message: Non-nullable lists should be an Array type. Fixes
diff: @@ -194,6 +194,8 @@ export function propertyFromField(context, field, forceNullable) {
  let isArray = false;
  if (fieldType instanceof GraphQLList) {
  isArray = true;
  + } else if (fieldType instanceof GraphQLNonNull && fieldType.ofType instanceof GraphQLList) {
  + isArray = true
  }
  let isNullable = true;
  if (fieldType instanceof GraphQLNonNull && !forceNullable) {
  