From da952135cabba2926698298797cd301e7adaf48c Mon Sep 17 00:00:00 2001
From: Adam <2363879+adamdotdevin@users.noreply.github.com>
Date: Thu, 12 Feb 2026 11:26:19 -0600
Subject: chore(app): refactor for better solidjs hygiene (#13344)

---
 packages/app/src/pages/session/file-tabs.tsx       | 27 +++++++++++++++++++---
 packages/app/src/pages/session/helpers.ts          |  9 +++++---
 .../app/src/pages/session/session-side-panel.tsx   |  6 +++--
 packages/app/src/pages/session/terminal-panel.tsx  | 16 ++++++++-----
 .../src/pages/session/use-session-hash-scroll.ts   | 17 ++++++++------
 5 files changed, 54 insertions(+), 21 deletions(-)

(limited to 'packages/app/src/pages/session')

diff --git a/packages/app/src/pages/session/file-tabs.tsx b/packages/app/src/pages/session/file-tabs.tsx
index c94c0ff35..5b3f57dbe 100644
--- a/packages/app/src/pages/session/file-tabs.tsx
+++ b/packages/app/src/pages/session/file-tabs.tsx
@@ -1,5 +1,5 @@
 import { type ValidComponent, createEffect, createMemo, For, Match, on, onCleanup, Show, Switch } from "solid-js"
-import { createStore } from "solid-js/store"
+import { createStore, produce } from "solid-js/store"
 import { Dynamic } from "solid-js/web"
 import { checksum } from "@opencode-ai/util/encode"
 import { decode64 } from "@/utils/base64"
@@ -112,6 +112,12 @@ export function FileTabContent(props: {
     return props.comments.list(p)
   })
 
+  const commentLayout = createMemo(() => {
+    return fileComments()
+      .map((comment) => `${comment.id}:${comment.selection.start}:${comment.selection.end}`)
+      .join("|")
+  })
+
   const commentedLines = createMemo(() => fileComments().map((comment) => comment.selection))
 
   const [note, setNote] = createStore({
@@ -164,7 +170,22 @@ export function FileTabContent(props: {
       next[comment.id] = markerTop(el, marker)
     }
 
-    setNote("positions", next)
+    const removed = Object.keys(note.positions).filter((id) => next[id] === undefined)
+    const changed = Object.entries(next).filter(([id, top]) => note.positions[id] !== top)
+    if (removed.length > 0 || changed.length > 0) {
+      setNote(
+        "positions",
+        produce((draft) => {
+          for (const id of removed) {
+            delete draft[id]
+          }
+
+          for (const [id, top] of changed) {
+            draft[id] = top
+          }
+        }),
+      )
+    }
 
     const range = note.commenting
     if (!range) {
@@ -186,7 +207,7 @@ export function FileTabContent(props: {
   }
 
   createEffect(() => {
-    fileComments()
+    commentLayout()
     scheduleComments()
   })
 
diff --git a/packages/app/src/pages/session/helpers.ts b/packages/app/src/pages/session/helpers.ts
index dcf2c8784..6ead7a7f2 100644
--- a/packages/app/src/pages/session/helpers.ts
+++ b/packages/app/src/pages/session/helpers.ts
@@ -1,4 +1,5 @@
 import type { CommandOption } from "@/context/command"
+import { batch } from "solid-js"
 
 export const focusTerminalById = (id: string) => {
   const wrapper = document.getElementById(`terminal-wrapper-${id}`)
@@ -27,9 +28,11 @@ export const createOpenReviewFile = (input: {
   loadFile: (path: string) => void
 }) => {
   return (path: string) => {
-    input.showAllFiles()
-    input.openTab(input.tabForPath(path))
-    input.loadFile(path)
+    batch(() => {
+      input.showAllFiles()
+      input.openTab(input.tabForPath(path))
+      input.loadFile(path)
+    })
   }
 }
 
