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fix: add a fallback for loadManifest import path #2881

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Merged
merged 5 commits into from
Apr 30, 2025
Merged

fix: add a fallback for loadManifest import path #2881

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30cff92
fix: add a fallback for loadManifest import path
mrstork Apr 29, 2025
ef30a47
chore: lint and typecheck fixes
mrstork Apr 29, 2025
0494f72
chore: add memoization for prerender manifest
mrstork Apr 30, 2025
2916c06
fix: move prerenderManifest memoization to module scope
mrstork Apr 30, 2025
40e5653
Merge branch 'main' into integration-test-patch
mrstork Apr 30, 2025
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28 changes: 23 additions & 5 deletions src/run/handlers/cache.cts
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Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,8 @@ import { getLogger, getRequestContext } from './request-context.cjs'
import { isAnyTagStale, markTagsAsStaleAndPurgeEdgeCache, purgeEdgeCache } from './tags-handler.cjs'
import { getTracer, recordWarning } from './tracer.cjs'

let memoizedPrerenderManifest: PrerenderManifest

export class NetlifyCacheHandler implements CacheHandlerForMultipleVersions {
options: CacheHandlerContext
revalidatedTags: string[]
Expand Down Expand Up @@ -165,6 +167,26 @@ export class NetlifyCacheHandler implements CacheHandlerForMultipleVersions {
}
}

private async getPrerenderManifest(serverDistDir: string): Promise<PrerenderManifest> {
if (memoizedPrerenderManifest) {
return memoizedPrerenderManifest
}

const prerenderManifestPath = join(serverDistDir, '..', 'prerender-manifest.json')

try {
// @ts-expect-error Starting in 15.4.0-canary.10 loadManifest was relocated (https://github.com/vercel/next.js/pull/78358)
// eslint-disable-next-line import/no-unresolved, n/no-missing-import
const { loadManifest } = await import('next/dist/server/load-manifest.external.js')
memoizedPrerenderManifest = loadManifest(prerenderManifestPath) as PrerenderManifest
} catch {
const { loadManifest } = await import('next/dist/server/load-manifest.js')
memoizedPrerenderManifest = loadManifest(prerenderManifestPath) as PrerenderManifest
}

return memoizedPrerenderManifest
}

private async injectEntryToPrerenderManifest(
key: string,
{ revalidate, cacheControl }: Pick<NetlifyCachedPageValue, 'revalidate' | 'cacheControl'>,
Expand All @@ -176,11 +198,7 @@ export class NetlifyCacheHandler implements CacheHandlerForMultipleVersions {
typeof cacheControl !== 'undefined')
) {
try {
const { loadManifest } = await import('next/dist/server/load-manifest.js')
const prerenderManifest = loadManifest(
join(this.options.serverDistDir, '..', 'prerender-manifest.json'),
) as PrerenderManifest

const prerenderManifest = await this.getPrerenderManifest(this.options.serverDistDir)
if (typeof cacheControl !== 'undefined') {
// instead of `revalidate` property, we might get `cacheControls` ( https://github.com/vercel/next.js/pull/76207 )
// then we need to keep track of revalidate values via SharedCacheControls
Expand Down
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