WC EventDispatcher

Simple, concise, ES2015 EventDispatcher. Targeted for WebCraft, but can work alone.

Installation

$ npm install --save wc-eventemitter

Documentation

addEventListener( types, listener )

• types : string || RegExp || [ ...string || RegExp ]. Strings with spaces are split into arrays.
• listener : function. Callback that is invoked.

hasEventListener( type, listener )

• type: string. RegExp listeners cannot be checked.
• listener: function.

removeEventListener( type, listener )

• type: string || [ ...string ]. RegExp listeners cannot be removed.
• listener: function.

dispatchEvent( type, event, ...args )

• type: string. If first argument is not a string, event.type is used.
• event: object. .type and .target are always overridden.
• args: *. Additional values that can be passed to listeners.

Example

import EventEmitter from "./node_modules/wc-eventdispatcher/src/EventDispatcher.js";

class Example extends EventEmitter {};

const example = new Example();

example.addEventListener( "one two three", e => console.log( e.type, e ) );

example.dispatchEvent( "one", { foo: "bar" } );
> "one" { foo: "bar", type: "one", target: <Example> }