ancient-mixins

Ancient Mixins

Core functions, classes, types and interfaces.

Install

npm i --save ancient-mixins

About

Contents superclasses for mixins with your funcionality.

Events

TypeScript typed events. Node EventEmitter based class for listening and emitting events.

Example

import {
  Events,
  IEvents,
  IEventsList,
} from 'ancient-mixins/lib/events';

interface ITestEventsList extends IEventsList {
  a: { b: 'c', d?: 'e' };
}

class TestEvents extends Events implements IEvents<ITestEventsList> {}
const events: IEvents<ITestEventsList> = new TestEvents();
const listener = data => console.log('on', data);

events.on('a', listener);
events.on('b', listener);

events.once('a', data => console.log ('once', data));

events.emit('a', { b: 'c' });
// on { b: 'c' }
// once { b: 'c' }

events.emit('a', { d: 'e' });
// Error TS2345: Argument of type '{ d: "e"; }' is not assignable to parameter of type '{ b: "c"; d?: "e"; }'. 
// Property 'b' is missing in type '{ d: "e"; }'.

events.emit('b', { x: 'y' });
// on { x: 'y' }. No error. It's because of extending ITestEventsList with IEventsList interface. Not specified events are allowed.

events.off('a', listener);
events.destroy();

Node

Class Node make Events more material with unique id and isDestroyed state.

List

Unsafe class List to manipulate nodes.

Example

import { List } from 'ancient-mixins/lib/list';
import { Node } from 'ancient-mixins/lib/node';

const list = new List();
const node = new Node();

List.on('anyNodeEvent', () => console.log ('anyNodeEvent'));

List.add(node);
node.emit('anyNodeEvent');
// anyNodeEvent

Manager

Class Manager gives control functionality for the lists of nodes and has own events. Contains class List, which has role to communicate node events and manager events.

Example

import { Node } from 'ancient-mixins/lib/node';
import { Manager } from 'ancient-mixins/lib/manager';

const manager = new Manager();
const node = new Node();

manager.on('removed', () => console.log('removed'));
manager.on('added', () => console.log('added'));

manager.add(node);
// added
manager.remove(node);
// removed
manager.add(node);
// added
node.destroy();
// removed