How to load .env file into the test environment?

[datsenkoboos]

I want to use variables from .env.public file in my test environment, so i've added setupFiles: '.env.public' to vitest.config.ts:

.env.public and vite.config.ts are both in the root of my project:

Tests are failing with error:

ctrl + click on the url from the error successfully opens .env.public file

How can i fix the issue?

[keymatch-clovis]

If anyone still stumbles into this problem, I have done the following:

I'm using the loadEnvFile function from Node.js. Keep in mind this was added for versions v21.7.0, v20.12.0. If you have an older version, or don't want to use this as it's still under active development, you could use a library like dotenv, if I understand correctly.

I'm using the Vitest configuration setupFiles property, something like:

import swc from "unplugin-swc";
import { defineConfig } from "vitest/config";

export default defineConfig({
    // ...
    test: {
        // ...
        setupFiles: ["./test/setup.ts"],
    },
    // ...
});

And in the ./test/setup.ts file, I add:

import { loadEnvFile } from "node:process";

// We need to load the local .env file to access some variables needed when
// testing.
loadEnvFile();

I understand you could set the path argument for the loadEnvFile to use other file, and not the default './.env' file.