nextjs-using-staging-deploy

copyEnvFile.js

/**
 * Generate a `.env.production` file depending on the value from TARGET_ENV environment variable
 * created with ❤️ by Tona González (@martiuh)
 */
const fs = require('fs');

/**
 * @description copies the given `.env.base.${TARGET_ENV}` file to a `.env.production` file.
 */

const env = {
  production: 'production',
  staging: 'staging',
};

function copyEnvFile() {
  const target = env[process.env.TARGET_ENV] || env.staging;
  const dotenvPath = process.cwd() + `/.env.base.${target}`;
  const fileStats = fs.statSync(dotenvPath);

  if (!fileStats.isFile()) {
    console.error(`[copyEnvFile] ${dotenvPath} is not a valid file`);
  }

  const prodDotEnv = '.env.production';
  try {
    fs.copyFileSync(dotenvPath, `${process.cwd()}/${prodDotEnv}`);
    console.log(`${prodDotEnv} successfully copied with TARGET_ENV=${target}`);
  } catch (error) {
    console.error(
      `[copyEnvFile] there was an error copying ${prodDotEnv} file`
    );
    console.error(error);
  }
  return;
}

copyEnvFile();