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* Static Runtime - For static site generation
* Pre-renders components to static HTML files
*/
import { renderToString } from '@coherentjs/core';
export class StaticRuntime {
constructor(options = {}) {
this.options = {
outputDir: 'dist',
baseUrl: '',
generateSitemap: true,
generateManifest: true,
minifyHtml: true,
inlineCSS: false,
...options
};
this.componentRegistry = new Map();
this.pageRegistry = new Map();
this.staticAssets = new Map();
this.generatedPages = new Map();
// Track build statistics
this.buildStats = {
startTime: Date.now(),
pagesGenerated: 0,
assetsProcessed: 0,
totalSize: 0,
errors: []
};
}
// Component management
registerComponent(name, component, options = {}) {
this.componentRegistry.set(name, {
component,
options
});
return component;
}
getComponent(name) {
const registration = this.componentRegistry.get(name);
return registration ? registration.component : null;
}
// Page registration
addPage(route, component, options = {}) {
this.pageRegistry.set(route, {
component: typeof component === 'string' ? this.getComponent(component) : component,
options: {
title: options.title || 'Page',
description: options.description || '',
keywords: options.keywords || '',
generatePath: options.generatePath || this.routeToPath(route),
props: options.props || {},
...options
}
});
}
routeToPath(route) {
// Convert route pattern to static path
// /users/:id -> /users/[id] (or similar static pattern)
if (route === '/') return '/index.html';
// Handle dynamic routes
if (route.includes(':')) {
// For static generation, dynamic routes need explicit paths
console.warn(`Dynamic route ${route} requires explicit generatePath`);
return null;
}
return route.endsWith('/') ? `${route}index.html` : `${route}.html`;
}
// Static asset management
addAsset(path, content, options = {}) {
this.staticAssets.set(path, {
content,
type: options.type || this.inferContentType(path),
minify: options.minify !== false,
...options
});
}
inferContentType(path) {
const ext = path.split('.').pop().toLowerCase();
const contentTypes = {
'html': 'text/html',
'css': 'text/css',
'js': 'application/javascript',
'json': 'application/json',
'png': 'image/png',
'jpg': 'image/jpeg',
'jpeg': 'image/jpeg',
'gif': 'image/gif',
'svg': 'image/svg+xml',
'ico': 'image/x-icon'
};
return contentTypes[ext] || 'text/plain';
}
// HTML template generation
generateHtmlDocument(content, options = {}) {
const {
title = 'Coherent.js App',
description = '',
keywords = '',
lang = 'en',
charset = 'utf-8',
viewport = 'width=device-width, initial-scale=1',
favicon = '/favicon.ico',
styles = [],
scripts = [],
meta = [],
bodyClass = '',
hydrate = false,
componentName = null,
componentProps = {}
} = options;
const metaTags = [
`<meta charset="${charset}">`,
`<meta name="viewport" content="${viewport}">`,
description && `<meta name="description" content="${description}">`,
keywords && `<meta name="keywords" content="${keywords}">`,
...meta.map(m => typeof m === 'string' ? m : `<meta ${Object.entries(m).map(([k, v]) => `${k}="${v}"`).join(' ')}>`)
].filter(Boolean).join('\n ');
const styleTags = styles.map(style =>
typeof style === 'string'
? style.startsWith('<') ? style : `<link rel="stylesheet" href="${style}">`
: `<style>${style.content}</style>`
).join('\n ');
const scriptTags = [
...scripts.map(script =>
typeof script === 'string'
? script.startsWith('<') ? script : `<script src="${script}"></script>`
: `<script>${script.content}</script>`
),
// Add hydration script if enabled
hydrate && this.generateHydrationScript(componentName, componentProps)
].filter(Boolean).join('\n ');
return `<!DOCTYPE html>
<html lang="${lang}">
<head>
${metaTags}
<title>${this.escapeHtml(title)}</title>
<link rel="icon" href="${favicon}">
${styleTags}
</head>
<body${bodyClass ? ` class="${bodyClass}"` : ''}>
${content}
${scriptTags}
</body>
</html>`;
}
generateHydrationScript(componentName) {
if (!componentName) return '';
return `
<script type="module">
import { autoHydrate } from '/coherent-client.js';
// Auto-hydrate on page load
document.addEventListener('DOMContentLoaded', () => {
autoHydrate({
'${componentName}': window.components?.['${componentName}']
});
});
</script>`;
}
escapeHtml(text) {
if (typeof text !== 'string') return text;
return text
.replace(/&/g, '&')
.replace(/</g, '<')
.replace(/>/g, '>')
.replace(/"/g, '"')
.replace(/'/g, ''');
}
// Build process
async build() {
this.buildStats.startTime = Date.now();
console.log('🏗️ Starting static site generation...');
try {
// Generate all pages
await this.generatePages();
// Process static assets
await this.processAssets();
// Generate additional files
if (this.options.generateSitemap) {
await this.generateSitemap();
}
if (this.options.generateManifest) {
await this.generateManifest();
}
// Generate build report
const buildTime = Date.now() - this.buildStats.startTime;
console.log(`✅ Build completed in ${buildTime}ms`);
console.log(`📄 Generated ${this.buildStats.pagesGenerated} pages`);
console.log(`📦 Processed ${this.buildStats.assetsProcessed} assets`);
