update(puppeteer): product option support

- product option support as per 2.1
- version bump
- test updated

https://github.com/puppeteer/puppeteer/releases/tag/v2.1.0
puppeteer/puppeteer#5137

Thanks!

types/puppeteer/index.d.ts

@@ -1,4 +1,4 @@
-// Type definitions for puppeteer 2.0
+// Type definitions for puppeteer 2.1
 // Project: https://github.com/GoogleChrome/puppeteer#readme
 // Definitions by: Marvin Hagemeister <https://github.com/marvinhagemeister>
 //                 Christopher Deutsch <https://github.com/cdeutsch>
@@ -8,6 +8,7 @@
 //                 Jason Kaczmarsky <https://github.com/JasonKaz>
 //                 Dave Cardwell <https://github.com/davecardwell>
 //                 Andrés Ortiz <https://github.com/angrykoala>
+//                 Piotr Błażejewicz <https://github.com/peterblazejewicz>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 // TypeScript Version: 3.0
 
@@ -2029,6 +2030,12 @@ export interface Target {
 }
 
 export interface LaunchOptions extends ChromeArgOptions, BrowserOptions, Timeoutable {
+  /**
+   * Which browser to launch.
+   * At this time, this is either `chrome` or `firefox`. See also `PUPPETEER_PRODUCT`.
+   * @default 'chrome'
+   */
+  product?: 'chrome' | 'firefox';
   /**
    * Path to a Chromium executable to run instead of bundled Chromium. If
    * executablePath is a relative path, then it is resolved relative to current
@@ -2213,6 +2220,7 @@ export interface BrowserFetcher {
   download(revision: string, progressCallback?: (downloadBytes: number, totalBytes: number) => void): Promise<RevisionInfo>;
   localRevisions(): Promise<string[]>;
   platform(): Platform;
+  product(): 'chrome' | 'firefox';
   remove(revision: string): Promise<void>;
   revisionInfo(revision: string): RevisionInfo;
 }
@@ -2228,6 +2236,7 @@ export interface RevisionInfo {
   url: string;
   /** whether the revision is locally available on disk */
   local: boolean;
+  product: 'chrome' | 'firefox';
 }
 
 export interface FetcherOptions {
@@ -2237,6 +2246,10 @@ export interface FetcherOptions {
   path?: string;
   /** Possible values are: `mac`, `win32`, `win64`, `linux`. Defaults to the current platform. */
   platform?: Platform;
+  /**
+   * @default 'chrome'
+   */
+  product?: 'chrome' | 'firefox';
 }
 
 /** Attaches Puppeteer to an existing Chromium instance */

types/puppeteer/puppeteer-tests.ts

@@ -213,6 +213,22 @@ puppeteer.launch().then(async browser => {
   browser.close();
 })();
 
+// `product` support
+(async () => {
+    await puppeteer.launch({
+        product: 'chrome',
+    });
+    await puppeteer.launch({
+        product: 'firefox',
+    });
+    const options: puppeteer.FetcherOptions = {
+        product: 'firefox',
+      };
+      const browserFetcher = puppeteer.createBrowserFetcher(options);
+      browserFetcher.product(); // $ExpectType "chrome" | "firefox"
+      browserFetcher.revisionInfo('revision').product; // $ExpectType "chrome" | "firefox"
+})();
+
 // Launching with default viewport disabled
 (async () => {
   await puppeteer.launch({