feat: trailing slash option for connect middleware

package.json

@@ -1,6 +1,6 @@
 {
   "name": "og-images-generator",
-  "version": "0.0.9",
+  "version": "0.1.0",
   "description": "Generate OG images from a static folder and / or a middleware.\nExtract metadata from HTML pages. No headless browser involved.\nComes as a CLI, API or plugins.",
   "keywords": [
     "og-images",

src/collect.js

@@ -133,9 +133,14 @@ export const DEFAULT_OG_PATH_PREFIX = '/og/';
  * @param {string} [pathPrefix]
  * @returns {string}
  */
-export function ogPathToPagePath(url, pathPrefix = DEFAULT_OG_PATH_PREFIX) {
+export function ogPathToPagePath(
+	url,
+	pathPrefix = DEFAULT_OG_PATH_PREFIX,
+	trailingSlash = true,
+) {
+	const suffix = trailingSlash ? '/' : '';
 	return url
 		.replace(pathPrefix ?? '', '')
-		.replace(/^index.png$/, '')
-		.replace(/\.png$/, '');
+		.replace(/^index.png$/, suffix)
+		.replace(/\.png$/, suffix);
 }

src/plugins/connect-middleware.js

@@ -10,6 +10,7 @@ import {
  * @typedef {() => Promise<import('../generate.js').UserConfig>} ConfigReloader
  * @param {object} [options]
  * @param {string} [options.pathPrefix] - Default: `/og/`
+ * @param {boolean} [options.trailingSlash] - Default: `true`
  * @param {ConfigReloader} [options.configReloader]
  * @returns {Promise<import('connect').NextHandleFunction>}
  */
@@ -26,7 +27,11 @@ export async function connectOgImagesGenerator(options) {
 		if (req.url.startsWith(prefix) === false) return next();
 
 		const base = 'http://' + req.rawHeaders[req.rawHeaders.indexOf('Host') + 1];
-		const path = ogPathToPagePath(req.url);
+		const path = ogPathToPagePath(
+			req.url,
+			options?.pathPrefix,
+			options?.trailingSlash,
+		);
 
 		const pageUrl = new URL(path, base).href;