Environment variable on the front end. | Bun | Page 1

cyan dome Mar 10, 2025, 1:58 AM

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Has anyone got an idea about how to show env vars in a bun fullstack app on the front end?

E.g I want to print my NODE_ENV or BUN_PUBLIC_NODE_ENV

I have a bunfig.toml with

I have tried to use

process.env*
Bun.env
import.meta.env

But i cant seem to expose this on the front end

An help would be appreicated

jolly gyro Mar 10, 2025, 7:56 AM

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strange that it's not working

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is env = inside [serve.static] in bunfig.toml?

unkempt vessel May 30, 2025, 8:27 AM

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jolly gyro is env = inside `[serve.static]` in bunfig.toml?

still not working, i got the error that says process is undefined (so is import)
bun v1.2.15 btw

jolly gyro May 30, 2025, 8:31 AM

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@unkempt vessel it works similar to find and replace (but with the ast). is the environment variable statically analyzable? like process.env.FOO and not process.env[myVariable]

unkempt vessel May 30, 2025, 8:40 AM

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Yeah, they are statically analyzable, like when i try to run this code:

const HOST = process.env.BUN_PUBLIC_HOST_URL;
const PORT = import.meta.env.BUN_PUBLIC_PORT;

I got process is not defined and hmr.importMeta.env is undefined

unkempt vessel May 30, 2025, 7:32 PM

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I filed an issue on Github

#Environment variable on the front end.