aws-cdk-lib/node_modules/yaml/browser/dist/resolveSeq-492ab440.js

Version 2 of the AWS Cloud Development Kit library

import { c as _classCallCheck, j as _inherits, k as _createSuper, b as _createClass, e as _defineProperty, p as _assertThisInitialized, a as _typeof, q as _toArray, T as Type, _ as _createForOfIteratorHelper, l as _get, m as _getPrototypeOf, o as YAMLReferenceError, r as _possibleConstructorReturn, h as _slicedToArray, g as YAMLSemanticError, n as defaultTags, f as YAMLWarning, C as Char, Y as YAMLSyntaxError, P as PlainValue } from './PlainValue-b8036b75.js';

function addCommentBefore(str, indent, comment) {
  if (!comment) return str;
  var cc = comment.replace(/[\s\S]^/gm, "$&".concat(indent, "#"));
  return "#".concat(cc, "\n").concat(indent).concat(str);
}
function addComment(str, indent, comment) {
  return !comment ? str : comment.indexOf('\n') === -1 ? "".concat(str, " #").concat(comment) : "".concat(str, "\n") + comment.replace(/^/gm, "".concat(indent || '', "#"));
}

var Node = function Node() {
  _classCallCheck(this, Node);
};

function toJSON(value, arg, ctx) {
  if (Array.isArray(value)) return value.map(function (v, i) {
    return toJSON(v, String(i), ctx);
  });

  if (value && typeof value.toJSON === 'function') {
    var anchor = ctx && ctx.anchors && ctx.anchors.get(value);
    if (anchor) ctx.onCreate = function (res) {
      anchor.res = res;
      delete ctx.onCreate;
    };
    var res = value.toJSON(arg, ctx);
    if (anchor && ctx.onCreate) ctx.onCreate(res);
    return res;
  }

  if ((!ctx || !ctx.keep) && typeof value === 'bigint') return Number(value);
  return value;
}

var Scalar = /*#__PURE__*/function (_Node) {
  _inherits(Scalar, _Node);

  var _super = _createSuper(Scalar);

  function Scalar(value) {
    var _this;

    _classCallCheck(this, Scalar);

    _this = _super.call(this);
    _this.value = value;
    return _this;
  }

  _createClass(Scalar, [{
    key: "toJSON",
    value: function toJSON$1(arg, ctx) {
      return ctx && ctx.keep ? this.value : toJSON(this.value, arg, ctx);
    }
  }, {
    key: "toString",
    value: function toString() {
      return String(this.value);
    }
  }]);

  return Scalar;
}(Node);

function collectionFromPath(schema, path, value) {
  var v = value;

  for (var i = path.length - 1; i >= 0; --i) {
    var k = path[i];

    if (Number.isInteger(k) && k >= 0) {
      var a = [];
      a[k] = v;
      v = a;
    } else {
      var o = {};
      Object.defineProperty(o, k, {
        value: v,
        writable: true,
        enumerable: true,
        configurable: true
      });
      v = o;
    }
  }

  return schema.createNode(v, false);
} // null, undefined, or an empty non-string iterable (e.g. [])


var isEmptyPath = function isEmptyPath(path) {
  return path == null || _typeof(path) === 'object' && path[Symbol.iterator]().next().done;
};
var Collection = /*#__PURE__*/function (_Node) {
  _inherits(Collection, _Node);

  var _super = _createSuper(Collection);

  function Collection(schema) {
    var _this;

    _classCallCheck(this, Collection);

    _this = _super.call(this);

    _defineProperty(_assertThisInitialized(_this), "items", []);

