Implement a high-performance Least Recently Used (LRU) Cache in JavaScript using the Map structure with O(1) get and put operations.
Validate whether brackets, braces, and parentheses are properly balanced and closed in matching order using a stack.
Learn modern and traditional techniques to reverse a string in JavaScript, including split-reverse-join, recursion, and for...of loops.
Determine if a word, phrase, or number reads identically backwards and forwards in JavaScript while ignoring non-alphanumeric characters.
Flatten arrays of arbitrary nesting depth into a single linear array using recursion, reduce, and modern flat() methods.
Implement a debounce utility function that delays invoking a callback until after a specified wait time has elapsed since the last time it was called.