Easily choose a random item from a weighted list of items.

A fair, queue-based rate-limiting library for Node.js and browsers that prioritizes users with shorter queues and ensures quick responsiveness for new users under high load.

Seedable pseudorandom number generator (PRNG).

A weighted random item sampler (selector), where the probability of selecting an item is proportional to its weight. The sampling method utilizes a binary search optimization, making it suitable for performance-demanding applications where the set of items is large and the sampling frequency is high.