fix react doctor warnings

Author: charlesvien

packages/ui/src/features/sessions/components/ReasoningLevelDropdown.tsx

@@ -24,7 +24,7 @@ import {
 } from "@posthog/quill";
 import { Badge } from "@posthog/ui/primitives/Badge";
 import { openUrlInBrowser } from "@posthog/ui/utils/browser";
-import { Fragment, useEffect, useRef, useState } from "react";
+import { Fragment, useRef, useState } from "react";
 
 export interface ReasoningLevelOption {
   value: string;
@@ -230,27 +230,24 @@ export function ReasoningSliderFace({
   const matchedIndex = stops.findIndex((stop) => stop.key === currentKey);
   const activeIndex =
     matchedIndex >= 0 ? matchedIndex : Math.floor((stops.length - 1) / 2);
-  // Continuous position so the thumb tracks the pointer fluidly; the nearest
-  // notch is applied live and the thumb snaps to it on release.
-  const [position, setPosition] = useState<number>(activeIndex);
-  const draggingRef = useRef(false);
+  // Continuous drag position so the thumb tracks the pointer fluidly; outside
+  // a drag the thumb derives from the current selection, so releasing snaps
+  // it to the notch the live-applied selection landed on.
+  const [dragPosition, setDragPosition] = useState<number | null>(null);
+  const position = dragPosition ?? activeIndex;
   const nearestIndex = Math.min(
     stops.length - 1,
     Math.max(0, Math.round(position)),
   );
 
-  useEffect(() => {
-    if (!draggingRef.current) setPosition(activeIndex);
-  }, [activeIndex]);
-
   const applyNotch = (notch: number) => {
     const stop = stops[notch];
     if (stop && stop.key !== currentKey) onSelect(stop.key);
   };
 
   const nudge = (delta: number) => {
     const next = Math.min(stops.length - 1, Math.max(0, nearestIndex + delta));
-    setPosition(next);
+    setDragPosition(null);
     applyNotch(next);
   };
 
@@ -348,21 +345,18 @@ export function ReasoningSliderFace({
           onValueChange={(next: number | readonly number[]) => {
             const raw = Array.isArray(next) ? next[0] : next;
             if (typeof raw !== "number") return;
-            draggingRef.current = true;
-            setPosition(raw);
+            setDragPosition(raw);
             // Applied per notch crossing so the trigger pill tracks the drag.
             applyNotch(Math.round(raw));
           }}
           onValueCommitted={(next: number | readonly number[]) => {
             const raw = Array.isArray(next) ? next[0] : next;
-            draggingRef.current = false;
-            if (typeof raw !== "number") return;
-            const notch = Math.min(
-              stops.length - 1,
-              Math.max(0, Math.round(raw)),
-            );
-            setPosition(notch);
-            applyNotch(notch);
+            if (typeof raw === "number") {
+              applyNotch(
+                Math.min(stops.length - 1, Math.max(0, Math.round(raw))),
+              );
+            }
+            setDragPosition(null);
           }}
         />
         <div className="-translate-y-1/2 pointer-events-none absolute inset-x-2 top-1/2 flex justify-between">

packages/ui/src/features/sessions/components/ReasoningLevelSelector.tsx

@@ -107,7 +107,7 @@ function AnimatedHeight({ children }: { children: React.ReactNode }) {
   );
 }
 
-export function toDropdownOptions(
+function toDropdownOptions(
   option: SessionConfigOption,
 ): ReasoningLevelOption[] {
   if (option.type !== "select") return [];
@@ -269,6 +269,7 @@ export function ReasoningLevelSelector({
         valueLabel:
           options.find((entry) => entry.value === option.currentValue)?.label ??
           option.currentValue,
+        defaultValue: options.find((entry) => entry.isDefault)?.value,
         options,
       },
     ];
@@ -294,11 +295,8 @@ export function ReasoningLevelSelector({
         }
       }
       for (const row of toggleRows) {
-        const rowDefault = row.options.find(
-          (option) => option.isDefault,
-        )?.value;
-        if (rowDefault && rowDefault !== row.value) {
-          onConfigOptionChange?.(row.id, rowDefault);
+        if (row.defaultValue && row.defaultValue !== row.value) {
+          onConfigOptionChange?.(row.id, row.defaultValue);
         }
       }
       if (fastSelect && fastSelect.currentValue !== "off") {
@@ -451,8 +449,8 @@ export function ReasoningLevelSelector({
                           ? modelGroups.map((group, index) => (
                               <Fragment key={group.group}>
                                 {index > 0 && <DropdownMenuSeparator />}
-                                {[...group.options]
-                                  .sort((a, b) =>
+                                {group.options
+                                  .toSorted((a, b) =>
                                     compareModelsForPicker(a.value, b.value),
                                   )
                                   .map((model) => (
@@ -463,8 +461,8 @@ export function ReasoningLevelSelector({
                                   ))}
                               </Fragment>
                             ))
-                          : [...modelEntries]
-                              .sort((a, b) =>
+                          : modelEntries
+                              .toSorted((a, b) =>
                                 compareModelsForPicker(a.value, b.value),
                               )
                               .map((model) => (