Moved the damageFormula function to damageAction

module/data/action/damageAction.mjs

@@ -2,4 +2,17 @@ import DHBaseAction from './baseAction.mjs';
 
 export default class DHDamageAction extends DHBaseAction {
     static extraSchemas = [...super.extraSchemas, 'damage', 'target', 'effects'];
+
+    /**
+     * Return a display ready damage formula string
+     * @returns Formula string
+     */
+    getDamageFormula() {
+        const strings = [];
+        for (const { value } of this.damage.parts) {
+            strings.push(Roll.replaceFormulaData(value.getFormula(), this.actor?.getRollData() ?? {}));
+        }
+
+        return strings.join(' + ');
+    }
 }