chore: fix util JSDocs

lib/util/CompatibilityUtil.js

@@ -3,6 +3,10 @@ import {
   isFunction
 } from 'min-dash';
 
+/**
+ * @typedef {import('../model/Types').ModdleElement} ModdleElement
+ */
+
 // TODO(nikku): remove with future bpmn-js version
 
 /**
@@ -12,6 +16,10 @@ import {
  * 2) If Promise class is implemented in current environment.
  *
  * @private
+ *
+ * @param {Function} api
+ *
+ * @return {Function}
  */
 export function wrapForCompatibility(api) {
 
@@ -60,6 +68,11 @@ export function wrapForCompatibility(api) {
 
 var DI_ERROR_MESSAGE = 'Tried to access di from the businessObject. The di is available through the diagram element only. For more information, see https://github.com/bpmn-io/bpmn-js/issues/1472';
 
+/**
+ * @private
+ *
+ * @param {ModdleElement} businessObject
+ */
 export function ensureCompatDiRef(businessObject) {
 
   // bpmnElement can have multiple independent DIs