adding some type changes

src/Product.ts

@@ -128,6 +128,28 @@ export class Product {
     sps.tags = this.tags
     sps.title = this.title
     sps.descriptionHtml = this.description
+    sps.metafields = []
+    if (this.product_height_cm > 0) {
+      sps.metafields.push({
+        key: "product_height_cm",
+        namespace: "custom",
+        value: this.product_height_cm.toString(),
+      })
+    }
+    if (this.product_width_cm > 0) {
+      sps.metafields.push({
+        key: "product_width_cm",
+        namespace: "custom",
+        value: this.product_width_cm.toString(),
+      })
+    }
+    if (this.product_depth_cm > 0) {
+      sps.metafields.push({
+        key: "product_depth_cm",
+        namespace: "custom",
+        value: this.product_width_cm.toString(),
+      })
+    }
     sps.variants = []
     let variant = new ShopifyVariant()
     //TODO: handle multiple variants
@@ -139,12 +161,9 @@ export class Product {
     if (this.compare_at_price > 0) {
       variant.compareAtPrice = this.compare_at_price
     }
-    variant.nodes = []
-    let variantWeight = new ShopifyProductVariant()
     if (this.weight_grams > 0) {
-      variantWeight.weight = this.weight_grams
-      variantWeight.weight_unit = "GRAMS"
-      variant.nodes.push(variantWeight)
+      variant.inventory_item.measurement.weight.value = this.weight_grams
+      variant.inventory_item.measurement.weight.unit = shopify.WeightUnit.GRAMS
     }
     sps.variants.push(variant)
     console.log("ToShopifyProductSet:\n" + JSON.stringify(sps, null, 2))

src/shopifyApi.ts

@@ -890,6 +890,8 @@ export class ShopifyVariant {
   compareAtPrice?: number
   barcode?: string
   position?: number
+  metafields?: shopify.Metafield[]
+  inventory_item?: shopify.InventoryItemInput
   nodes?: ShopifyProductVariant[]
   //TODO: support multiple options
   optionValues: [{}] = [
@@ -1016,6 +1018,7 @@ export class ShopifyProductSetInput {
   title: string
   vendor: string
   variants: ShopifyVariant[]
+  metafields: shopify.MetafieldInput[]
   //TODO: Support multiple product options
   productOptions: [{}] = [
     {