Determinant-Solver

In a bid to translate a little machine learning maths into javascript, I thought I'd start off by making a program that solves any nxn determinant via recursion. To break it down a little further it:

1. Takes an nxn array.

2. Performs a bunch of error checks to validate input.

3. If no errors are returned it passes the array into a function that performs the calculation.

4. Called using an error first callback

   e.g

   
   det( [[1,3],[2,4]], (err,res) => {
     if(err){
         console.log(err)
     }
     else {
       console.log(res); //returns -2
     }
    });
    
     
   
   det( [[3,2,1],[2,-1,-3],[-1,2,-4]], (err,res) => {
      if(err){
         console.log(err)
     }
     else {
       console.log(res); //returns 55
     }
   });
   
   
   
   

Mindblowing stuff