My collection of modules for 2014

[Floby]

Hello everyone,

I have been writing and publishing tools and modules this year without advertising much any of them. Most of them are related in some way to what I do at work and all of them have been published as to be as general purpose as possible.

Since publishing is always funnier with real life feedback, I decided to make a list of the stuff I've been working on.

Here is a list of things I've published and might be useful to you :

stream-stream

> A stream of streams in order to concatenate the contents of several streams

var ss = require('stream-stream');
var fs = require('fs');

var files = ['a.txt', 'b.txt', 'c.txt'];
var stream = ss();

files.forEach(function(f) {
    stream.write(fs.createReadStream(f));
});
stream.end();

stream.pipe(process.stdout);

stream-write-read

> Write to a file, read when it's done

var WriteRead = require('stream-write-read');

var cache = WriteRead('/my/cache/folder/file');
cache.createReadable().pipe(destination);

source.pipe(cache);

stream-sink

> Collect all data piped to this stream when it ends

Useful for testing purposes

var sink = require('stream-sink');
readable.pipe(sink()).on('data', function(data) {
    // YAY!
});

stream-blackhole

> A silly writable stream eating all data

Useful when you need to consume a readable stream but don't care about its data

var blackhole = require('stream-blackhole');
process.stdin.pipe(blackhole());

duplex-maker

> Create a duplex stream from a writable and a readable

var writable = fs.createWriteStream('/to/write');
var readable = fs.createReadStream('/to/read');

var duplex = DuplexMaker(writable, readable);

ka-ching

> Caching framework for streams

ka-ching is one of these larger projects that all of the others come from. It can do many things and is mostly functional. It still needs some polishing and battle testing though.

var kaChing = require('ka-ching')('/path/to/cache/dir');
var request = require('request');

kaChing('my-cached-resource-id', function () {
  return request('http://google.com/');
}).pipe(destination);

cache-depend

> Utility functions to detect when you should invalidate your cached data

var onDate = require('cache-depend')
               .date('2015-06-23 12:36:00')

onDate.on('change', function (changeinfo) {
  changeinfo.changeId
  changeinfo.startedAt
  changeinfo.endedAt
  // Same here
})

var onOthers = require('cache-depend')
                .others(onEtag, onDate) // any number of arguments

onOthers.on('change', function (changeinfo) {
  changeinfo.changeId // is the same as the one emitted by the first to change
  changeinfo.changed // reference to the changing dependency
})

stream-json-stringify

> JSON.stringify, streaming, non-blocking

Still has some inconsistencies with the behaviour of JSON.stringify in some edge cases but this is being worked on

var stringify = require('stream-json-stringify');
stringify(myBigObject).pipe(process.stdout);

object-iterator

> a module to walk through an object with an iterator

var oi = require('object-iterator');
var source = [8, {one: 1, yes: true}, null];
var next = oi(source);
var v;
while(v = next()) {
    console.log(v.type);
}

// array
// number
// object
// number
// boolean
// end-object
// null
// end-array

url-assembler

> assemble URLs from route-like templates (/path/:param)

UrlAssembler('https://api.site.com/')
  .prefix('/v2')
  .segment('/users/:user')
  .segment('/projects/:project_id')
  .segment('/summary')
  .param({
    user: 'floby',
    project_id: 'node-url-assembler'
  })
  .toString()

// => 'https://api.site.com/users/floby/projects/node-url-assembler/summary'

http-measuring-client

> Like the http module, except with stats

Drop-in replacement for http/https modules. Can also monkey-patch the native modules if necessary

var http = require('http-measuring-client').create();
http.get('http://google.com', function (response) {
  // `response` is your plain old response object
});

http.on('stat', function (parsedUri, stats) {
  // `parseUri` is parsed with url.parse();
  stats.totalTime; // -> total time taken for request
})

disect

> Bisection helper for javascript

disect([10, 20, 30], function(element, index) {
  return element > 11;
})
// returns 20

crossroad

> Semantically-versionned service discovery

This one is my latest work in progress and is therefore not yet functional, but is evolving very quickly

the main design principles are 

• one sidekick process running per host (agent)
• gossip between agents to synchronise running services
• HTTP is the communication protocol
• The client is your regular HTTP client
• Proactive and Reactive consumption from clients

