I can update a row!

src/shopifyApi.ts

@@ -16,6 +16,8 @@
 /// <reference types="@types/google-apps-script" />
 
 import { Config } from "./config"
+import * as shopify from "shopify-admin-api-typings"
+import gql from 'graphql-tag'
 
 const ss = SpreadsheetApp.getActive()
 
@@ -731,7 +733,13 @@ export class ShopifyVariant {
   barcode?: string
   position?: number
   nodes?: ShopifyProductVariant[]
-  optionValues?: VariantOptionValueInput[]
+  //TODO: support multiple options
+  optionValues: [{}] = [
+    {
+      optionName: "Title",
+      name: "Default Title"
+    }
+  ]
 }
 
 class PageInfo {
@@ -802,7 +810,7 @@ export class ShopifyProductsResponse {
 }
 
 export class ShopifyProductSetQuery {
-  GQL: string = `mutation setProduct($productSet: ProductSetInput!) {
+  GQL = `mutation setProduct($productSet: ProductSetInput!) {
   productSet(input: $productSet) {
     product {
       id
@@ -826,7 +834,7 @@ export class ShopifyProductSetQuery {
   JSON: JSON
   constructor(product: ShopifyProductSetInput, synchronous: boolean = true) {
     let j = `{
-      "query": ${formatGqlForJSON(this.GQL)},
+      "query": ${formatGqlForJSON(String(this.GQL))},
       "variables": {
         "productSet": ${JSON.stringify(product)}
       }
@@ -847,7 +855,15 @@ export class ShopifyProductSetInput {
   title: string
   vendor: string
   variants: ShopifyVariant[]
-  productOptions: ShopifyProductOption[]
+  //TODO: Support multiple product options
+  productOptions: [{}] = [
+    {
+      name: "Title",
+      values: {
+        name: "Default Title"
+      }
+    }
+  ]
 }
 
 export class ProductVariantSetInput {