cleanup docs

src/Util/mutualExclude.js

@@ -1,4 +1,22 @@
 
+// TODO: rename mutex
+
+/**
+ * Creates a mutual exclude function with the following property:
+ *
+ * @example
+ * const mutualExclude = createMutualExclude()
+ * mutualExclude(function () {
+ *   // This function is immediately executed
+ *   mutualExclude(function () {
+ *     // This function is never executed, as it is called with the same
+ *     // mutualExclude
+ *   })
+ * })
+ *
+ * @return {Function} A mutual exclude function
+ * @public
+ */
 export function createMutualExclude () {
   var token = true
   return function mutualExclude (f) {