Naughty Programmer's Madness

    node-pipeline

    1.0.2 • Public • Published

    pipeline

    Node.js module for simplifying and sequencing a number of dependent functions and callbacks.

    Simple module to performing asynchronous inter-dependent series operations in node. Unlike other more complicated approaches, this is pure javascript and very small (~100 lines of code with comments).

    Install

    npm install node-pipeline
    

    Simple example for calculating gratuity

    This example is in the tests folder. It is basic and does not fully test all error conditions, but it is a good way to get the hang of the module.

    var pipeline = require('node-pipeline'),
        pl = pipeline.create("Tax and Gratuity Calculator");
     
    pl.on('end', function(err, results) {
        if (err) {
            console.log('Error in pipeline: ' + err);
        }
     
        console.log("Raw results" + JSON.stringify(results, 2) );
        process.exit();
    });
     
     
    pl.use(function(results, next) {
        var price = Number(results[0].price),
            taxrate = Number(results[0].taxrate);
     
        next(null, { tax : price * taxrate });
    });
     
     
    pl.use(function(results, next) {
        var price = Number(results[0].price),
            tax = Number(results[1].tax),
            gratuityrate = Number(results[0].gratuityrate);
     
        next(null, { gratuity : (price + tax) * gratuityrate }) 
    });
     
     
    pl.execute({
        currency: "USD",
        symbol: "$",
        price: argv.price || 0,
        taxrate: argv.tax || 0.0825,
        gratuityrate: argv.gratuity || "0.25"
    });

    Install

    npm i node-pipeline

    DownloadsWeekly Downloads

    5

    Version

    1.0.2

    License

    MIT

    Last publish

    Collaborators

    • tommydudebreaux