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std/encoding/_yaml/type/undefined.ts

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// Ported and adapted from js-yaml-js-types v1.0.0:// https://github.com/nodeca/js-yaml-js-types/tree/ac537e7bbdd3c2cbbd9882ca3919c520c2dc022b// Copyright 2011-2015 by Vitaly Puzrin. All rights reserved. MIT license.// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
import { Type } from "../type.ts";
export const undefinedType = new Type("tag:yaml.org,2002:js/undefined", {  kind: "scalar",  resolve() {    return true;  },  construct() {    return undefined;  },  predicate(object) {    return typeof object === "undefined";  },  represent() {    return "";  },});