linq-extensions

A collection of extension methods with lazy evaluation for builtin JavaScript collections inspired by Linq from C#. This library aims to extend the builtin collections of JavaScript with new lazily evaluated collection manipulation methods in a type safe manner. The library is written in TypeScript and has full type definitions avaliable.

Setup

The package is avaliable on npm. To install it you just have to type npm install linq-extensions into your console.

The full setup requires an extra step for TypeScript users. Since this library heavily relies on Iterators and Generators it is recommended to add ES2015 to the lib section of your tsconfig.json.

If you want to use the Iterables returned by the Linq operators in for-of loops you need to set the downlevelIteration flag true in your tsconfig.json. This is optional, and not necessary if you do not use the Iterables in for-of loops.

Usage

The usage of the library is very simple. Just import the library where you wish to use the extension methods.

import 'linq-extensions';

for (const element of people.where(x => x.age < 30).orderByDescending(x => x.age).select(x => x.name)) {
  // ..
}

This line is very important since this runs the code that adds the new methods to the prototype of the builtin collections. You can use require() in node js when writing JavaScript code.

Extension method documentations

For the documentations please visit the wiki page of the repository.