Kotlin JS React accessing/configuring environment variables

I’m curious how I would use .env, .env.local, etc. in my Kotlin React application. I am using gradle, and essentially I want to be able to use different values depending upon my environment. Typically I would just create my .env and access process.env.VAR_NAME and I’m good. So, I thought I would try using something like “external val process: dynamic” and then accessing my variables like so. However, it doesn’t seem to work, possibly because the .env doesn’t get picked up? Anyone solve this?

Thanks for any feedback advice. Also, on a curious note, how would one suggest using ‘create-react-kotlin-app’ in an automated build process? That’s the main reason I choose gradle. I am open to ideas and suggestions.

Thank you!

1 Like


I am using following code for my env values:

external val process: Process

external interface Process {
val env: dynamic

And then execute


I’ve tried to use your approach, but cannot access the values in .env. Do I need to setup anything else? Could you give some more background, please?


@chrisbln Could you please give some infos how to read the variables from .env. I’ve tried to follow your steps, but cannot access the configuration.


How would you expect this to work? When the JavaScript is being executed in a browser there are no environment variables like there would be in a NodeJS or JVM process. You’d need to find a way to make the values accessible in variables in the browser.

I’m doing this using Webpack’s DefinePlugin and different configuration files which are loaded in the Webpack configuration depending on whether the build is in development or production mode. Not exactly elegant but does the job.