npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

promised-loops

v1.1.1

Published

forItem, forKey, forEach, mapItem, mapKey, mapEach async loop wrappers

Downloads

76

Readme

promised-loops

Non blocking asyncronous loops that work with objects or arrays

npm i promised-loops

For

promised mimic of '.forEach(callback)'

await forEach( iterable, async callback( item, index ) )

const { forEach } = require('promised-loops')

const array = [ 1, 2, 3, 4, 5 ]
await forEach( array, async ( item, index ) => {
    //Pause for async promise example 
    await new Promise(end => setTimeout(end, 1000))
    console.log(`item : ${item} @ index : ${index}`)
})
//=> item : 1 @ index : 0
//=> item : 2 @ index : 1
//=> item : 3 @ index : 2
//=> item : 4 @ index : 3
//=> item : 5 @ index : 4

const object = { one:1, two:2, three:3, four:4, five:5 }
await forEach( object, async ( item, index ) => {
    //Pause for async promise example 
    await new Promise(end => setTimeout(end, 1000))
    console.log(`item : ${item} @ key : ${index}`)
})
//=> item : 1 @ key : one
//=> item : 2 @ key : two
//=> item : 3 @ key : three
//=> item : 4 @ key : four
//=> item : 5 @ key : five

Map

promised mimic of '.map(callback)'

await mapEach( iterable, async callback( item, index ) )

const { mapEach } = require('promised-loops')
var result = null

const array = [ 1, 2, 3, 4, 5 ]
result = await mapEach( array, async ( item, index ) => {
    return item + index
})
console.log( result )
//=> [ 1, 3, 5, 7, 9 ]

const object = { one:1, two:2, three:3, four:4, five:5 }
result = await mapEach( object, async ( item, index ) => {
    return item + index
})
console.log( result )
//=> [ '1one', '2two', '3three', '4four', '5five' ]

Reduce

promised mimic of '.reduce(callback, initializer)'

await reduceEach( iterable, async callback( accumulator, item, index ), initializer )

const { reduceEach } = require('promised-loops')
var result = null

const array = [ 1, 2, 3, 4, 5 ]
result = await reduceEach( array, async ( accumulator, item, index ) => {
    accumulator[item] = key
    return accumulator
}, {})
console.log( result )
//=> { '1':0, '2':1, '3':2, '4':3, '5':4 }

const object = { one:1, two:2, three:3, four:4, five:5 }
result = await reduceEach( object, async ( accumulator, item, index ) => {
    accumulator[item] = key
    return accumulator
}, {})
console.log( result )
//=> { '1':'one', '2':'two', '3':'three', '4':'four', '5':'five' }

Sum

promised mimic of '.sum()'

await sumEach( iterable [,field] )

const { sumEach } = require('promised-loops')
var result = null

const array = [ 1, 2, 3, 4, 5 ]
result = await sumEach( array )
console.log( result )
//=> 15

const object = { one:1, two:2, three:3, four:4, five:5 }
result = await sumEach( object )
console.log( result )
//=> 15

const complex = [{v:10},{v:20},{v:30},{v:40},{v:50}]
result = await sumEach( complex, 'v' )
console.log( result )
//=> 150