Update and rename check_for_boolean.md to check-for-boolean-primitive-values.md

snippets/check-for-boolean-primitive-values.md

@@ -0,0 +1,8 @@
+### Check for boolean primitive values
+
+Use `typeof` to check if a value is classified as a boolean primitive.
+
+```js
+const isBool = val => typeof val === 'boolean';
+// isBool(null) -> false
+```

snippets/check_for_boolean.md

@@ -1,10 +0,0 @@
-### Check for Boolean Primitive Values
-
-Check if a value is classified as a boolean primitive. Return true or false.
-
-function booWho(bool) {
-  return typeof bool === 'boolean';
-}
-
-// test here
-booWho(null);