96 lines
4.1 KiB
JavaScript
96 lines
4.1 KiB
JavaScript
import { isResSent } from "../shared/lib/utils";
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import { generateETag } from "./lib/etag";
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import fresh from "next/dist/compiled/fresh";
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import { formatRevalidate } from "./lib/revalidate";
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import { RSC_CONTENT_TYPE_HEADER } from "../client/components/app-router-headers";
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export function sendEtagResponse(req, res, etag) {
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if (etag) {
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/**
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* The server generating a 304 response MUST generate any of the
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* following header fields that would have been sent in a 200 (OK)
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* response to the same request: Cache-Control, Content-Location, Date,
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* ETag, Expires, and Vary. https://tools.ietf.org/html/rfc7232#section-4.1
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*/ res.setHeader("ETag", etag);
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}
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if (fresh(req.headers, {
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etag
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})) {
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res.statusCode = 304;
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res.end();
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return true;
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}
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return false;
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}
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export async function sendRenderResult({ req, res, result, type, generateEtags, poweredByHeader, revalidate, swrDelta }) {
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if (isResSent(res)) {
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return;
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}
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if (poweredByHeader && type === "html") {
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res.setHeader("X-Powered-By", "Next.js");
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}
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// If cache control is already set on the response we don't
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// override it to allow users to customize it via next.config
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if (typeof revalidate !== "undefined" && !res.getHeader("Cache-Control")) {
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res.setHeader("Cache-Control", formatRevalidate({
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revalidate,
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swrDelta
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}));
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}
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const payload = result.isDynamic ? null : result.toUnchunkedString();
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if (payload !== null) {
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let etagPayload = payload;
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if (type === "rsc") {
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// ensure etag generation is deterministic as
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// ordering can differ even if underlying content
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// does not differ
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etagPayload = payload.split("\n").sort().join("\n");
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} else if (type === "html" && payload.includes("__next_f")) {
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const { parse } = require("next/dist/compiled/node-html-parser");
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try {
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var _root_querySelector;
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// Parse the HTML
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let root = parse(payload);
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// Get script tags in the body element
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let scriptTags = (_root_querySelector = root.querySelector("body")) == null ? void 0 : _root_querySelector.querySelectorAll("script").filter((node)=>{
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var _node_innerHTML;
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return !node.hasAttribute("src") && ((_node_innerHTML = node.innerHTML) == null ? void 0 : _node_innerHTML.includes("__next_f"));
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});
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// Sort the script tags by their inner text
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scriptTags == null ? void 0 : scriptTags.sort((a, b)=>a.innerHTML.localeCompare(b.innerHTML));
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// Remove the original script tags
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scriptTags == null ? void 0 : scriptTags.forEach((script)=>script.remove());
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// Append the sorted script tags to the body
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scriptTags == null ? void 0 : scriptTags.forEach((script)=>{
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var _root_querySelector;
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return (_root_querySelector = root.querySelector("body")) == null ? void 0 : _root_querySelector.appendChild(script);
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});
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// Stringify back to HTML
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etagPayload = root.toString();
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} catch (err) {
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console.error(`Error parsing HTML payload`, err);
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}
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}
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const etag = generateEtags ? generateETag(etagPayload) : undefined;
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if (sendEtagResponse(req, res, etag)) {
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return;
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}
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}
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if (!res.getHeader("Content-Type")) {
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res.setHeader("Content-Type", result.contentType ? result.contentType : type === "rsc" ? RSC_CONTENT_TYPE_HEADER : type === "json" ? "application/json" : "text/html; charset=utf-8");
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}
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if (payload) {
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res.setHeader("Content-Length", Buffer.byteLength(payload));
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}
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if (req.method === "HEAD") {
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res.end(null);
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return;
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}
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if (payload !== null) {
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res.end(payload);
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return;
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}
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// Pipe the render result to the response after we get a writer for it.
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await result.pipeToNodeResponse(res);
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}
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//# sourceMappingURL=send-payload.js.map
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