linqnode

A minimalistic, simple, javascript LINQ library. The core, essential LINQ functionality C# developers are used to in a clean, minimal, unobtrusive and tiny (less than 300 lines of code) library. This library includes only the very basic, and most widely used parts (where, select, order by, then by). All iterators use delayed execution (the collection is not iterated until you call to_list() or forEach()).

Install (from your project dir):

$ npm install linqnode

Usage:

var linq = require('linqnode');
// let's have a data structure
var cars = [
    {
        Make: "Toyota",
        Model: "Avensis",
        Year: 2008
    },
    {
        Make: "Mazda",
        Model: "6",
        Year: 2009
    },
    {
        Make: "Mazda",
        Model: "6",
        Year: 2011
    },
    {
        Make: "Mazda",
        Model: "3",
        Year: 2010
    },
    {
        Make: "Mazda",
        Model: "3",
        Year: 2009
    }
];
// optionally, linqify it (this will give you .where / .select and friends functions within the datastructure)
// if you prefer, simply call the equivalent linq.<method>(structure, ..) methods.
linq.linqify(cars);

// filter, order, select with delayed execution
var mazda_cars = cars
                .where(function(car) { return car.Make === "Mazda"; })
                .order_by(function(car) { return car.Model; })
                .then_by_desc(function(car) { return car.Year; })
                .select(function(car) { return { CarModel: car.Model, YearOfModel: car.Year, CarMake: "MAZDA" }})
                .to_list();