Class RecursiveShadowCasting<T>

You can find an idea of how it works here: http://www.roguebasin.com/index.php?title=FOV_using_recursive_shadowcasting

const grid = [
     [1, 0, 0],
     [0, 0, 0],
     [0, 0, 0],
     [0, 0, 0]
 ];

 const fov = new RecursiveShadowCasting(grid, (c) => c === 0, { radius: 2 });

 const result = fov.compute({ x: 0, y: 0 });

 console.log(result);

 {
     status: 'Success',
     positions: [
         { x: 0, y: 0 },
         { x: 1, y: 1 },
         { x: 1, y: 0 },
         { x: 0, y: 1 }
     ]
 }