Solved timer challenge jscomplete#4. A little convoluted

1-getting-started/2-timers/9-more-challenges-2.js

@@ -0,0 +1,14 @@
+const greeting = delay => {
+    const newDelay = Math.ceil(delay / 5);
+    const intervalDelay = newDelay * 100;
+    const intervalId = setInterval(() => {
+        console.log(`Hello world. ${intervalDelay}`);
+        delay += 1;
+        if (delay > (newDelay * 5)) {
+            clearInterval(intervalId);
+            greeting(delay);
+        }
+    }, intervalDelay);
+}
+
+greeting(1);

1-getting-started/2-timers/9-more-challenges.txt

@@ -1,4 +1,4 @@
-Challenge 1:
+Challenge 1: 
 
   Print "Hello World" forever. Starting with a delay of 1 second
   but then incrementing the delay by 1 second each time.