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3570import type { Plugin, ViteDevServer } from "vite";
import { parseAst } from "vite";
import { pagesRouter, apiRouter, invalidateRouteCache, matchRoute, patternToNextFormat as pagesPatternToNextFormat, type Route } from "./routing/pages-router.js";
import { appRouter, invalidateAppRouteCache } from "./routing/app-router.js";
import { createSSRHandler } from "./server/dev-server.js";
import { handleApiRoute } from "./server/api-handler.js";
import {
generateRscEntry,
generateSsrEntry,
generateBrowserEntry,
} from "./server/app-dev-server.js";
import {
loadNextConfig,
resolveNextConfig,
type ResolvedNextConfig,
type NextRedirect,
type NextRewrite,
} from "./config/next-config.js";
import { findMiddlewareFile, runMiddleware } from "./server/middleware.js";
import { generateSafeRegExpCode, generateMiddlewareMatcherCode, generateNormalizePathCode } from "./server/middleware-codegen.js";
import { normalizePath } from "./server/normalize-path.js";
import { findInstrumentationFile, runInstrumentation } from "./server/instrumentation.js";
import { validateDevRequest } from "./server/dev-origin-check.js";
import { safeRegExp, escapeHeaderSource, isExternalUrl, proxyExternalRequest } from "./config/config-matchers.js";
import { scanMetadataFiles } from "./server/metadata-routes.js";
import { staticExportPages } from "./build/static-export.js";
import tsconfigPaths from "vite-tsconfig-paths";
import MagicString from "magic-string";
import path from "node:path";
import { fileURLToPath, pathToFileURL } from "node:url";
import { createRequire } from "node:module";
import fs from "node:fs";
const __dirname = path.dirname(fileURLToPath(import.meta.url));
/**
* Fetch Google Fonts CSS, download .woff2 files, cache locally, and return
* @font-face CSS with local file references.
*
* Cache dir structure: .vinext/fonts/<family-hash>/
* - style.css (the rewritten @font-face CSS)
* - *.woff2 (downloaded font files)
*/
async function fetchAndCacheFont(
cssUrl: string,
family: string,
cacheDir: string,
): Promise<string> {
// Use a hash of the URL for the cache key
const { createHash } = await import("node:crypto");
const urlHash = createHash("md5").update(cssUrl).digest("hex").slice(0, 12);
const fontDir = path.join(cacheDir, `${family.toLowerCase().replace(/\s+/g, "-")}-${urlHash}`);
// Check if already cached
const cachedCSSPath = path.join(fontDir, "style.css");
if (fs.existsSync(cachedCSSPath)) {
return fs.readFileSync(cachedCSSPath, "utf-8");
}
// Fetch CSS from Google Fonts (woff2 user-agent gives woff2 URLs)
const cssResponse = await fetch(cssUrl, {
headers: {
"User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36",
},
});
if (!cssResponse.ok) {
throw new Error(`Failed to fetch Google Fonts CSS: ${cssResponse.status}`);
}
let css = await cssResponse.text();
// Extract all font file URLs
const urlRe = /url\((https:\/\/fonts\.gstatic\.com\/[^)]+)\)/g;
const urls = new Map<string, string>(); // original URL -> local filename
let urlMatch;
while ((urlMatch = urlRe.exec(css)) !== null) {
const fontUrl = urlMatch[1];
if (!urls.has(fontUrl)) {
const ext = fontUrl.includes(".woff2") ? ".woff2" : fontUrl.includes(".woff") ? ".woff" : ".ttf";
const fileHash = createHash("md5").update(fontUrl).digest("hex").slice(0, 8);
urls.set(fontUrl, `${family.toLowerCase().replace(/\s+/g, "-")}-${fileHash}${ext}`);
}
}
// Download font files
fs.mkdirSync(fontDir, { recursive: true });
for (const [fontUrl, filename] of urls) {
const filePath = path.join(fontDir, filename);
if (!fs.existsSync(filePath)) {
const fontResponse = await fetch(fontUrl);
if (fontResponse.ok) {
const buffer = Buffer.from(await fontResponse.arrayBuffer());
fs.writeFileSync(filePath, buffer);
}
}
// Rewrite CSS to use relative path (Vite will resolve /@fs/ for dev, or asset for build)
css = css.split(fontUrl).join(filePath);
}
// Cache the rewritten CSS
fs.writeFileSync(cachedCSSPath, css);
return css;
}
/**
* Safely parse a static JS object literal string into a plain object.
* Uses Vite's parseAst (Rollup/acorn) so no code is ever evaluated.
* Returns null if the expression contains anything dynamic (function calls,
* template literals, identifiers, computed properties, etc.).
*
* Supports: string literals, numeric literals, boolean literals,
* arrays of the above, and nested object literals.
*/
function parseStaticObjectLiteral(objectStr: string): Record<string, unknown> | null {
let ast: ReturnType<typeof parseAst>;
try {
// Wrap in parens so the parser treats `{…}` as an expression, not a block
ast = parseAst(`(${objectStr})`);
} catch {
return null;
}
// The AST should be: Program > ExpressionStatement > ObjectExpression
const body = ast.body;
if (body.length !== 1 || body[0].type !== "ExpressionStatement") return null;
const expr = body[0].expression;
if (expr.type !== "ObjectExpression") return null;
const result = extractStaticValue(expr);
return result === undefined ? null : (result as Record<string, unknown>);
}
/**
* Recursively extract a static value from an ESTree AST node.
* Returns undefined (not null) if the node contains any dynamic expression.
*
* Uses `any` for the node parameter because Rollup's internal ESTree types
* (estree.Expression, estree.ObjectExpression, etc.) aren't re-exported by Vite,
* and the recursive traversal touches many different node shapes.
*/
// eslint-disable-next-line @typescript-eslint/no-explicit-any
function extractStaticValue(node: any): unknown {
switch (node.type) {
case "Literal":
// String, number, boolean, null
return node.value;
case "UnaryExpression":
// Handle negative numbers: -1, -3.14
if (node.operator === "-" && node.argument?.type === "Literal" && typeof node.argument.value === "number") {
return -node.argument.value;
}
return undefined;
case "ArrayExpression": {
const arr: unknown[] = [];
for (const elem of node.elements) {
if (!elem) return undefined; // sparse array
const val = extractStaticValue(elem);
if (val === undefined) return undefined;
arr.push(val);
}
return arr;
}
case "ObjectExpression": {
const obj: Record<string, unknown> = {};
for (const prop of node.properties) {
if (prop.type !== "Property") return undefined; // SpreadElement etc.
if (prop.computed) return undefined; // [expr]: val
// Key can be Identifier (unquoted) or Literal (quoted)
let key: string;
if (prop.key.type === "Identifier") {
key = prop.key.name;
} else if (prop.key.type === "Literal" && typeof prop.key.value === "string") {
key = prop.key.value;
} else {
return undefined;
}
const val = extractStaticValue(prop.value);
if (val === undefined) return undefined;
obj[key] = val;
}
return obj;
}
default:
// TemplateLiteral, CallExpression, Identifier, etc. — reject
return undefined;
}
}
/**
* Detect Vite major version at runtime by resolving from cwd.
* The plugin may be installed in a workspace root with Vite 7 but used
* by a project that has Vite 8 — so we resolve from cwd, not from
* the plugin's own location.
*/
function getViteMajorVersion(): number {
try {
const require = createRequire(path.join(process.cwd(), "package.json"));
const vitePkg = require("vite/package.json");
return parseInt(vitePkg.version, 10);
} catch {
return 7; // default to Vite 7
}
}
/**
* PostCSS config file names to search for, in priority order.
* Matches the same search order as postcss-load-config / lilconfig.
*/
const POSTCSS_CONFIG_FILES = [
"postcss.config.js",
"postcss.config.cjs",
"postcss.config.mjs",
"postcss.config.ts",
"postcss.config.cts",
"postcss.config.mts",
".postcssrc",
".postcssrc.js",
".postcssrc.cjs",
".postcssrc.mjs",
".postcssrc.ts",
".postcssrc.cts",
".postcssrc.mts",
".postcssrc.json",
".postcssrc.yaml",
".postcssrc.yml",
];
/**
* Resolve PostCSS string plugin names in a project's PostCSS config.
*
* Next.js (via postcss-load-config) resolves string plugin names in the
* object form `{ plugins: { "pkg-name": opts } }` but NOT in the array form
* `{ plugins: ["pkg-name"] }`. Since many Next.js projects use the array
* form (particularly with Tailwind CSS v4), we detect this case and resolve
* the string names to actual plugin functions so Vite can use them.
*
* Returns the resolved PostCSS config object to inject into Vite's
* `css.postcss`, or `undefined` if no resolution is needed.
*/
async function resolvePostcssStringPlugins(
projectRoot: string,
): Promise<{ plugins: any[] } | undefined> {
// Find the PostCSS config file
let configPath: string | null = null;
for (const name of POSTCSS_CONFIG_FILES) {
const candidate = path.join(projectRoot, name);
if (fs.existsSync(candidate)) {
configPath = candidate;
break;
}
}
if (!configPath) return undefined;
// Load the config file
let config: any;
try {
if (configPath.endsWith(".json") || configPath.endsWith(".yaml") || configPath.endsWith(".yml")) {
// JSON/YAML configs use object form — postcss-load-config handles these fine
return undefined;
}
// For .postcssrc without extension, check if it's JSON
if (configPath.endsWith(".postcssrc")) {
const content = fs.readFileSync(configPath, "utf-8").trim();
if (content.startsWith("{")) {
// JSON format — postcss-load-config handles object form
return undefined;
}
}
const mod = await import(pathToFileURL(configPath).href);
config = mod.default ?? mod;
} catch {
// If we can't load the config, let Vite/postcss-load-config handle it
return undefined;
}
// Only process array-form plugins that contain string entries
// (either bare strings or tuple form ["plugin-name", { options }])
if (!config || !Array.isArray(config.plugins)) return undefined;
const hasStringPlugins = config.plugins.some(
(p: any) =>
typeof p === "string" ||
(Array.isArray(p) && typeof p[0] === "string"),
);
if (!hasStringPlugins) return undefined;
// Resolve string plugin names to actual plugin functions
const req = createRequire(path.join(projectRoot, "package.json"));
const resolved = await Promise.all(
config.plugins.filter(Boolean).map(async (plugin: any) => {
if (typeof plugin === "string") {
const resolved = req.resolve(plugin);
const mod = await import(pathToFileURL(resolved).href);
const fn = mod.default ?? mod;
// If the export is a function, call it to get the plugin instance
return typeof fn === "function" ? fn() : fn;
}
// Array tuple form: ["plugin-name", { options }]
if (Array.isArray(plugin) && typeof plugin[0] === "string") {
const [name, options] = plugin;
const resolved = req.resolve(name);
const mod = await import(pathToFileURL(resolved).href);
const fn = mod.default ?? mod;
return typeof fn === "function" ? fn(options) : fn;
}
// Already a function or plugin object — pass through
return plugin;
}),
);
return { plugins: resolved };
}
// Virtual module IDs for Pages Router production build
const VIRTUAL_SERVER_ENTRY = "virtual:vinext-server-entry";
const RESOLVED_SERVER_ENTRY = "\0" + VIRTUAL_SERVER_ENTRY;
const VIRTUAL_CLIENT_ENTRY = "virtual:vinext-client-entry";
const RESOLVED_CLIENT_ENTRY = "\0" + VIRTUAL_CLIENT_ENTRY;
// Virtual module IDs for App Router entries
const VIRTUAL_RSC_ENTRY = "virtual:vinext-rsc-entry";
const RESOLVED_RSC_ENTRY = "\0" + VIRTUAL_RSC_ENTRY;
const VIRTUAL_APP_SSR_ENTRY = "virtual:vinext-app-ssr-entry";
const RESOLVED_APP_SSR_ENTRY = "\0" + VIRTUAL_APP_SSR_ENTRY;
const VIRTUAL_APP_BROWSER_ENTRY = "virtual:vinext-app-browser-entry";
const RESOLVED_APP_BROWSER_ENTRY = "\0" + VIRTUAL_APP_BROWSER_ENTRY;
/** Image file extensions handled by the vinext:image-imports plugin.
* Shared between the Rolldown hook filter and the transform handler regex. */
const IMAGE_EXTS = "png|jpe?g|gif|webp|avif|svg|ico|bmp|tiff?";
/**
* Extract the npm package name from a module ID (file path).
* Returns null if not in node_modules.
*
* Handles scoped packages (@org/pkg) and pnpm-style paths
* (node_modules/.pnpm/pkg@ver/node_modules/pkg).
*/
function getPackageName(id: string): string | null {
const nmIdx = id.lastIndexOf("node_modules/");
if (nmIdx === -1) return null;
const rest = id.slice(nmIdx + "node_modules/".length);
if (rest.startsWith("@")) {
// Scoped package: @org/pkg
const parts = rest.split("/");
return parts.length >= 2 ? parts[0] + "/" + parts[1] : null;
}
return rest.split("/")[0] || null;
}
/** Absolute path to vinext's shims directory, used by clientManualChunks. */
const _shimsDir = path.resolve(__dirname, "shims") + "/";
/**
* manualChunks function for client builds.
*
* Splits the client bundle into:
* - "framework" — React, ReactDOM, and scheduler (loaded on every page)
* - "vinext" — vinext shims (router, head, link, etc.)
*
* All other vendor code is left to Rollup's default chunk-splitting
* algorithm. Rollup automatically deduplicates shared modules into
* common chunks based on the import graph — no manual intervention
* needed.
*
* Why not split every npm package into its own chunk?
* - Per-package splitting (`vendor-X`) creates 50-200+ chunks for a
* typical app, far exceeding the ~25-request sweet spot for HTTP/2.
* - gzip/brotli compress small files poorly — each file restarts with
* an empty dictionary, losing ~5-15% total compressed size vs fewer
* larger chunks (Khan Academy measured +2.5% wire size with 10x
* more files containing less raw code).
* - ES module evaluation has per-module overhead that compounds on
* mobile devices.
* - No major Vite-based framework (Remix, SvelteKit, Astro, TanStack)
* uses per-package splitting. Next.js only isolates packages >160KB.
* - Rollup's graph-based splitting already handles the common case
* well: shared dependencies between routes get their own chunks,
* and route-specific code stays in route chunks.
*/
function clientManualChunks(id: string): string | undefined {
// React framework — always loaded, shared across all pages.
// Isolating React into its own chunk is the single highest-value
// split: it's ~130KB compressed, loaded on every page, and its
// content hash rarely changes between deploys.
if (id.includes("node_modules")) {
const pkg = getPackageName(id);
if (!pkg) return undefined;
if (
pkg === "react" ||
pkg === "react-dom" ||
pkg === "scheduler"
) {
return "framework";
}
// Let Rollup handle all other vendor code via its default
// graph-based splitting. This produces a reasonable number of
// shared chunks (typically 5-15) based on actual import patterns,
// with good compression efficiency.
return undefined;
}
// vinext shims — small runtime, shared across all pages.
// Use the absolute shims directory path to avoid matching user files
// that happen to have "/shims/" in their path.
if (id.startsWith(_shimsDir)) {
return "vinext";
}
return undefined;
}
/**
* Rollup output config with manualChunks for client code-splitting.
* Used by both CLI builds and multi-environment builds.
*
* experimentalMinChunkSize merges tiny shared chunks (< 10KB) back into
* their importers. This reduces HTTP request count and improves gzip
* compression efficiency — small files restart the compression dictionary,
* adding ~5-15% wire overhead vs fewer larger chunks.
*/
const clientOutputConfig = {
manualChunks: clientManualChunks,
experimentalMinChunkSize: 10_000,
};
/**
* Rollup treeshake configuration for production client builds.
*
* Uses the 'recommended' preset as a safe base, then overrides
* moduleSideEffects to strip unused re-exports from npm packages.
*
* The 'no-external' value for moduleSideEffects means:
* - Local project modules: preserve side effects (CSS imports, polyfills)
* - node_modules packages: treat as side-effect-free unless exports are used
*
* This is the single highest-impact optimization for large barrel-exporting
* libraries like mermaid, @mui/material, lucide-react, etc. These libraries
* re-export hundreds of sub-modules through barrel files. Without this,
* Rollup preserves every sub-module even when only a few exports are consumed.
*
* Why 'no-external' instead of false (global side-effect-free)?
* - User code may rely on import-time side effects (e.g., `import './global.css'`)
* - 'no-external' is safe for app code while still enabling aggressive DCE for deps
*
* Why not the 'smallest' preset?
* - 'smallest' also sets propertyReadSideEffects: false and
* tryCatchDeoptimization: false, which can break specific libraries
* that rely on property access side effects or try/catch for feature detection
* - 'recommended' + 'no-external' gives most of the benefit with less risk
*/
const clientTreeshakeConfig = {
preset: "recommended" as const,
moduleSideEffects: "no-external" as const,
};
/**
* Compute the set of chunk filenames that are ONLY reachable through dynamic
* imports (i.e. behind React.lazy(), next/dynamic, or manual import()).
