import math from "./math.min.js"

math.config({number:"BigNumber"})

var customFunctions = {
    customDivision: (left, right) => {
        if (right == 0)
        {
            if(left == 0)
                throw "ZeroByZero"
            else if (left > 0)
                throw "PlusInfinity"
            else
                throw "MinusInfinity"
        }
        return math.divide(left,right);
    }
};

math.import(customFunctions);

var y = math.parse("-1/0");

y = y.transform(function (node, path, parent) {
    if (node.isOperatorNode && node.op === '/') {
      return new math.expression.node.FunctionNode(
          new math.expression.node.SymbolNode('customDivision'),
          node.args);
    }
    else {
      return node;
    }
  })

var r;
try{
    r = y.eval().toString();
}
catch(e) {
    r = e;
}
r