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Version: 18.0.3

BrowserFetcher class

BrowserFetcher can download and manage different versions of Chromium and Firefox.

Signature:

export declare class BrowserFetcher

Remarks​

BrowserFetcher operates on revision strings that specify a precise version of Chromium, e.g. "533271". Revision strings can be obtained from omahaproxy.appspot.com. In the Firefox case, BrowserFetcher downloads Firefox Nightly and operates on version numbers such as "75".

The constructor for this class is marked as internal. Third-party code should not call the constructor directly or create subclasses that extend the BrowserFetcher class.

Example​

An example of using BrowserFetcher to download a specific version of Chromium and running Puppeteer against it:

const browserFetcher = puppeteer.createBrowserFetcher();
const revisionInfo = await browserFetcher.download('533271');
const browser = await puppeteer.launch({
  executablePath: revisionInfo.executablePath,
});

NOTE BrowserFetcher is not designed to work concurrently with other instances of BrowserFetcher that share the same downloads directory.

Methods​

MethodModifiersDescription
canDownload(revision)Initiates a HEAD request to check if the revision is available.
download(revision, progressCallback)Initiates a GET request to download the revision from the host.
host()
localRevisions()
platform()
product()
remove(revision)
revisionInfo(revision)