I'm having a hard time exporting the Truffle sample app on Heroku. I'd like to use it with Metamask. I tried simply pushing the code from my local machine (where the code is working) adding the following Procfile:

web: npm run dev

But to no avail, it's not working on Heroku. Any advices? Thanks

1 Answer 1


I finally managed to deploy it specifying devServer in webpack.config.js:

devServer: {
    port: process.env.PORT || 8080,
    host: '',
    disableHostCheck: true

As a side note, I had to downgrade npm from 5.3.0 to 5.2.x due to this issue: https://github.com/npm/npm/issues/17858

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