Snowpack plugin-dotenv with path option

plugin-dotenv.js

const fs = require('fs');
const path = require('path');

module.exports = function plugin(_, {path:envPath}) {
  const NODE_ENV = process.env.NODE_ENV;

  // https://github.com/bkeepers/dotenv#what-other-env-files-can-i-use
  const dotenvFiles = [
    NODE_ENV && `.env.${NODE_ENV}.local`,
    // Don't include `.env.local` for `test` environment
    // since normally you expect tests to produce the same
    // results for everyone
    NODE_ENV !== 'test' && `.env.local`,
    NODE_ENV && `.env.${NODE_ENV}`,
    '.env',
  ].filter(Boolean);
  // Load environment variables from .env* files. Suppress warnings using silent
  // if this file is missing. dotenv will never modify any environment variables
  // that have already been set.  Variable expansion is supported in .env files.
  // https://github.com/motdotla/dotenv
  // https://github.com/motdotla/dotenv-expand
  dotenvFiles.forEach((dotenvFile) => {
    const envFile = envPath ? path.join(envPath, dotenvFile) : dotenvFile
    if (fs.existsSync(envFile)) {
      require('dotenv-expand')(
        require('dotenv').config({
          path: envFile,
        }),
      );
    }
  });

  return {
    name: 'plugin-dotenv',
  };
};

snowpack.config.js

/** @type {import("snowpack").SnowpackUserConfig } */
module.exports = {
    mount: {
        // directory name: 'build directory'
        public: '/',
        src: '/dist',
    },
    plugins: [
         ["./plugins/plugin-dotenv", {path: "../"}]
    ]
};