    _this.schema = schema;
    return _this;
  }

  _createClass(Collection, [{
    key: "addIn",
    value: function addIn(path, value) {
      if (isEmptyPath(path)) this.add(value);else {
        var _path = _toArray(path),
            key = _path[0],
            rest = _path.slice(1);

        var node = this.get(key, true);
        if (node instanceof Collection) node.addIn(rest, value);else if (node === undefined && this.schema) this.set(key, collectionFromPath(this.schema, rest, value));else throw new Error("Expected YAML collection at ".concat(key, ". Remaining path: ").concat(rest));
      }
    }
  }, {
    key: "deleteIn",
    value: function deleteIn(_ref) {
      var _ref2 = _toArray(_ref),
          key = _ref2[0],
          rest = _ref2.slice(1);

      if (rest.length === 0) return this.delete(key);
      var node = this.get(key, true);
      if (node instanceof Collection) return node.deleteIn(rest);else throw new Error("Expected YAML collection at ".concat(key, ". Remaining path: ").concat(rest));
    }
  }, {
    key: "getIn",
    value: function getIn(_ref3, keepScalar) {
      var _ref4 = _toArray(_ref3),
          key = _ref4[0],
          rest = _ref4.slice(1);

      var node = this.get(key, true);
      if (rest.length === 0) return !keepScalar && node instanceof Scalar ? node.value : node;else return node instanceof Collection ? node.getIn(rest, keepScalar) : undefined;
    }
  }, {
    key: "hasAllNullValues",
    value: function hasAllNullValues() {
      return this.items.every(function (node) {
        if (!node || node.type !== 'PAIR') return false;
        var n = node.value;
        return n == null || n instanceof Scalar && n.value == null && !n.commentBefore && !n.comment && !n.tag;
      });
    }
  }, {
    key: "hasIn",
    value: function hasIn(_ref5) {
      var _ref6 = _toArray(_ref5),
          key = _ref6[0],
          rest = _ref6.slice(1);

      if (rest.length === 0) return this.has(key);
      var node = this.get(key, true);
      return node instanceof Collection ? node.hasIn(rest) : false;
    }
  }, {
    key: "setIn",
    value: function setIn(_ref7, value) {
      var _ref8 = _toArray(_ref7),
          key = _ref8[0],
          rest = _ref8.slice(1);

      if (rest.length === 0) {
        this.set(key, value);
      } else {
        var node = this.get(key, true);
        if (node instanceof Collection) node.setIn(rest, value);else if (node === undefined && this.schema) this.set(key, collectionFromPath(this.schema, rest, value));else throw new Error("Expected YAML collection at ".concat(key, ". Remaining path: ").concat(rest));
      }
    } // overridden in implementations

    /* istanbul ignore next */

  }, {
    key: "toJSON",
    value: function toJSON() {
      return null;
    }
  }, {
    key: "toString",
    value: function toString(ctx, _ref9, onComment, onChompKeep) {
      var _this2 = this;

      var blockItem = _ref9.blockItem,
          flowChars = _ref9.flowChars,
          isMap = _ref9.isMap,
          itemIndent = _ref9.itemIndent;
      var _ctx = ctx,
          indent = _ctx.indent,
          indentStep = _ctx.indentStep,
          stringify = _ctx.stringify;
      var inFlow = this.type === Type.FLOW_MAP || this.type === Type.FLOW_SEQ || ctx.inFlow;
      if (inFlow) itemIndent += indentStep;
      var allNullValues = isMap && this.hasAllNullValues();
      ctx = Object.assign({}, ctx, {
        allNullValues: allNullValues,
        indent: itemIndent,
        inFlow: inFlow,
        type: null
      });
      var chompKeep = false;
      var hasItemWithNewLine = false;
      var nodes = this.items.reduce(function (nodes, item, i) {
        var comment;

        if (item) {
          if (!chompKeep && item.spaceBefore) nodes.push({
            type: 'comment',
            str: ''
          });
          if (item.commentBefore) item.commentBefore.match(/^.*$/gm).forEach(function (line) {
            nodes.push({
              type: 'comment',
              str: "#".concat(line)
            });
          });
          if (item.comment) comment = item.comment;
          if (inFlow && (!chompKeep && item.spaceBefore || item.commentBefore || item.comment || item.key && (item.key.commentBefore || item.key.comment) || item.value && (item.value.commentBefore || item.value.comment))) hasItemWithNewLine = true;
        }

