@bifravst/from-env/dist/fromEnv.spec.js

Helper function which ensures that required environment variables are set.

import { fromEnv } from './fromEnv.js';
import { describe, it } from 'node:test';
import assert from 'node:assert/strict';
void describe('fromEnv()', () => {
    void it('should return environment variables if defined', () => {
        const env = { FOO: 'bar' };
        assert.deepEqual(fromEnv({ foo: 'FOO' })(env), { foo: 'bar' });
    });
    void it('should throw an error if the environment variable is not defined', () => {
        const env = {};
        assert.throws(() => fromEnv({ foo: 'FOO' })(env), /FOO is not defined in environment!/);
    });
});