JavaScript Minifier Formatters

Original JavaScript (567 bytes):

// Calculate the factorial of a number
function calculateFactorial(number) {
    // Base case: factorial of 0 or 1 is 1
    if (number === 0 || number === 1) {
        return 1;
    }
    
    // Recursive case
    let result = 1;
    for (let i = 2; i <= number; i++) {
        result = result * i;
    }
    
    return result;
}

// Example usage
const inputNumber = 5;
const factorial = calculateFactorial(inputNumber);
console.log(`Factorial of ${inputNumber} is ${factorial}`);
                    

Minified JavaScript (112 bytes - 80% reduction):

function c(n){if(n===0||n===1)return 1;let r=1;for(let i=2;i<=n;i++)r=r*i;return r}const i=5,f=c(i);
                    

Common Minification Optimizations:

• Whitespace Removal: Eliminates spaces, tabs, and line breaks
• Comment Stripping: Removes all single-line and multi-line comments
• Variable Renaming: Shortens variable and function names (a, b, c...)
• Dead Code Elimination: Removes unreachable code
• Constant Folding: Pre-calculates constant expressions
• Function Inlining: Replaces function calls with function body when beneficial

Advanced Optimizations:

• Tree Shaking: Removes unused exports from modules
• Scope Hoisting: Flattens scope to reduce function calls
• Property Mangling: Shortens object property names
• Boolean Optimization: Converts true/false to !0/!1
• Loop Optimization: Optimizes loop structures

• Keep Original Files: Always maintain unminified source files for development
• Use Build Tools: Automate minification with webpack, Rollup, or Parcel
• Test Thoroughly: Always test minified code in production-like environment
• Version Control: Track both source and minified files appropriately
• Cache Busting: Use versioned filenames for proper browser caching
• Combine Files: Concatenate multiple JS files before minifying
• Enable Compression: Use GZIP/Brotli compression on server
• Monitor Performance: Track load times and user experience metrics