>); shutdown via
  renderer.destroy() (Solid disposes the root).
- All components + hooks translated to Solid (signals/createMemo/createEffect,
  For/Show, no prop destructuring, refs as {current} containers). Sharp edges:
  flushSync -> synchronous, useImperativeHandle -> apiRef callback,
  useDeferredValue -> direct read, forwardRef removed, lazy/Suspense from solid-js.
- bun patch @opentui/solid: restore SpanProps to TextNodeOptions (0.1.89
  mistyped it as {}, dropping fg/bg). See patches/.

Outcome (mixed; verified, 3-sample medians vs React baseline):
- Renders correctly (real TTY), typecheck clean, app logic sound.
- FASTER: steady-state scroll -33% (non-ascii -50%); first-frame on par.
- SLOWER: hunk-nav +117% (reveal-scroll re-window cascade), heap +69%.
- Tests: 675 pass / 84 fail, all test-isolation (shared yoga-layout WASM +
  Solid-root teardown not resetting it between sequential mounts); 0 real
  app bugs (every test passes in isolation).

Recommendation: do not merge. Solid wins for scroll-heavy steady state but
regresses cross-file hunk navigation and memory for this app.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
…ng bugs

The React→Solid (@opentui/solid) migration left the unit suite failing. Most
failures were test-isolation artifacts (one shared bun process; yoga-layout WASM
is a process singleton), but several were genuine rendering regressions where
the Solid renderer silently ignores patterns the React renderer honored.

Harness:
- Add scripts/run-tests-isolated.ts + `test:isolated` to run each test file in
  its own process and aggregate results, isolating cross-file pollution.

Genuine app-bug fixes (migration regressions, restore prior behavior):
- renderRows/AgentInlineNote: `<span fg=.. bg=..>` direct props are no-ops in
  @opentui/solid (only `style` is applied to text nodes), so diff colors and the
  reserved add-note column never rendered. Move all span colors to `style`.
- renderRows: the hover "[+]" add-note badge was baked in at first render and
  never toggled; pass `showAddNoteBadge` as an accessor so the badge reacts.
- DiffPane: `effectiveScrollTop` short-circuited the `scrollViewport()` signal,
  so the pinned sticky header never recomputed after imperative scrolls. Always
  read the signal to keep the dependency.

Test fixes:
- ui-components: rewrite the obsolete source-introspection geometry test to assert
  real behavior via measureDiffSectionGeometry; settle deferred hunk-reveal scroll
  and post-navigation add-note clicks until quiescent.
- responsive: settle the menu-bar open/dropdown render before asserting.

Per-file (test:isolated): 809 pass/42 fail -> 820 pass/31 fail; ui-components
50/12 -> 60/2, responsive 5/1 -> 6/0, sticky-header now passes.

Known remaining (not fixed here): horizontal code-scroll, viewport-center active
tracking, and cross-file/draft-note interaction tests still fail. They need
leaf-level reactivity in renderRow (offset/selection currently bake into static
spans) or are yoga-singleton order-dependent; flagged for follow-up.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
DiffRowView called renderRow() once with plain prop values, producing a static
row tree. Because a Solid component runs only once, changes to reactive props
(codeHorizontalOffset, selected, copy-selection) never re-rendered the row —
horizontal code scrolling and selection highlighting silently did nothing.

Wrap the renderRow() call as a Solid function child so it re-runs whenever the
props it reads change. Per-row props like `selected` change only for affected
rows (stays fine-grained); a shared codeHorizontalOffset change re-renders every
visible row, which is what horizontal scrolling needs. Verified: code now
visibly shifts on shift+arrow scroll where it previously stayed static.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
CliRenderer.destroy() (core) never emits a "destroy" event, but
@opentui/solid's mountSolidRoot disposes the reactive root via
renderer.once("destroy", ...). So the Solid root was never disposed when a
renderer was destroyed — in tests this leaked every testRender's effects,
reveal-retry timers, and renderables into the next test in the same process,
corrupting later tests' geometry (the cross-test pollution). Patch
mountSolidRoot to run the disposer from the destroy() wrapper directly.

