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import type {
Page,
Route,
Request as PlaywrightRequest,
} from '@playwright/test'
import type { FetchHandler } from './next-worker-fixture'
function continueRoute(
route: Route,
request: PlaywrightRequest,
testHeaders: Record<string, string>
): Promise<void> {
return route.continue({
headers: {
...request.headers(),
...testHeaders,
},
})
}
export async function handleRoute(
route: Route,
page: Page,
testHeaders: Record<string, string>,
fetchHandler: FetchHandler | null
) {
const request = route.request()
// Continue the navigation and non-fetch requests.
if (request.isNavigationRequest() || request.resourceType() !== 'fetch') {
return continueRoute(route, request, testHeaders)
}
// Continue the local requests. The followup requests will be intercepted
// on the server.
const pageOrigin = new URL(page.url()).origin
const requestOrigin = new URL(request.url()).origin
if (pageOrigin === requestOrigin) {
return continueRoute(route, request, testHeaders)
}
if (!fetchHandler) {
return route.abort()
}
const postData = request.postDataBuffer()
const fetchRequest = new Request(request.url(), {
method: request.method(),
headers: Object.fromEntries(
Object.entries(request.headers()).filter(
([name]) => !name.toLowerCase().startsWith('next-test-')
)
),
body: postData ?? null,
})
const proxyResponse = await fetchHandler(fetchRequest)
if (!proxyResponse) {
return route.abort()
}
if (proxyResponse === 'abort') {
return route.abort()
}
if (proxyResponse === 'continue') {
return continueRoute(route, request, testHeaders)
}
const { status, headers, body } = proxyResponse
return route.fulfill({
status,
headers: Object.fromEntries(headers),
body: body ? Buffer.from(await proxyResponse.arrayBuffer()) : undefined,
})
}
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