        chompKeep = false;
        var str = stringify(item, ctx, function () {
          return comment = null;
        }, function () {
          return chompKeep = true;
        });
        if (inFlow && !hasItemWithNewLine && str.includes('\n')) hasItemWithNewLine = true;
        if (inFlow && i < _this2.items.length - 1) str += ',';
        str = addComment(str, itemIndent, comment);
        if (chompKeep && (comment || inFlow)) chompKeep = false;
        nodes.push({
          type: 'item',
          str: str
        });
        return nodes;
      }, []);
      var str;

      if (nodes.length === 0) {
        str = flowChars.start + flowChars.end;
      } else if (inFlow) {
        var start = flowChars.start,
            end = flowChars.end;
        var strings = nodes.map(function (n) {
          return n.str;
        });

        if (hasItemWithNewLine || strings.reduce(function (sum, str) {
          return sum + str.length + 2;
        }, 2) > Collection.maxFlowStringSingleLineLength) {
          str = start;

          var _iterator = _createForOfIteratorHelper(strings),
              _step;

          try {
            for (_iterator.s(); !(_step = _iterator.n()).done;) {
              var s = _step.value;
              str += s ? "\n".concat(indentStep).concat(indent).concat(s) : '\n';
            }
          } catch (err) {
            _iterator.e(err);
          } finally {
            _iterator.f();
          }

          str += "\n".concat(indent).concat(end);
        } else {
          str = "".concat(start, " ").concat(strings.join(' '), " ").concat(end);
        }
      } else {
        var _strings = nodes.map(blockItem);

        str = _strings.shift();

        var _iterator2 = _createForOfIteratorHelper(_strings),
            _step2;

        try {
          for (_iterator2.s(); !(_step2 = _iterator2.n()).done;) {
            var _s = _step2.value;
            str += _s ? "\n".concat(indent).concat(_s) : '\n';
          }
        } catch (err) {
          _iterator2.e(err);
        } finally {
          _iterator2.f();
        }
      }

      if (this.comment) {
        str += '\n' + this.comment.replace(/^/gm, "".concat(indent, "#"));
        if (onComment) onComment();
      } else if (chompKeep && onChompKeep) onChompKeep();

      return str;
    }
  }]);

  return Collection;
}(Node);

_defineProperty(Collection, "maxFlowStringSingleLineLength", 60);

function asItemIndex(key) {
  var idx = key instanceof Scalar ? key.value : key;
  if (idx && typeof idx === 'string') idx = Number(idx);
  return Number.isInteger(idx) && idx >= 0 ? idx : null;
}

var YAMLSeq = /*#__PURE__*/function (_Collection) {
  _inherits(YAMLSeq, _Collection);

  var _super = _createSuper(YAMLSeq);

  function YAMLSeq() {
    _classCallCheck(this, YAMLSeq);

    return _super.apply(this, arguments);
  }

  _createClass(YAMLSeq, [{
    key: "add",
    value: function add(value) {
      this.items.push(value);
    }
  }, {
    key: "delete",
    value: function _delete(key) {
      var idx = asItemIndex(key);
      if (typeof idx !== 'number') return false;
      var del = this.items.splice(idx, 1);
      return del.length > 0;
    }
  }, {
    key: "get",
    value: function get(key, keepScalar) {
      var idx = asItemIndex(key);
      if (typeof idx !== 'number') return undefined;
      var it = this.items[idx];
      return !keepScalar && it instanceof Scalar ? it.value : it;
    }
  }, {
    key: "has",
    value: function has(key) {
      var idx = asItemIndex(key);
      return typeof idx === 'number' && idx < this.items.length;
    }
  }, {
    key: "set",
    value: function set(key, value) {
      var idx = asItemIndex(key);
      if (typeof idx !== 'number') throw new Error("Expected a valid index, not ".concat(key, "."));
      this.items[idx] = value;
    }
  }, {
    key: "toJSON",
    value: function toJSON$1(_, ctx) {
      var seq = [];
      if (ctx && ctx.onCreate) ctx.onCreate(seq);
      var i = 0;

      var _iterator = _createForOfIteratorHelper(this.items),
          _step;

      try {
        for (_iterator.s(); !(_step = _iterator.n()).done;) {
          var item = _step.value;
          seq.push(toJSON(item, String(i++), ctx));
        }
      } catch (err) {
        _iterator.e(err);
      } finally {
        _iterator.f();
      }

