Bob

typescript/bob/bob.ts

@@ -0,0 +1,24 @@
+const isQuestion = (message: string): boolean => message.trim().endsWith("?");
+const hasUpperCase = (message: string): boolean =>
+  Boolean(message.match(/[A-Z]/));
+const hasLowerCase = (message: string): boolean =>
+  Boolean(message.match(/[a-z]/));
+const isOnlyUpperCase = (message: string): boolean =>
+  hasUpperCase(message) && !hasLowerCase(message);
+const isEmpty = (message: string): boolean => message.trim() === "";
+
+export function hey(message: string): string {
+  if (isQuestion(message)) {
+    if (isOnlyUpperCase(message)) {
+      return "Calm down, I know what I'm doing!";
+    }
+    return "Sure.";
+  }
+  if (isOnlyUpperCase(message)) {
+    return "Whoa, chill out!";
+  }
+  if (isEmpty(message)) {
+    return "Fine. Be that way!";
+  }
+  return "Whatever.";
+}