feat: user agent stealth

src/browser.ts

@@ -91,8 +91,12 @@ export class Browser {
     this.pages.push(page);
 
     const celestial = page.unsafelyGetCelestialBindings();
+    const { userAgent } = await celestial.Browser.getVersion();
 
     await Promise.all([
+      celestial.Emulation.setUserAgentOverride({
+        userAgent: userAgent.replaceAll("Headless", ""),
+      }),
       celestial.Page.enable(),
       celestial.Page.setInterceptFileChooserDialog({ enabled: true }),
     ]);

tests/evaluate_test.ts

@@ -1,4 +1,5 @@
 import { assertEquals } from "https://deno.land/[email protected]/assert/assert_equals.ts";
+
 import { launch } from "../mod.ts";
 
 Deno.test("Testing evaluate", async () => {

tests/stealth_test.ts

@@ -0,0 +1,22 @@
+import { assert } from "https://deno.land/[email protected]/assert/assert.ts";
+
+import { launch } from "../mod.ts";
+
+/// <reference lib="dom" />
+
+Deno.test("Testing stealth", async () => {
+  // Launch browser
+  const browser = await launch();
+
+  // Open the webpage
+  const page = await browser.newPage("http://example.com");
+
+  // passing arguments to evaluate
+  const userAgent: string = await page.evaluate(() => {
+    return navigator.userAgent;
+  });
+  assert(userAgent.toLowerCase().includes("headless"));
+
+  // Close browser
+  await browser.close();
+});

tests/wait_test.ts

@@ -1,4 +1,5 @@
 import { assertSnapshot } from "https://deno.land/[email protected]/testing/snapshot.ts";
+
 import { launch } from "../mod.ts";
 
 Deno.test("Wait for selector", async () => {