Can you please edit the writing part? It is pretty ugly and confusing. It can be done better. :)

Random Test is Not random enough.

Trivial map/filter/reduce is not a novel kata idea.

js sample tests are broken

The description has the following example:

nole(5) = 5 * 1/4 * 3 * 1/2 * 1

But the reference solution computes:

nole(5) = 1 * 1/2 * 3 * 1/4 * 5

These result may be different if computations are done with floating-point numbers (for example, they are different for n = 10). You may either:

1. Compare result with assert_approx_equals.

2. Clearly specify the order of all operations (not recommended).

3. Compute and test exact results using Fraction.