feat(dashboard,admin-vite-plugin,admin-bundler,admin-sdk): Rework admin extensions and introduce custom fields API (#9338)

packages/admin/dashboard/src/extensions/links/utils.ts

@@ -0,0 +1,20 @@
+import { CustomFieldModel } from "@medusajs/admin-shared"
+import linkModule from "virtual:medusa/links"
+
+function appendLinkableFields(
+  fields: string = "",
+  linkable: (string | string[])[] = []
+) {
+  const linkableFields = linkable.flatMap((link) => {
+    return typeof link === "string"
+      ? [`+${link}.*`]
+      : link.map((l) => `+${l}.*`)
+  })
+
+  return [fields, ...linkableFields].join(",")
+}
+
+export function getLinkedFields(model: CustomFieldModel, fields: string = "") {
+  const links = linkModule.links[model]
+  return appendLinkableFields(fields, links)
+}