1 files changed, 14 insertions, 9 deletions
diff --git a/src/lib.rs b/src/lib.rs
index 7db4248..7129898 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,17 +1,22 @@
 use wasm_bindgen::prelude::wasm_bindgen;
 
 #[wasm_bindgen]
+extern {
+    fn alert(s: &str);
+
+    // set the namespace so we can use ‘console.debug’
+    #[wasm_bindgen(js_namespace = console)]
+    fn debug(s: &str);
+}
+
+#[wasm_bindgen]
 pub fn add(left: u32, right: u32) -> u32 {
+    debug(&format!("adding the numbers {} and {}",
+        left, right));
     left + right
 }
 
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn it_works() {
-        let result = add(2, 2);
-        assert_eq!(result, 4);
-    }
+#[wasm_bindgen]
+pub fn test_alert(s: &str) {
+    alert(s)
 }