*
* These chunks should NOT be modulepreloaded in the HTML — they will be
* fetched on demand when the dynamic import executes.
*
* Algorithm: Starting from all entry chunks in the build manifest, walk the
* static `imports` tree (breadth-first). Any chunk file NOT reached by this
* walk is only reachable through `dynamicImports` and is therefore "lazy".
*
* @param buildManifest - Vite's build manifest (manifest.json), which is a
* Record<string, ManifestChunk> where each chunk has `file`, `imports`,
* `dynamicImports`, `isEntry`, and `isDynamicEntry` fields.
* @returns Array of chunk filenames (e.g. "assets/mermaid-NOHMQCX5.js") that
* should be excluded from modulepreload hints.
*/
function computeLazyChunks(
buildManifest: Record<string, {
file: string;
isEntry?: boolean;
isDynamicEntry?: boolean;
imports?: string[];
dynamicImports?: string[];
css?: string[];
}>
): string[] {
// Collect all chunk files that are statically reachable from entries
const eagerFiles = new Set<string>();
const visited = new Set<string>();
const queue: string[] = [];
// Start BFS from all entry chunks
for (const key of Object.keys(buildManifest)) {
const chunk = buildManifest[key];
if (chunk.isEntry) {
queue.push(key);
}
}
while (queue.length > 0) {
const key = queue.shift()!;
if (visited.has(key)) continue;
visited.add(key);
const chunk = buildManifest[key];
if (!chunk) continue;
// Mark this chunk's file as eager
eagerFiles.add(chunk.file);
// Also mark its CSS as eager (CSS should always be preloaded to avoid FOUC)
if (chunk.css) {
for (const cssFile of chunk.css) {
eagerFiles.add(cssFile);
}
}
// Follow only static imports — NOT dynamicImports
if (chunk.imports) {
for (const imp of chunk.imports) {
if (!visited.has(imp)) {
queue.push(imp);
}
}
}
}
// Any JS file in the manifest that's NOT in eagerFiles is a lazy chunk
const lazyChunks: string[] = [];
const allFiles = new Set<string>();
for (const key of Object.keys(buildManifest)) {
const chunk = buildManifest[key];
if (chunk.file && !allFiles.has(chunk.file)) {
allFiles.add(chunk.file);
if (!eagerFiles.has(chunk.file) && chunk.file.endsWith(".js")) {
lazyChunks.push(chunk.file);
}
}
}
return lazyChunks;
}
export interface VinextOptions {
/**
* Base directory containing the app/ and pages/ directories.
* Can be an absolute path or a path relative to the Vite root.
*
* By default, vinext auto-detects: checks for app/ and pages/ at the
* project root first, then falls back to src/app/ and src/pages/.
*/
appDir?: string;
/**
* Auto-register @vitejs/plugin-rsc when an app/ directory is detected.
* Set to `false` to disable auto-registration (e.g. if you configure
* @vitejs/plugin-rsc manually with custom options).
* @default true
*/
rsc?: boolean;
}
export default function vinext(options: VinextOptions = {}): Plugin[] {
let root: string;
let pagesDir: string;
let appDir: string;
let hasAppDir = false;
let hasPagesDir = false;
let nextConfig: ResolvedNextConfig;
let middlewarePath: string | null = null;
let instrumentationPath: string | null = null;
let hasCloudflarePlugin = false;
// Resolve shim paths - works both from source (.ts) and built (.js)
const shimsDir = path.resolve(__dirname, "shims");
// Shim alias map — populated in config(), used by resolveId() for .js variants
let nextShimMap: Record<string, string> = {};
/**
* Generate the virtual SSR server entry module.
* This is the entry point for `vite build --ssr`.
*/
async function generateServerEntry(): Promise<string> {
const pageRoutes = await pagesRouter(pagesDir);
const apiRoutes = await apiRouter(pagesDir);
// Generate import statements using absolute paths since virtual
// modules don't have a real file location for relative resolution.
const pageImports = pageRoutes.map((r: Route, i: number) => {
const absPath = r.filePath.replace(/\\/g, "/");
return `import * as page_${i} from ${JSON.stringify(absPath)};`;
});
const apiImports = apiRoutes.map((r: Route, i: number) => {
const absPath = r.filePath.replace(/\\/g, "/");
return `import * as api_${i} from ${JSON.stringify(absPath)};`;
});
// Build the route table — include filePath for SSR manifest lookup
const pageRouteEntries = pageRoutes.map((r: Route, i: number) => {
const absPath = r.filePath.replace(/\\/g, "/");
return ` { pattern: ${JSON.stringify(r.pattern)}, isDynamic: ${r.isDynamic}, params: ${JSON.stringify(r.params)}, module: page_${i}, filePath: ${JSON.stringify(absPath)} }`;
});
const apiRouteEntries = apiRoutes.map((r: Route, i: number) => {
return ` { pattern: ${JSON.stringify(r.pattern)}, isDynamic: ${r.isDynamic}, params: ${JSON.stringify(r.params)}, module: api_${i} }`;
});
// Check for _app and _document
const hasApp = fs.existsSync(path.join(pagesDir, "_app.tsx")) || fs.existsSync(path.join(pagesDir, "_app.jsx")) || fs.existsSync(path.join(pagesDir, "_app.ts")) || fs.existsSync(path.join(pagesDir, "_app.js"));
const hasDoc = fs.existsSync(path.join(pagesDir, "_document.tsx")) || fs.existsSync(path.join(pagesDir, "_document.jsx")) || fs.existsSync(path.join(pagesDir, "_document.ts")) || fs.existsSync(path.join(pagesDir, "_document.js"));
// Use absolute paths for _app and _document too
const appFileBase = path.join(pagesDir, "_app").replace(/\\/g, "/");
const docFileBase = path.join(pagesDir, "_document").replace(/\\/g, "/");
const appImportCode = hasApp
? `import { default as AppComponent } from ${JSON.stringify(appFileBase)};`
: `const AppComponent = null;`;
const docImportCode = hasDoc
? `import { default as DocumentComponent } from ${JSON.stringify(docFileBase)};`
: `const DocumentComponent = null;`;
// Serialize i18n config for embedding in the server entry
const i18nConfigJson = nextConfig?.i18n
? JSON.stringify({
locales: nextConfig.i18n.locales,
defaultLocale: nextConfig.i18n.defaultLocale,
localeDetection: nextConfig.i18n.localeDetection,
})
: "null";
// Serialize the full resolved config for the production server.
// This embeds redirects, rewrites, headers, basePath, trailingSlash
// so prod-server.ts can apply them without loading next.config.js at runtime.
const vinextConfigJson = JSON.stringify({
basePath: nextConfig?.basePath ?? "",
trailingSlash: nextConfig?.trailingSlash ?? false,
redirects: nextConfig?.redirects ?? [],
rewrites: nextConfig?.rewrites ?? { beforeFiles: [], afterFiles: [], fallback: [] },
headers: nextConfig?.headers ?? [],
i18n: nextConfig?.i18n ?? null,
});
// Generate middleware code if middleware.ts exists
const middlewareImportCode = middlewarePath
? `import * as middlewareModule from ${JSON.stringify(middlewarePath.replace(/\\/g, "/"))};
import { NextRequest } from "next/server";`
: "";
// The matcher config is read from the middleware module at import time.
// We inline the matching + execution logic so the prod server can call it.
const middlewareExportCode = middlewarePath
? `
// --- Middleware support (generated from middleware-codegen.ts) ---
${generateNormalizePathCode("es5")}
${generateSafeRegExpCode("es5")}
${generateMiddlewareMatcherCode("es5")}
export async function runMiddleware(request) {
var middlewareFn = middlewareModule.default || middlewareModule.middleware;
if (typeof middlewareFn !== "function") return { continue: true };
var config = middlewareModule.config;
var matcher = config && config.matcher;
var url = new URL(request.url);
// Normalize pathname before matching to prevent path-confusion bypasses
// (percent-encoding like /%61dmin, double slashes like /dashboard//settings).
var decodedPathname;
try { decodedPathname = decodeURIComponent(url.pathname); } catch (e) {
return { continue: false, response: new Response("Bad Request", { status: 400 }) };
}
var normalizedPathname = __normalizePath(decodedPathname);
if (!matchesMiddleware(normalizedPathname, matcher)) return { continue: true };
// Construct a new Request with the decoded + normalized pathname so middleware
// always sees the same canonical path that the router uses.
var mwRequest = request;
if (normalizedPathname !== url.pathname) {
var mwUrl = new URL(url);
mwUrl.pathname = normalizedPathname;
mwRequest = new Request(mwUrl, request);
}
var nextRequest = mwRequest instanceof NextRequest ? mwRequest : new NextRequest(mwRequest);
var response;
try { response = await middlewareFn(nextRequest); }
catch (e) {
console.error("[vinext] Middleware error:", e);
return { continue: false, response: new Response("Internal Server Error", { status: 500 }) };
}
if (!response) return { continue: true };
if (response.headers.get("x-middleware-next") === "1") {
var rHeaders = new Headers();
for (var [key, value] of response.headers) {
// Strip ALL x-middleware-* headers — they are internal routing signals
// and must never reach clients.
if (!key.startsWith("x-middleware-")) rHeaders.set(key, value);
}
return { continue: true, responseHeaders: rHeaders };
}
if (response.status >= 300 && response.status < 400) {
var location = response.headers.get("Location") || response.headers.get("location");
if (location) return { continue: false, redirectUrl: location, redirectStatus: response.status };
}
var rewriteUrl = response.headers.get("x-middleware-rewrite");
if (rewriteUrl) {
var rwHeaders = new Headers();
for (var [k, v] of response.headers) { if (!k.startsWith("x-middleware-")) rwHeaders.set(k, v); }
var rewritePath;
try { var parsed = new URL(rewriteUrl, request.url); rewritePath = parsed.pathname + parsed.search; }
catch { rewritePath = rewriteUrl; }
return { continue: true, rewriteUrl: rewritePath, rewriteStatus: response.status !== 200 ? response.status : undefined, responseHeaders: rwHeaders };
}
return { continue: false, response: response };
}
`
: `
export async function runMiddleware() { return { continue: true }; }
`;
// The server entry is a self-contained module that uses Web-standard APIs
// (Request/Response, renderToReadableStream) so it runs on Cloudflare Workers.
return `
import React from "react";
import { renderToReadableStream } from "react-dom/server.edge";
import { resetSSRHead, getSSRHeadHTML } from "next/head";
import { flushPreloads } from "next/dynamic";
import { setSSRContext } from "next/router";
import { getCacheHandler } from "next/cache";
import { runWithFetchCache } from "vinext/fetch-cache";
import { _runWithCacheState } from "next/cache";
import { runWithPrivateCache } from "vinext/cache-runtime";
import { runWithRouterState } from "vinext/router-state";
import { runWithHeadState } from "vinext/head-state";
import { safeJsonStringify } from "vinext/html";
import { getSSRFontLinks as _getSSRFontLinks, getSSRFontStyles as _getSSRFontStylesGoogle, getSSRFontPreloads as _getSSRFontPreloadsGoogle } from "next/font/google";
import { getSSRFontStyles as _getSSRFontStylesLocal, getSSRFontPreloads as _getSSRFontPreloadsLocal } from "next/font/local";
${middlewareImportCode}
// i18n config (embedded at build time)
const i18nConfig = ${i18nConfigJson};
// Full resolved config for production server (embedded at build time)
export const vinextConfig = ${vinextConfigJson};
// ISR cache helpers (inlined for the server entry)
async function isrGet(key) {
const handler = getCacheHandler();
const result = await handler.get(key);
if (!result || !result.value) return null;
return { value: result, isStale: result.cacheState === "stale" };
}
async function isrSet(key, data, revalidateSeconds, tags) {
const handler = getCacheHandler();
await handler.set(key, data, { revalidate: revalidateSeconds, tags: tags || [] });
}
const pendingRegenerations = new Map();
function triggerBackgroundRegeneration(key, renderFn) {
if (pendingRegenerations.has(key)) return;
const promise = renderFn()
.catch((err) => console.error("[vinext] ISR regen failed for " + key + ":", err))
.finally(() => pendingRegenerations.delete(key));
pendingRegenerations.set(key, promise);
}
async function renderToStringAsync(element) {
const stream = await renderToReadableStream(element);
await stream.allReady;
return new Response(stream).text();
}
${pageImports.join("\n")}
${apiImports.join("\n")}
${appImportCode}
${docImportCode}
const pageRoutes = [
${pageRouteEntries.join(",\n")}
];
const apiRoutes = [
${apiRouteEntries.join(",\n")}
];
function matchRoute(url, routes) {
const pathname = url.split("?")[0];
let normalizedUrl = pathname === "/" ? "/" : pathname.replace(/\\/$/, "");
// NOTE: Do NOT decodeURIComponent here. The pathname is already decoded at
// the entry point. Decoding again would create a double-decode vector.
for (const route of routes) {
const params = matchPattern(normalizedUrl, route.pattern);
if (params !== null) return { route, params };
}
return null;
}
function matchPattern(url, pattern) {
const urlParts = url.split("/").filter(Boolean);
const patternParts = pattern.split("/").filter(Boolean);
const params = Object.create(null);
for (let i = 0; i < patternParts.length; i++) {
const pp = patternParts[i];
if (pp.endsWith("+")) {
const paramName = pp.slice(1, -1);
const remaining = urlParts.slice(i);
if (remaining.length === 0) return null;
params[paramName] = remaining;
return params;
}
if (pp.endsWith("*")) {
const paramName = pp.slice(1, -1);
params[paramName] = urlParts.slice(i);
return params;
}
if (pp.startsWith(":")) {
if (i >= urlParts.length) return null;
params[pp.slice(1)] = urlParts[i];
continue;
}
if (i >= urlParts.length || urlParts[i] !== pp) return null;
}
if (urlParts.length !== patternParts.length) return null;
return params;
}
function parseQuery(url) {
const qs = url.split("?")[1];
if (!qs) return {};
const p = new URLSearchParams(qs);
const q = {};
for (const [k, v] of p) {
if (k in q) {
q[k] = Array.isArray(q[k]) ? q[k].concat(v) : [q[k], v];
} else {
q[k] = v;
}
}
return q;
}
function patternToNextFormat(pattern) {
return pattern
.replace(/:([\\w]+)\\*/g, "[[...$1]]")
.replace(/:([\\w]+)\\+/g, "[...$1]")
.replace(/:([\\w]+)/g, "[$1]");
}
function collectAssetTags(manifest, moduleIds) {
// Fall back to embedded manifest (set by vinext:cloudflare-build for Workers)
const m = (manifest && Object.keys(manifest).length > 0)
? manifest
: (typeof globalThis !== "undefined" && globalThis.__VINEXT_SSR_MANIFEST__) || null;
const tags = [];
const seen = new Set();
// Load the set of lazy chunk filenames (only reachable via dynamic imports).
// These should NOT get <link rel="modulepreload"> or <script type="module">
// tags — they are fetched on demand when the dynamic import() executes (e.g.
// chunks behind React.lazy() or next/dynamic boundaries).
var lazyChunks = (typeof globalThis !== "undefined" && globalThis.__VINEXT_LAZY_CHUNKS__) || null;
var lazySet = lazyChunks && lazyChunks.length > 0 ? new Set(lazyChunks) : null;
// Inject the client entry script if embedded by vinext:cloudflare-build
if (typeof globalThis !== "undefined" && globalThis.__VINEXT_CLIENT_ENTRY__) {
const entry = globalThis.__VINEXT_CLIENT_ENTRY__;
seen.add(entry);
tags.push('<link rel="modulepreload" href="/' + entry + '" />');
tags.push('<script type="module" src="/' + entry + '" crossorigin></script>');
}
if (m) {
// Always inject shared chunks (framework, vinext runtime, entry) and
// page-specific chunks. The manifest maps module file paths to their
// associated JS/CSS assets.
//
// For page-specific injection, the module IDs may be absolute paths
// while the manifest uses relative paths. Try both the original ID
// and a suffix match to find the correct manifest entry.
var allFiles = [];
if (moduleIds && moduleIds.length > 0) {
// Collect assets for the requested page modules
for (var mi = 0; mi < moduleIds.length; mi++) {
var id = moduleIds[mi];
var files = m[id];
if (!files) {
// Absolute path didn't match — try matching by suffix.
