diff --git a/index.js b/index.js
index e69de29bb2..76f86f5175 100644
--- a/index.js
+++ b/index.js
@@ -0,0 +1,25 @@
+function shout(string) {
+  return string.toUpperCase()
+}
+
+function whisper(string) {
+  return string.toLowerCase()
+}
+
+function logShout(string) {
+  console.log(shout(string))
+}
+
+function logWhisper(string) {
+  console.log(whisper(string))
+}
+
+function sayHiToGrandma(string) {
+  if (string.toLowerCase() === string) {
+    return "I can't hear you!"
+  } else if (string.toUpperCase() === string) {
+    return "YES INDEED!"
+  } else if (string === "I love you, Grandma.") {
+    return "I love you, too."
+  }
+}
\ No newline at end of file