[metadata] Merge the metadata resolve apis into one api (vercel#74191)

Author: huozhi

packages/next/src/lib/metadata/metadata.tsx

@@ -21,10 +21,9 @@ import {
 } from './generate/opengraph'
 import { IconsMetadata } from './generate/icons'
 import {
-  resolveMetadataItems,
-  accumulateMetadata,
-  accumulateViewport,
   type MetadataErrorType,
+  resolveMetadata,
+  resolveViewport,
 } from './resolve-metadata'
 import { MetaFilter } from './generate/meta'
 import type {
@@ -196,24 +195,14 @@ async function getResolvedMetadataImpl(
   errorType?: MetadataErrorType | 'redirect'
 ): Promise<React.ReactNode> {
   const errorConvention = errorType === 'redirect' ? undefined : errorType
-
-  const metadataItems = await resolveMetadataItems(
+  return renderMetadata(
     tree,
     searchParams,
-    errorConvention,
     getDynamicParamFromSegment,
+    metadataContext,
     createServerParamsForMetadata,
-    workStore
-  )
-  const elements: Array<React.ReactNode> = createMetadataElements(
-    await accumulateMetadata(metadataItems, metadataContext)
-  )
-  return (
-    <>
-      {elements.map((el, index) => {
-        return cloneElement(el as React.ReactElement, { key: index })
-      })}
-    </>
+    workStore,
+    errorConvention
   )
 }
 
@@ -227,24 +216,14 @@ async function getNotFoundMetadataImpl(
   workStore: WorkStore
 ): Promise<React.ReactNode> {
   const notFoundErrorConvention = 'not-found'
-  const notFoundMetadataItems = await resolveMetadataItems(
+  return renderMetadata(
     tree,
     searchParams,
-    notFoundErrorConvention,
     getDynamicParamFromSegment,
+    metadataContext,
     createServerParamsForMetadata,
-    workStore
-  )
-
-  const elements: Array<React.ReactNode> = createMetadataElements(
-    await accumulateMetadata(notFoundMetadataItems, metadataContext)
-  )
-  return (
-    <>
-      {elements.map((el, index) => {
-        return cloneElement(el as React.ReactElement, { key: index })
-      })}
-    </>
+    workStore,
+    notFoundErrorConvention
   )
 }
 
@@ -258,18 +237,55 @@ async function getResolvedViewportImpl(
   errorType?: MetadataErrorType | 'redirect'
 ): Promise<React.ReactNode> {
   const errorConvention = errorType === 'redirect' ? undefined : errorType
+  return renderViewport(
+    tree,
+    searchParams,
+    getDynamicParamFromSegment,
+    createServerParamsForMetadata,
+    workStore,
+    errorConvention
+  )
+}
 
-  const metadataItems = await resolveMetadataItems(
+const getNotFoundViewport = cache(getNotFoundViewportImpl)
+async function getNotFoundViewportImpl(
+  tree: LoaderTree,
+  searchParams: Promise<ParsedUrlQuery>,
+  getDynamicParamFromSegment: GetDynamicParamFromSegment,
+  createServerParamsForMetadata: CreateServerParamsForMetadata,
+  workStore: WorkStore
+): Promise<React.ReactNode> {
+  const notFoundErrorConvention = 'not-found'
+  return renderViewport(
     tree,
     searchParams,
-    errorConvention,
     getDynamicParamFromSegment,
     createServerParamsForMetadata,
-    workStore
+    workStore,
+    notFoundErrorConvention
   )
-  const elements: Array<React.ReactNode> = createViewportElements(
-    await accumulateViewport(metadataItems)
+}
+
+async function renderMetadata(
+  tree: LoaderTree,
+  searchParams: Promise<ParsedUrlQuery>,
+  getDynamicParamFromSegment: GetDynamicParamFromSegment,
+  metadataContext: MetadataContext,
+  createServerParamsForMetadata: CreateServerParamsForMetadata,
+  workStore: WorkStore,
+  errorConvention?: MetadataErrorType
+) {
+  const resolvedMetadata = await resolveMetadata(
+    tree,
+    searchParams,
+    errorConvention,
+    getDynamicParamFromSegment,
+    createServerParamsForMetadata,
+    workStore,
+    metadataContext
   )
+  const elements: Array<React.ReactNode> =
+    createMetadataElements(resolvedMetadata)
   return (
     <>
       {elements.map((el, index) => {
@@ -279,26 +295,25 @@ async function getResolvedViewportImpl(
   )
 }
 