return this.getBuildResult();
} catch (error) {
this.buildStats.errors.push(error);
console.error('❌ Build failed:', error);
throw error;
}
}
async generatePages() {
for (const [route, pageConfig] of this.pageRegistry) {
try {
await this.generatePage(route, pageConfig);
this.buildStats.pagesGenerated++;
} catch (error) {
console.error(`Failed to generate page ${route}:`, error);
this.buildStats.errors.push({ route, error });
}
}
}
async generatePage(route, pageConfig) {
const { component, options } = pageConfig;
if (!component) {
throw new Error(`No component found for route: ${route}`);
}
// Render component to HTML
const vdom = component(options.props || {});
const content = renderToString(vdom);
// Wrap in HTML document
const html = this.generateHtmlDocument(content, {
title: options.title,
description: options.description,
keywords: options.keywords,
styles: options.styles || [],
scripts: options.scripts || [],
meta: options.meta || [],
hydrate: options.hydrate,
componentName: options.componentName,
componentProps: options.props || {},
...options.htmlOptions
});
// Minify if enabled
const finalHtml = this.options.minifyHtml ? this.minifyHtml(html) : html;
// Store generated page
const outputPath = options.generatePath || this.routeToPath(route);
if (outputPath) {
this.generatedPages.set(outputPath, {
html: finalHtml,
size: finalHtml.length,
route,
options
});
this.buildStats.totalSize += finalHtml.length;
}
}
minifyHtml(html) {
// Basic HTML minification
return html
.replace(/\s+/g, ' ')
.replace(/>\s+</g, '><')
.replace(/\s+>/g, '>')
.replace(/<\s+/g, '<')
.trim();
}
async processAssets() {
for (const [path, asset] of this.staticAssets) {
try {
let content = asset.content;
// Process asset based on type
if (asset.minify) {
content = this.minifyAsset(content, asset.type);
}
// Store processed asset
this.generatedPages.set(path, {
content,
type: asset.type,
size: content.length
});
this.buildStats.assetsProcessed++;
this.buildStats.totalSize += content.length;
} catch (error) {
console.error(`Failed to process asset ${path}:`, error);
this.buildStats.errors.push({ path, error });
}
}
}
minifyAsset(content, type) {
switch (type) {
case 'text/css':
return content
.replace(/\/\*[\s\S]*?\*\//g, '')
.replace(/\s+/g, ' ')
.replace(/;\s*}/g, '}')
.replace(/\s*{\s*/g, '{')
.replace(/;\s*/g, ';')
.trim();
case 'application/javascript':
// Basic JS minification (in production, use a proper minifier)
return content
.replace(/\/\*[\s\S]*?\*\//g, '')
.replace(/\/\/.*$/gm, '')
.replace(/\s+/g, ' ')
.replace(/\s*([{}();,])\s*/g, '$1')
.trim();
default:
return content;
}
}
async generateSitemap() {
const pages = Array.from(this.generatedPages.keys())
.filter(path => path.endsWith('.html'));
const sitemap = `<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
${pages.map(path => ` <url>
<loc>${this.options.baseUrl}${path.replace('/index.html', '/')}</loc>
<lastmod>${new Date().toISOString().split('T')[0]}</lastmod>
</url>`).join('\n')}
</urlset>`;
this.generatedPages.set('/sitemap.xml', {
content: sitemap,
type: 'application/xml',
size: sitemap.length
});
}
async generateManifest() {
const manifest = {
name: this.options.name || 'Coherent.js App',
short_name: this.options.shortName || 'App',
description: this.options.description || '',
start_url: '/',
display: 'standalone',
theme_color: this.options.themeColor || '#000000',
background_color: this.options.backgroundColor || '#ffffff',
icons: this.options.icons || []
};
const manifestJson = JSON.stringify(manifest, null, 2);
this.generatedPages.set('/manifest.json', {
content: manifestJson,
type: 'application/json',
size: manifestJson.length
});
}
getBuildResult() {
return {
pages: this.generatedPages,
stats: {
...this.buildStats,
buildTime: Date.now() - this.buildStats.startTime
},
success: this.buildStats.errors.length === 0
};
}
// Create static app factory
createApp() {
return {
// Component registration
component: (name, component, opts) => this.registerComponent(name, component, opts),
// Page registration
page: (route, component, opts) => this.addPage(route, component, opts),
// Asset management
asset: (path, content, opts) => this.addAsset(path, content, opts),
// Build process
build: () => this.build(),
// Utilities
getRuntime: () => this,
getStats: () => this.buildStats,
getPages: () => Array.from(this.pageRegistry.keys()),
getAssets: () => Array.from(this.staticAssets.keys())
};
}
// Static factory methods
static createApp(options = {}) {
const runtime = new StaticRuntime(options);
return runtime.createApp(options);
}
static async buildSite(pages = {}, components = {}, options = {}) {
const runtime = new StaticRuntime(options);
// Register components
Object.entries(components).forEach(([name, component]) => {
runtime.registerComponent(name, component);
});
// Register pages
Object.entries(pages).forEach(([route, config]) => {
runtime.addPage(route, config.component, config.options);
});
return await runtime.build();
}
}
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