@steelbreeze/delegate

delegate

Multicast delegate for TypeScript and JavaScript.

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Install

npm i @steelbreeze/delegate

Usage

TypeScript

import { create as delegate } from "@steelbreeze/delegate";

const a = delegate(param => console.log(param + " Hello"), param => console.log(param + " World "));
const b = delegate(param => console.log(param + " Hello world"));

const c = delegate(a, b);

a("a")
b("b")
c("c");

JavaScript

var delegate = require("@steelbreeze/delegate");

var a = delegate.create(function (param) { console.log(param + " Hello"); }, function (param) { console.log(param + " World "); });
var b = delegate.create(function (param) { console.log(param + " Hello world"); });

var c = delegate.create(a, b);

a("a");
b("b");
c("c");

Output

The output of the above code will be:

a Hello
a World
b Hello world
c Hello
c World
c Hello world

API

Interfaces

Delegate

A prototype for a delegate function that is callable and may return a value.

interface Delegate<TReturn = any> {
	(...args: any[]): TReturn
}

MulticastDelegate

A prototype for a multicast delegate function that calls multiple delegates and returns all their return values as an array.

interface MulticastDelegate<TReturn = any> {
	(...args: any[]): TReturn[]
}

Functions

create

Creates a new delegate from one or more functions or delegates, the result of which is callable and when called returns an array of all the return values from those functions or delegates.

create<TReturn = any>(...delegates: Delegate<TReturn>[]): MulticastDelegate<TReturn>

License

MIT License

Copyright (c) 2017 David Mesquita-Morris