Consider using "forEach" instead of "map" as its return value is not being used here

src/app/search/components/criteria/search-type/checkbox.component.ts

@@ -59,7 +59,7 @@ export class CheckboxComponent {
             this.checkboxes.enable();
         } else {
             const checkboxCriterion = criterion as SelectMultipleCriterion;
-            checkboxCriterion.options.map(option => {
+            checkboxCriterion.options.forEach(option => {
                 this.checkboxesFormControls.find(formControl => formControl.value === option.value).control.setValue(true);
             });
             this.checkboxes.disable();