Perlin Noise Library (PerlinNoise) 🌊 Smooth coherent noise for procedural generation. Methods PerlinNoise.seed(value) Sets the seed for noise generation. PerlinNoise.noise2D(x, y) Returns a smooth noise value between -1.0 and 1.0. Example: let val = PerlinNoise.noise2D(x * 0.1, y * 0.1);