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* Browser Runtime - Full client-side Coherent.js runtime
* Works in browsers, Electron, and Tauri
*/
import { renderToString, withState, memo } from '@coherentjs/core';
import { hydrate, autoHydrate, makeHydratable } from '@coherentjs/client';
import { integrateWithWebComponents, defineCoherentElement } from '@coherentjs/web-components';
export class BrowserRuntime {
constructor(options = {}) {
this.options = {
autoHydrate: true,
enableWebComponents: true,
enablePerformanceMonitoring: true,
routingMode: 'hash', // 'hash', 'history', or 'memory'
...options
};
this.componentRegistry = new Map();
this.routeRegistry = new Map();
this.currentRoute = null;
this.isInitialized = false;
// Performance tracking
this.renderMetrics = [];
this.startTime = Date.now();
}
async initialize() {
if (this.isInitialized) return;
// Wait for DOM to be ready
if (document.readyState === 'loading') {
await new Promise(resolve => {
document.addEventListener('DOMContentLoaded', resolve);
});
}
// Initialize Web Components integration
if (this.options.enableWebComponents) {
await this.initializeWebComponents();
}
// Initialize routing
if (this.options.routingMode !== 'none') {
this.initializeRouting();
}
// Auto-hydrate existing components
if (this.options.autoHydrate) {
await this.autoHydrate();
}
// Initialize performance monitoring
if (this.options.enablePerformanceMonitoring) {
this.initializePerformanceMonitoring();
}
this.isInitialized = true;
}
async initializeWebComponents() {
try {
await integrateWithWebComponents(
Object.fromEntries(this.componentRegistry),
this.options.webComponents || {}
);
} catch (error) {
console.warn('Failed to initialize Web Components:', error);
}
}
initializeRouting() {
const handleRouteChange = () => {
const newRoute = this.getCurrentRoute();
if (newRoute !== this.currentRoute) {
this.handleRouteChange(this.currentRoute, newRoute);
this.currentRoute = newRoute;
}
};
if (this.options.routingMode === 'hash') {
window.addEventListener('hashchange', handleRouteChange);
} else if (this.options.routingMode === 'history') {
window.addEventListener('popstate', handleRouteChange);
}
// Handle initial route
this.currentRoute = this.getCurrentRoute();
handleRouteChange();
}
getCurrentRoute() {
if (this.options.routingMode === 'hash') {
return window.location.hash.slice(1) || '/';
} else if (this.options.routingMode === 'history') {
return window.location.pathname;
}
return '/';
}
handleRouteChange(oldRoute, newRoute) {
const handler = this.routeRegistry.get(newRoute) || this.routeRegistry.get('*');
if (handler) {
try {
handler({ route: newRoute, oldRoute, params: this.parseRouteParams(newRoute) });
} catch (error) {
console.error('Route handler error:', error);
}
}
}
parseRouteParams(route) {
// Simple parameter parsing - can be enhanced
const params = {};
const parts = route.split('/').filter(Boolean);
parts.forEach((part, index) => {
if (part.startsWith(':')) {
const key = part.slice(1);
const value = parts[index];
if (value && !value.startsWith(':')) {
params[key] = value;
}
}
});
return params;
}
initializePerformanceMonitoring() {
// Monitor render performance
if (typeof window === 'undefined' || typeof window.PerformanceObserver === 'undefined') return;
const observer = new window.PerformanceObserver((list) => {
for (const entry of list.getEntries()) {
if (entry.name.includes('coherent')) {
this.renderMetrics.push({
name: entry.name,
duration: entry.duration,
startTime: entry.startTime,
timestamp: Date.now()
});
}
}
});
try {
observer.observe({ entryTypes: ['measure', 'mark'] });
} catch (error) {
console.warn('Performance monitoring not available:', error);
}
// Clean up old metrics periodically
setInterval(() => {
const cutoff = Date.now() - 300000; // 5 minutes
this.renderMetrics = this.renderMetrics.filter(m => m.timestamp > cutoff);
}, 60000); // Every minute
}
// Component management
registerComponent(name, component, options = {}) {
// Make component hydratable
const hydratableComponent = makeHydratable(component, {
componentName: name,
...options
});
this.componentRegistry.set(name, hydratableComponent);
// Register as Web Component if enabled
if (this.options.enableWebComponents && this.isInitialized) {
try {
defineCoherentElement(name, hydratableComponent, options);
} catch (error) {
console.warn(`Failed to register Web Component ${name}:`, error);
}