      return seq;
    }
  }, {
    key: "toString",
    value: function toString(ctx, onComment, onChompKeep) {
      if (!ctx) return JSON.stringify(this);
      return _get(_getPrototypeOf(YAMLSeq.prototype), "toString", this).call(this, ctx, {
        blockItem: function blockItem(n) {
          return n.type === 'comment' ? n.str : "- ".concat(n.str);
        },
        flowChars: {
          start: '[',
          end: ']'
        },
        isMap: false,
        itemIndent: (ctx.indent || '') + '  '
      }, onComment, onChompKeep);
    }
  }]);

  return YAMLSeq;
}(Collection);

var stringifyKey = function stringifyKey(key, jsKey, ctx) {
  if (jsKey === null) return '';
  if (_typeof(jsKey) !== 'object') return String(jsKey);
  if (key instanceof Node && ctx && ctx.doc) return key.toString({
    anchors: Object.create(null),
    doc: ctx.doc,
    indent: '',
    indentStep: ctx.indentStep,
    inFlow: true,
    inStringifyKey: true,
    stringify: ctx.stringify
  });
  return JSON.stringify(jsKey);
};

var Pair = /*#__PURE__*/function (_Node) {
  _inherits(Pair, _Node);

  var _super = _createSuper(Pair);

  function Pair(key) {
    var _this;

    var value = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;

    _classCallCheck(this, Pair);

    _this = _super.call(this);
    _this.key = key;
    _this.value = value;
    _this.type = Pair.Type.PAIR;
    return _this;
  }

  _createClass(Pair, [{
    key: "commentBefore",
    get: function get() {
      return this.key instanceof Node ? this.key.commentBefore : undefined;
    },
    set: function set(cb) {
      if (this.key == null) this.key = new Scalar(null);
      if (this.key instanceof Node) this.key.commentBefore = cb;else {
        var msg = 'Pair.commentBefore is an alias for Pair.key.commentBefore. To set it, the key must be a Node.';
        throw new Error(msg);
      }
    }
  }, {
    key: "addToJSMap",
    value: function addToJSMap(ctx, map) {
      var key = toJSON(this.key, '', ctx);

      if (map instanceof Map) {
        var value = toJSON(this.value, key, ctx);
        map.set(key, value);
      } else if (map instanceof Set) {
        map.add(key);
      } else {
        var stringKey = stringifyKey(this.key, key, ctx);

        var _value = toJSON(this.value, stringKey, ctx);

        if (stringKey in map) Object.defineProperty(map, stringKey, {
          value: _value,
          writable: true,
          enumerable: true,
          configurable: true
        });else map[stringKey] = _value;
      }

      return map;
    }
  }, {
    key: "toJSON",
    value: function toJSON(_, ctx) {
      var pair = ctx && ctx.mapAsMap ? new Map() : {};
      return this.addToJSMap(ctx, pair);
    }
  }, {
    key: "toString",
    value: function toString(ctx, onComment, onChompKeep) {
      if (!ctx || !ctx.doc) return JSON.stringify(this);
      var _ctx$doc$options = ctx.doc.options,
          indentSize = _ctx$doc$options.indent,
          indentSeq = _ctx$doc$options.indentSeq,
          simpleKeys = _ctx$doc$options.simpleKeys;
      var key = this.key,
          value = this.value;
      var keyComment = key instanceof Node && key.comment;

      if (simpleKeys) {
        if (keyComment) {
          throw new Error('With simple keys, key nodes cannot have comments');
        }

        if (key instanceof Collection) {
          var msg = 'With simple keys, collection cannot be used as a key value';
          throw new Error(msg);
        }
      }

      var explicitKey = !simpleKeys && (!key || keyComment || (key instanceof Node ? key instanceof Collection || key.type === Type.BLOCK_FOLDED || key.type === Type.BLOCK_LITERAL : _typeof(key) === 'object'));
      var _ctx = ctx,
          doc = _ctx.doc,
          indent = _ctx.indent,
          indentStep = _ctx.indentStep,
          stringify = _ctx.stringify;
      ctx = Object.assign({}, ctx, {
        implicitKey: !explicitKey,
        indent: indent + indentStep
      });
      var chompKeep = false;
      var str = stringify(key, ctx, function () {
        return keyComment = null;
      }, function () {
        return chompKeep = true;
      });
      str = addComment(str, ctx.indent, keyComment);

