Fix incorrect initial values with useFacetMemo.

packages/@react-facet/core/src/components/Map.tsx

@@ -1,4 +1,4 @@
-import React, { ReactElement, useDeferredValue } from 'react'
+import React, { ReactElement } from 'react'
 import { useFacetMemo } from '../hooks/useFacetMemo'
 import { useFacetUnwrap } from '../hooks/useFacetUnwrap'
 import { useFacetMap } from '../hooks/useFacetMap'
@@ -12,7 +12,7 @@ export type MapProps<T> = {
 
 export const Map = <T,>({ array, children, equalityCheck }: MapProps<T>) => {
   // When mounting lists, we always want to defer
-  const countValue = useDeferredValue(useFacetUnwrap(useFacetMap((array) => array.length, [], [array])))
+  const countValue = useFacetUnwrap(useFacetMap((array) => array.length, [], [array]))
 
   return (
     <>

packages/@react-facet/core/src/components/Mount.tsx

@@ -1,4 +1,4 @@
-import { ReactElement, useDeferredValue } from 'react'
+import { ReactElement } from 'react'
 import { useFacetUnwrap } from '../hooks/useFacetUnwrap'
 import { Facet } from '../types'
 
@@ -9,6 +9,6 @@ type MountProps = {
 }
 
 export const Mount = ({ when, children, condition = true }: MountProps) => {
-  const whenValue = useDeferredValue(useFacetUnwrap(when))
+  const whenValue = useFacetUnwrap(when)
   return whenValue === condition ? children : null
 }

packages/@react-facet/core/src/mapFacets/mapFacetArrayCached.ts

@@ -7,9 +7,11 @@ export function mapFacetArrayCached<M>(
   fn: (...value: unknown[]) => M | NoValue,
   equalityCheck?: EqualityCheck<M>,
 ): Facet<M> {
+  const initialValues = facets.map((facet) => facet.get())
+  const hasAllValues = initialValues.reduce<boolean>((prev, curr) => prev && curr !== NO_VALUE, true)
   return createFacet<M>({
     // pass the equalityCheck to the mapIntoObserveArray to prevent even triggering the observable
     startSubscription: mapIntoObserveArray(facets, fn, equalityCheck),
-    initialValue: NO_VALUE,
+    initialValue: hasAllValues ? fn(...initialValues) : NO_VALUE,
   })
 }

packages/@react-facet/core/src/mapFacets/mapFacetSingleCached.ts

@@ -7,9 +7,10 @@ export function mapFacetSingleCached<T, M>(
   fn: (value: T) => M | NoValue,
   equalityCheck?: EqualityCheck<M>,
 ): Facet<M> {
+  const initialValue = facets.get()
   return createFacet<M>({
     // pass the equalityCheck to the mapIntoObserveSingle to prevent even triggering the observable
     startSubscription: mapIntoObserveSingle(facets, fn, equalityCheck),
-    initialValue: NO_VALUE,
+    initialValue: initialValue !== NO_VALUE ? fn(initialValue) : NO_VALUE,
   })
 }

packages/@react-facet/dom-fiber/package.json

@@ -41,7 +41,8 @@
     "prepublish": "yarn build"
   },
   "dependencies": {
-    "react-reconciler": "^0.28.0"
+    "react-reconciler": "^0.28.0",
+    "scheduler": "^0.22.0"
   },
   "peerDependencies": {
     "@react-facet/core": "0.5.3",

packages/@react-facet/dom-fiber/src/index.ts

@@ -5,6 +5,9 @@ export * from './types'
 export * from './createPortal'
 export * from './createFiberRoot'
 export * from './createReconciler'
+import scheduler from 'scheduler'
+
+// scheduler.unstable_forceFrameRate(120)
 
 export type RootType = {
   render(children: ReactElement): void