// Manifest keys are relative (e.g. "pages/about.tsx") while
// moduleIds may be absolute (e.g. "/home/.../pages/about.tsx").
for (var mk in m) {
if (id.endsWith("/" + mk) || id === mk) {
files = m[mk];
break;
}
}
}
if (files) {
for (var fi = 0; fi < files.length; fi++) allFiles.push(files[fi]);
}
}
// Also inject shared chunks that every page needs: framework,
// vinext runtime, and the entry bootstrap. These are identified
// by scanning all manifest values for chunk filenames containing
// known prefixes.
for (var key in m) {
var vals = m[key];
if (!vals) continue;
for (var vi = 0; vi < vals.length; vi++) {
var file = vals[vi];
var basename = file.split("/").pop() || "";
if (
basename.startsWith("framework-") ||
basename.startsWith("vinext-") ||
basename.includes("vinext-client-entry") ||
basename.includes("vinext-app-browser-entry")
) {
allFiles.push(file);
}
}
}
} else {
// No specific modules — include all assets from manifest
for (var akey in m) {
var avals = m[akey];
if (avals) {
for (var ai = 0; ai < avals.length; ai++) allFiles.push(avals[ai]);
}
}
}
for (var ti = 0; ti < allFiles.length; ti++) {
var tf = allFiles[ti];
// Normalize: Vite's SSR manifest values include a leading '/'
// (from base path), but we prepend '/' ourselves when building
// href/src attributes. Strip any existing leading slash to avoid
// producing protocol-relative URLs like "//assets/chunk.js".
// This also ensures consistent keys for the seen-set dedup and
// lazySet.has() checks (which use values without leading slash).
if (tf.charAt(0) === '/') tf = tf.slice(1);
if (seen.has(tf)) continue;
seen.add(tf);
if (tf.endsWith(".css")) {
tags.push('<link rel="stylesheet" href="/' + tf + '" />');
} else if (tf.endsWith(".js")) {
// Skip lazy chunks — they are behind dynamic import() boundaries
// (React.lazy, next/dynamic) and should only be fetched on demand.
if (lazySet && lazySet.has(tf)) continue;
tags.push('<link rel="modulepreload" href="/' + tf + '" />');
tags.push('<script type="module" src="/' + tf + '" crossorigin></script>');
}
}
}
return tags.join("\\n ");
}
// i18n helpers
function extractLocale(url) {
if (!i18nConfig) return { locale: undefined, url, hadPrefix: false };
const pathname = url.split("?")[0];
const parts = pathname.split("/").filter(Boolean);
const query = url.includes("?") ? url.slice(url.indexOf("?")) : "";
if (parts.length > 0 && i18nConfig.locales.includes(parts[0])) {
const locale = parts[0];
const rest = "/" + parts.slice(1).join("/");
return { locale, url: (rest || "/") + query, hadPrefix: true };
}
return { locale: i18nConfig.defaultLocale, url, hadPrefix: false };
}
function detectLocaleFromHeaders(headers) {
if (!i18nConfig) return null;
const acceptLang = headers.get("accept-language");
if (!acceptLang) return null;
const langs = acceptLang.split(",").map(function(part) {
const pieces = part.trim().split(";");
const q = pieces[1] ? parseFloat(pieces[1].replace("q=", "")) : 1;
return { lang: pieces[0].trim().toLowerCase(), q: q };
}).sort(function(a, b) { return b.q - a.q; });
for (let k = 0; k < langs.length; k++) {
const lang = langs[k].lang;
for (let j = 0; j < i18nConfig.locales.length; j++) {
if (i18nConfig.locales[j].toLowerCase() === lang) return i18nConfig.locales[j];
}
const prefix = lang.split("-")[0];
for (let j = 0; j < i18nConfig.locales.length; j++) {
const loc = i18nConfig.locales[j].toLowerCase();
if (loc === prefix || loc.startsWith(prefix + "-")) return i18nConfig.locales[j];
}
}
return null;
}
function parseCookieLocaleFromHeader(cookieHeader) {
if (!i18nConfig || !cookieHeader) return null;
const match = cookieHeader.match(/(?:^|;\\s*)NEXT_LOCALE=([^;]*)/);
if (!match) return null;
var value;
try { value = decodeURIComponent(match[1].trim()); } catch (e) { return null; }
if (i18nConfig.locales.indexOf(value) !== -1) return value;
return null;
}
function parseCookies(cookieHeader) {
const cookies = {};
if (!cookieHeader) return cookies;
for (const part of cookieHeader.split(";")) {
const [key, ...rest] = part.split("=");
if (key) cookies[key.trim()] = rest.join("=").trim();
}
return cookies;
}
// Lightweight req/res facade for getServerSideProps and API routes.
// Next.js pages expect ctx.req/ctx.res with Node-like shapes.
function createReqRes(request, url, query, body) {
const headersObj = {};
for (const [k, v] of request.headers) headersObj[k.toLowerCase()] = v;
const req = {
method: request.method,
url: url,
headers: headersObj,
query: query,
body: body,
cookies: parseCookies(request.headers.get("cookie")),
};
let resStatusCode = 200;
const resHeaders = {};
// set-cookie needs array support (multiple Set-Cookie headers are common)
const setCookieHeaders = [];
let resBody = null;
let ended = false;
let resolveResponse;
const responsePromise = new Promise(function(r) { resolveResponse = r; });
const res = {
get statusCode() { return resStatusCode; },
set statusCode(code) { resStatusCode = code; },
writeHead: function(code, headers) {
resStatusCode = code;
if (headers) {
for (const [k, v] of Object.entries(headers)) {
if (k.toLowerCase() === "set-cookie") {
if (Array.isArray(v)) { for (const c of v) setCookieHeaders.push(c); }
else { setCookieHeaders.push(v); }
} else {
resHeaders[k] = v;
}
}
}
return res;
},
setHeader: function(name, value) {
if (name.toLowerCase() === "set-cookie") {
if (Array.isArray(value)) { for (const c of value) setCookieHeaders.push(c); }
else { setCookieHeaders.push(value); }
} else {
resHeaders[name.toLowerCase()] = value;
}
return res;
},
getHeader: function(name) {
if (name.toLowerCase() === "set-cookie") return setCookieHeaders.length > 0 ? setCookieHeaders : undefined;
return resHeaders[name.toLowerCase()];
},
end: function(data) {
if (ended) return;
ended = true;
if (data !== undefined && data !== null) resBody = data;
const h = new Headers(resHeaders);
for (const c of setCookieHeaders) h.append("set-cookie", c);
resolveResponse(new Response(resBody, { status: resStatusCode, headers: h }));
},
status: function(code) { resStatusCode = code; return res; },
json: function(data) {
resHeaders["content-type"] = "application/json";
res.end(JSON.stringify(data));
},
send: function(data) {
if (typeof data === "object" && data !== null) { res.json(data); }
else { if (!resHeaders["content-type"]) resHeaders["content-type"] = "text/plain"; res.end(String(data)); }
},
redirect: function(statusOrUrl, url2) {
if (typeof statusOrUrl === "string") { res.writeHead(307, { Location: statusOrUrl }); }
else { res.writeHead(statusOrUrl, { Location: url2 }); }
res.end();
},
};
return { req, res, responsePromise };
}
/**
* Read request body as text with a size limit.
* Throws if the body exceeds maxBytes. This prevents DoS via chunked
* transfer encoding where Content-Length is absent or spoofed.
*/
async function readBodyWithLimit(request, maxBytes) {
if (!request.body) return "";
var reader = request.body.getReader();
var decoder = new TextDecoder();
var chunks = [];
var totalSize = 0;
for (;;) {
var result = await reader.read();
if (result.done) break;
totalSize += result.value.byteLength;
if (totalSize > maxBytes) {
reader.cancel();
throw new Error("Request body too large");
}
chunks.push(decoder.decode(result.value, { stream: true }));
}
chunks.push(decoder.decode());
return chunks.join("");
}
export async function renderPage(request, url, manifest) {
const localeInfo = extractLocale(url);
const locale = localeInfo.locale;
const routeUrl = localeInfo.url;
const cookieHeader = request.headers.get("cookie") || "";
// i18n redirect: check NEXT_LOCALE cookie first, then Accept-Language
if (i18nConfig && !localeInfo.hadPrefix) {
const cookieLocale = parseCookieLocaleFromHeader(cookieHeader);
if (cookieLocale && cookieLocale !== i18nConfig.defaultLocale) {
return new Response(null, { status: 307, headers: { Location: "/" + cookieLocale + routeUrl } });
}
if (!cookieLocale && i18nConfig.localeDetection !== false) {
const detected = detectLocaleFromHeaders(request.headers);
if (detected && detected !== i18nConfig.defaultLocale) {
return new Response(null, { status: 307, headers: { Location: "/" + detected + routeUrl } });
}
}
}
const match = matchRoute(routeUrl, pageRoutes);
if (!match) {
return new Response("<!DOCTYPE html><html><body><h1>404 - Page not found</h1></body></html>",
{ status: 404, headers: { "Content-Type": "text/html" } });
}
const { route, params } = match;
return runWithRouterState(() =>
runWithHeadState(() =>
_runWithCacheState(() =>
runWithPrivateCache(() =>
runWithFetchCache(async () => {
try {
if (typeof setSSRContext === "function") {
setSSRContext({
pathname: routeUrl.split("?")[0],
query: { ...params, ...parseQuery(routeUrl) },
asPath: routeUrl,
locale: locale,
locales: i18nConfig ? i18nConfig.locales : undefined,
defaultLocale: i18nConfig ? i18nConfig.defaultLocale : undefined,
});
}
if (i18nConfig) {
globalThis.__VINEXT_LOCALE__ = locale;
globalThis.__VINEXT_LOCALES__ = i18nConfig.locales;
globalThis.__VINEXT_DEFAULT_LOCALE__ = i18nConfig.defaultLocale;
}
const pageModule = route.module;
const PageComponent = pageModule.default;
if (!PageComponent) {
return new Response("Page has no default export", { status: 500 });
}
// Handle getStaticPaths for dynamic routes
if (typeof pageModule.getStaticPaths === "function" && route.isDynamic) {
const pathsResult = await pageModule.getStaticPaths({
locales: i18nConfig ? i18nConfig.locales : [],
defaultLocale: i18nConfig ? i18nConfig.defaultLocale : "",
});
const fallback = pathsResult && pathsResult.fallback !== undefined ? pathsResult.fallback : false;
if (fallback === false) {
const paths = pathsResult && pathsResult.paths ? pathsResult.paths : [];
const isValidPath = paths.some(function(p) {
return Object.entries(p.params).every(function(entry) {
var key = entry[0], val = entry[1];
var actual = params[key];
if (Array.isArray(val)) {
return Array.isArray(actual) && val.join("/") === actual.join("/");
}
return String(val) === String(actual);
});
});
if (!isValidPath) {
return new Response("<!DOCTYPE html><html><body><h1>404 - Page not found</h1></body></html>",
{ status: 404, headers: { "Content-Type": "text/html" } });
}
}
}
let pageProps = {};
if (typeof pageModule.getServerSideProps === "function") {
const { req, res } = createReqRes(request, routeUrl, parseQuery(routeUrl), undefined);
const ctx = {
params, req, res,
query: parseQuery(routeUrl),
resolvedUrl: routeUrl,
locale: locale,
locales: i18nConfig ? i18nConfig.locales : undefined,
defaultLocale: i18nConfig ? i18nConfig.defaultLocale : undefined,
};
const result = await pageModule.getServerSideProps(ctx);
if (result && result.props) pageProps = result.props;
if (result && result.redirect) {
var gsspStatus = result.redirect.statusCode != null ? result.redirect.statusCode : (result.redirect.permanent ? 308 : 307);
return new Response(null, { status: gsspStatus, headers: { Location: sanitizeDestinationLocal(result.redirect.destination) } });
}
if (result && result.notFound) {
return new Response("404", { status: 404 });
}
}
// Build font Link header early so it's available for ISR cached responses too.
// Font preloads are module-level state populated at import time and persist across requests.
var _fontLinkHeader = "";
var _allFp = [];
try {
var _fpGoogle = typeof _getSSRFontPreloadsGoogle === "function" ? _getSSRFontPreloadsGoogle() : [];
var _fpLocal = typeof _getSSRFontPreloadsLocal === "function" ? _getSSRFontPreloadsLocal() : [];
_allFp = _fpGoogle.concat(_fpLocal);
if (_allFp.length > 0) {
_fontLinkHeader = _allFp.map(function(p) { return "<" + p.href + ">; rel=preload; as=font; type=" + p.type + "; crossorigin"; }).join(", ");
}
} catch (e) { /* font preloads not available */ }
let isrRevalidateSeconds = null;
if (typeof pageModule.getStaticProps === "function") {
const pathname = routeUrl.split("?")[0];
const cacheKey = "pages:" + (pathname === "/" ? "/" : pathname.replace(/\\/$/, ""));
const cached = await isrGet(cacheKey);
if (cached && !cached.isStale && cached.value.value && cached.value.value.kind === "PAGES") {
var _hitHeaders = {
"Content-Type": "text/html", "X-Vinext-Cache": "HIT",
"Cache-Control": "s-maxage=" + (cached.value.value.revalidate || 60) + ", stale-while-revalidate",
};
if (_fontLinkHeader) _hitHeaders["Link"] = _fontLinkHeader;
return new Response(cached.value.value.html, { status: 200, headers: _hitHeaders });
}
if (cached && cached.isStale && cached.value.value && cached.value.value.kind === "PAGES") {
triggerBackgroundRegeneration(cacheKey, async function() {
const freshResult = await pageModule.getStaticProps({ params });
if (freshResult && freshResult.props && typeof freshResult.revalidate === "number" && freshResult.revalidate > 0) {
await isrSet(cacheKey, { kind: "PAGES", html: cached.value.value.html, pageData: freshResult.props, headers: undefined, status: undefined }, freshResult.revalidate);
}
});
var _staleHeaders = {
"Content-Type": "text/html", "X-Vinext-Cache": "STALE",
"Cache-Control": "s-maxage=0, stale-while-revalidate",
};
if (_fontLinkHeader) _staleHeaders["Link"] = _fontLinkHeader;
return new Response(cached.value.value.html, { status: 200, headers: _staleHeaders });
}
const ctx = {
params,
locale: locale,
locales: i18nConfig ? i18nConfig.locales : undefined,
defaultLocale: i18nConfig ? i18nConfig.defaultLocale : undefined,
};
const result = await pageModule.getStaticProps(ctx);
if (result && result.props) pageProps = result.props;
if (result && result.redirect) {
var gspStatus = result.redirect.statusCode != null ? result.redirect.statusCode : (result.redirect.permanent ? 308 : 307);
return new Response(null, { status: gspStatus, headers: { Location: sanitizeDestinationLocal(result.redirect.destination) } });
}
if (result && result.notFound) {
return new Response("404", { status: 404 });
}
if (typeof result.revalidate === "number" && result.revalidate > 0) {
isrRevalidateSeconds = result.revalidate;
}
}
let element;
if (AppComponent) {
element = React.createElement(AppComponent, { Component: PageComponent, pageProps });
} else {
element = React.createElement(PageComponent, pageProps);
}
if (typeof resetSSRHead === "function") resetSSRHead();
if (typeof flushPreloads === "function") await flushPreloads();
const ssrHeadHTML = typeof getSSRHeadHTML === "function" ? getSSRHeadHTML() : "";
// Collect SSR font data (Google Font links, font preloads, font-face styles)
var fontHeadHTML = "";
function _escAttr(s) { return s.replace(/&/g, "&").replace(/"/g, """); }
try {
var fontLinks = typeof _getSSRFontLinks === "function" ? _getSSRFontLinks() : [];
for (var fl of fontLinks) { fontHeadHTML += '<link rel="stylesheet" href="' + _escAttr(fl) + '" />\\n '; }
} catch (e) { /* next/font/google not used */ }
// Emit <link rel="preload"> for all font files (reuse _allFp collected earlier for Link header)
for (var fp of _allFp) { fontHeadHTML += '<link rel="preload" href="' + _escAttr(fp.href) + '" as="font" type="' + _escAttr(fp.type) + '" crossorigin />\\n '; }
try {
var allFontStyles = [];
if (typeof _getSSRFontStylesGoogle === "function") allFontStyles.push(..._getSSRFontStylesGoogle());
if (typeof _getSSRFontStylesLocal === "function") allFontStyles.push(..._getSSRFontStylesLocal());
if (allFontStyles.length > 0) { fontHeadHTML += '<style data-vinext-fonts>' + allFontStyles.join("\\n") + '</style>\\n '; }
} catch (e) { /* font styles not available */ }
const pageModuleIds = route.filePath ? [route.filePath] : [];
const assetTags = collectAssetTags(manifest, pageModuleIds);
const nextDataPayload = {
props: { pageProps }, page: patternToNextFormat(route.pattern), query: params, isFallback: false,
};
if (i18nConfig) {
nextDataPayload.locale = locale;
nextDataPayload.locales = i18nConfig.locales;
nextDataPayload.defaultLocale = i18nConfig.defaultLocale;
}
const localeGlobals = i18nConfig
? ";window.__VINEXT_LOCALE__=" + safeJsonStringify(locale) +
";window.__VINEXT_LOCALES__=" + safeJsonStringify(i18nConfig.locales) +
";window.__VINEXT_DEFAULT_LOCALE__=" + safeJsonStringify(i18nConfig.defaultLocale)
: "";
const nextDataScript = "<script>window.__NEXT_DATA__ = " + safeJsonStringify(nextDataPayload) + localeGlobals + "</script>";
// Build the document shell with a placeholder for the streamed body
var BODY_MARKER = "<!--VINEXT_STREAM_BODY-->";
var shellHtml;
if (DocumentComponent) {
const docElement = React.createElement(DocumentComponent);
shellHtml = await renderToStringAsync(docElement);
shellHtml = shellHtml.replace("__NEXT_MAIN__", BODY_MARKER);
if (ssrHeadHTML || assetTags || fontHeadHTML) {
shellHtml = shellHtml.replace("</head>", " " + fontHeadHTML + ssrHeadHTML + "\\n " + assetTags + "\\n</head>");
}
shellHtml = shellHtml.replace("<!-- __NEXT_SCRIPTS__ -->", nextDataScript);
if (!shellHtml.includes("__NEXT_DATA__")) {
shellHtml = shellHtml.replace("</body>", " " + nextDataScript + "\\n</body>");
}
} else {
shellHtml = "<!DOCTYPE html>\\n<html>\\n<head>\\n <meta charset=\\"utf-8\\" />\\n <meta name=\\"viewport\\" content=\\"width=device-width, initial-scale=1\\" />\\n " + fontHeadHTML + ssrHeadHTML + "\\n " + assetTags + "\\n</head>\\n<body>\\n <div id=\\"__next\\">" + BODY_MARKER + "</div>\\n " + nextDataScript + "\\n</body>\\n</html>";
}
if (typeof setSSRContext === "function") setSSRContext(null);
// Split the shell at the body marker
var markerIdx = shellHtml.indexOf(BODY_MARKER);
var shellPrefix = shellHtml.slice(0, markerIdx);
var shellSuffix = shellHtml.slice(markerIdx + BODY_MARKER.length);
// Start the React body stream — progressive SSR (no allReady wait)
var bodyStream = await renderToReadableStream(element);
var encoder = new TextEncoder();
// Create a composite stream: prefix + body + suffix
var compositeStream = new ReadableStream({
async start(controller) {
controller.enqueue(encoder.encode(shellPrefix));
var reader = bodyStream.getReader();
try {
for (;;) {
var chunk = await reader.read();
if (chunk.done) break;
controller.enqueue(chunk.value);
}
} finally {
reader.releaseLock();
}
controller.enqueue(encoder.encode(shellSuffix));
controller.close();
}
});
// Cache the rendered HTML for ISR (needs the full string — re-render synchronously)
if (isrRevalidateSeconds !== null && isrRevalidateSeconds > 0) {
// Tee the stream so we can cache and respond simultaneously would be ideal,
// but ISR responses are rare on first hit. Re-render to get complete HTML for cache.
