feat(medusa): Adds filtering to order listing for use in admin (#149)

packages/medusa/src/services/swap.js

@@ -57,6 +57,16 @@ class SwapService extends BaseService {
     this.eventBus_ = eventBusService
   }
 
+  /**
+   * @param {Object} selector - the query object for find
+   * @return {Promise} the result of the find operation
+   */
+  list(selector, offset, limit) {
+    return this.swapModel_
+      .find(selector, {}, offset, limit)
+      .sort({ created: -1 })
+  }
+
   /**
    * Used to validate user ids. Throws an error if the cast fails
    * @param {string} rawId - the raw user id to validate.