phaser/v3/src/math/pow2/GetPowerOfTwo.js

//  Takes value and returns the nearest power of 2

var GetPowerOfTwo = function (value)
{
    //  Math.log(2)
    var index = Math.log(value) / 0.6931471805599453;

    return (1 << Math.ceil(index));
};

module.exports = GetPowerOfTwo;