Example of IconServiceDecorator

Here is an example of IconServiceDecorator

class IconServiceDecorator { constructor() { this.delegate = new Material.IconService(); this.icons = {}; } getIcon(group, name) { if(this.icons[group] && this.icons[group][name]) { return this.icons[group][name]; } return this.delegate.getIcon(group, name); } }

Material.iconService = new IconServiceDecorator();