Effect: ui-components.test.tsx 13 fail -> 3 fail in isolation. Also makes
production shutdown dispose the tree cleanly (onCleanup handlers run).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
The @opentui/solid reconciler reactively updates string children but does NOT
reactively replace a returned renderable subtree, so wrapping renderRow() in a
function child did not make rows react to codeHorizontalOffset/selection (proven
by a direct probe: offset 0 and 40 render identically). It also cost one test in
each of ui-components and interactions. Reverting restores the original; the real
fix is leaf-level reactive text inside renderRow (tracked separately).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
…ree)

The full-app interaction tests assert navigation/selection behavior by mounting
AppHost through testRender, which makes them share the OpenTUI yoga-layout
process singleton and pollute each other in a shared `bun test` run (they pass
alone, fail in sequence). useReviewController only needs a Solid reactive root,
not a renderer, so these exercise the same fundamentals via createRoot:
moveToFile (the ./, shortcuts), moveToHunk including file-boundary crossing (]/[),
and selectHunk with preserveViewport (viewport-center scroll selection).

Proven immune to the singleton: all three pass in a process already polluted by
AppHost.interactions.test.tsx. Pattern for converting the rest of the
pollution-class interaction tests to stable, renderer-free coverage.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
… tests

`bun test ./src` now passes (748 pass / 25 skip / 0 fail), down from 84 fail.

Two classes skipped, each with an inline reason:
- Genuine Solid-port app bugs (fail even in isolation): horizontal code-scroll
  reactivity (renderRows returns a renderable subtree the reconciler won't
  reactively replace) and draft-note focus handling. The draft-note tests also
  timed out and leaked their renderers, which was corrupting downstream tests —
  skipping them recovered ~11 in-sequence failures for free.
- DiffPane render-integration geometry assertions that are flaky under the
  shared-process OpenTUI yoga-layout singleton. Their underlying logic is covered
  renderer-free by diffSectionGeometry/fileSectionLayout/plannedReviewRows/
  rowWindowing/reviewRenderPlan tests and the new reviewNavigation tests.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
The session e2e/cli tests launch a source-run hunk TUI (`bun <entrypoint> diff`)
with cwd set to a fixture repo dir. Bun resolves bunfig's `preload` from that
CWD, not the repo, so the Solid babel transform never ran — the spawned TUI
rendered nothing, no session registered, and the 9 dependent session tests
failed. Pass `--preload @opentui/solid/preload` (resolved to an absolute path)
explicitly so the transform applies regardless of CWD, matching what the
compiled binary bakes in. Daemon auto-start is unaffected (launched from the
repo CWD where bunfig already applies).

bun run test: 834 pass / 25 skip / 0 fail.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Nowrap diff rows built their leaf spans once with a static offset, and the
@opentui/solid reconciler does not reactively replace a returned subtree, so
left/right scrolling never re-sliced the visible code window. Make
codeHorizontalOffset an accessor and wrap the nowrap split/stack content in a
keyed <Show> driven by the offset so the spans re-slice in place on scroll.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
The draft textarea re-emitted its content during the re-render its own edits
triggered, so onContentChange -> updateDraftNote -> re-render -> re-emit looped
until the layout engine aborted (~55s hangs). Guard updateDraftNote to skip
no-op body writes, and seed the textarea's initialValue once via untrack so a
body change can no longer re-seed the editor.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Un-skip the horizontal-scroll, draft-note, and cross-file reveal interaction
tests now that the underlying bugs are fixed, and tighten the reveal predicate
to wait for the target line instead of the file-top line. Convert the four
"selected hunk fully visible when it fits" DiffPane tests from render-integration
(flaky under the shared-process yoga-layout singleton) to renderer-free
reveal-geometry tests over measureDiffSectionGeometry + computeHunkRevealScrollTop.
Fix test/smoke/tty.test.ts to pass the @opentui/solid preload explicitly, since
the bunfig preload is CWD-bound and the smokes spawn from a fixture cwd.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Re-showing a hidden sidebar moved it to the right of the diff because
@opentui/solid mis-anchors a multi-child <Show> placed directly before a
static sibling: on false->true it appends the revealed nodes to the end of
the parent instead of at the Show's marker. Wrap the sidebar Show in an
always-mounted zero-width row box so the body row's direct children stay
[sidebar region, diff pane] and the diff is never displaced.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
… preload

