如何避免重新定义VERSION,PACKAGE等

export const VERSION = '1.0.0';
export const PACKAGE = 'com.example.myapp';

import { VERSION, PACKAGE } from './constants.js';

console.log(`Version: ${VERSION}`);
console.log(`Package: ${PACKAGE}`);

VERSION=1.0.0
PACKAGE=com.example.myapp

import dotenv from 'dotenv';
dotenv.config();

console.log(`Version: ${process.env.VERSION}`);
console.log(`Package: ${process.env.PACKAGE}`);

const webpack = require('webpack');

module.exports = {
  // ...
  plugins: [
    new webpack.DefinePlugin({
      VERSION: JSON.stringify('1.0.0'),
      PACKAGE: JSON.stringify('com.example.myapp'),
    }),
  ],
};

console.log(`Version: ${VERSION}`);
console.log(`Package: ${PACKAGE}`);