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* Bundle size optimization through tree-shaking and code analysis
*/
export class BundleOptimizer {
constructor() {
this.usedComponents = new Set();
this.usedUtilities = new Set();
this.componentDependencies = new Map();
this.unusedCode = new Set();
}
// Analyze component tree to identify what's actually used
analyzeUsage(rootComponent, props = {}) {
const analysisContext = {
componentStack: [],
propsFlow: new Map(),
conditionalBranches: new Set()
};
this.traverseComponent(rootComponent, props, analysisContext);
return this.generateOptimizationReport();
}
traverseComponent(component, props, context) {
const componentName = this.getComponentName(component);
// Track component usage
this.usedComponents.add(componentName);
context.componentStack.push(componentName);
// Track props flow for optimization
context.propsFlow.set(componentName, Object.keys(props));
// Analyze component implementation
if (typeof component === 'function') {
this.analyzeFunctionComponent(component, props, context);
} else if (typeof component === 'object') {
this.analyzeObjectComponent(component, context);
}
context.componentStack.pop();
}
analyzeFunctionComponent(component, props, context) {
const componentStr = component.toString();
// Detect conditional rendering patterns
const conditionalPatterns = [
/\?\s*\{/g, // Conditional objects
/&&\s*\{/g, // Logical AND rendering
/if\s*\(/g // If statements
];
for (const pattern of conditionalPatterns) {
const matches = componentStr.match(pattern);
if (matches) {
context.conditionalBranches.add(`${this.getComponentName(component)}_conditional`);
}
}
// Try to execute with sample props to discover runtime paths
try {
const result = component(props);
if (result) {
this.traverseComponent(result, {}, context);
}
} catch {
// Component might need specific props, skip runtime analysis
}
}
analyzeObjectComponent(obj, context) {
if (Array.isArray(obj)) {
obj.forEach(item => {
if (item && typeof item === 'object') {
this.traverseComponent(item, {}, context);
}
});
return;
}
const keys = Object.keys(obj);
if (keys.length === 1) {
const tagName = keys[0];
const props = obj[tagName];
// Track HTML tag usage
this.usedComponents.add(`html_${tagName}`);
// Traverse children
if (props && typeof props === 'object') {
if (props.children) {
if (Array.isArray(props.children)) {
props.children.forEach(child => {
this.traverseComponent(child, {}, context);
});
} else {
this.traverseComponent(props.children, {}, context);
}
}
}
}
}
getComponentName(component) {
if (typeof component === 'function') {
return component.name || 'AnonymousFunction';
}
if (typeof component === 'object' && component) {
const keys = Object.keys(component);
return keys.length > 0 ? `Object_${keys[0]}` : 'EmptyObject';
}
return 'Unknown';
}
// Generate optimization recommendations
generateOptimizationReport() {
return {
usedComponents: Array.from(this.usedComponents),
componentDependencies: Object.fromEntries(this.componentDependencies),
optimizationOpportunities: this.findOptimizationOpportunities(),
bundleEstimate: this.estimateBundleSize(),
recommendations: this.generateRecommendations()
};
}
findOptimizationOpportunities() {
const opportunities = [];
// Check for unused utilities
const coreUtilities = ['validateCoherentObject', 'mergeProps', 'cloneCoherentObject'];
const unusedUtilities = coreUtilities.filter(util => !this.usedUtilities.has(util));
if (unusedUtilities.length > 0) {
opportunities.push({
type: 'unused_utilities',
impact: 'medium',
description: `Remove unused utilities: ${unusedUtilities.join(', ')}`,
estimatedSavings: unusedUtilities.length * 2 // KB estimate
});
}
// Check for component consolidation opportunities
const htmlComponents = Array.from(this.usedComponents)
.filter(name => name.startsWith('html_'));
if (htmlComponents.length < 10) {
opportunities.push({
type: 'minimal_html_tags',
impact: 'high',
description: 'Create minimal HTML tag bundle for smaller apps',
estimatedSavings: 15 // KB estimate
});
}
return opportunities;
}
estimateBundleSize() {
const baseFrameworkSize = 25; // KB
const componentOverhead = this.usedComponents.size * 0.5; // KB per component
const utilitySize = this.usedUtilities.size * 2; // KB per utility
return {
estimated: baseFrameworkSize + componentOverhead + utilitySize,
breakdown: {
framework: baseFrameworkSize,
components: componentOverhead,
utilities: utilitySize
}
};
}
generateRecommendations() {
const recommendations = [];
if (this.usedComponents.size < 5) {
recommendations.push({
priority: 'high',
action: 'Consider creating a minimal bundle with only required components',
impact: 'Reduce bundle size by 40-60%'
});
}
if (this.usedComponents.size > 50) {
recommendations.push({
priority: 'medium',
action: 'Implement code-splitting to load components on demand',
impact: 'Improve initial load time by 30-50%'
});
}
return recommendations;
}
// Generate optimized bundle configuration
generateOptimizedConfig() {
return {
entryPoints: {
core: ['./src/coherent.js'],
components: Array.from(this.usedComponents)
.filter(name => !name.startsWith('html_'))
.map(name => `./src/components/${name}.js`),
utilities: Array.from(this.usedUtilities)
.map(name => `./src/core/${name}.js`)
},
treeShaking: {
unusedExports: Array.from(this.unusedCode),
sideEffects: false
},
optimization: {
minify: true,
splitChunks: this.usedComponents.size > 20
}
};
}
}
export const bundleOptimizer = new BundleOptimizer();
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