      if (!explicitKey && str.length > 1024) {
        if (simpleKeys) throw new Error('With simple keys, single line scalar must not span more than 1024 characters');
        explicitKey = true;
      }

      if (ctx.allNullValues && !simpleKeys) {
        if (this.comment) {
          str = addComment(str, ctx.indent, this.comment);
          if (onComment) onComment();
        } else if (chompKeep && !keyComment && onChompKeep) onChompKeep();

        return ctx.inFlow && !explicitKey ? str : "? ".concat(str);
      }

      str = explicitKey ? "? ".concat(str, "\n").concat(indent, ":") : "".concat(str, ":");

      if (this.comment) {
        // expected (but not strictly required) to be a single-line comment
        str = addComment(str, ctx.indent, this.comment);
        if (onComment) onComment();
      }

      var vcb = '';
      var valueComment = null;

      if (value instanceof Node) {
        if (value.spaceBefore) vcb = '\n';

        if (value.commentBefore) {
          var cs = value.commentBefore.replace(/^/gm, "".concat(ctx.indent, "#"));
          vcb += "\n".concat(cs);
        }

        valueComment = value.comment;
      } else if (value && _typeof(value) === 'object') {
        value = doc.schema.createNode(value, true);
      }

      ctx.implicitKey = false;
      if (!explicitKey && !this.comment && value instanceof Scalar) ctx.indentAtStart = str.length + 1;
      chompKeep = false;

      if (!indentSeq && indentSize >= 2 && !ctx.inFlow && !explicitKey && value instanceof YAMLSeq && value.type !== Type.FLOW_SEQ && !value.tag && !doc.anchors.getName(value)) {
        // If indentSeq === false, consider '- ' as part of indentation where possible
        ctx.indent = ctx.indent.substr(2);
      }

      var valueStr = stringify(value, ctx, function () {
        return valueComment = null;
      }, function () {
        return chompKeep = true;
      });
      var ws = ' ';

      if (vcb || this.comment) {
        ws = "".concat(vcb, "\n").concat(ctx.indent);
      } else if (!explicitKey && value instanceof Collection) {
        var flow = valueStr[0] === '[' || valueStr[0] === '{';
        if (!flow || valueStr.includes('\n')) ws = "\n".concat(ctx.indent);
      } else if (valueStr[0] === '\n') ws = '';

      if (chompKeep && !valueComment && onChompKeep) onChompKeep();
      return addComment(str + ws + valueStr, ctx.indent, valueComment);
    }
  }]);

  return Pair;
}(Node);

_defineProperty(Pair, "Type", {
  PAIR: 'PAIR',
  MERGE_PAIR: 'MERGE_PAIR'
});

var getAliasCount = function getAliasCount(node, anchors) {
  if (node instanceof Alias) {
    var anchor = anchors.get(node.source);
    return anchor.count * anchor.aliasCount;
  } else if (node instanceof Collection) {
    var count = 0;

    var _iterator = _createForOfIteratorHelper(node.items),
        _step;

    try {
      for (_iterator.s(); !(_step = _iterator.n()).done;) {
        var item = _step.value;
        var c = getAliasCount(item, anchors);
        if (c > count) count = c;
      }
    } catch (err) {
      _iterator.e(err);
    } finally {
      _iterator.f();
    }

    return count;
  } else if (node instanceof Pair) {
    var kc = getAliasCount(node.key, anchors);
    var vc = getAliasCount(node.value, anchors);
    return Math.max(kc, vc);
  }

  return 1;
};

var Alias = /*#__PURE__*/function (_Node) {
  _inherits(Alias, _Node);

  var _super = _createSuper(Alias);

  function Alias(source) {
    var _this;

    _classCallCheck(this, Alias);

    _this = _super.call(this);
    _this.source = source;
    _this.type = Type.ALIAS;
    return _this;
  }