diff --git a/packages/app/src/pages/session/session-side-panel.tsx b/packages/app/src/pages/session/session-side-panel.tsx
index 15ad90ffe..33954f64a 100644
--- a/packages/app/src/pages/session/session-side-panel.tsx
+++ b/packages/app/src/pages/session/session-side-panel.tsx
@@ -72,6 +72,8 @@ export function SessionSidePanel(props: {
   activeDiff?: string
   focusReviewDiff: (path: string) => void
 }) {
+  const openedTabs = createMemo(() => props.openedTabs())
+
   return (
     <Show when={props.open}>
       <aside
@@ -140,8 +142,8 @@ export function SessionSidePanel(props: {
                             </div>
                           </Tabs.Trigger>
                         </Show>
-                        <SortableProvider ids={props.openedTabs()}>
-                          <For each={props.openedTabs()}>
+                        <SortableProvider ids={openedTabs()}>
+                          <For each={openedTabs()}>
                             {(tab) => <SortableTab tab={tab} onTabClose={props.tabs().close} />}
                           </For>
                         </SortableProvider>
diff --git a/packages/app/src/pages/session/terminal-panel.tsx b/packages/app/src/pages/session/terminal-panel.tsx
index d3475c714..7ec4356b1 100644
--- a/packages/app/src/pages/session/terminal-panel.tsx
+++ b/packages/app/src/pages/session/terminal-panel.tsx
@@ -1,4 +1,4 @@
-import { For, Show } from "solid-js"
+import { For, Show, createMemo } from "solid-js"
 import { Tabs } from "@opencode-ai/ui/tabs"
 import { ResizeHandle } from "@opencode-ai/ui/resize-handle"
 import { IconButton } from "@opencode-ai/ui/icon-button"
@@ -8,7 +8,7 @@ import type { DragEvent } from "@thisbeyond/solid-dnd"
 import { ConstrainDragYAxis } from "@/utils/solid-dnd"
 import { SortableTerminalTab } from "@/components/session"
 import { Terminal } from "@/components/terminal"
-import { useTerminal, type LocalPTY } from "@/context/terminal"
+import { useTerminal } from "@/context/terminal"
 import { useLanguage } from "@/context/language"
 import { useCommand } from "@/context/command"
 import { terminalTabLabel } from "@/pages/session/terminal-label"
@@ -28,6 +28,10 @@ export function TerminalPanel(props: {
   handleTerminalDragEnd: () => void
   onCloseTab: () => void
 }) {
+  const all = createMemo(() => props.terminal.all())
+  const ids = createMemo(() => all().map((pty) => pty.id))
+  const byId = createMemo(() => new Map(all().map((pty) => [pty.id, pty])))
+
   return (
     <Show when={props.open}>
       <div
@@ -86,8 +90,8 @@ export function TerminalPanel(props: {
                 class="!h-auto !flex-none"
               >
                 <Tabs.List class="h-10">
-                  <SortableProvider ids={props.terminal.all().map((t: LocalPTY) => t.id)}>
-                    <For each={props.terminal.all()}>
+                  <SortableProvider ids={ids()}>
+                    <For each={all()}>
                       {(pty) => (
                         <SortableTerminalTab
                           terminal={pty}
@@ -117,7 +121,7 @@ export function TerminalPanel(props: {
                 </Tabs.List>
               </Tabs>
               <div class="flex-1 min-h-0 relative">
-                <For each={props.terminal.all()}>
+                <For each={all()}>
                   {(pty) => (
                     <div
                       id={`terminal-wrapper-${pty.id}`}
@@ -142,7 +146,7 @@ export function TerminalPanel(props: {
               <Show when={props.activeTerminalDraggable()}>
                 {(draggedId) => {
                   return (
-                    <Show when={props.terminal.all().find((t: LocalPTY) => t.id === draggedId())}>
+                    <Show when={byId().get(draggedId())}>
                       {(t) => (
                         <div class="relative p-1 h-10 flex items-center bg-background-stronger text-14-regular">
                           {terminalTabLabel({
diff --git a/packages/app/src/pages/session/use-session-hash-scroll.ts b/packages/app/src/pages/session/use-session-hash-scroll.ts
index 8952bbd98..555761ad1 100644
--- a/packages/app/src/pages/session/use-session-hash-scroll.ts
+++ b/packages/app/src/pages/session/use-session-hash-scroll.ts
@@ -1,4 +1,4 @@
-import { createEffect, on, onCleanup } from "solid-js"
+import { createEffect, createMemo, on, onCleanup } from "solid-js"
 import { UserMessage } from "@opencode-ai/sdk/v2"
 
 export const messageIdFromHash = (hash: string) => {
@@ -26,6 +26,10 @@ export const useSessionHashScroll = (input: {
   scheduleScrollState: (el: HTMLDivElement) => void
   consumePendingMessage: (key: string) => string | undefined
 }) => {
+  const visibleUserMessages = createMemo(() => input.visibleUserMessages())
+  const messageById = createMemo(() => new Map(visibleUserMessages().map((m) => [m.id, m])))
+  const messageIndex = createMemo(() => new Map(visibleUserMessages().map((m, i) => [m.id, i])))
+
   const clearMessageHash = () => {
     if (!window.location.hash) return
     window.history.replaceState(null, "", window.location.href.replace(/#.*$/, ""))
@@ -47,10 +51,9 @@ export const useSessionHashScroll = (input: {
   }
 
   const scrollToMessage = (message: UserMessage, behavior: ScrollBehavior = "smooth") => {
-    input.setActiveMessage(message)
+    if (input.currentMessageId() !== message.id) input.setActiveMessage(message)
 
-    const msgs = input.visibleUserMessages()
-    const index = msgs.findIndex((m) => m.id === message.id)
+    const index = messageIndex().get(message.id) ?? -1
     if (index !== -1 && index < input.turnStart()) {
       input.setTurnStart(index)
       input.scheduleTurnBackfill()
@@ -107,7 +110,7 @@ export const useSessionHashScroll = (input: {
     const messageId = messageIdFromHash(hash)
     if (messageId) {
       input.autoScroll.pause()
-      const msg = input.visibleUserMessages().find((m) => m.id === messageId)
+      const msg = messageById().get(messageId)
       if (msg) {
         scrollToMessage(msg, behavior)
         return
@@ -144,14 +147,14 @@ export const useSessionHashScroll = (input: {
   createEffect(() => {
     if (!input.sessionID() || !input.messagesReady()) return
 
-    input.visibleUserMessages().length
+    visibleUserMessages()
     input.turnStart()
 
     const targetId = input.pendingMessage() ?? messageIdFromHash(window.location.hash)
     if (!targetId) return
     if (input.currentMessageId() === targetId) return
 
-    const msg = input.visibleUserMessages().find((m) => m.id === targetId)
+    const msg = messageById().get(targetId)
     if (!msg) return
 
     if (input.pendingMessage() === targetId) input.setPendingMessage(undefined)
-- 
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