Initial work, copied from the Shopify provider

framework/saleor/utils/get-sort-variables.ts

@@ -0,0 +1,32 @@
+const getSortVariables = (sort?: string, isCategory: boolean = false) => {
+  let output = {}
+  switch (sort) {
+    case 'price-asc':
+      output = {
+        sortKey: 'PRICE',
+        reverse: false,
+      }
+      break
+    case 'price-desc':
+      output = {
+        sortKey: 'PRICE',
+        reverse: true,
+      }
+      break
+    case 'trending-desc':
+      output = {
+        sortKey: 'BEST_SELLING',
+        reverse: false,
+      }
+      break
+    case 'latest-desc':
+      output = {
+        sortKey: isCategory ? 'CREATED' : 'CREATED_AT',
+        reverse: true,
+      }
+      break
+  }
+  return output
+}
+
+export default getSortVariables