  _createClass(Alias, [{
    key: "tag",
    set: function set(t) {
      throw new Error('Alias nodes cannot have tags');
    }
  }, {
    key: "toJSON",
    value: function toJSON$1(arg, ctx) {
      if (!ctx) return toJSON(this.source, arg, ctx);
      var anchors = ctx.anchors,
          maxAliasCount = ctx.maxAliasCount;
      var anchor = anchors.get(this.source);
      /* istanbul ignore if */

      if (!anchor || anchor.res === undefined) {
        var msg = 'This should not happen: Alias anchor was not resolved?';
        if (this.cstNode) throw new YAMLReferenceError(this.cstNode, msg);else throw new ReferenceError(msg);
      }

      if (maxAliasCount >= 0) {
        anchor.count += 1;
        if (anchor.aliasCount === 0) anchor.aliasCount = getAliasCount(this.source, anchors);

        if (anchor.count * anchor.aliasCount > maxAliasCount) {
          var _msg = 'Excessive alias count indicates a resource exhaustion attack';
          if (this.cstNode) throw new YAMLReferenceError(this.cstNode, _msg);else throw new ReferenceError(_msg);
        }
      }

      return anchor.res;
    } // Only called when stringifying an alias mapping key while constructing
    // Object output.

  }, {
    key: "toString",
    value: function toString(ctx) {
      return Alias.stringify(this, ctx);
    }
  }], [{
    key: "stringify",
    value: function stringify(_ref, _ref2) {
      var range = _ref.range,
          source = _ref.source;
      var anchors = _ref2.anchors,
          doc = _ref2.doc,
          implicitKey = _ref2.implicitKey,
          inStringifyKey = _ref2.inStringifyKey;
      var anchor = Object.keys(anchors).find(function (a) {
        return anchors[a] === source;
      });
      if (!anchor && inStringifyKey) anchor = doc.anchors.getName(source) || doc.anchors.newName();
      if (anchor) return "*".concat(anchor).concat(implicitKey ? ' ' : '');
      var msg = doc.anchors.getName(source) ? 'Alias node must be after source node' : 'Source node not found for alias node';
      throw new Error("".concat(msg, " [").concat(range, "]"));
    }
  }]);

  return Alias;
}(Node);

_defineProperty(Alias, "default", true);

function findPair(items, key) {
  var k = key instanceof Scalar ? key.value : key;

  var _iterator = _createForOfIteratorHelper(items),
      _step;

  try {
    for (_iterator.s(); !(_step = _iterator.n()).done;) {
      var it = _step.value;

      if (it instanceof Pair) {
        if (it.key === key || it.key === k) return it;
        if (it.key && it.key.value === k) return it;
      }
    }
  } catch (err) {
    _iterator.e(err);
  } finally {
    _iterator.f();
  }

  return undefined;
}
var YAMLMap = /*#__PURE__*/function (_Collection) {
  _inherits(YAMLMap, _Collection);

  var _super = _createSuper(YAMLMap);

  function YAMLMap() {
    _classCallCheck(this, YAMLMap);

    return _super.apply(this, arguments);
  }

  _createClass(YAMLMap, [{
    key: "add",
    value: function add(pair, overwrite) {
      if (!pair) pair = new Pair(pair);else if (!(pair instanceof Pair)) pair = new Pair(pair.key || pair, pair.value);
      var prev = findPair(this.items, pair.key);
      var sortEntries = this.schema && this.schema.sortMapEntries;

      if (prev) {
        if (overwrite) prev.value = pair.value;else throw new Error("Key ".concat(pair.key, " already set"));
      } else if (sortEntries) {
        var i = this.items.findIndex(function (item) {
          return sortEntries(pair, item) < 0;
        });
        if (i === -1) this.items.push(pair);else this.items.splice(i, 0, pair);
      } else {
        this.items.push(pair);
      }
    }
  }, {
    key: "delete",
    value: function _delete(key) {
      var it = findPair(this.items, key);
      if (!it) return false;
      var del = this.items.splice(this.items.indexOf(it), 1);
      return del.length > 0;
    }
  }, {
    key: "get",
    value: function get(key, keepScalar) {
      var it = findPair(this.items, key);
      var node = it && it.value;
      return !keepScalar && node instanceof Scalar ? node.value : node;
    }
  }, {
    key: "has",
    value: function has(key) {
      return !!findPair(this.items, key);
    }
  }, {
    key: "set",
    value: function set(key, value) {
      this.add(new Pair(key, value), true);
    }
    /**
     * @param {*} arg ignored
     * @param {*} ctx Conversion context, originally set in Document#toJSON()
     * @param {Class} Type If set, forces the returned collection type
     * @returns {*} Instance of Type, Map, or Object
     */

