{"version":3,"file":"request.mjs","names":[],"sources":["../../../src/adapters/node/request.ts"],"sourcesContent":["import type { IncomingMessage, ServerResponse } from \"node:http\";\nimport * as set_cookie_parser from \"set-cookie-parser\";\n\nfunction get_raw_body(req: IncomingMessage, body_size_limit?: number) {\n\tconst h = req.headers;\n\n\tif (!h[\"content-type\"]) return null;\n\n\tconst content_length = Number(h[\"content-length\"]);\n\n\t// check if no request body\n\tif (\n\t\t(req.httpVersionMajor === 1 &&\n\t\t\tisNaN(content_length) &&\n\t\t\th[\"transfer-encoding\"] == null) ||\n\t\tcontent_length === 0\n\t) {\n\t\treturn null;\n\t}\n\n\tlet length = content_length;\n\n\tif (body_size_limit) {\n\t\tif (!length) {\n\t\t\tlength = body_size_limit;\n\t\t} else if (length > body_size_limit) {\n\t\t\tthrow Error(\n\t\t\t\t`Received content-length of ${length}, but only accept up to ${body_size_limit} bytes.`,\n\t\t\t);\n\t\t}\n\t}\n\n\tif (req.destroyed) {\n\t\tconst readable = new ReadableStream();\n\t\treadable.cancel();\n\t\treturn readable;\n\t}\n\n\tlet size = 0;\n\tlet cancelled = false;\n\n\treturn new ReadableStream({\n\t\tstart(controller) {\n\t\t\treq.on(\"error\", (error) => {\n\t\t\t\tcancelled = true;\n\t\t\t\tcontroller.error(error);\n\t\t\t});\n\n\t\t\treq.on(\"end\", () => {\n\t\t\t\tif (cancelled) return;\n\t\t\t\tcontroller.close();\n\t\t\t});\n\n\t\t\treq.on(\"data\", (chunk) => {\n\t\t\t\tif (cancelled) return;\n\n\t\t\t\tsize += chunk.length;\n\n\t\t\t\tif (size > length) {\n\t\t\t\t\tcancelled = true;\n\n\t\t\t\t\tcontroller.error(\n\t\t\t\t\t\tnew Error(\n\t\t\t\t\t\t\t`request body size exceeded ${\n\t\t\t\t\t\t\t\tcontent_length ? \"'content-length'\" : \"BODY_SIZE_LIMIT\"\n\t\t\t\t\t\t\t} of ${length}`,\n\t\t\t\t\t\t),\n\t\t\t\t\t);\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\tcontroller.enqueue(chunk);\n\n\t\t\t\tif (controller.desiredSize === null || controller.desiredSize <= 0) {\n\t\t\t\t\treq.pause();\n\t\t\t\t}\n\t\t\t});\n\t\t},\n\n\t\tpull() {\n\t\t\treq.resume();\n\t\t},\n\n\t\tcancel(reason) {\n\t\t\tcancelled = true;\n\t\t\treq.destroy(reason);\n\t\t},\n\t});\n}\n\nfunction constructRelativeUrl(\n\treq: IncomingMessage & { baseUrl?: string; originalUrl?: string },\n) {\n\tconst baseUrl = req.baseUrl;\n\tconst originalUrl = req.originalUrl;\n\n\tif (!baseUrl || !originalUrl) {\n\t\t// In express.js sub-routers `req.url` is relative to the mount\n\t\t// path (e.g., '/auth/xxx'), and `req.baseUrl` will hold the mount\n\t\t// path (e.g., '/api'). Build the full path as baseUrl + url when\n\t\t// available to preserve the full route. For application level routes\n\t\t// baseUrl will be an empty string\n\t\treturn baseUrl ? baseUrl + req.url : req.url;\n\t}\n\n\tif (baseUrl + req.url === originalUrl) {\n\t\treturn baseUrl + req.url;\n\t}\n\n\t// For certain subroutes or when mounting wildcard middlewares in express\n\t// it is possible `baseUrl + req.url` will result in a url constructed\n\t// which has a trailing forward slash the original url did not have.\n\t// Checking the `req.originalUrl` path ending can prevent this issue.\n\n\tconst originalPathEnding = originalUrl.split(\"?\")[0]!.at(-1);\n\treturn originalPathEnding === \"/\" ? baseUrl + req.url : baseUrl;\n}\n\nexport function getRequest({\n\trequest,\n\tbase,\n\tbodySizeLimit,\n}: {\n\tbase: string;\n\tbodySizeLimit?: number;\n\trequest: IncomingMessage;\n}) {\n\t// Check if body has already been parsed by Express middleware\n\tconst maybeConsumedReq = request as any;\n\tlet body = undefined;\n\n\tconst method = request.method;\n\t// Request with GET/HEAD method cannot have body.