-const getNotFoundViewport = cache(getNotFoundViewportImpl)
-async function getNotFoundViewportImpl(
+async function renderViewport(
   tree: LoaderTree,
   searchParams: Promise<ParsedUrlQuery>,
   getDynamicParamFromSegment: GetDynamicParamFromSegment,
   createServerParamsForMetadata: CreateServerParamsForMetadata,
-  workStore: WorkStore
-): Promise<React.ReactNode> {
-  const notFoundErrorConvention = 'not-found'
-  const notFoundMetadataItems = await resolveMetadataItems(
+  workStore: WorkStore,
+  errorConvention?: MetadataErrorType
+) {
+  const notFoundResolvedViewport = await resolveViewport(
     tree,
     searchParams,
-    notFoundErrorConvention,
+    errorConvention,
     getDynamicParamFromSegment,
     createServerParamsForMetadata,
     workStore
   )
 
   const elements: Array<React.ReactNode> = createViewportElements(
-    await accumulateViewport(notFoundMetadataItems)
+    notFoundResolvedViewport
   )
   return (
     <>

packages/next/src/lib/metadata/resolve-metadata.ts

@@ -470,9 +470,7 @@ async function collectMetadata({
   }
 }
 
-const cachedResolveMetadataItems = cache(resolveMetadataItems)
-export { cachedResolveMetadataItems as resolveMetadataItems }
-async function resolveMetadataItems(
+const resolveMetadataItems = cache(async function (
   tree: LoaderTree,
   searchParams: Promise<ParsedUrlQuery>,
   errorConvention: MetadataErrorType | undefined,
@@ -496,7 +494,7 @@ async function resolveMetadataItems(
     createServerParamsForMetadata,
     workStore
   )
-}
+})
 
 async function resolveMetadataItemsImpl(
   metadataItems: MetadataItems,
@@ -901,3 +899,44 @@ export async function accumulateViewport(
   }
   return resolvedViewport
 }
+
+// Exposed API for metadata component, that directly resolve the loader tree and related context as resolved metadata.
+export async function resolveMetadata(
+  tree: LoaderTree,
+  searchParams: Promise<ParsedUrlQuery>,
+  errorConvention: MetadataErrorType | undefined,
+  getDynamicParamFromSegment: GetDynamicParamFromSegment,
+  createServerParamsForMetadata: CreateServerParamsForMetadata,
+  workStore: WorkStore,
+  metadataContext: MetadataContext
+): Promise<ResolvedMetadata> {
+  const metadataItems = await resolveMetadataItems(
+    tree,
+    searchParams,
+    errorConvention,
+    getDynamicParamFromSegment,
+    createServerParamsForMetadata,
+    workStore
+  )
+  return accumulateMetadata(metadataItems, metadataContext)
+}
+
+// Exposed API for viewport component, that directly resolve the loader tree and related context as resolved viewport.
+export async function resolveViewport(
+  tree: LoaderTree,
+  searchParams: Promise<ParsedUrlQuery>,
+  errorConvention: MetadataErrorType | undefined,
+  getDynamicParamFromSegment: GetDynamicParamFromSegment,
+  createServerParamsForMetadata: CreateServerParamsForMetadata,
+  workStore: WorkStore
+): Promise<ResolvedViewport> {
+  const metadataItems = await resolveMetadataItems(
+    tree,
+    searchParams,
+    errorConvention,
+    getDynamicParamFromSegment,
+    createServerParamsForMetadata,
+    workStore
+  )
+  return accumulateViewport(metadataItems)
+}