Simple API
The API is simple, consisting of only a single function,
from
. from
wraps your data and allows you
to define a set of chained operations on the data. Finally you
explicitly converted it back into a JS type.
Type safe
The library is written 100 % with TypeScript and it comes with type definitions included. If you choose to use Typescript the whole API is built for excellent typing support.
Fast
The library uses lazy evaluation and pipelining. This means that all the elements of a sequence flow through the entire chain one by one, which means only a minimal amount of elements need to be iterated, saving precious cycles. Also there's no need for intermediary arrays, saving memory.
Getting started
Install the library using NPM
npm install --save fromfrom
Use it like a boss
import { from } from "fromfrom";
// Transform an array of users
const users = [
{ id: 1, name: "John", age: 31, active: true },
{ id: 2, name: "Jane", age: 32, active: false },
{ id: 3, name: "Luke", age: 33, active: false },
{ id: 4, name: "Mary", age: 34, active: true }
];
from(users)
.filter(user => user.active)
.sortByDescending(user => user.age)
.toArray();
// Returns
// [
// { id: 4, name: "Mary", age: 34, active: true },
// { id: 1, name: "John", age: 31, active: true }
// ]