yt-dlp support

node_modules/whatsapp-web.js/src/util/Puppeteer.js

@@ -0,0 +1,23 @@
+/**
+ * Expose a function to the page if it does not exist
+ *
+ * NOTE:
+ * Rewrite it to 'upsertFunction' after updating Puppeteer to 20.6 or higher
+ * using page.removeExposedFunction
+ * https://pptr.dev/api/puppeteer.page.removeexposedfunction
+ *
+ * @param {object} page - Puppeteer Page instance
+ * @param {string} name
+ * @param {Function} fn
+ */
+async function exposeFunctionIfAbsent(page, name, fn) {
+    const exist = await page.evaluate((name) => {
+        return !!window[name];
+    }, name);
+    if (exist) {
+        return;
+    }
+    await page.exposeFunction(name, fn);
+}
+
+module.exports = {exposeFunctionIfAbsent};