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Discussion on: A New Coding Style for Switch Statements in JavaScript/TypeScript

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Replies for: I created a little module based on this conversation, and of course gave you a shout-out in the README :D It's at npmjs.com/package/conditional-re...

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avalander profile image
Avalander • • Edited

Wow, that went quick :D

You could also consider having the function conditionalReduce curried and pass the dictionary as the first argument, to make it easier to reuse.

const petReducer = conditionalReduce({
  dog: () => 'Dogs are great pets',
  cat: () => 'Cats are also great'
})

console.log(petReducer('dog')) // 'Dogs are great pets'
console.log(petReducer('cat')) // 'Cats are also great'
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nebrius profile image
Bryan Hughes •

Also a great idea. I added a new helper so that folks can do either. Thanks again, this makes things cleaner!

const { curry } = require('conditional-reduce');

const dogReducer = curry({
  dog: () => 'Dogs are great pets',
  cat: () => 'Cat\'s are also great'
});

console.log(dogReducer('dog')); // Prints "Dogs are great pets"
console.log(dogReducer('bird')); // Throws 'Invalid conditional value "bird"' exception

const { reduce } = require('conditional-reduce');

console.log(reduce('dog', {
  dog: () => 'Dogs are great pets',
  cat: () => 'Cat\'s are also great'
})); // Prints "Dogs are great pets"

console.log(reduce('bird', {
  dog: () => 'Dogs are great pets',
  cat: () => 'Cat\'s are also great'
})); // Throws 'Invalid conditional value "bird"' exception