Initial work, copied from the Shopify provider

framework/saleor/utils/get-categories.ts

@@ -0,0 +1,29 @@
+import { SaleorConfig } from '../api'
+import { CollectionEdge } from '../schema'
+import getSiteCollectionsQuery from './queries/get-all-collections-query'
+
+export type Category = {
+  entityId: string
+  name: string
+  path: string
+}
+
+const getCategories = async (config: SaleorConfig): Promise<Category[]> => {
+  const { data } = await config.fetch(getSiteCollectionsQuery, {
+    variables: {
+      first: 250,
+    },
+  })
+
+  return (
+    data.collections?.edges?.map(
+      ({ node: { id: entityId, title: name, handle } }: CollectionEdge) => ({
+        entityId,
+        name,
+        path: `/${handle}`,
+      })
+    ) ?? []
+  )
+}
+
+export default getCategories