vue.config.js

const webpack = require('webpack')
const fs = require('fs')
const packageJson = fs.readFileSync('./package.json')
const version = JSON.parse(packageJson).version || 0
module.exports = {
    configureWebpack: {
        plugins: [
            new webpack.DefinePlugin({
                'process.env': {
                    PACKAGE_VERSION: '"' + version + '"'
                }
            })
        ]
    },
// the rest of your original module.exports code goes here
}