var isrElement;
if (AppComponent) {
isrElement = React.createElement(AppComponent, { Component: PageComponent, pageProps });
} else {
isrElement = React.createElement(PageComponent, pageProps);
}
var isrHtml = await renderToStringAsync(isrElement);
var fullHtml = shellPrefix + isrHtml + shellSuffix;
var isrPathname = url.split("?")[0];
var isrCacheKey = "pages:" + (isrPathname === "/" ? "/" : isrPathname.replace(/\\/$/, ""));
await isrSet(isrCacheKey, { kind: "PAGES", html: fullHtml, pageData: pageProps, headers: undefined, status: undefined }, isrRevalidateSeconds);
}
const responseHeaders = { "Content-Type": "text/html" };
if (isrRevalidateSeconds) {
responseHeaders["Cache-Control"] = "s-maxage=" + isrRevalidateSeconds + ", stale-while-revalidate";
responseHeaders["X-Vinext-Cache"] = "MISS";
}
// Set HTTP Link header for font preloading
if (_fontLinkHeader) {
responseHeaders["Link"] = _fontLinkHeader;
}
return new Response(compositeStream, { status: 200, headers: responseHeaders });
} catch (e) {
console.error("[vinext] SSR error:", e);
return new Response("Internal Server Error", { status: 500 });
}
}) // end runWithFetchCache
) // end runWithPrivateCache
) // end _runWithCacheState
) // end runWithHeadState
); // end runWithRouterState
}
export async function handleApiRoute(request, url) {
const match = matchRoute(url, apiRoutes);
if (!match) {
return new Response("404 - API route not found", { status: 404 });
}
const { route, params } = match;
const handler = route.module.default;
if (typeof handler !== "function") {
return new Response("API route does not export a default function", { status: 500 });
}
const query = { ...params };
const qs = url.split("?")[1];
if (qs) {
for (const [k, v] of new URLSearchParams(qs)) {
if (k in query) {
// Multi-value: promote to array (Next.js returns string[] for duplicate keys)
query[k] = Array.isArray(query[k]) ? query[k].concat(v) : [query[k], v];
} else {
query[k] = v;
}
}
}
// Parse request body (enforce 1MB limit to prevent memory exhaustion,
// matching Next.js default bodyParser sizeLimit).
// Check Content-Length first as a fast path, then enforce on the actual
// stream to prevent bypasses via chunked transfer encoding.
const contentLength = parseInt(request.headers.get("content-length") || "0", 10);
if (contentLength > 1 * 1024 * 1024) {
return new Response("Request body too large", { status: 413 });
}
let body;
const ct = request.headers.get("content-type") || "";
let rawBody;
try { rawBody = await readBodyWithLimit(request, 1 * 1024 * 1024); }
catch { return new Response("Request body too large", { status: 413 }); }
if (!rawBody) {
body = undefined;
} else if (ct.includes("application/json")) {
try { body = JSON.parse(rawBody); } catch { body = rawBody; }
} else {
body = rawBody;
}
const { req, res, responsePromise } = createReqRes(request, url, query, body);
try {
await handler(req, res);
// If handler didn't call res.end(), end it now.
// The end() method is idempotent — safe to call twice.
res.end();
return await responsePromise;
} catch (e) {
console.error("[vinext] API error:", e);
return new Response("Internal Server Error", { status: 500 });
}
}
${middlewareExportCode}
`;
}
/**
* Generate the virtual client hydration entry module.
* This is the entry point for `vite build` (client bundle).
*
* It maps route patterns to dynamic imports of page modules so Vite
* code-splits each page into its own chunk. At runtime it reads
* __NEXT_DATA__ to determine which page to hydrate.
*/
async function generateClientEntry(): Promise<string> {
const pageRoutes = await pagesRouter(pagesDir);
const hasApp = fs.existsSync(path.join(pagesDir, "_app.tsx")) || fs.existsSync(path.join(pagesDir, "_app.jsx")) || fs.existsSync(path.join(pagesDir, "_app.ts")) || fs.existsSync(path.join(pagesDir, "_app.js"));
// Build a map of route pattern -> dynamic import.
// Keys must use Next.js bracket format (e.g. "/user/[id]") to match
// __NEXT_DATA__.page which is set via patternToNextFormat() during SSR.
const loaderEntries = pageRoutes.map((r: Route) => {
const absPath = r.filePath.replace(/\\/g, "/");
const nextFormatPattern = pagesPatternToNextFormat(r.pattern);
// JSON.stringify safely escapes quotes, backslashes, and special chars in
// both the route pattern and the absolute file path.
// lgtm[js/bad-code-sanitization]
return ` ${JSON.stringify(nextFormatPattern)}: () => import(${JSON.stringify(absPath)})`;
});
const appFileBase = path.join(pagesDir, "_app").replace(/\\/g, "/");
return `
import React from "react";
import { hydrateRoot } from "react-dom/client";
// Eagerly import the router shim so its module-level popstate listener is
// registered. Without this, browser back/forward buttons do nothing because
// navigateClient() is never invoked on history changes.
import "next/router";
const pageLoaders = {
${loaderEntries.join(",\n")}
};
async function hydrate() {
const nextData = window.__NEXT_DATA__;
if (!nextData) {
console.error("[vinext] No __NEXT_DATA__ found");
return;
}
const { pageProps } = nextData.props;
const loader = pageLoaders[nextData.page];
if (!loader) {
console.error("[vinext] No page loader for route:", nextData.page);
return;
}
const pageModule = await loader();
const PageComponent = pageModule.default;
if (!PageComponent) {
console.error("[vinext] Page module has no default export");
return;
}
let element;
${hasApp ? `
try {
const appModule = await import(${JSON.stringify(appFileBase)});
const AppComponent = appModule.default;
window.__VINEXT_APP__ = AppComponent;
element = React.createElement(AppComponent, { Component: PageComponent, pageProps });
} catch {
element = React.createElement(PageComponent, pageProps);
}
` : `
element = React.createElement(PageComponent, pageProps);
`}
const container = document.getElementById("__next");
if (!container) {
console.error("[vinext] No #__next element found");
return;
}
const root = hydrateRoot(container, element);
window.__VINEXT_ROOT__ = root;
}
hydrate();
`;
}
// Auto-register @vitejs/plugin-rsc when App Router is detected.
// Check eagerly at call time using the same heuristic as config().
// Must mirror the full detection logic: check {base}/app then {base}/src/app.
const autoRsc = options.rsc !== false;
const earlyBaseDir = options.appDir ?? process.cwd();
const earlyAppDirExists =
fs.existsSync(path.join(earlyBaseDir, "app")) ||
fs.existsSync(path.join(earlyBaseDir, "src", "app"));
// IMPORTANT: Resolve @vitejs/plugin-rsc subpath imports from the user's
// project root, not from vinext's own package location. When vinext is
// installed via symlink (npm file: deps, pnpm workspace:*), a bare
// import() resolves from vinext's realpath, which can find a different
// copy of the RSC plugin (and transitively a different copy of vite).
// This causes instanceof RunnableDevEnvironment checks to fail at
// runtime because the Vite server and the RSC plugin end up with
// different class identities. Resolving from the project root ensures a
// single shared vite instance.
//
// Pre-resolve both the main plugin and the /transforms subpath eagerly
// so all import() calls in this module use consistent resolution.
const earlyRequire = createRequire(path.join(earlyBaseDir, "package.json"));
let resolvedRscPath: string | null = null;
let resolvedRscTransformsPath: string | null = null;
try {
resolvedRscPath = earlyRequire.resolve("@vitejs/plugin-rsc");
resolvedRscTransformsPath = earlyRequire.resolve("@vitejs/plugin-rsc/transforms");
} catch {
// @vitejs/plugin-rsc not installed — that's fine for Pages Router
// projects. If App Router is detected, the error is thrown below.
}
// If app/ exists and auto-RSC is enabled, create a lazy Promise that
// resolves to the configured RSC plugin array. Vite's asyncFlatten
// will resolve this before processing the plugin list.
let rscPluginPromise: Promise<Plugin[]> | null = null;
if (earlyAppDirExists && autoRsc) {
if (!resolvedRscPath) {
throw new Error(
"vinext: App Router detected but @vitejs/plugin-rsc is not installed.\n" +
"Run: npm install -D @vitejs/plugin-rsc",
);
}
const rscImport = import(pathToFileURL(resolvedRscPath).href);
rscPluginPromise = rscImport
.then((mod) => {
const rsc = mod.default;
return rsc({
entries: {
rsc: VIRTUAL_RSC_ENTRY,
ssr: VIRTUAL_APP_SSR_ENTRY,
client: VIRTUAL_APP_BROWSER_ENTRY,
},
});
});
}
const plugins: (Plugin | Promise<Plugin[]>)[] = [
// Resolve tsconfig paths/baseUrl aliases so real-world Next.js repos
// that use @/*, #/*, or baseUrl imports work out of the box.
tsconfigPaths(),
{
name: "vinext:config",
enforce: "pre",
async config(config) {
root = config.root ?? process.cwd();
// Resolve the base directory for app/pages detection.
// If appDir is provided, resolve it (supports both relative and absolute paths).
// If not provided, auto-detect: check root first, then src/ subdirectory.
let baseDir: string;
if (options.appDir) {
baseDir = path.isAbsolute(options.appDir)
? options.appDir
: path.resolve(root, options.appDir);
} else {
// Auto-detect: prefer root-level app/ and pages/, fall back to src/
const hasRootApp = fs.existsSync(path.join(root, "app"));
const hasRootPages = fs.existsSync(path.join(root, "pages"));
const hasSrcApp = fs.existsSync(path.join(root, "src", "app"));
const hasSrcPages = fs.existsSync(path.join(root, "src", "pages"));
if (hasRootApp || hasRootPages) {
baseDir = root;
} else if (hasSrcApp || hasSrcPages) {
baseDir = path.join(root, "src");
} else {
baseDir = root;
}
}
pagesDir = path.join(baseDir, "pages");
appDir = path.join(baseDir, "app");
hasPagesDir = fs.existsSync(pagesDir);
hasAppDir = fs.existsSync(appDir);
middlewarePath = findMiddlewareFile(root);
instrumentationPath = findInstrumentationFile(root);
// Load next.config.js if present (always from project root, not src/)
const rawConfig = await loadNextConfig(root);
nextConfig = await resolveNextConfig(rawConfig);
// Merge env from next.config.js with NEXT_PUBLIC_* env vars
const defines = getNextPublicEnvDefines();
for (const [key, value] of Object.entries(nextConfig.env)) {
defines[`process.env.${key}`] = JSON.stringify(value);
}
// Expose basePath to client-side code
defines["process.env.__NEXT_ROUTER_BASEPATH"] = JSON.stringify(
nextConfig.basePath,
);
// Expose image remote patterns for validation in next/image shim
defines["process.env.__VINEXT_IMAGE_REMOTE_PATTERNS"] = JSON.stringify(
JSON.stringify(nextConfig.images?.remotePatterns ?? []),
);
defines["process.env.__VINEXT_IMAGE_DOMAINS"] = JSON.stringify(
JSON.stringify(nextConfig.images?.domains ?? []),
);
// Expose allowed image widths (union of deviceSizes + imageSizes) for
// server-side validation. Matches Next.js behavior: only configured
// sizes are accepted by the image optimization endpoint.
{
const deviceSizes = nextConfig.images?.deviceSizes ?? [640, 750, 828, 1080, 1200, 1920, 2048, 3840];
const imageSizes = nextConfig.images?.imageSizes ?? [16, 32, 48, 64, 96, 128, 256, 384];
defines["process.env.__VINEXT_IMAGE_DEVICE_SIZES"] = JSON.stringify(
JSON.stringify(deviceSizes),
);
defines["process.env.__VINEXT_IMAGE_SIZES"] = JSON.stringify(
JSON.stringify(imageSizes),
);
}
// Draft mode secret — generated once at build time so the
// __prerender_bypass cookie is consistent across all server
// instances (e.g. multiple Cloudflare Workers isolates).
defines["process.env.__VINEXT_DRAFT_SECRET"] = JSON.stringify(
crypto.randomUUID(),
);
// Build the shim alias map — used by both resolve.alias and resolveId
// (resolveId handles .js extension variants for libraries like nuqs)
nextShimMap = {
"next/link": path.join(shimsDir, "link"),
"next/head": path.join(shimsDir, "head"),
"next/router": path.join(shimsDir, "router"),
"next/image": path.join(shimsDir, "image"),
"next/legacy/image": path.join(shimsDir, "legacy-image"),
"next/dynamic": path.join(shimsDir, "dynamic"),
"next/app": path.join(shimsDir, "app"),
"next/document": path.join(shimsDir, "document"),
"next/config": path.join(shimsDir, "config"),
"next/script": path.join(shimsDir, "script"),
"next/server": path.join(shimsDir, "server"),
"next/navigation": path.join(shimsDir, "navigation"),
"next/headers": path.join(shimsDir, "headers"),
"next/font/google": path.join(shimsDir, "font-google"),
"next/font/local": path.join(shimsDir, "font-local"),
"next/cache": path.join(shimsDir, "cache"),
"next/form": path.join(shimsDir, "form"),
"next/og": path.join(shimsDir, "og"),
"next/web-vitals": path.join(shimsDir, "web-vitals"),
"next/amp": path.join(shimsDir, "amp"),
"next/error": path.join(shimsDir, "error"),
"next/constants": path.join(shimsDir, "constants"),
// Internal next/dist/* paths used by popular libraries
// (next-intl, @clerk/nextjs, @sentry/nextjs, next-nprogress-bar, etc.)
