feat(fibonacci): Implementa função fibonacci

04-fibonacci/index.js

@@ -1,4 +1,13 @@
 export function fibonacci(value) {
   // implementar logica aqui
-  
+  let first = 0;
+  let second = 1;
+  if (value <= 1) {
+    return value;
+  }
+  for(let i = 3; i <= value; i++){
+    second = first + second;
+    first = second - first;
+  }
+  return first + second;
 }