}
return hydratableComponent;
}
getComponent(name) {
return this.componentRegistry.get(name);
}
// Routing
addRoute(path, handler) {
this.routeRegistry.set(path, handler);
}
navigate(path) {
if (this.options.routingMode === 'hash') {
window.location.hash = path;
} else if (this.options.routingMode === 'history') {
window.history.pushState({}, '', path);
this.handleRouteChange(this.currentRoute, path);
this.currentRoute = path;
}
}
// Rendering
async render(component, props = {}, target = null) {
const startMark = `coherent-render-start-${Date.now()}`;
const endMark = `coherent-render-end-${Date.now()}`;
try {
performance.mark(startMark);
// Resolve component
const resolvedComponent = typeof component === 'string'
? this.getComponent(component)
: component;
if (!resolvedComponent) {
throw new Error(`Component not found: ${component}`);
}
// Render component
const vdom = resolvedComponent(props);
const html = renderToString(vdom);
// Find or create target element
let targetElement = target;
if (typeof target === 'string') {
targetElement = document.querySelector(target);
}
if (!targetElement) {
targetElement = document.body;
}
// Update DOM
targetElement.innerHTML = html;
// Hydrate the rendered component
const instance = await hydrate(targetElement.firstElementChild, resolvedComponent, props);
performance.mark(endMark);
performance.measure(`coherent-render-${resolvedComponent.name || 'anonymous'}`, startMark, endMark);
return instance;
} catch (error) {
performance.mark(endMark);
console.error('Render error:', error);
throw error;
}
}
// Create a complete app
async createApp(_options = {}) {
await this.initialize();
return {
// Component management
component: (name, component, opts) => this.registerComponent(name, component, opts),
// Routing
route: (path, handler) => this.addRoute(path, handler),
navigate: (path) => this.navigate(path),
// Rendering
render: (component, props, target) => this.render(component, props, target),
// State management
state: withState,
memo: memo,
// Hydration
hydrate: (element, component, props) => hydrate(element, component, props),
// Utilities
getRuntime: () => this,
getCurrentRoute: () => this.currentRoute,
getPerformanceMetrics: () => [...this.renderMetrics],
// Lifecycle
mount: async (component, target = '#app') => {
const app = await this.render(component, {}, target);
return app;
},
unmount: (target = '#app') => {
const element = typeof target === 'string' ? document.querySelector(target) : target;
if (element) {
element.innerHTML = '';
}
}
};
}
// Auto-hydration
async autoHydrate() {
const componentMap = Object.fromEntries(this.componentRegistry);
await autoHydrate(componentMap);
}
// Static methods for quick setup
static async createQuickApp(components = {}, options = {}) {
const runtime = new BrowserRuntime(options);
// Register all components
Object.entries(components).forEach(([name, component]) => {
runtime.registerComponent(name, component);
});
return await runtime.createApp(options);
}
static async renderToPage(component, props = {}, target = '#app') {
const runtime = new BrowserRuntime({ autoHydrate: false });
await runtime.initialize();
return await runtime.render(component, props, target);
}
// Performance utilities
getPerformanceReport() {
const now = Date.now();
const uptime = now - this.startTime;
const recentMetrics = this.renderMetrics.filter(m => m.timestamp >= now - 60000);
const averageRenderTime = recentMetrics.length > 0
? recentMetrics.reduce((sum, m) => sum + m.duration, 0) / recentMetrics.length
: 0;
return {
uptime,
totalRenders: this.renderMetrics.length,
recentRenders: recentMetrics.length,
averageRenderTime: Math.round(averageRenderTime * 100) / 100,
registeredComponents: this.componentRegistry.size,
registeredRoutes: this.routeRegistry.size,
currentRoute: this.currentRoute,
memoryUsage: this.getMemoryUsage()
};
}
getMemoryUsage() {
if (typeof performance !== 'undefined' && performance.memory) {
return {
used: Math.round(performance.memory.usedJSHeapSize / 1024 / 1024),
total: Math.round(performance.memory.totalJSHeapSize / 1024 / 1024),
limit: Math.round(performance.memory.jsHeapSizeLimit / 1024 / 1024)
};
}
return null;
}
// Development utilities
debug() {
return {
runtime: this,
components: Array.from(this.componentRegistry.keys()),
routes: Array.from(this.routeRegistry.keys()),
performance: this.getPerformanceReport(),
options: this.options
};
}
} |