@types/d3-dispatch

Creating a dispatch

This code demonstrates how to create a dispatcher with custom event types: 'load', 'progress', and 'error'. It allows you to register and trigger these events in your application.

import { dispatch } from 'd3-dispatch';

const dispatcher = dispatch('load', 'progress', 'error');

Registering event listeners

This code shows how to register different event listeners for the events created in the dispatcher. Each event type has a corresponding function that will be called when that event is dispatched.

dispatcher.on('load', loadData);
dispatcher.on('progress', updateProgress);
dispatcher.on('error', handleError);

Dispatching events

This code illustrates how to dispatch the 'load' and 'progress' events with associated data. The 'load' event is dispatched with a URL, and the 'progress' event with a numeric value representing progress.

dispatcher.call('load', this, { url: 'http://example.com/data' });
dispatcher.call('progress', this, 50);