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@supercharge/collections
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async/await-ready
array methods for Node.js
Installation · Docs · Usage
Follow @marcuspoehls and @superchargejs for updates!
The @supercharge/collections
package provides a convenient wrapper to work with arrays.
npm i @supercharge/collections
Find all the details and available methods in the extensive Supercharge docs.
The package exports a function accepting an array as a parameter. From there, you can chain all collection methods.
A created collection (Collect([1, 2, 3])
) is synchronous by default. That means it behaves like JavaScript’s array methods.
In contrast to JavaScript’s array methods, collections have a lot more methods available making your code a lot simpler. Here are basic examples using a collection:
const User = require('../models/user')
const Collect = require('@supercharge/collections')
const users = await User.findAll()
const notSubscribedUsers = Collect(users)
.filter(user => {
return user.notSubscribedToNewsletter
})
.all()
// notSubscribedUsers = [ <list of not-yet-subscribed users> ]
Here’s another example outlining how to determine whether the array “has” an item:
// “has” in JS Arrays
const hasNotSubscribedUsers = !![].concat(users).find(user => {
return user.notSubscribedToNewsletter
})
// “has” in Collections
const hasNotSubscribedUsers = Collect(users).has(user => {
return user.notSubscribedToNewsletter
})
All available methods are outlined in the docs.
The package is async/await-ready and supports async callback functions. A collection becomes async (returns a promise) as soon as you provide an async callback method to methods like map
, filter
, find
, and so on. You then need to await
the collection pipeline:
const User = require('../models/user')
const Collect = require('@supercharge/collections')
const users = await User.findAll()
const subscribedUsers = await Collect(users)
.filter(user => {
return user.notSubscribedToNewsletter
})
.map(async user => { // <-- providing an async callback creates an async collection that you need to `await`
await user.subscribeToNewsletter()
return user
})
// subscribedUsers = [ <list of newly-subscribed users> ]
You can directly await async collections without ending the call chain with .all()
. You can still call .all()
though, it works as well.
Do you miss a collection function? We very much appreciate your contribution! Please send in a pull request 😊
git checkout -b my-feature
git commit -am 'Add some feature'
git push origin my-new-feature
MIT © Supercharge
superchargejs.com · GitHub @supercharge · Twitter @superchargejs
FAQs
async/await-ready array methods for JavaScript and Node.js
The npm package @supercharge/collections receives a total of 288 weekly downloads. As such, @supercharge/collections popularity was classified as not popular.
We found that @supercharge/collections demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 3 open source maintainers collaborating on the project.
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