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

pointless

v0.0.0

Published

Point-free programming in JavaScript

Downloads

1

Readme

Pointless.js

Pointless is a library for working with values, arrays, objects, functions, and promises with a uniform interface and in a point-free style.

It does not provide any facilities for working with the DOM, but can be extended to do so via plugins.

Pointless is inspired by:

  • jQuery
  • Underscore
  • @raganwald
  • @domenic

API

P is the main function. It returns a Pointless object.

Pointless objects wrap values. The original value is accessible via the ._ property.

equal( P(42)._, 42 );

Pointless objects provide many methods for manipulating their values.

All methods available on Pointless objects are also available as "static" methods on the P function. These methods take in an unwrapped value as their first argument and return an unwrapped value. They are meant for quick application of a single Pointless method. To apply more than one Pointless method to a value, consider chaining off a Pointless object instead.

map

deepEqual( P([ 1, 2 ]).map(add1)._, [ 2, 3 ] );

function add1(val) { return val + 1; }

reduce

equal( P([ 1, 2 ]).reduce(add)._, 3 );

function add(a, b) { return a + b; }

each

deepEqual( P([ 1, 2 ]).each(add1)._, [ 1, 2 ] );

function add1(val) { return val + 1; }

ifFirst, ifNotFirst

fs.exists('file.txt', P.maybeIfFirst(
    P.partial(
        fs.readFile, 'file.txt', 'utf-8',
        P.maybeIfNotFirst(console.log, console.error)
    )
));

P(fs.exists).callBackLast()
.call('file.txt')
.eventually()
.ifFirst(function() {
    P(fs.readFile).nodeBackLast()
    .call('file.txt')
    .eventually()
    .ifNotFirst(console.log, console.error);
});

P('file.txt')
.save()
.applyToFirst(P(fs.exists).callBackLast()._)
.eventually()
.ifFirst()
.restore()
.applyToFirst(P.nodeBackLast(fs.readFile), 'utf-8')
.ifNotFirst(console.log, console.error);

then

Pointless objects have a .then() method:

P(42).then(function(val) { equal( val, 42 ); });

.then() returns a Pointless object wrapping the return value of its callback:

equal( P(42).then(add1)._, 43 );

function add1(val) { return val + 1; }

This method is supposed to resemble the .then() method from Promises/A.

Promises

Pointless objects work well with promises. Invoke .eventually() to get a Pointless object with a .then() method that is Promises/A compliant.

All of the usual Pointless methods are still available but they all implicitly call .then() so that they can be applied to the resolved values.

Code to map the results of a promise for an array that looks like this:

getPromiseForArray().then(function(arr) {
    return arr.map(processResult);
})

can become this:

P(getPromiseForArray())
.eventually()
.map(processResult)

The value of that Pointless object will be a promise. To use the fulfilled value of that promise, pass a callback function to .then() just like you would do with the result of the previous example:

P(getPromiseForArray())
.eventually()
.map(processResult)
.then(function(values) {
    // values and everything in it has been fulfilled.
});

Pointless relies on Q for its promise implementation. If you need support for promises, be sure to include Q. If you never call .eventually(), you don't need to bother including Q.