Seedable pseudo random number generator written in javascript var PRNG = require('prng'), prng = new PRNG(123456789); prng.rand(9) // => random number in a range from 0 to 9prng.rand(10, 100) // => random number in a range from 10 to 100prng.rand(-1000, -700) // => random number in a range from -1000 to -700 prng = new PRNG(); // use default seedprng.rand(5555) // => 930