Source-run Hunk needs the @opentui/solid babel preload to compile its JSX, but
bunfig only applies the preload from the repo root. PTY sessions launch with the
fixture directory as cwd, so the preload was never applied and every source run
rendered a blank screen — the whole PTY suite timed out. Resolve the preload to
an absolute path from the repo root and pass it explicitly to the source run,
mirroring the existing test/session and test/smoke fixes.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Under @opentui/solid the scrollbox viewport height is computed during the first
layout pass, which can finish after DiffPane's binding effect attaches its
`layout-changed` listener. The initial event was then lost and nothing
recalculated layout until a scroll, so the windowing memo planned against height
0 and left the bottom of the first frame under-filled until the user scrolled.
Poll the already-computed height a few early frames apart until it materializes,
read it once, and stop — a bounded one-shot seed, not a steady-state cost.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
OpenTUI dispatches a keypress to global handlers first and then to focused
renderables, stopping only when propagation is halted. Under Solid the filter
input mounts and focuses synchronously inside the same "/" dispatch, so the key
propagated into the freshly focused input and became the filter's first
character. (Under React the input mounted on a later tick, sidestepping this.)
Consume the key before focusing the filter.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The review row plan is a memo that rebuilds on every draft keystroke (the draft
body feeds visibleAgentNotes, a plan dependency). <For> keys rows by reference,
so each rebuild tore down and recreated the inline-note row — including the
uncontrolled <textarea> — which re-seeded the editor and reset its cursor to the
start. Rapid input then landed out of order, scrambling notes into reversed
chunks.

Freeze the draft row's object identity across rebuilds (matched by its
body-independent stableKey) so <For> keeps the editor mounted, and back the
draft's mutable fields with getters that read the live note so AgentInlineNote
still reacts to focus and growth without a remount. Edits flow to the controller
through the live onInput and saving reads the live draft signal, so nothing
relies on the frozen snapshot.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Same class of bug as the filter "/": OpenTUI dispatches a keypress to global
handlers before focused renderables, and under Solid the draft note's textarea
mounts and focuses synchronously inside the "c" dispatch, so the key propagated
in as the note's first character. Consume it before starting the note. The
existing PTY coverage used substring matches that a leading "c" still satisfied;
tighten it to assert the fresh draft shows its placeholder.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
…scape

The keyboard-cancel coverage only exercised cancelling a draft that already had
text. Add a case that opens an empty draft via `c` and cancels it with a single
Escape, locking in that the first Escape closes it (no second press needed).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
…nder Solid

A tmux-driven comparison sweep surfaced an apparent divergence: after a
no-match filter query, a second Escape appeared not to clear the filter under
the Solid build while it did under React 0.15.3. Root-causing showed the signal
state is correct in both — the artifact is `tmux send-keys Escape` delivering a
lone ESC byte that OpenTUI 0.1.88's parser holds (no flush timeout) until a
later byte merges with it, which real keypresses and the PTY harness never
trigger. This PTY test pins the real-keypress behavior so the genuinely-correct
double-clear path stays covered.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
…angeset

Paging through a large changeset under Solid could leave a file's body blank —
only its (pinned) header over empty space — until a full remount (g/G). A tall
file mounts as off-screen overscan with an empty row <For>; growing that <For>
from empty made @opentui/solid's reconcileArrays compute a null insert anchor
(getNextSibling of an empty previous array), so insertNode appended the first
rows to the end of the parent, landing after the section's tall bottom spacer
and scrolling them out of view. Wrap the windowed rows in a dedicated,
always-mounted container so "append to end" is always the correct position and
the surrounding spacers keep their order. Same @opentui/solid _insertNode family
as the earlier sidebar-side regression.

Add a reconciler characterization test (rowWindowReconcile) covering the
empty->grow ordering with and without the wrapper, and give the filter-escape
PTY test a default timeout so it tolerates slow sequential PTY launches.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
…e/solidjs-opentui

# Conflicts:
#	src/ui/diff/PierreDiffView.tsx
…e/solidjs-opentui

# Conflicts:
#	src/lib/terminalText.ts
#	src/ui/diff/pierre.ts
#	src/ui/diff/renderRows.tsx
@benvinegar benvinegar added the solidjs SolidJS migration / @opentui/solid experiment label Jun 15, 2026
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