refactor(core): move ColorSchemeSetValueContext to singletons

packages/sanity/src/_singletons/index.ts

@@ -25,4 +25,5 @@ export * from './form/studio/ValidationContext'
 export * from './i18n/LocaleContext'
 export * from './presence/FormFieldPresenceContext'
 export * from './store/_legacy/ResourceCacheContext'
+export * from './studio/ColorSchemeSetValueContext'
 export * from './studio/ColorSchemeValueContext'

packages/sanity/src/_singletons/studio/ColorSchemeSetValueContext.ts

@@ -0,0 +1,11 @@
+import {createContext} from 'react'
+import type {StudioThemeColorSchemeKey} from 'sanity'
+
+/**
+ * The setter for ColorSchemeValueContext, in a separate context to avoid unnecessary re-renders
+ * If set to false then the UI should adjust to reflect that the Studio can't change the color scheme
+ * @internal
+ */
+export const ColorSchemeSetValueContext = createContext<
+  ((nextScheme: StudioThemeColorSchemeKey) => void) | false | null
+>(null)

packages/sanity/src/core/studio/StudioThemeProvider.tsx

@@ -3,11 +3,10 @@
 import {LayerProvider, ThemeProvider} from '@sanity/ui'
 import {type RootTheme} from '@sanity/ui/theme'
 import {type ReactNode} from 'react'
-import {ColorSchemeValueContext} from 'sanity/_singletons'
+import {ColorSchemeSetValueContext, ColorSchemeValueContext} from 'sanity/_singletons'
 
 import {defaultTheme, type StudioTheme} from '../theme'
 import {useActiveWorkspace} from './activeWorkspaceMatcher'
-import {ColorSchemeSetValueContext} from './colorScheme'
 
 interface StudioThemeProviderProps {
   children: ReactNode

packages/sanity/src/core/studio/colorScheme.tsx

@@ -2,27 +2,17 @@ import {DesktopIcon, MoonIcon, SunIcon} from '@sanity/icons'
 import {studioTheme, type ThemeColorSchemeKey, ThemeProvider, usePrefersDark} from '@sanity/ui'
 import {
   type ComponentType,
-  createContext,
   type ReactNode,
   useContext,
   useEffect,
   useMemo,
   useSyncExternalStore,
 } from 'react'
-import {ColorSchemeValueContext} from 'sanity/_singletons'
+import {ColorSchemeSetValueContext, ColorSchemeValueContext} from 'sanity/_singletons'
 
 import {type TFunction} from '../i18n'
 import {type StudioThemeColorSchemeKey} from '../theme/types'
 
-/**
- * The setter for ColorSchemeValueContext, in a separate context to avoid unnecessary re-renders
- * If set to false then the UI should adjust to reflect that the Studio can't change the color scheme
- * @internal
- */
-export const ColorSchemeSetValueContext = createContext<
-  ((nextScheme: StudioThemeColorSchemeKey) => void) | false | null
->(null)
-
 /** @internal */
 function useSystemScheme(): ThemeColorSchemeKey {
   const prefersDark = usePrefersDark()