feat: gatsby source medusa (#924)

packages/gatsby-source-medusa/src/process-node.ts

@@ -0,0 +1,49 @@
+import { capitalize } from "./utils/capitalize"
+
+export const processNode = (
+  node: any,
+  fieldName: string,
+  createContentDigest: (this: void, input: string | object) => string
+): any[] => {
+  const nodeId: string = node.id
+  const nodeContent = JSON.stringify(node)
+  const nodeContentDigest = createContentDigest(nodeContent)
+
+  let images = []
+
+  if (fieldName === "products") {
+    if (node.images?.length) {
+      images = node.images.map((image: any) => {
+        const nodeImageContentDigest = createContentDigest(image.id)
+        const nodeImageContent = JSON.stringify(image)
+
+        const imageData = Object.assign({}, image, {
+          id: image.id,
+          parent: nodeId,
+          children: [],
+          internal: {
+            type: "MedusaImages",
+            content: nodeImageContent,
+            contentDigest: nodeImageContentDigest,
+          },
+        })
+
+        return imageData
+      })
+    }
+    delete node.images
+  }
+
+  const nodeData = Object.assign({}, node, {
+    id: nodeId,
+    parent: null,
+    children: [],
+    internal: {
+      type: `Medusa${capitalize(fieldName)}`,
+      content: nodeContent,
+      contentDigest: nodeContentDigest,
+    },
+  })
+
+  return [nodeData, ...images]
+}