\n\tif (method !== \"GET\" && method !== \"HEAD\") {\n\t\t// If body was already parsed by Express body-parser middleware\n\t\tif (maybeConsumedReq.body !== undefined) {\n\t\t\t// Convert parsed body back to a ReadableStream\n\t\t\tconst bodyContent =\n\t\t\t\ttypeof maybeConsumedReq.body === \"string\"\n\t\t\t\t\t? maybeConsumedReq.body\n\t\t\t\t\t: JSON.stringify(maybeConsumedReq.body);\n\n\t\t\tbody = new ReadableStream({\n\t\t\t\tstart(controller) {\n\t\t\t\t\tcontroller.enqueue(new TextEncoder().encode(bodyContent));\n\t\t\t\t\tcontroller.close();\n\t\t\t\t},\n\t\t\t});\n\t\t} else {\n\t\t\t// Otherwise, get the raw body stream\n\t\t\tbody = get_raw_body(request, bodySizeLimit);\n\t\t}\n\t}\n\n\treturn new Request(base + constructRelativeUrl(request), {\n\t\t// @ts-expect-error\n\t\tduplex: \"half\",\n\t\tmethod: request.method,\n\t\tbody,\n\t\theaders: request.headers as Record<string, string>,\n\t});\n}\n\nexport async function setResponse(res: ServerResponse, response: Response) {\n\tfor (const [key, value] of response.headers as any) {\n\t\ttry {\n\t\t\tres.setHeader(\n\t\t\t\tkey,\n\t\t\t\tkey === \"set-cookie\"\n\t\t\t\t\t? set_cookie_parser.splitCookiesString(\n\t\t\t\t\t\t\tresponse.headers.get(key) as string,\n\t\t\t\t\t\t)\n\t\t\t\t\t: value,\n\t\t\t);\n\t\t} catch (error) {\n\t\t\tres.getHeaderNames().forEach((name) => res.removeHeader(name));\n\t\t\tres.writeHead(500).end(String(error));\n\t\t\treturn;\n\t\t}\n\t}\n\n\tres.statusCode = response.status;\n\tres.writeHead(response.status);\n\n\tif (!response.body) {\n\t\tres.end();\n\t\treturn;\n\t}\n\n\tif (response.body.locked) {\n\t\tres.end(\n\t\t\t\"Fatal error: Response body is locked. \" +\n\t\t\t\t\"This can happen when the response was already read (for example through 'response.json()' or 'response.text()').\",\n\t\t);\n\t\treturn;\n\t}\n\n\tconst reader = response.body.getReader();\n\n\tif (res.destroyed) {\n\t\treader.cancel();\n\t\treturn;\n\t}\n\n\tconst cancel = (error?: Error) => {\n\t\tres.off(\"close\", cancel);\n\t\tres.off(\"error\", cancel);\n\n\t\t// If the reader has already been interrupted with an error earlier,\n\t\t// then it will appear here, it is useless, but it needs to be catch.\n\t\treader.cancel(error).catch(() => {});\n\t\tif (error) res.destroy(error);\n\t};\n\n\tres.on(\"close\", cancel);\n\tres.on(\"error\", cancel);\n\n\tnext();\n\tasync function next() {\n\t\ttry {\n\t\t\tfor (;;) {\n\t\t\t\tconst { done, value } = await reader.read();\n\n\t\t\t\tif (done) break;\n\n\t\t\t\tconst writeResult = res.write(value);\n\t\t\t\tif (!writeResult) {\n\t\t\t\t\t// In AWS Lambda/serverless environments, drain events may not work properly\n\t\t\t\t\t// Check if we're in a Lambda-like environment and handle differently\n\t\t\t\t\tif (\n\t\t\t\t\t\tprocess.env.AWS_LAMBDA_FUNCTION_NAME ||\n\t\t\t\t\t\tprocess.env.LAMBDA_TASK_ROOT\n\t\t\t\t\t) {\n\t\t\t\t\t\t// In Lambda, continue without waiting for drain\n\t\t\t\t\t\tcontinue;\n\t\t\t\t\t} else {\n\t\t\t\t\t\t// Standard Node.js behavior\n\t\t\t\t\t\tres.once(\"drain\", next);\n\t\t\t\t\t\treturn;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\tres.end();\n\t\t\t}\n\t\t} catch (error) {\n\t\t\tcancel(error instanceof Error ? 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