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import {
CachedRouteKind,
IncrementalCacheKind,
type CachedAppPageValue,
type CachedPageValue,
type IncrementalResponseCacheEntry,
type ResponseCacheEntry,
} from './types'
import RenderResult from '../render-result'
import { RouteKind } from '../route-kind'
import { HTML_CONTENT_TYPE_HEADER } from '../../lib/constants'
export async function fromResponseCacheEntry(
cacheEntry: ResponseCacheEntry
): Promise<IncrementalResponseCacheEntry> {
return {
...cacheEntry,
value:
cacheEntry.value?.kind === CachedRouteKind.PAGES
? {
kind: CachedRouteKind.PAGES,
html: await cacheEntry.value.html.toUnchunkedString(true),
pageData: cacheEntry.value.pageData,
headers: cacheEntry.value.headers,
status: cacheEntry.value.status,
}
: cacheEntry.value?.kind === CachedRouteKind.APP_PAGE
? {
kind: CachedRouteKind.APP_PAGE,
html: await cacheEntry.value.html.toUnchunkedString(true),
postponed: cacheEntry.value.postponed,
rscData: cacheEntry.value.rscData,
headers: cacheEntry.value.headers,
status: cacheEntry.value.status,
segmentData: cacheEntry.value.segmentData,
}
: cacheEntry.value,
}
}
export async function toResponseCacheEntry(
response: IncrementalResponseCacheEntry | null
): Promise<ResponseCacheEntry | null> {
if (!response) return null
return {
isMiss: response.isMiss,
isStale: response.isStale,
cacheControl: response.cacheControl,
value:
response.value?.kind === CachedRouteKind.PAGES
? ({
kind: CachedRouteKind.PAGES,
html: RenderResult.fromStatic(
response.value.html,
HTML_CONTENT_TYPE_HEADER
),
pageData: response.value.pageData,
headers: response.value.headers,
status: response.value.status,
} satisfies CachedPageValue)
: response.value?.kind === CachedRouteKind.APP_PAGE
? ({
kind: CachedRouteKind.APP_PAGE,
html: RenderResult.fromStatic(
response.value.html,
HTML_CONTENT_TYPE_HEADER
),
rscData: response.value.rscData,
headers: response.value.headers,
status: response.value.status,
postponed: response.value.postponed,
segmentData: response.value.segmentData,
} satisfies CachedAppPageValue)
: response.value,
}
}
export function routeKindToIncrementalCacheKind(
routeKind: RouteKind
): Exclude<IncrementalCacheKind, IncrementalCacheKind.FETCH> {
switch (routeKind) {
case RouteKind.PAGES:
return IncrementalCacheKind.PAGES
case RouteKind.APP_PAGE:
return IncrementalCacheKind.APP_PAGE
case RouteKind.IMAGE:
return IncrementalCacheKind.IMAGE
case RouteKind.APP_ROUTE:
return IncrementalCacheKind.APP_ROUTE
case RouteKind.PAGES_API:
// Pages Router API routes are not cached in the incremental cache.
throw new Error(`Unexpected route kind ${routeKind}`)
default:
return routeKind satisfies never
}
}
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