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memoizeFunction() function

Highly optimized memoization function that caches results based on argument identity. Provides configurable cache size limits and automatic memory management.

Key performance optimizations: - Uses WeakMap for automatic garbage collection of object arguments - Efficient primitive value caching with shared dictionary - Configurable cache size limits to prevent memory leaks - Global reset counter for bulk cache invalidation - Fast argument normalization

Signature:

export declare function memoizeFunction<T extends (...args: any[]) => RetType, RetType>(fn: T, maxCacheSize?: number, ignoreNullOrUndefinedResult?: boolean): T;

Parameters

Parameter	Type	Description
fn	T	Function to memoize
maxCacheSize	number	(Optional) Maximum cache entries before reset (0 = unlimited, default 100)
ignoreNullOrUndefinedResult	boolean	(Optional) Re-compute if result is null/undefined until non-null result

Returns:

T

Memoized version of the function

Example

const expensiveFunction = memoizeFunction((a: number, b: string) => {
  // Expensive computation
  return a * b.length + Math.random();
});

// Subsequent calls with same arguments return cached result
const result1 = expensiveFunction(5, "hello");
const result2 = expensiveFunction(5, "hello"); // Cached