Deploying Laravel Mix to Heroku!!

I successfully deployed Laravel to Heroku. Added buildpacks in this order.

=== app Buildpack URLs

1. heroku/nodejs
2. heroku/php And also in package.json, I provided scripts to build asssets in production.

"postinstall": "npm run production" Everything works except one thing. Versioning. In webpack I have version(), and it works fine when I fire npm run production on my local machine. But in heroku, versioning does not working. I pasted output from heroku.

remote: > @ production /tmp/build_8c7781f6ff90b919667b337b3006842e remote: > node node_modules/cross-env/bin/cross-env.js NODE_ENV=production node_modules/webpack/bin/webpack.js --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js remote: remote: 95% emitting DONE Compiled successfully in 30218ms remote: re Asset Size Chunks Chunk Names remote: /js/app.js 294 kB 0 [emitted] [big] /js/app remote: /css/app.css 135 kB 0 [emitted] /js/app remote: mix-manifest.json 66 bytes [emitted] remote: Done in 66.33s. Scripts minimized and merged, but there's no versioning. Any idea to fix it?

In case you ask it, this is environment on heroku for nodejs: I use node ^7.x, npm ^4.x

remote: NPM_CONFIG_LOGLEVEL=error remote: NPM_CONFIG_PRODUCTION=false remote: NODE_VERBOSE=false remote: NODE_ENV=production remote: NODE_MODULES_CACHE=false https://tweakbox.mobi/ https://getappvalley.com/ https://vlc.onl