GET /services/my-web-service/~1.0.1
Host: localhost:5555
Accept: application/json

-> 200 OK
-> Content-Type: application/json
-> 
-> {
->   "type": "my-web-service",
->   "uuid": "my-web-service-bd80ddff76e8ae5",
->   "version": "1.0.3",
->   "location": {
->     "host": "172.50.60.22",
->     "port": 8080
->   }
-> }

[Aria Stewart]

> On Dec 22, 2014, at 12:05 PM, Floby <floren...@gmail.com> wrote:
>
> Hello everyone,
>
> I have been writing and publishing tools and modules this year without advertising much any of them. Most of them are related in some way to what I do at work and all of them have been published as to be as general purpose as possible.
> Since publishing is always funnier with real life feedback, I decided to make a list of the stuff I've been working on.
>

Wow. That's quite an excellent list! Nice work!

Aria

[Aria Stewart]

On Dec 22, 2014, at 12:05 PM, Floby <floren...@gmail.com> wrote:

duplex-maker

> Create a duplex stream from a writable and a readable

var writable = fs.createWriteStream('/to/write');
var readable = fs.createReadStream('/to/read');

var duplex = DuplexMaker(writable, readable);

I'm curious if you looked for other modules that do this -- I wrote one, and I'm starting to think about the discoverability problems we create with small modules and no consistent organizational schemes.

 

Aria

[Alexander Praetorius]

this looks very interesting to me :-)
In theory, i would like to build my own "framework", composed of many awesome libraries, that make sense if orchestrated and evolve that over time, by switching out some for others when necessary or when new awesome libraries arrive...

but i figured, i have a hard time building something that some established frameworks offer, because i need more inspiration of how to solve certain things and what are the advantages of different approaches, thus how all the libraries should be used together in order to build solutions.

@your proposed libraries
Libraries used in combination, if looked at as a whole, have some usage philosophy of how to approach problems, which is not easy to see just from looking at the libraries. One can figure out if contemplating about all the libraries mentioned, but its not easy.
Basically, what i am always looking for is a clue of the ways people use combinations of libraries to approach problems.

@my current approach - frontend
I'm regularly looking at all the libs, substack is building and using, to get a grasp on his philosophy of creating solutions and i remember how long it took me until i settled with browserify over alternatives... ...but its just one tiny part of the puzzle.
currently i'm looking at hyperboot & keyboot for having an independent versioned frontend + i'm looking at hyperglue, domjs & platesjs for templating and a project called atomify to have some sense of how to do self contained reusable components.

@my current approach - backend
For the backend (deployment, scaling, management, ...) i'm for now going with strongloop (maybe i should rather use sailsjs?), even though i have some libraries here and there that i would like to explore, but its very hard to get a feeling about the bigger ideas and broader concepts of community members and how they choose certain libraries in order to build their "custom frameworks" and adapt them to their problems.

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[Floby]

@Aria I tried to keep myself informed of new modules and regularly search for modules like this on npm. I wrote some streamy stuff that already existed, except mine are kept up to date with the stream3  API.

The discoverability problem is not so much from many tiny modules, IMO. It's rather that people make very little effort to name things correctly. You'll notice that the only one in my list to have an exotic name is ka-ching which is intended to bring an opnionated framework to caching. The rest of them are named after what they do. And since they do little, what they do can be summed up pretty easily in a single sentence.

@Serapath

yes, I like problems to be solved my way =) but I usually love what the community offers. I use express most the time and a lot of visionmedia's stuff as well as some of substack's. It's funny how the community cristalized around module authors rather than frameworks. I still don't know if that's a cool thing or not, but it definitely help reusability of small components. I'll admit that this might hurt discoverability in some way.

Also, I forgot to add some links to my list

All of it is at https://github.com/Floby

[Alexander Praetorius]

I think currently its just very hard to evaluate what to use and how.
Following certain authors makes it more likely to discover great modules and there is also the hope of interoperability.
If i pick modules based on what i read, they might overlap in scope and its harder to combine them.

I would really love to see a page, where authors with a lot of reputation talk about their favourite libraries and how they fit together.
This would give me a lot of inspiration and less hassle to evaluate modules and also give me some more knowledge about how to evaluate modules quicker in regard to my personal philosophy.

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