math-random-seed is a JavaScript library providing a seeded pseudorandom number generator (PRNG). Unlike Math.random(), its output is deterministic based on a user-provided seed. This enables reproducible experiments and simulations, ensuring consistent random number sequences across different environments. Ideal for scenarios requiring controlled randomness, like game development, statistical modeling, or generating test data where repeatability is key. math-random-seed offers functions for generating floating-point, integer, and other random-like values.