Paipu NPM | npm.io

paipu

Piapue is Japanese for Pipe, and it's also pipes library for Node.

Install

npm i paipu

Usage

You can throw anything into the pipe:

Functions and Promises will be evaluated and the result will be the context for the next pipe
Other pipes will extend the current pipe
Anything else will set the context for the rest of the pipe

To execute a pipe, call resolve() at the end of it.

Examples

Simple pipe:

const paipu = require('paipu');

const result = 
	await paipu
		.pipe('hello')
		.pipe(context => context.substr(0, 4))
		.resolve();

// Result = 'hell'

Pipe with promises:

const  paipu  =  require('paipu');

const  result  =
	await paipu
		.pipe('abcdefg')
		.pipe(async context => context.substr(0, 3))
		.resolve();

// Result = 'hell'

Pipe with nested pipes:

const paipu = require('paipu');

const encrypt =  
	paipu
		.pipe(context => context.replace('a', 'b'))
		.pipe(context => context.replace('c', 'd'))
  

const result =
	await paipu
		.pipe('abcdefg')
		.pipe(encrypt)
		.resolve();
		
// Result = 'bbddefg'

There are also before/after pipe hooks and aliases:

const paipu = require('paipu');

paipu
	.beforePipe((alias, context) => console.log(`executing '${alias}'...`))
	.afterPipe((alias, context) => console.log(`'${alias}' has finished!`))
	.pipe('throw in a string', 'abcdefg')
	.pipe('cut that goddamn string', async context => context.substr(0, 3))
	.resolve();

And they will effect nested pipes too!