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Original file line number Diff line number Diff line change
Expand Up @@ -56,6 +56,7 @@ export async function fetchServerResponse(
[NEXT_ROUTER_STATE_TREE]: string
[NEXT_URL]?: string
[NEXT_ROUTER_PREFETCH_HEADER]?: '1'
'x-deployment-id'?: string
} = {
// Enable flight response
[RSC_HEADER]: '1',
Expand All @@ -79,6 +80,10 @@ export async function fetchServerResponse(
headers[NEXT_URL] = nextUrl
}

if (process.env.NEXT_DEPLOYMENT_ID) {
headers['x-deployment-id'] = process.env.NEXT_DEPLOYMENT_ID
}

const uniqueCacheQuery = hexHash(
[
headers[NEXT_ROUTER_PREFETCH_HEADER] || '0',
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