message: feat: add MerchantMetafield extension point
diff: @@ -13,6 +13,7 @@ export enum ExtensionPoint {
  AppLink = 'AppLink',
  Playground = 'Playground',
  SubscriptionManagement = 'SubscriptionManagement',
  + MerchantMetafield = 'MerchantMetafield',
  }
  type DataInput = {
  @@ -28,6 +29,7 @@ export interface ExtensionInput {
  [ExtensionPoint.AppLink]: StandardInput;
  [ExtensionPoint.Playground]: StandardInput;
  [ExtensionPoint.SubscriptionManagement]: SubscriptionInput;
  + [ExtensionPoint.MerchantMetafield]: StandardInput;
  }
  export type ExtensionResult = {} | void;
  @@ -44,4 +46,5 @@ export interface ExtensionPointCallback {
  SubscriptionInput,
  RemoteRoot<any>
  >;
  + [ExtensionPoint.MerchantMetafield]: RenderableExtensionCallback<StandardInput, RemoteRoot<any>>;
  }
  