"next/dist/shared/lib/app-router-context.shared-runtime": path.join(shimsDir, "internal", "app-router-context"),
"next/dist/shared/lib/app-router-context": path.join(shimsDir, "internal", "app-router-context"),
"next/dist/shared/lib/router-context.shared-runtime": path.join(shimsDir, "internal", "router-context"),
"next/dist/shared/lib/utils": path.join(shimsDir, "internal", "utils"),
"next/dist/server/api-utils": path.join(shimsDir, "internal", "api-utils"),
"next/dist/server/web/spec-extension/cookies": path.join(shimsDir, "internal", "cookies"),
"next/dist/compiled/@edge-runtime/cookies": path.join(shimsDir, "internal", "cookies"),
"next/dist/server/app-render/work-unit-async-storage.external": path.join(shimsDir, "internal", "work-unit-async-storage"),
"next/dist/client/components/work-unit-async-storage.external": path.join(shimsDir, "internal", "work-unit-async-storage"),
"next/dist/client/components/request-async-storage.external": path.join(shimsDir, "internal", "work-unit-async-storage"),
"next/dist/client/components/request-async-storage": path.join(shimsDir, "internal", "work-unit-async-storage"),
// Re-export public modules for internal path imports
"next/dist/client/components/navigation": path.join(shimsDir, "navigation"),
"next/dist/server/config-shared": path.join(shimsDir, "internal", "utils"),
// server-only / client-only marker packages
"server-only": path.join(shimsDir, "server-only"),
"client-only": path.join(shimsDir, "client-only"),
"vinext/error-boundary": path.join(shimsDir, "error-boundary"),
"vinext/layout-segment-context": path.join(shimsDir, "layout-segment-context"),
"vinext/metadata": path.join(shimsDir, "metadata"),
"vinext/fetch-cache": path.join(shimsDir, "fetch-cache"),
"vinext/cache-runtime": path.join(shimsDir, "cache-runtime"),
"vinext/navigation-state": path.join(shimsDir, "navigation-state"),
"vinext/router-state": path.join(shimsDir, "router-state"),
"vinext/head-state": path.join(shimsDir, "head-state"),
"vinext/instrumentation": path.resolve(__dirname, "server", "instrumentation"),
"vinext/html": path.resolve(__dirname, "server", "html"),
};
// Detect if Cloudflare's vite plugin is present — if so, skip
// SSR externals (Workers bundle everything, can't have Node.js externals).
const pluginsFlat: any[] = [];
function flattenPlugins(arr: any[]) {
for (const p of arr) {
if (Array.isArray(p)) flattenPlugins(p);
else if (p) pluginsFlat.push(p);
}
}
flattenPlugins(config.plugins as any[] ?? []);
hasCloudflarePlugin = pluginsFlat.some(
(p: any) => p && typeof p === "object" && typeof p.name === "string" && (
p.name === "vite-plugin-cloudflare" || p.name.startsWith("vite-plugin-cloudflare:")
),
);
// Resolve PostCSS string plugin names that Vite can't handle.
// Next.js projects commonly use array-form plugins like
// `plugins: ["@tailwindcss/postcss"]` which postcss-load-config
// doesn't resolve (only object-form keys are resolved). We detect
// this and resolve the strings to actual plugin functions, then
// inject via css.postcss so Vite uses the resolved plugins.
// Only do this if the user hasn't already set css.postcss inline.
let postcssOverride: { plugins: any[] } | undefined;
if (!config.css?.postcss || typeof config.css.postcss === "string") {
postcssOverride = await resolvePostcssStringPlugins(root);
}
// Auto-inject @mdx-js/rollup when MDX files exist and no MDX plugin is
// already configured. Applies remark/rehype plugins from next.config.
const hasMdxPlugin = pluginsFlat.some(
(p: any) => p && typeof p === "object" && typeof p.name === "string" &&
(p.name === "@mdx-js/rollup" || p.name === "mdx"),
);
const mdxPlugins: any[] = [];
if (!hasMdxPlugin && hasMdxFiles(root, hasAppDir ? appDir : null, hasPagesDir ? pagesDir : null)) {
try {
const mdxRollup = await import("@mdx-js/rollup");
const mdxPlugin = mdxRollup.default ?? mdxRollup;
const mdxOpts: Record<string, unknown> = {};
if (nextConfig.mdx) {
if (nextConfig.mdx.remarkPlugins) mdxOpts.remarkPlugins = nextConfig.mdx.remarkPlugins;
if (nextConfig.mdx.rehypePlugins) mdxOpts.rehypePlugins = nextConfig.mdx.rehypePlugins;
if (nextConfig.mdx.recmaPlugins) mdxOpts.recmaPlugins = nextConfig.mdx.recmaPlugins;
}
mdxPlugins.push(mdxPlugin(mdxOpts));
if (nextConfig.mdx) {
console.log("[vinext] Auto-injected @mdx-js/rollup with remark/rehype plugins from next.config");
} else {
console.log("[vinext] Auto-injected @mdx-js/rollup for MDX support");
}
} catch {
// @mdx-js/rollup not installed — warn but don't fail
console.warn(
"[vinext] MDX files detected but @mdx-js/rollup is not installed. " +
"Install it with: npm install -D @mdx-js/rollup"
);
}
}
// Detect if this is a standalone SSR build (set by `vite build --ssr`
// or `build.ssr` in config). SSR builds must NOT use manualChunks
// because they use inlineDynamicImports which is incompatible.
const isSSR = !!config.build?.ssr;
// Detect if this is a multi-environment build (App Router or Cloudflare).
// In multi-env builds, manualChunks must only be set per-environment
// (on the client env), not globally — otherwise it leaks into RSC/SSR
// environments where it can cause asset resolution issues.
const isMultiEnv = hasAppDir || hasCloudflarePlugin;
const viteConfig: Record<string, any> = {
// Disable Vite's default HTML serving - we handle all routing
appType: "custom",
build: {
rollupOptions: {
// Suppress "Module level directives cause errors when bundled"
// warnings for "use client" / "use server" directives. Our shims
// and third-party libraries legitimately use these directives;
// they are handled by the RSC plugin and are harmless in the
// final bundle. We preserve any user-supplied onwarn so custom
// warning handling is not lost.
onwarn: (() => {
const userOnwarn = config.build?.rollupOptions?.onwarn;
return (warning: any, defaultHandler: any) => {
if (
warning.code === "MODULE_LEVEL_DIRECTIVE" &&
(warning.message?.includes('"use client"') ||
warning.message?.includes('"use server"'))
) {
return;
}
if (userOnwarn) {
userOnwarn(warning, defaultHandler);
} else {
defaultHandler(warning);
}
};
})(),
// Enable aggressive tree-shaking for client builds.
// See clientTreeshakeConfig for rationale.
// Only apply globally for standalone client builds (Pages Router
// CLI). For multi-environment builds (App Router, Cloudflare),
// treeshake is set per-environment on the client env below to
// avoid leaking into RSC/SSR environments where
// moduleSideEffects: 'no-external' could drop server packages
// that rely on module-level side effects.
...(!isSSR && !isMultiEnv ? { treeshake: clientTreeshakeConfig } : {}),
// Code-split client bundles: separate framework (React/ReactDOM),
// vinext runtime (shims), and vendor packages into their own
// chunks so pages only load the JS they need.
// Only apply globally for standalone client builds (CLI Pages
// Router). For multi-environment builds (App Router, Cloudflare),
// manualChunks is set per-environment on the client env below
// to avoid leaking into RSC/SSR environments.
...(!isSSR && !isMultiEnv ? { output: clientOutputConfig } : {}),
},
},
// Let OPTIONS requests pass through Vite's CORS middleware to our
// route handlers so they can set the Allow header and run user-defined
// OPTIONS handlers. Without this, Vite's CORS middleware responds to
// OPTIONS with a 204 before the request reaches vinext's handler.
// Keep Vite's default restrictive origin policy by explicitly
// setting it. Without the `origin` field, `preflightContinue: true`
// would override Vite's default and allow any origin.
server: {
cors: {
preflightContinue: true,
origin: /^https?:\/\/(?:(?:[^:]+\.)?localhost|127\.0\.0\.1|\[::1\])(?::\d+)?$/,
},
},
// Externalize React packages from SSR transform — they are CJS and
// must be loaded natively by Node, not through Vite's ESM evaluator.
// Skip when targeting Cloudflare Workers (they bundle everything).
...(hasCloudflarePlugin ? {} : {
ssr: {
external: ["react", "react-dom", "react-dom/server"],
},
}),
resolve: {
alias: nextShimMap,
// Dedupe React packages to prevent dual-instance errors.
// When vinext is linked (npm link / bun link) or any dependency
// brings its own React copy, multiple React instances can load,
// causing cryptic "Invalid hook call" errors. This is a no-op
// when only one copy exists.
dedupe: [
"react",
"react-dom",
"react/jsx-runtime",
"react/jsx-dev-runtime",
],
},
// Exclude vinext from dependency optimization so esbuild doesn't
// scan dist files containing virtual module imports (virtual:vinext-*)
// that only resolve at Vite plugin time, not during pre-bundling.
optimizeDeps: {
exclude: ["vinext"],
},
// Enable JSX in .tsx/.jsx files
// Vite 7 uses `esbuild` for transforms, Vite 8+ uses `oxc`
...(getViteMajorVersion() >= 8
? { oxc: { jsx: { runtime: "automatic" } } }
: { esbuild: { jsx: "automatic" } }),
// Define env vars for client bundle
define: defines,
// Set base path if configured
...(nextConfig.basePath ? { base: nextConfig.basePath + "/" } : {}),
// Inject resolved PostCSS plugins if string names were found
...(postcssOverride ? { css: { postcss: postcssOverride } } : {}),
};
// If app/ directory exists, configure RSC environments
if (hasAppDir) {
// Compute optimizeDeps.entries so Vite discovers server-side
// dependencies at startup instead of on first request. Without
// this, deps imported in rsc/ssr environments are found lazily,
// causing re-optimisation cascades and runtime errors (e.g.
// "Invalid hook call" from duplicate React instances).
// The entries must be relative to the project root.
const relAppDir = path.relative(root, appDir);
const appEntries = [
`${relAppDir}/**/*.{tsx,ts,jsx,js}`,
];
viteConfig.environments = {
rsc: {
...(hasCloudflarePlugin ? {} : {
resolve: {
// Externalize native/heavy packages so the RSC environment
// loads them natively via Node rather than through Vite's
// ESM module evaluator (which can't handle native addons).
// Note: Do NOT externalize react/react-dom here — they must
// be bundled with the "react-server" condition for RSC.
// Skip when targeting Cloudflare Workers.
external: [
"satori",
"@resvg/resvg-js",
"yoga-wasm-web",
],
},
}),
optimizeDeps: {
exclude: ["vinext"],
entries: appEntries,
},
build: {
outDir: "dist/server",
rollupOptions: {
input: { index: VIRTUAL_RSC_ENTRY },
},
},
},
ssr: {
optimizeDeps: {
exclude: ["vinext"],
entries: appEntries,
},
build: {
outDir: "dist/server/ssr",
rollupOptions: {
input: { index: VIRTUAL_APP_SSR_ENTRY },
},
},
},
client: {
optimizeDeps: {
exclude: ["vinext"],
// react and react-dom are framework dependencies used for
// hydration. They aren't crawled from app/ source files so
// must be pre-included to prevent late discovery and page
// reloads during development.
include: ["react", "react-dom", "react-dom/client"],
},
build: {
// When targeting Cloudflare Workers, enable manifest generation
// so the vinext:cloudflare-build closeBundle hook can read the
// client build manifest, compute lazy chunks (only reachable
// via dynamic imports), and inject __VINEXT_LAZY_CHUNKS__ into
// the worker entry. Without this, all chunks are modulepreloaded
// on every page — defeating code-splitting for React.lazy() and
// next/dynamic boundaries.
...(hasCloudflarePlugin ? { manifest: true } : {}),
rollupOptions: {
input: { index: VIRTUAL_APP_BROWSER_ENTRY },
output: clientOutputConfig,
treeshake: clientTreeshakeConfig,
},
},
},
};
} else if (hasCloudflarePlugin) {
// Pages Router on Cloudflare Workers: add a client environment
// so the multi-environment build produces client JS bundles
// alongside the worker. Without this, only the worker is built
// and there's no client-side hydration.
viteConfig.environments = {
client: {
build: {
manifest: true,
ssrManifest: true,
rollupOptions: {
input: { index: VIRTUAL_CLIENT_ENTRY },
output: clientOutputConfig,
treeshake: clientTreeshakeConfig,
},
},
},
};
}
// Add auto-injected MDX plugin if needed
if (mdxPlugins.length > 0) {
viteConfig.plugins = mdxPlugins;
}
return viteConfig;
},
configResolved(config) {
// Detect double RSC plugin registration. When vinext auto-injects
// @vitejs/plugin-rsc AND the user also registers it manually, the
// RSC transform pipeline runs twice — doubling build time.
// Rather than trying to magically fix this at runtime, fail fast
// with a clear error telling the user how to fix their config.
if (rscPluginPromise) {
// Count top-level RSC plugins (name === "rsc") — each call to
// the rsc() factory produces exactly one plugin with this name.
const rscRootPlugins = config.plugins.filter(
(p: any) => p && p.name === "rsc",
);
if (rscRootPlugins.length > 1) {
throw new Error(
"[vinext] Duplicate @vitejs/plugin-rsc detected.\n" +
" vinext auto-registers @vitejs/plugin-rsc when app/ is detected.\n" +
" Your config also registers it manually, which doubles build time.\n\n" +
" Fix: remove the explicit rsc() call from your plugins array.\n" +
" Or: pass rsc: false to vinext() if you want to configure rsc() yourself.",
);
}
}
},
resolveId: {
// Hook filter: only invoke JS for next/* imports and virtual:vinext-* modules.
// Matches "next/navigation", "next/router.js", "virtual:vinext-rsc-entry",
// and \0-prefixed re-imports from @vitejs/plugin-rsc.
filter: {
id: /(?:next\/|virtual:vinext-)/,
},
handler(id) {
// Strip \0 prefix if present — @vitejs/plugin-rsc's generated
// browser entry imports our virtual module using the already-resolved
// ID (with \0 prefix). We need to re-resolve it so the client
// environment's import-analysis can find it.
const cleanId = id.startsWith("\0") ? id.slice(1) : id;
// Handle next/* imports with .js extension (e.g. "next/navigation.js")
// Libraries like nuqs import "next/navigation.js" which doesn't match
// our resolve.alias for "next/navigation". Strip the .js and resolve
// through our shim map, appending .js to the resolved path.
if (cleanId.startsWith("next/") && cleanId.endsWith(".js")) {
const withoutExt = cleanId.slice(0, -3);
if (nextShimMap[withoutExt]) {
const shimPath = nextShimMap[withoutExt];
// Alias values don't include .js — append it for resolveId
return shimPath.endsWith(".js") ? shimPath : shimPath + ".js";
}
}
// Pages Router virtual modules
if (cleanId === VIRTUAL_SERVER_ENTRY) return RESOLVED_SERVER_ENTRY;
if (cleanId === VIRTUAL_CLIENT_ENTRY) return RESOLVED_CLIENT_ENTRY;
if (cleanId.endsWith("/" + VIRTUAL_SERVER_ENTRY) || cleanId.endsWith("\\" + VIRTUAL_SERVER_ENTRY)) {
return RESOLVED_SERVER_ENTRY;
}
if (cleanId.endsWith("/" + VIRTUAL_CLIENT_ENTRY) || cleanId.endsWith("\\" + VIRTUAL_CLIENT_ENTRY)) {
return RESOLVED_CLIENT_ENTRY;
}
// App Router virtual modules
if (cleanId === VIRTUAL_RSC_ENTRY) return RESOLVED_RSC_ENTRY;
if (cleanId === VIRTUAL_APP_SSR_ENTRY) return RESOLVED_APP_SSR_ENTRY;
if (cleanId === VIRTUAL_APP_BROWSER_ENTRY) return RESOLVED_APP_BROWSER_ENTRY;
if (cleanId.endsWith("/" + VIRTUAL_RSC_ENTRY) || cleanId.endsWith("\\" + VIRTUAL_RSC_ENTRY)) {
return RESOLVED_RSC_ENTRY;
}
if (cleanId.endsWith("/" + VIRTUAL_APP_SSR_ENTRY) || cleanId.endsWith("\\" + VIRTUAL_APP_SSR_ENTRY)) {
return RESOLVED_APP_SSR_ENTRY;
}
if (cleanId.endsWith("/" + VIRTUAL_APP_BROWSER_ENTRY) || cleanId.endsWith("\\" + VIRTUAL_APP_BROWSER_ENTRY)) {
return RESOLVED_APP_BROWSER_ENTRY;
}
},
},
async load(id) {
// Pages Router virtual modules
if (id === RESOLVED_SERVER_ENTRY) {
return await generateServerEntry();
}
if (id === RESOLVED_CLIENT_ENTRY) {
return await generateClientEntry();
}
// App Router virtual modules
if (id === RESOLVED_RSC_ENTRY && hasAppDir) {
const routes = await appRouter(appDir);
const metaRoutes = scanMetadataFiles(appDir);
// Check for global-error.tsx at app root
const globalErrorPath = findFileWithExts(appDir, "global-error");
return generateRscEntry(appDir, routes, middlewarePath, metaRoutes, globalErrorPath, nextConfig?.basePath, nextConfig?.trailingSlash, {
redirects: nextConfig?.redirects,
rewrites: nextConfig?.rewrites,
headers: nextConfig?.headers,
allowedOrigins: nextConfig?.serverActionsAllowedOrigins,
allowedDevOrigins: nextConfig?.serverActionsAllowedOrigins,
});
}
if (id === RESOLVED_APP_SSR_ENTRY && hasAppDir) {
return generateSsrEntry();
}
if (id === RESOLVED_APP_BROWSER_ENTRY && hasAppDir) {
return generateBrowserEntry();
}
},
},
// Shim React canary/experimental APIs (ViewTransition, addTransitionType)
// that exist in Next.js's bundled React canary but not in stable React 19.
