serve-static.ts — astro Source File

Source Code

import fs from 'node:fs';
import type { IncomingMessage, ServerResponse } from 'node:http';
import path from 'node:path';
import url from 'node:url';
import { hasFileExtension, isInternalPath } from '@astrojs/internal-helpers/path';
import type { NodeApp } from 'astro/app/node';
import send from 'send';
import type { Options } from './types.js';

/**
 * Creates a Node.js http listener for static files and prerendered pages.
 * In standalone mode, the static handler is queried first for the static files.
 * If one matching the request path is not found, it relegates to the SSR handler.
 * Intended to be used only in the standalone mode.
 */
export function createStaticHandler(app: NodeApp, options: Options) {
	const client = resolveClientDir(options);
	/**
	 * @param ssr The SSR handler to be called if the static handler does not find a matching file.
	 */
	return (req: IncomingMessage, res: ServerResponse, ssr: () => unknown) => {
		if (req.url) {
			// There might be cases where the incoming URL has the #, which we want to remove.
			let fullUrl = req.url;
			if (req.url.includes('#')) {
				fullUrl = fullUrl.slice(0, req.url.indexOf('#'));
			}

			const [urlPath, urlQuery] = fullUrl.split('?');
			const filePath = path.join(client, app.removeBase(urlPath));

			let isDirectory = false;
			try {
				isDirectory = fs.lstatSync(filePath).isDirectory();
			} catch {}

			const { trailingSlash = 'ignore' } = options;

			const hasSlash = urlPath.endsWith('/');
			let pathname = urlPath;

			if (app.headersMap && app.headersMap.length > 0) {
				const routeData = app.match(req, true);
				if (routeData && routeData.prerender) {
					const matchedRoute = app.headersMap.find((header) => header.pathname.includes(pathname));
					if (matchedRoute) {
						for (const header of matchedRoute.headers) {
							res.setHeader(header.key, header.value);
						}
					}
				}
			}

			switch (trailingSlash) {
				case 'never': {
					if (isDirectory && urlPath !== '/' && hasSlash) {
						pathname = urlPath.slice(0, -1) + (urlQuery ? '?' + urlQuery : '');
						res.statusCode = 301;
						res.setHeader('Location', pathname);
						return res.end();
// ... (89 more lines)