export default class Component { /** @param {AppContext} appContext */ constructor(appContext) { this.componentId = `component-${this.constructor.name}`; this.appContext = appContext; /** @type Component[] */ this.children = []; this.initialized = Promise.resolve(); } async eventReceived(name, data) { await this.initialized; console.log(`Received ${name} to ${this.componentId}`); const fun = this[name + 'Listener']; let propagateToChildren = true; if (typeof fun === 'function') { propagateToChildren = await fun.call(this, data) !== false; } if (propagateToChildren) { for (const child of this.children) { child.eventReceived(name, data); } } } trigger(name, data) { this.appContext.trigger(name, data); } }