// Provides graceful no-op fallbacks so projects using these APIs degrade
// instead of crashing with "does not provide an export named 'ViewTransition'".
{
name: "vinext:react-canary",
enforce: "pre",
resolveId(id) {
if (id === "virtual:vinext-react-canary") return "\0virtual:vinext-react-canary";
},
load(id) {
if (id === "\0virtual:vinext-react-canary") {
return [
`export * from "react";`,
`export { default } from "react";`,
`import * as _React from "react";`,
`export const ViewTransition = _React.ViewTransition || function ViewTransition({ children }) { return children; };`,
`export const addTransitionType = _React.addTransitionType || function addTransitionType() {};`,
].join("\n");
}
},
transform(code, id) {
// Only transform user source files, not node_modules or virtual modules
if (id.includes("node_modules")) return null;
if (id.startsWith("\0")) return null;
if (!/\.(tsx?|jsx?|mjs)$/.test(id)) return null;
// Quick check: does this file reference canary APIs and import from "react"?
if (
!(code.includes("ViewTransition") || code.includes("addTransitionType")) ||
!/from\s+['"]react['"]/.test(code)
) {
return null;
}
// Only rewrite if the import actually destructures a canary API
const canaryImportRegex = /import\s*\{[^}]*(ViewTransition|addTransitionType)[^}]*\}\s*from\s*['"]react['"]/;
if (!canaryImportRegex.test(code)) return null;
// Rewrite all `from "react"` / `from 'react'` to use the canary shim.
// This is safe because the virtual module re-exports everything from
// react, so non-canary imports continue to work.
const result = code.replace(
/from\s*['"]react['"]/g,
'from "virtual:vinext-react-canary"',
);
if (result !== code) {
return { code: result, map: null };
}
return null;
},
},
{
name: "vinext:pages-router",
// HMR: trigger full-reload for Pages Router page changes.
// Without @vitejs/plugin-react (React Fast Refresh), component edits
// can't be hot-updated. In theory Vite's default propagation should
// reach the root and trigger a full-reload, but the Pages Router
// injects hydration via inline <script type="module"> which may not
// be tracked in the module graph. Explicitly sending full-reload
// ensures changes are always reflected in the browser.
hotUpdate(options: { file: string; server: ViteDevServer; modules: any[] }) {
if (!hasPagesDir || hasAppDir) return;
const ext = /\.(tsx?|jsx?|mdx)$/;
if (options.file.startsWith(pagesDir) && ext.test(options.file)) {
options.server.environments.client.hot.send({ type: "full-reload" });
return [];
}
},
configureServer(server: ViteDevServer) {
// Watch pages directory for file additions/removals to invalidate route cache.
const pageExtensions = /\.(tsx?|jsx?|mdx)$/;
server.watcher.on("add", (filePath: string) => {
if (hasPagesDir && filePath.startsWith(pagesDir) && pageExtensions.test(filePath)) {
invalidateRouteCache(pagesDir);
}
if (hasAppDir && filePath.startsWith(appDir) && pageExtensions.test(filePath)) {
invalidateAppRouteCache();
}
});
server.watcher.on("unlink", (filePath: string) => {
if (hasPagesDir && filePath.startsWith(pagesDir) && pageExtensions.test(filePath)) {
invalidateRouteCache(pagesDir);
}
if (hasAppDir && filePath.startsWith(appDir) && pageExtensions.test(filePath)) {
invalidateAppRouteCache();
}
});
// Run instrumentation.ts register() if present (once at server startup)
if (instrumentationPath) {
runInstrumentation(server, instrumentationPath).catch((err) => {
console.error("[vinext] Instrumentation error:", err);
});
}
// Return a function to register middleware AFTER Vite's built-in middleware
return () => {
server.middlewares.use(async (req: any, res: any, next: any) => {
try {
let url: string = req.url ?? "/";
// If no pages directory, skip this middleware entirely
// (app router is handled by @vitejs/plugin-rsc's built-in middleware)
if (!hasPagesDir) return next();
// Skip Vite internal requests and static files
if (
url.startsWith("/@") ||
url.startsWith("/__vite") ||
url.startsWith("/node_modules")
) {
return next();
}
// Skip .rsc requests — those are for the App Router RSC handler
if (url.split("?")[0].endsWith(".rsc")) {
return next();
}
// ── Cross-origin request protection ─────────────────────────
// Block requests from non-localhost origins to prevent
// cross-origin data exfiltration from the dev server.
const blockReason = validateDevRequest(
{
origin: req.headers.origin as string | undefined,
host: req.headers.host,
"x-forwarded-host": req.headers["x-forwarded-host"] as string | undefined,
"sec-fetch-site": req.headers["sec-fetch-site"] as string | undefined,
"sec-fetch-mode": req.headers["sec-fetch-mode"] as string | undefined,
},
nextConfig?.serverActionsAllowedOrigins,
);
if (blockReason) {
console.warn(`[vinext] Blocked dev request: ${blockReason} (${url})`);
res.writeHead(403, { "Content-Type": "text/plain" });
res.end("Forbidden");
return;
}
// ── Image optimization passthrough (dev mode) ─────────────
// In dev, redirect to the original asset URL so Vite serves it.
if (url.split("?")[0] === "/_vinext/image") {
const imgParams = new URLSearchParams(url.split("?")[1] ?? "");
const rawImgUrl = imgParams.get("url");
// Normalize backslashes: browsers and the URL constructor treat
// /\evil.com as //evil.com, bypassing the // check.
const imgUrl = rawImgUrl?.replaceAll("\\", "/") ?? null;
// Allowlist: must start with "/" but not "//" — blocks absolute
// URLs, protocol-relative, backslash variants, and exotic schemes.
if (!imgUrl || !imgUrl.startsWith("/") || imgUrl.startsWith("//")) {
res.writeHead(400);
res.end(!rawImgUrl ? "Missing url parameter" : "Only relative URLs allowed");
return;
}
// Validate the constructed URL's origin hasn't changed (defense in depth).
const resolvedImg = new URL(imgUrl, `http://${req.headers.host || "localhost"}`);
if (resolvedImg.origin !== `http://${req.headers.host || "localhost"}`) {
res.writeHead(400);
res.end("Only relative URLs allowed");
return;
}
res.writeHead(302, { Location: imgUrl });
res.end();
return;
}
// Vite's built-in middleware may rewrite "/" to "/index.html".
// Normalize it back so our router can match correctly.
const rawPathname = url.split("?")[0];
if (rawPathname.endsWith("/index.html")) {
url = url.replace("/index.html", "/");
} else if (rawPathname.endsWith(".html")) {
// Strip .html extensions (e.g. "/about.html" -> "/about")
url = url.replace(/\.html(?=\?|$)/, "");
}
// Skip requests for files with extensions (static assets)
let pathname = url.split("?")[0];
if (pathname.includes(".") && !pathname.endsWith(".html")) {
return next();
}
// Guard against protocol-relative URL open redirects.
// Normalize backslashes first: browsers treat /\ as // in URL
// context. Check the RAW pathname before normalizePath so the
// guard fires before normalizePath collapses //.
pathname = pathname.replaceAll("\\", "/");
if (pathname.startsWith("//")) {
res.writeHead(404);
res.end("404 Not Found");
return;
}
// Normalize the pathname to prevent path-confusion attacks.
// decodeURIComponent prevents /%61dmin bypassing /admin matchers.
// normalizePath collapses // and resolves . / .. segments.
try {
pathname = normalizePath(decodeURIComponent(pathname));
} catch {
// Malformed percent-encoding (e.g. /%E0%A4%A) — return 400 instead of crashing.
res.writeHead(400);
res.end("Bad Request");
return;
}
// Strip basePath prefix from URL for route matching.
// All internal routing uses basePath-free paths.
//
// NOTE: When basePath is set, we also set Vite's `base` config to
// `basePath + "/"`. Vite's connect middleware stack strips the base
// prefix from req.url before passing it to our middleware, so the
// URL will already lack the basePath prefix. We still attempt to
// strip it (for robustness) but don't reject paths that don't start
// with basePath — Vite has already done the filtering.
const bp = nextConfig?.basePath ?? "";
if (bp && pathname.startsWith(bp)) {
const stripped = pathname.slice(bp.length) || "/";
const qs = url.includes("?") ? url.slice(url.indexOf("?")) : "";
url = stripped + qs;
pathname = stripped;
}
// Normalize trailing slash based on next.config.js trailingSlash setting.
// Redirect to the canonical form if needed.
if (nextConfig && pathname !== "/" && !pathname.startsWith("/api")) {
const hasTrailing = pathname.endsWith("/");
if (nextConfig.trailingSlash && !hasTrailing) {
// trailingSlash: true — redirect /about → /about/
const qs = url.includes("?") ? url.slice(url.indexOf("?")) : "";
const dest = bp + pathname + "/" + qs;
res.writeHead(308, { Location: dest });
res.end();
return;
} else if (!nextConfig.trailingSlash && hasTrailing) {
// trailingSlash: false (default) — redirect /about/ → /about
const qs = url.includes("?") ? url.slice(url.indexOf("?")) : "";
const dest = bp + pathname.replace(/\/+$/, "") + qs;
res.writeHead(308, { Location: dest });
res.end();
return;
}
}
// Run middleware.ts if present
if (middlewarePath) {
// Only trust X-Forwarded-Proto when behind a trusted proxy
const devTrustProxy = process.env.VINEXT_TRUST_PROXY === "1" || (process.env.VINEXT_TRUSTED_HOSTS ?? "").split(",").some(h => h.trim());
const rawProto = devTrustProxy
? String(req.headers["x-forwarded-proto"] || "").split(",")[0].trim()
: "";
const mwProto = rawProto === "https" || rawProto === "http" ? rawProto : "http";
const origin = `${mwProto}://${req.headers.host || "localhost"}`;
const middlewareRequest = new Request(new URL(url, origin), {
method: req.method,
headers: Object.fromEntries(
Object.entries(req.headers)
.filter(([, v]) => v !== undefined)
.map(([k, v]) => [k, Array.isArray(v) ? v.join(", ") : String(v)])
),
});
const result = await runMiddleware(server, middlewarePath, middlewareRequest);
if (!result.continue) {
if (result.redirectUrl) {
res.writeHead(result.redirectStatus ?? 307, {
Location: result.redirectUrl,
});
res.end();
return;
}
if (result.response) {
res.statusCode = result.response.status;
for (const [key, value] of result.response.headers) {
res.setHeader(key, value);
}
const body = await result.response.text();
res.end(body);
return;
}
}
// Apply middleware response headers
if (result.responseHeaders) {
for (const [key, value] of result.responseHeaders) {
res.setHeader(key, value);
}
}
// Apply middleware rewrite (URL and optional status code)
if (result.rewriteUrl) {
url = result.rewriteUrl;
}
if (result.rewriteStatus) {
(req as any).__vinextRewriteStatus = result.rewriteStatus;
}
}
// Apply custom headers from next.config.js
if (nextConfig?.headers.length) {
applyHeaders(pathname, res, nextConfig.headers);
}
// Apply redirects from next.config.js
if (nextConfig?.redirects.length) {
const redirected = applyRedirects(
pathname,
res,
nextConfig.redirects,
);
if (redirected) return;
}
// Apply rewrites from next.config.js (beforeFiles)
let resolvedUrl = url;
if (nextConfig?.rewrites.beforeFiles.length) {
resolvedUrl =
applyRewrites(pathname, nextConfig.rewrites.beforeFiles) ??
url;
}
// External rewrite from beforeFiles — proxy to external URL
if (isExternalUrl(resolvedUrl)) {
await proxyExternalRewriteNode(req, res, resolvedUrl);
return;
}
// Handle API routes first (pages/api/*)
const resolvedPathname = resolvedUrl.split("?")[0];
if (
resolvedPathname.startsWith("/api/") ||
resolvedPathname === "/api"
) {
const apiRoutes = await apiRouter(pagesDir);
const handled = await handleApiRoute(
server,
req,
res,
resolvedUrl,
apiRoutes,
);
if (handled) return;
// No API route matched — fall through to 404
res.statusCode = 404;
res.end("404 - API route not found");
return;
}
const routes = await pagesRouter(pagesDir);
// Apply afterFiles rewrites — these run after initial route matching
// If beforeFiles already rewrote the URL, afterFiles still run on the
// *resolved* pathname. Next.js applies these when route matching succeeds
// but allows overriding with rewrites.
if (nextConfig?.rewrites.afterFiles.length) {
const afterRewrite = applyRewrites(
resolvedUrl.split("?")[0],
nextConfig.rewrites.afterFiles,
);
if (afterRewrite) resolvedUrl = afterRewrite;
}
// External rewrite from afterFiles — proxy to external URL
if (isExternalUrl(resolvedUrl)) {
await proxyExternalRewriteNode(req, res, resolvedUrl);
return;
}
const handler = createSSRHandler(server, routes, pagesDir, nextConfig?.i18n);
const mwStatus = (req as any).__vinextRewriteStatus as number | undefined;
// Try rendering the resolved URL
const match = matchRoute(resolvedUrl.split("?")[0], routes);
if (match) {
await handler(req, res, resolvedUrl, mwStatus);
return;
}
// No route matched — try fallback rewrites
if (nextConfig?.rewrites.fallback.length) {
const fallbackRewrite = applyRewrites(
resolvedUrl.split("?")[0],
nextConfig.rewrites.fallback,
);
if (fallbackRewrite) {
// External fallback rewrite — proxy to external URL
if (isExternalUrl(fallbackRewrite)) {
await proxyExternalRewriteNode(req, res, fallbackRewrite);
return;
}
await handler(req, res, fallbackRewrite, mwStatus);
return;
}
}
// No fallback matched — render as-is (will hit 404 handler)
await handler(req, res, resolvedUrl, mwStatus);
} catch (e) {
next(e);
}
});
};
},
},
// Local image import transform:
// When a source file imports a local image (e.g., `import hero from './hero.jpg'`),
// this plugin transforms the default import to a StaticImageData object with
// { src, width, height } so the next/image shim can set correct dimensions
// on <img> tags, preventing CLS.
//
// Vite's default image import returns a URL string. We intercept this by
// adding a `?vinext-meta` suffix: the original import gets the URL from Vite,
// and we resolve the `?vinext-meta` virtual module to provide dimensions.
