♻️ Deduplicate self-ancestor code

lib/element/custom_element.js

@@ -1267,13 +1267,7 @@ function renderContentsWithTemplate(element, template, variables, slot_data, ple
 	variables.hawkejs_renderer = renderer;
 
 	if (element.is_custom_hawkejs_element) {
-		variables.setEphemeralGetter('self', () => {
-
-			// Ensure the element options are ready
-			element.ensureConstructed();
-
-			return element;
-		});
+		addSelfAncestor(variables, element);
 	}
 
 	Hawkejs.series(next => {
@@ -2855,21 +2849,7 @@ Element.setMethod(function applyCompiledTemplate(fnc) {
 		render_vars = renderer.prepareVariables();
 	}
 
-	render_vars.setEphemeralGetter('self', () => {
-
-		// Ensure the element options are ready
-		this.ensureConstructed();
-
-		return this;
-	});
-
-	render_vars.setEphemeralGetter('$ancestor_element', () => {
-
-		// Ensure the element options are ready
-		this.ensureConstructed();
-
-		return this;
-	});
+	addSelfAncestor(render_vars, this);
 
 	let elements = renderer.evaluate(fnc, render_vars),
 	    i;
@@ -2883,6 +2863,35 @@ Element.setMethod(function applyCompiledTemplate(fnc) {
 	_finishRender.call(this);
 });
 
+/**
+ * Add `self` and `$ancestor_element` ephemeral variables
+ *
+ * @author   Jelle De Loecker <[email protected]>
+ * @since    2.4.0
+ * @version  2.4.0
+ *
+ * @param    {Hawkejs.Variables}   variables
+ * @param    {Element}             element
+ */
+const addSelfAncestor = (variables, element) => {
+
+	variables.setEphemeralGetter('self', () => {
+
+		// Ensure the element options are ready
+		element.ensureConstructed();
+
+		return element;
+	});
+
+	variables.setEphemeralGetter('$ancestor_element', () => {
+
+		// Ensure the element options are ready
+		element.ensureConstructed();
+
+		return element;
+	});
+};
+
 /**
  * Make sure this element is ready for use.
  *