// Ported from js-yaml v3.13.1:
// https://github.com/nodeca/js-yaml/commit/665aadda42349dcae869f12040d9b10ef18d12da
// Copyright 2011-2015 by Vitaly Puzrin. All rights reserved. MIT license.
// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.

import { Type } from "../type.ts";

function resolveYamlMerge(data: string): boolean {
  return data === "<<" || data === null;
}

export const merge = new Type("tag:yaml.org,2002:merge", {
  kind: "scalar",
  resolve: resolveYamlMerge,
});