{
name: "vinext:image-imports",
enforce: "pre",
// Cache of image dimensions to avoid re-reading files
_dimCache: new Map<string, { width: number; height: number }>(),
resolveId: {
filter: { id: /\?vinext-meta$/ },
handler(source, _importer) {
if (!source.endsWith("?vinext-meta")) return null;
// Resolve the real image path from the importer
const realPath = source.replace("?vinext-meta", "");
return `\0vinext-image-meta:${realPath}`;
},
},
async load(id) {
if (!id.startsWith("\0vinext-image-meta:")) return null;
const imagePath = id.replace("\0vinext-image-meta:", "");
// Read from cache first
const cache = (this as any)._dimCache as Map<string, { width: number; height: number }>;
let dims = cache.get(imagePath);
if (!dims) {
try {
const { imageSize } = await import("image-size");
const buffer = fs.readFileSync(imagePath);
const result = imageSize(buffer);
dims = { width: result.width ?? 0, height: result.height ?? 0 };
cache.set(imagePath, dims);
} catch {
dims = { width: 0, height: 0 };
}
}
return `export default ${JSON.stringify(dims)};`;
},
transform: {
// Hook filter: Rolldown evaluates these on the Rust side, skipping
// the JS handler entirely for files that don't match.
filter: {
id: {
include: /\.(tsx?|jsx?|mjs)$/,
exclude: /node_modules/,
},
code: new RegExp(`import\\s+\\w+\\s+from\\s+['"][^'"]+\\.(${IMAGE_EXTS})['"]`),
},
async handler(code, id) {
// Defensive guard — duplicates filter logic
if (id.includes("node_modules")) return null;
if (id.startsWith("\0")) return null;
if (!id.match(/\.(tsx?|jsx?|mjs)$/)) return null;
const imageImportRe = new RegExp(`import\\s+(\\w+)\\s+from\\s+['"]([^'"]+\\.(${IMAGE_EXTS}))['"];?`, "g");
if (!imageImportRe.test(code)) return null;
imageImportRe.lastIndex = 0;
const s = new MagicString(code);
let hasChanges = false;
let match;
while ((match = imageImportRe.exec(code)) !== null) {
const [fullMatch, varName, importPath] = match;
const matchStart = match.index;
const matchEnd = matchStart + fullMatch.length;
// Resolve the absolute path of the image
const dir = path.dirname(id);
const absImagePath = path.resolve(dir, importPath);
if (!fs.existsSync(absImagePath)) continue;
// Replace the single import with two:
// 1. Original import (Vite gives us the URL string)
// 2. Meta import (we provide { width, height })
// Combined into a StaticImageData object
const urlVar = `__vinext_img_url_${varName}`;
const metaVar = `__vinext_img_meta_${varName}`;
const replacement =
`import ${urlVar} from ${JSON.stringify(importPath)};\n` +
`import ${metaVar} from ${JSON.stringify(absImagePath + "?vinext-meta")};\n` +
`const ${varName} = { src: ${urlVar}, width: ${metaVar}.width, height: ${metaVar}.height };`;
s.overwrite(matchStart, matchEnd, replacement);
hasChanges = true;
}
if (!hasChanges) return null;
return {
code: s.toString(),
map: s.generateMap({ hires: "boundary" }),
};
},
},
} as Plugin & { _dimCache: Map<string, { width: number; height: number }> },
// Google Fonts self-hosting:
// During production builds, fetches Google Fonts CSS + .woff2 files,
// caches them locally in .vinext/fonts/, and rewrites font constructor
// calls to pass _selfHostedCSS with @font-face rules pointing at local assets.
// In dev mode, this plugin is a no-op (CDN loading is used instead).
{
name: "vinext:google-fonts",
enforce: "pre",
_isBuild: false,
_fontCache: new Map<string, string>(), // url -> local @font-face CSS
_cacheDir: "",
configResolved(config) {
(this as any)._isBuild = config.command === "build";
(this as any)._cacheDir = path.join(config.root, ".vinext", "fonts");
},
transform: {
// Hook filter: only invoke JS when code contains 'next/font/google'.
// The _isBuild runtime check can't be expressed as a filter, but this
// still eliminates nearly all Rust-to-JS calls since very few files
// import from next/font/google.
filter: {
id: {
include: /\.(tsx?|jsx?|mjs)$/,
exclude: /node_modules/,
},
code: "next/font/google",
},
async handler(code, id) {
if (!(this as any)._isBuild) return null;
// Defensive guard — duplicates filter logic
if (id.includes("node_modules")) return null;
if (id.startsWith("\0")) return null;
if (!id.match(/\.(tsx?|jsx?|mjs)$/)) return null;
if (!code.includes("next/font/google")) return null;
// Match font constructor calls: Inter({ weight: ..., subsets: ... })
// We look for PascalCase or Name_Name identifiers followed by ({...})
// This regex captures the font name and the options object literal
const fontCallRe = /\b([A-Z][A-Za-z]*(?:_[A-Z][A-Za-z]*)*)\s*\(\s*(\{[^}]*\})\s*\)/g;
// Also need to verify these names came from next/font/google import
const importRe = /import\s*\{([^}]+)\}\s*from\s*['"]next\/font\/google['"]/;
const importMatch = code.match(importRe);
if (!importMatch) return null;
const importedNames = new Set(
importMatch[1].split(",").map((s) => s.trim()).filter(Boolean),
);
const s = new MagicString(code);
let hasChanges = false;
const cacheDir = (this as any)._cacheDir as string;
const fontCache = (this as any)._fontCache as Map<string, string>;
let match;
while ((match = fontCallRe.exec(code)) !== null) {
const [fullMatch, fontName, optionsStr] = match;
if (!importedNames.has(fontName)) continue;
// Convert PascalCase/Underscore to font family
const family = fontName.replace(/_/g, " ").replace(/([a-z])([A-Z])/g, "$1 $2");
// Parse options safely via AST — no eval/new Function
// eslint-disable-next-line @typescript-eslint/no-explicit-any
let options: Record<string, any> = {};
try {
const parsed = parseStaticObjectLiteral(optionsStr);
if (!parsed) continue; // Contains dynamic expressions, skip
options = parsed as Record<string, any>;
} catch {
continue; // Can't parse options statically, skip
}
// Build the Google Fonts CSS URL
const weights = options.weight
? Array.isArray(options.weight) ? options.weight : [options.weight]
: [];
const styles = options.style
? Array.isArray(options.style) ? options.style : [options.style]
: [];
const display = options.display ?? "swap";
let spec = family.replace(/\s+/g, "+");
if (weights.length > 0) {
const hasItalic = styles.includes("italic");
if (hasItalic) {
const pairs: string[] = [];
for (const w of weights) { pairs.push(`0,${w}`); pairs.push(`1,${w}`); }
spec += `:ital,wght@${pairs.join(";")}`;
} else {
spec += `:wght@${weights.join(";")}`;
}
} else if (styles.length === 0) {
// Request full variable weight range when no weight specified.
// Without this, Google Fonts returns only weight 400.
spec += `:wght@100..900`;
}
const params = new URLSearchParams();
params.set("family", spec);
params.set("display", display);
const cssUrl = `https://fonts.googleapis.com/css2?${params.toString()}`;
// Check cache
let localCSS = fontCache.get(cssUrl);
if (!localCSS) {
try {
localCSS = await fetchAndCacheFont(cssUrl, family, cacheDir);
fontCache.set(cssUrl, localCSS);
} catch {
// Fetch failed (offline?) — fall back to CDN mode
continue;
}
}
// Inject _selfHostedCSS into the options object
const matchStart = match.index;
const matchEnd = matchStart + fullMatch.length;
const escapedCSS = JSON.stringify(localCSS);
const closingBrace = optionsStr.lastIndexOf("}");
const optionsWithCSS = optionsStr.slice(0, closingBrace) +
(optionsStr.slice(0, closingBrace).trim().endsWith("{") ? "" : ", ") +
`_selfHostedCSS: ${escapedCSS}` +
optionsStr.slice(closingBrace);
const replacement = `${fontName}(${optionsWithCSS})`;
s.overwrite(matchStart, matchEnd, replacement);
hasChanges = true;
}
if (!hasChanges) return null;
return {
code: s.toString(),
map: s.generateMap({ hires: "boundary" }),
};
},
},
} as Plugin & { _isBuild: boolean; _fontCache: Map<string, string>; _cacheDir: string },
// Local font path resolution:
// When a source file calls localFont({ src: "./font.woff2" }) or
// localFont({ src: [{ path: "./font.woff2" }] }), the relative paths
// won't resolve in the browser because the CSS is injected at runtime.
// This plugin rewrites those path strings into Vite asset import
// references so that both dev (/@fs/...) and prod (/assets/font-xxx.woff2)
// URLs are correct.
{
name: "vinext:local-fonts",
enforce: "pre",
transform: {
filter: {
id: {
include: /\.(tsx?|jsx?|mjs)$/,
exclude: /node_modules/,
},
code: "next/font/local",
},
handler(code, id) {
// Defensive guards — duplicate filter logic
if (id.includes("node_modules")) return null;
if (id.startsWith("\0")) return null;
if (!id.match(/\.(tsx?|jsx?|mjs)$/)) return null;
if (!code.includes("next/font/local")) return null;
// Skip vinext's own font-local shim — it contains example paths
// in comments that would be incorrectly rewritten.
if (id.includes("font-local")) return null;
// Verify there's actually an import from next/font/local
const importRe = /import\s+\w+\s+from\s*['"]next\/font\/local['"]/;
if (!importRe.test(code)) return null;
const s = new MagicString(code);
let hasChanges = false;
let fontImportCounter = 0;
const imports: string[] = [];
// Match font file paths in `path: "..."` or `src: "..."` properties.
// Captures: (1) property+colon prefix, (2) quote char, (3) the path.
const fontPathRe = /((?:path|src)\s*:\s*)(['"])([^'"]+\.(?:woff2?|ttf|otf|eot))\2/g;
let match;
while ((match = fontPathRe.exec(code)) !== null) {
const [fullMatch, prefix, _quote, fontPath] = match;
const varName = `__vinext_local_font_${fontImportCounter++}`;
// Add an import for this font file — Vite resolves it as a static
// asset and returns the correct URL for both dev and prod.
imports.push(`import ${varName} from ${JSON.stringify(fontPath)};`);
// Replace: path: "./font.woff2" -> path: __vinext_local_font_0
const matchStart = match.index;
const matchEnd = matchStart + fullMatch.length;
s.overwrite(matchStart, matchEnd, `${prefix}${varName}`);
hasChanges = true;
}
if (!hasChanges) return null;
// Prepend the asset imports at the top of the file
s.prepend(imports.join("\n") + "\n");
return {
code: s.toString(),
map: s.generateMap({ hires: "boundary" }),
};
},
},
} as Plugin,
// "use cache" directive transform:
// Detects "use cache" at file-level or function-level and wraps the
// exports/functions with registerCachedFunction() from vinext/cache-runtime.
// Runs without enforce so it executes after JSX transform (parseAst needs plain JS).
{
name: "vinext:use-cache",
transform: {
// Hook filter: only invoke JS when code contains 'use cache'.
// The vast majority of files don't use this directive.
filter: {
id: {
include: /\.(tsx?|jsx?|mjs)$/,
exclude: /node_modules/,
},
code: "use cache",
},
async handler(code, id) {
// Defensive guard — duplicates filter logic
if (id.includes("node_modules")) return null;
if (id.startsWith("\0")) return null;
if (!id.match(/\.(tsx?|jsx?|mjs)$/)) return null;
if (!code.includes("use cache")) return null;
if (!resolvedRscTransformsPath) {
throw new Error(
"vinext: 'use cache' requires @vitejs/plugin-rsc to be installed.\n" +
"Run: npm install -D @vitejs/plugin-rsc",
);
}
const { transformWrapExport, transformHoistInlineDirective } = await import(pathToFileURL(resolvedRscTransformsPath).href);
const ast = parseAst(code);
// Check for file-level "use cache" directive
const cacheDirective = (ast.body as any[]).find(
(node: any) =>
node.type === "ExpressionStatement" &&
node.expression?.type === "Literal" &&
typeof node.expression.value === "string" &&
node.expression.value.startsWith("use cache"),
);
if (cacheDirective) {
// File-level "use cache" — wrap function exports with
// registerCachedFunction. Page default exports are wrapped directly
// (they're leaf components). Layout/template defaults are excluded
// because they receive {children} from the framework.
const directiveValue: string = cacheDirective.expression.value;
const variant = directiveValue === "use cache" ? "" : directiveValue.replace("use cache:", "").replace("use cache: ", "").trim();
// Only skip default export wrapping for layouts and templates —
// they receive {children} from the framework which requires
// temporary reference handling that registerCachedFunction doesn't
// support yet. Pages, not-found, loading, error, and default are
// leaf components with no {children} prop and can be cached directly.
const isLayoutOrTemplate = /\/(layout|template)\.(tsx?|jsx?|mjs)$/.test(id);
const runtimeModuleUrl = pathToFileURL(path.join(shimsDir, "cache-runtime.js")).href;
const result = transformWrapExport(code, ast as any, {
runtime: (value: any, name: any) =>
`(await import(${JSON.stringify(runtimeModuleUrl)})).registerCachedFunction(${value}, ${JSON.stringify(id + ":" + name)}, ${JSON.stringify(variant)})`,
rejectNonAsyncFunction: false,
filter: (name: any, meta: any) => {
// Skip non-functions (constants, types, etc.)
if (meta.isFunction === false) return false;
// Skip the default export on layout/template files — these
// receive {children} from the framework, and caching them
// requires temporary reference handling for the children slot.
// Named exports (e.g. generateMetadata) are still wrapped.
if (isLayoutOrTemplate && name === "default") return false;
return true;
},
});
if (result.exportNames.length > 0) {
// Remove the directive itself so it doesn't cause runtime errors
const output = result.output;
output.overwrite(cacheDirective.start, cacheDirective.end, `/* "use cache" — wrapped by vinext */`);
return {
code: output.toString(),
map: output.generateMap({ hires: "boundary" }),
};
}
// Even if no exports were wrapped, still strip the directive
// (e.g., layout/template file with only a default export)
const output = new MagicString(code);
output.overwrite(cacheDirective.start, cacheDirective.end, `/* "use cache" — handled by vinext */`);
return {
code: output.toString(),
map: output.generateMap({ hires: "boundary" }),
};
}
// Check for function-level "use cache" directives
// (e.g., async function getData() { "use cache"; ... })
const hasInlineCache = code.includes("use cache") && !cacheDirective;
if (hasInlineCache) {
const runtimeModuleUrl2 = pathToFileURL(path.join(shimsDir, "cache-runtime.js")).href;
try {
const result = transformHoistInlineDirective(code, ast as any, {
directive: /^use cache(:\s*\w+)?$/,
runtime: (value: any, name: any, meta: any) => {
const directiveMatch = meta.directiveMatch[0];
const variant = directiveMatch === "use cache" ? "" : directiveMatch.replace("use cache:", "").replace("use cache: ", "").trim();
return `(await import(${JSON.stringify(runtimeModuleUrl2)})).registerCachedFunction(${value}, ${JSON.stringify(id + ":" + name)}, ${JSON.stringify(variant)})`;
},
rejectNonAsyncFunction: false,
});
if (result.names.length > 0) {
return {
code: result.output.toString(),
map: result.output.generateMap({ hires: "boundary" }),
};
}
} catch {
// If hoisting fails (e.g., complex closure), fall through
}
}
return null;
},
},
},
// Copy @vercel/og assets (font, WASM) to the RSC output directory.
// @vercel/og uses readFileSync(new URL("./font.ttf", import.meta.url)) which
// breaks when the module is bundled because Vite doesn't process
// new URL(..., import.meta.url) for server-side (SSR/RSC) builds.
// This plugin copies the required assets so they exist alongside the bundle.
{
name: "vinext:og-assets",
apply: "build",
enforce: "post",
writeBundle: {
sequential: true,
order: "post",
async handler(options) {
const envName = (this as any).environment?.name as string | undefined;
if (envName !== "rsc") return;
const outDir = options.dir;
if (!outDir) return;
// Check if the bundle references @vercel/og assets
const indexPath = path.join(outDir, "index.js");
if (!fs.existsSync(indexPath)) return;
const content = fs.readFileSync(indexPath, "utf-8");
const ogAssets = [
"noto-sans-v27-latin-regular.ttf",
"resvg.wasm",
];
// Only copy if the bundle actually references these files
const referencedAssets = ogAssets.filter(asset => content.includes(asset));
if (referencedAssets.length === 0) return;
// Find @vercel/og in node_modules
try {
const require = createRequire(import.meta.url);
const ogPkgPath = require.resolve("@vercel/og/package.json");
const ogDistDir = path.join(path.dirname(ogPkgPath), "dist");
for (const asset of referencedAssets) {
const src = path.join(ogDistDir, asset);
const dest = path.join(outDir, asset);
if (fs.existsSync(src) && !fs.existsSync(dest)) {
fs.copyFileSync(src, dest);
}
}
} catch {
// @vercel/og not installed — nothing to copy
}
},
},
},
// Cloudflare Workers production build integration:
// After all environments are built, compute lazy chunks from the client
// build manifest and inject globals into the worker entry.
//
// Pages Router: injects __VINEXT_CLIENT_ENTRY__, __VINEXT_SSR_MANIFEST__,
// and __VINEXT_LAZY_CHUNKS__ into the worker entry (found via wrangler.json).
// App Router: the RSC plugin handles __VINEXT_CLIENT_ENTRY__ via
// loadBootstrapScriptContent(), but we still inject __VINEXT_LAZY_CHUNKS__
// and __VINEXT_SSR_MANIFEST__ into the worker entry at dist/server/index.js.
// Both: generates _headers file for immutable asset caching.
