• Blog
  • Docs
  • Pricing
  • We’re hiring!
Log inSign up
onkernel

onkernel

kernel_starter

Crazy-fast hosted browser infra
Public
Like
kernel_starter
Home
Code
2
README.md
main.ts
Branches
1
Pull requests
Remixes
4
History
Environment variables
2
Val Town is a collaborative website to build and scale JavaScript apps.
Deploy APIs, crons, & store data – all from the browser, and deployed in milliseconds.
Sign up now
Code
/
README.md
Code
/
README.md
Search
9/11/2025
Viewing readonly version of main branch: v1
View latest version
README.md

Playwright on Val Town

Playwright on Val Town has a few challenges:

  • You can't run a browser on Val Town, since Val Town can only run Deno Typescript code
  • Playwright requires file system access to work (it makes an artifacts temp dir)

To get around the file system issue, we can stub node:fs using this small script.

This example is directly from their homepage, with no modification other than adding import "https://esm.town/v/wolf/StubFS/stubFs.ts".

You can set "TMPDIR" to "/tmp" in your environmental variables if you wish not to get warnings about it being unset.

FeaturesVersion controlCode intelligenceCLIMCP
Use cases
TeamsAI agentsSlackGTM
DocsShowcaseTemplatesNewestTrendingAPI examplesNPM packages
PricingNewsletterBlogAboutCareers
We’re hiring!
Brandhi@val.townStatus
X (Twitter)
Discord community
GitHub discussions
YouTube channel
Bluesky
Open Source Pledge
Terms of usePrivacy policyAbuse contact
© 2025 Val Town, Inc.