Runtime

Val Town code runs on the Deno runtime.

• TypeScript and TSX are available for all vals, and at the time of this writing we support TypeScript 5.9.2.
• There is no filesystem access permitted - but you can store file-like objects using Blob storage.
• --allow-net is enabled, so they can make HTTP requests.
• Vals have access to environment variables.
• The experimental Temporal API is enabled.

Included environment#

• fetch to make HTTP requests

• import from npm and https

• Custom Types — View the custom types we support

Versions#

We run the same version of Deno, V8, and TypeScript for all vals.

At the time of this writing (likely out of date), we run:

• Deno 2.9.6

• V8 14.0.365.5-rusty

• TypeScript 5.9.2

• Versions — View up-to-date versions of Deno, v8, and TypeScript we run

Outbound IP addresses#

Vals will access other resources from the following outbound IP addresses: you can use these if you need to whitelist IP addresses for a service like a database.

74.220.50.0/24
74.220.58.0/24