{
name: "vinext:cloudflare-build",
apply: "build",
enforce: "post",
closeBundle: {
sequential: true,
order: "post",
async handler() {
const envName = (this as any).environment?.name as string | undefined;
if (!envName || !hasCloudflarePlugin) return;
if (envName !== "client") return;
const envConfig = (this as any).environment?.config;
if (!envConfig) return;
const buildRoot = envConfig.root ?? process.cwd();
const distDir = path.resolve(buildRoot, "dist");
if (!fs.existsSync(distDir)) return;
const clientDir = path.resolve(buildRoot, "dist", "client");
// Read build manifest and compute lazy chunks (only reachable via
// dynamic imports). This runs for BOTH App Router and Pages Router.
// clientEntryFile is only used by the Pages Router path below —
// App Router gets its client entry via the RSC plugin instead.
let lazyChunksData: string[] | null = null;
let clientEntryFile: string | null = null;
const buildManifestPath = path.join(clientDir, ".vite", "manifest.json");
if (fs.existsSync(buildManifestPath)) {
try {
const buildManifest = JSON.parse(fs.readFileSync(buildManifestPath, "utf-8"));
for (const [, value] of Object.entries(buildManifest) as [string, any][]) {
if (value && value.isEntry && value.file) {
clientEntryFile = value.file;
break;
}
}
const lazy = computeLazyChunks(buildManifest);
if (lazy.length > 0) lazyChunksData = lazy;
} catch { /* ignore parse errors */ }
}
// Read SSR manifest for per-page CSS/JS injection
let ssrManifestData: Record<string, string[]> | null = null;
const ssrManifestPath = path.join(clientDir, ".vite", "ssr-manifest.json");
if (fs.existsSync(ssrManifestPath)) {
try {
ssrManifestData = JSON.parse(fs.readFileSync(ssrManifestPath, "utf-8"));
} catch { /* ignore parse errors */ }
}
if (hasAppDir) {
// App Router: the RSC plugin handles __VINEXT_CLIENT_ENTRY__
// via loadBootstrapScriptContent(), but we still need to inject
// __VINEXT_LAZY_CHUNKS__ and __VINEXT_SSR_MANIFEST__ into the
// worker entry at dist/server/index.js.
const workerEntry = path.resolve(distDir, "server", "index.js");
if (fs.existsSync(workerEntry) && (lazyChunksData || ssrManifestData)) {
let code = fs.readFileSync(workerEntry, "utf-8");
const globals: string[] = [];
if (ssrManifestData) {
globals.push(`globalThis.__VINEXT_SSR_MANIFEST__ = ${JSON.stringify(ssrManifestData)};`);
}
if (lazyChunksData) {
globals.push(`globalThis.__VINEXT_LAZY_CHUNKS__ = ${JSON.stringify(lazyChunksData)};`);
}
code = globals.join("\n") + "\n" + code;
fs.writeFileSync(workerEntry, code);
}
} else {
// Pages Router: find worker output by scanning dist/ for a
// directory containing wrangler.json (Cloudflare plugin default).
let workerOutDir: string | null = null;
for (const entry of fs.readdirSync(distDir)) {
const candidate = path.join(distDir, entry);
if (entry === "client") continue;
if (fs.statSync(candidate).isDirectory() &&
fs.existsSync(path.join(candidate, "wrangler.json"))) {
workerOutDir = candidate;
break;
}
}
if (!workerOutDir) return;
const workerEntry = path.join(workerOutDir, "index.js");
if (!fs.existsSync(workerEntry)) return;
// Fallback: scan dist/client/assets/ for the client entry chunk.
// Pages Router uses "vinext-client-entry", App Router uses
// "vinext-app-browser-entry".
if (!clientEntryFile) {
const assetsDir = path.join(clientDir, "assets");
if (fs.existsSync(assetsDir)) {
const files = fs.readdirSync(assetsDir);
const entry = files.find((f: string) =>
(f.includes("vinext-client-entry") || f.includes("vinext-app-browser-entry")) && f.endsWith(".js"));
if (entry) clientEntryFile = "assets/" + entry;
}
}
// Prepend globals to worker entry
if (clientEntryFile || ssrManifestData || lazyChunksData) {
let code = fs.readFileSync(workerEntry, "utf-8");
const globals: string[] = [];
if (clientEntryFile) {
globals.push(`globalThis.__VINEXT_CLIENT_ENTRY__ = ${JSON.stringify(clientEntryFile)};`);
}
if (ssrManifestData) {
globals.push(`globalThis.__VINEXT_SSR_MANIFEST__ = ${JSON.stringify(ssrManifestData)};`);
}
if (lazyChunksData) {
globals.push(`globalThis.__VINEXT_LAZY_CHUNKS__ = ${JSON.stringify(lazyChunksData)};`);
}
code = globals.join("\n") + "\n" + code;
fs.writeFileSync(workerEntry, code);
}
}
// Generate _headers file for Cloudflare Workers static asset caching.
// Vite outputs content-hashed files (JS, CSS, fonts) to the assetsDir
// (defaults to "assets"). These are safe to cache indefinitely since
// the hash changes on any content change. Without this, Cloudflare
// serves them with max-age=0 which forces unnecessary revalidation
// on every page load.
const headersPath = path.join(clientDir, "_headers");
if (!fs.existsSync(headersPath)) {
const assetsDir = envConfig.build?.assetsDir ?? "assets";
const headersContent = [
"# Cache content-hashed assets immutably (generated by vinext)",
`/${assetsDir}/*`,
" Cache-Control: public, max-age=31536000, immutable",
"",
].join("\n");
fs.writeFileSync(headersPath, headersContent);
}
},
},
},
];
// Append auto-injected RSC plugins if applicable
if (rscPluginPromise) {
plugins.push(rscPluginPromise);
}
return plugins as Plugin[];
}
/**
* Collect all NEXT_PUBLIC_* env vars and create Vite define entries
* so they get inlined into the client bundle.
*/
function getNextPublicEnvDefines(): Record<string, string> {
const defines: Record<string, string> = {};
for (const [key, value] of Object.entries(process.env)) {
if (key.startsWith("NEXT_PUBLIC_") && value !== undefined) {
defines[`process.env.${key}`] = JSON.stringify(value);
}
}
return defines;
}
/**
* If the current position in `str` starts with a parenthesized group, consume
* it and advance `re.lastIndex` past the closing `)`. Returns the group
* contents or null if no group is present.
*/
function extractConstraint(str: string, re: RegExp): string | null {
if (str[re.lastIndex] !== "(") return null;
const start = re.lastIndex + 1;
let depth = 1;
let i = start;
while (i < str.length && depth > 0) {
if (str[i] === "(") depth++;
else if (str[i] === ")") depth--;
i++;
}
if (depth !== 0) return null;
re.lastIndex = i;
return str.slice(start, i - 1);
}
/**
* Match a Next.js route pattern (e.g. "/blog/:slug", "/docs/:path*") against a pathname.
* Returns matched params or null.
*
* Supports:
* :param — matches a single path segment
* :param* — matches zero or more segments (catch-all)
* :param+ — matches one or more segments
* (regex) — inline regex patterns in the source
*/
export function matchConfigPattern(
pathname: string,
pattern: string,
): Record<string, string> | null {
// If the pattern contains regex groups like (\\d+) or (.*), use regex matching.
// Also enter this branch when a catch-all parameter (:param* or :param+) is
// followed by a literal suffix (e.g. "/:path*.md"). Without this, the suffix
// pattern falls through to the simple segment matcher which incorrectly treats
// the whole segment (":path*.md") as a named parameter and matches everything.
if (
pattern.includes("(") ||
pattern.includes("\\") ||
/:\w+[*+][^/]/.test(pattern)
) {
try {
// Extract named params and their constraints from the pattern.
// :param(constraint) -> use constraint as the regex group
// :param -> ([^/]+)
// :param* -> (.*)
// :param+ -> (.+)
const paramNames: string[] = [];
// Single-pass conversion with procedural suffix handling. The tokenizer
// matches only simple, non-overlapping tokens; quantifier/constraint
// suffixes after :param are consumed procedurally to avoid polynomial
// backtracking in the regex engine.
let regexStr = "";
const tokenRe = /:(\w+)|[.]|[^:.]+/g; // lgtm[js/redos] — alternatives are non-overlapping (`:` and `.` excluded from `[^:.]+`)
let tok: RegExpExecArray | null;
while ((tok = tokenRe.exec(pattern)) !== null) {
if (tok[1] !== undefined) {
const name = tok[1];
const rest = pattern.slice(tokenRe.lastIndex);
// Check for quantifier (* or +) with optional constraint
if (rest.startsWith("*") || rest.startsWith("+")) {
const quantifier = rest[0];
tokenRe.lastIndex += 1;
const constraint = extractConstraint(pattern, tokenRe);
paramNames.push(name);
if (constraint !== null) {
regexStr += `(${constraint})`;
} else {
regexStr += quantifier === "*" ? "(.*)" : "(.+)";
}
} else {
// Check for inline constraint without quantifier
const constraint = extractConstraint(pattern, tokenRe);
paramNames.push(name);
regexStr += constraint !== null ? `(${constraint})` : "([^/]+)";
}
} else if (tok[0] === ".") {
regexStr += "\\.";
} else {
regexStr += tok[0];
}
}
const re = safeRegExp("^" + regexStr + "$");
if (!re) return null;
const match = re.exec(pathname);
if (!match) return null;
const params: Record<string, string> = {};
for (let i = 0; i < paramNames.length; i++) {
params[paramNames[i]] = match[i + 1] ?? "";
}
return params;
} catch {
// Fall through to segment-based matching
}
}
// Check for catch-all patterns (:param* or :param+) without regex groups
const catchAllMatch = pattern.match(/:(\w+)(\*|\+)$/);
if (catchAllMatch) {
const prefix = pattern.slice(0, pattern.lastIndexOf(":"));
const paramName = catchAllMatch[1];
const isPlus = catchAllMatch[2] === "+";
if (!pathname.startsWith(prefix.replace(/\/$/, ""))) return null;
const rest = pathname.slice(prefix.replace(/\/$/, "").length);
// For :path+ we need at least one segment (non-empty after the prefix)
if (isPlus && (!rest || rest === "/")) return null;
// For :path* zero segments is fine
let restValue = rest.startsWith("/") ? rest.slice(1) : rest;
// NOTE: Do NOT decodeURIComponent here. The pathname is already decoded at
// the entry point. Decoding again would create a double-decode vector.
return { [paramName]: restValue };
}
// Simple segment-based matching for exact patterns and :param
const parts = pattern.split("/");
const pathParts = pathname.split("/");
if (parts.length !== pathParts.length) return null;
const params: Record<string, string> = {};
for (let i = 0; i < parts.length; i++) {
if (parts[i].startsWith(":")) {
params[parts[i].slice(1)] = pathParts[i];
} else if (parts[i] !== pathParts[i]) {
return null;
}
}
return params;
}
/**
* Sanitize a redirect/rewrite destination by collapsing leading slashes and
* backslashes to a single "/" for non-external URLs. Browsers interpret "\"
* as "/" in URL contexts, so "\/evil.com" becomes "//evil.com" (protocol-relative).
*/
function sanitizeDestinationLocal(dest: string): string {
if (dest.startsWith("http://") || dest.startsWith("https://")) return dest;
dest = dest.replace(/^[\\/]+/, "/");
return dest;
}
/**
* Apply redirect rules from next.config.js.
* Returns true if a redirect was applied.
*/
function applyRedirects(
pathname: string,
res: any,
redirects: NextRedirect[],
): boolean {
for (const redirect of redirects) {
const params = matchConfigPattern(pathname, redirect.source);
if (params) {
let dest = redirect.destination;
for (const [key, value] of Object.entries(params)) {
dest = dest.replace(`:${key}*`, value);
dest = dest.replace(`:${key}+`, value);
dest = dest.replace(`:${key}`, value);
}
// Sanitize to prevent open redirect via protocol-relative URLs
dest = sanitizeDestinationLocal(dest);
res.writeHead(redirect.permanent ? 308 : 307, { Location: dest });
res.end();
return true;
}
}
return false;
}
/**
* Proxy an external rewrite in the Node.js dev server context.
*
* Converts the Node.js IncomingMessage into a Web Request, calls
* proxyExternalRequest(), and pipes the response back to the Node.js
* ServerResponse.
*/
async function proxyExternalRewriteNode(
req: import("node:http").IncomingMessage,
res: import("node:http").ServerResponse,
externalUrl: string,
): Promise<void> {
try {
const proto = "http";
const host = req.headers.host || "localhost";
const origin = `${proto}://${host}`;
const method = req.method ?? "GET";
const hasBody = method !== "GET" && method !== "HEAD";
const init: RequestInit & { duplex?: string } = {
method,
headers: Object.fromEntries(
Object.entries(req.headers)
.filter(([, v]) => v !== undefined)
.map(([k, v]) => [k, Array.isArray(v) ? v.join(", ") : String(v)]),
),
};
if (hasBody) {
const { Readable } = await import("node:stream");
init.body = Readable.toWeb(req) as unknown as ReadableStream;
init.duplex = "half";
}
const webRequest = new Request(new URL(req.url ?? "/", origin), init);
const proxyResponse = await proxyExternalRequest(webRequest, externalUrl);
// Preserve multi-value headers (e.g. Set-Cookie) — Object.fromEntries()
// would collapse them into a single value.
const nodeHeaders: Record<string, string | string[]> = {};
proxyResponse.headers.forEach((value, key) => {
const existing = nodeHeaders[key];
if (existing !== undefined) {
nodeHeaders[key] = Array.isArray(existing)
? [...existing, value]
: [existing, value];
} else {
nodeHeaders[key] = value;
}
});
res.writeHead(proxyResponse.status, nodeHeaders);
if (proxyResponse.body) {
const { Readable: ReadableImport } = await import("node:stream");
const nodeStream = ReadableImport.fromWeb(proxyResponse.body as unknown as import("stream/web").ReadableStream);
nodeStream.pipe(res);
} else {
res.end();
}
} catch (e) {
console.error("[vinext] External rewrite proxy error:", e);
if (!res.headersSent) {
res.writeHead(502);
res.end("Bad Gateway");
}
}
}
/**
* Apply rewrite rules from next.config.js.
* Returns the rewritten URL or null if no rewrite matched.
*/
function applyRewrites(
pathname: string,
rewrites: NextRewrite[],
): string | null {
for (const rewrite of rewrites) {
const params = matchConfigPattern(pathname, rewrite.source);
if (params) {
let dest = rewrite.destination;
for (const [key, value] of Object.entries(params)) {
dest = dest.replace(`:${key}*`, value);
dest = dest.replace(`:${key}+`, value);
dest = dest.replace(`:${key}`, value);
}
// Sanitize to prevent open redirect via protocol-relative URLs
dest = sanitizeDestinationLocal(dest);
return dest;
}
}
return null;
}
/**
* Apply custom header rules from next.config.js.
*/
function applyHeaders(
pathname: string,
res: any,
headers: Array<{ source: string; headers: Array<{ key: string; value: string }> }>,
): void {
for (const rule of headers) {
const escaped = escapeHeaderSource(rule.source);
const sourceRegex = safeRegExp("^" + escaped + "$");
if (sourceRegex && sourceRegex.test(pathname)) {
for (const header of rule.headers) {
res.setHeader(header.key, header.value);
}
}
}
}
/**
* Find a file by name (without extension) in a directory.
* Checks .tsx, .ts, .jsx, .js extensions.
*/
function findFileWithExts(dir: string, name: string): string | null {
const extensions = [".tsx", ".ts", ".jsx", ".js"];
for (const ext of extensions) {
const filePath = path.join(dir, name + ext);
if (fs.existsSync(filePath)) return filePath;
}
return null;
}
/**
* Check if the project has .mdx files in app/ or pages/ directories.
*/
function hasMdxFiles(root: string, appDir: string | null, pagesDir: string | null): boolean {
const dirs = [appDir, pagesDir].filter(Boolean) as string[];
for (const dir of dirs) {
if (fs.existsSync(dir) && scanDirForMdx(dir)) return true;
}
return false;
}
function scanDirForMdx(dir: string): boolean {
try {
const entries = fs.readdirSync(dir, { withFileTypes: true });
for (const entry of entries) {
if (entry.name.startsWith(".") || entry.name === "node_modules") continue;
const full = path.join(dir, entry.name);
if (entry.isDirectory()) {
if (scanDirForMdx(full)) return true;
} else if (entry.isFile() && entry.name.endsWith(".mdx")) {
return true;
}
}
} catch {
// ignore unreadable dirs
}
return false;
}
// Public exports for static export
export { staticExportPages, staticExportApp } from "./build/static-export.js";
export type { StaticExportResult, StaticExportOptions, AppStaticExportOptions } from "./build/static-export.js";
// Exported for CLI and testing
export { clientManualChunks, clientOutputConfig, clientTreeshakeConfig, computeLazyChunks };
export { resolvePostcssStringPlugins as _resolvePostcssStringPlugins };
export { parseStaticObjectLiteral as _parseStaticObjectLiteral };