Curry use

reports.js

// to, from are awkward here. generateReport only needs them to send an email
const generateReport = (to, from, data) =>
	mungeData(data, (warnings, munged) =>
		renderReport(munged, (report) => emailReport(to, from, report)))

generateReport(“[email protected]”, “[email protected]”, {some: ‘data’})


// if emailReport was curried, we could pass in the emailer

const generateReport = (sendEmail, data) =>
	mungeData(data, (warnings, munged) =>
		renderReport(munged, sendEmail))

generateReport(emailReport(“[email protected]”, “[email protected]”), {some: ‘data’})

arguably, this is contrived as we could push the emailing out to the caller, but sometimes this is desirable.

That's some serious indentation.