If you’ve written your Node.js app in coffeescript entirely and at the time of deploying on Heroku wondering how heroku would execute your coffee code, then here’s the simple process that you need to follow.
Add the coffee-script npm package into your package.json or just install it with the --save flag that’ll auto-add anyway.
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$ npm install --save coffee-script
Then, instead of using the node command in your Procfile use this –
web: coffee server.coffee
I’m assuming that the server.coffee is your node app script that needs to be executed to start your web app. Hope this quick tip helps some!
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Thanks for the post. What I have been wondering about is that if we add this layer of coffeescript at runtime, what type of performance penalty would we be looking at? Or, is that something we even need to be concerned about? I wasn’t able to find much on the subject.
I’m not sure but some sort of caching must be involved. Unless you’re actually hitting performance issues should probably not sweat it.