env node module. Typescript implementation

.env

MY_ENV_VAR=some-value

env.ts

import * as fs from 'fs';
import * as path from 'path';

// depends on your current execution path. If you script are on same path of .env file, this works.
const envFilePath = path.resolve() + '.env';

export function config() {
  if (fs.existsSync(envFilePath)) {
    const fileContent = fs.readFileSync(envFilePath, 'utf8');
    const arrEnv = fileContent.split('\n');
    const parsed = arrEnv.map((envVar) => envVar.split('='))
    for (const env of parsed) {
      process.env[env[0]] = env[1];
    }
  }
}