diff --git a/index.js b/index.js
index e69de29bb2d..c02a6c1bfba 100644
--- a/index.js
+++ b/index.js
@@ -0,0 +1,25 @@
+function shout(string) {
+  return string.toUpperCase()
+}
+function whisper(str) {
+  return str.toLowerCase()
+}
+function logShout(str) {
+  console.log(str.toUpperCase())
+}
+function logWhisper(str) {
+  console.log(str.toLowerCase())
+}
+function sayHiToGrandma(str) {
+  if (str.toLowerCase() === str) {
+    return "I can't hear you!"
+  }
+
+  if (string.toUpperCase() === string) {
+    return "YES INDEED!"
+  }
+
+  if (string === "I love you, Grandma.") {
+    return "I love you, too."
+  }
+}