Read environment variables with Bun

The current environment variables can be accessed via process.env.

process.env.API_TOKEN; // => "secret"

Bun also exposes these variables via Bun.env, which is a simple alias of process.env.

Bun.env.API_TOKEN; // => "secret"

To print all currently-set environment variables to the command line, run bun --print process.env. This is useful for debugging.

bun --print process.env

txt

BAZ=stuff
FOOBAR=aaaaaa
<lots more lines>

See Docs > Runtime > Environment variables for more information on using environment variables with Bun.