Previewfor Atom which supports CoffeeScript and many, many more!
Previewpackage. Please report new issues there.
Atom Package: https://atom.io/packages/coffeescript-preview
apm install coffeescript-preview
Or Settings/Preferences ➔ Packages ➔ Search for
Refresh Debounce Period(milliseconds) - Set the debounce rate for preview refreshing. For instance, if you type or switch tabs, how long of a pause before the preview refreshes.
Update On Tab Change(boolean) - Should the preview update to the currently active tab?
Good catch. Let us know what about this package looks wrong to you, and we'll investigate right away.