export function triangleArea(base, height) { 
  // your code here
 var calculaarea = require("Area-triangulo-df");
 var base = 0;
 var height = 0;
 var area = 0;
} 

console.log("calcula a area de um triangulo");
base = parseFloat(readline.Question("base: "));
height = parseFloat(readline.Question("height "));
// area = calculaarea(base*height)/2;
area = calculaarea(base, height);

console.log("area do triangulo e;" + area)