  }, {
    key: "toJSON",
    value: function toJSON(_, ctx, Type) {
      var map = Type ? new Type() : ctx && ctx.mapAsMap ? new Map() : {};
      if (ctx && ctx.onCreate) ctx.onCreate(map);

      var _iterator2 = _createForOfIteratorHelper(this.items),
          _step2;

      try {
        for (_iterator2.s(); !(_step2 = _iterator2.n()).done;) {
          var item = _step2.value;
          item.addToJSMap(ctx, map);
        }
      } catch (err) {
        _iterator2.e(err);
      } finally {
        _iterator2.f();
      }

      return map;
    }
  }, {
    key: "toString",
    value: function toString(ctx, onComment, onChompKeep) {
      if (!ctx) return JSON.stringify(this);

      var _iterator3 = _createForOfIteratorHelper(this.items),
          _step3;

      try {
        for (_iterator3.s(); !(_step3 = _iterator3.n()).done;) {
          var item = _step3.value;
          if (!(item instanceof Pair)) throw new Error("Map items must all be pairs; found ".concat(JSON.stringify(item), " instead"));
        }
      } catch (err) {
        _iterator3.e(err);
      } finally {
        _iterator3.f();
      }

      return _get(_getPrototypeOf(YAMLMap.prototype), "toString", this).call(this, ctx, {
        blockItem: function blockItem(n) {
          return n.str;
        },
        flowChars: {
          start: '{',
          end: '}'
        },
        isMap: true,
        itemIndent: ctx.indent || ''
      }, onComment, onChompKeep);
    }
  }]);

  return YAMLMap;
}(Collection);

var MERGE_KEY = '<<';
var Merge = /*#__PURE__*/function (_Pair) {
  _inherits(Merge, _Pair);

  var _super = _createSuper(Merge);

  function Merge(pair) {
    var _this;

    _classCallCheck(this, Merge);

    if (pair instanceof Pair) {
      var seq = pair.value;

      if (!(seq instanceof YAMLSeq)) {
        seq = new YAMLSeq();
        seq.items.push(pair.value);
        seq.range = pair.value.range;
      }

      _this = _super.call(this, pair.key, seq);
      _this.range = pair.range;
    } else {
      _this = _super.call(this, new Scalar(MERGE_KEY), new YAMLSeq());
    }

    _this.type = Pair.Type.MERGE_PAIR;
    return _possibleConstructorReturn(_this);
  } // If the value associated with a merge key is a single mapping node, each of
  // its key/value pairs is inserted into the current mapping, unless the key
  // already exists in it. If the value associated with the merge key is a
  // sequence, then this sequence is expected to contain mapping nodes and each
  // of these nodes is merged in turn according to its order in the sequence.
  // Keys in mapping nodes earlier in the sequence override keys specified in
  // later mapping nodes. -- http://yaml.org/type/merge.html


  _createClass(Merge, [{
    key: "addToJSMap",
    value: function addToJSMap(ctx, map) {
      var _iterator = _createForOfIteratorHelper(this.value.items),
          _step;

      try {
        for (_iterator.s(); !(_step = _iterator.n()).done;) {
          var source = _step.value.source;
          if (!(source instanceof YAMLMap)) throw new Error('Merge sources must be maps');
          var srcMap = source.toJSON(null, ctx, Map);

          var _iterator2 = _createForOfIteratorHelper(srcMap),
              _step2;

          try {
            for (_iterator2.s(); !(_step2 = _iterator2.n()).done;) {
              var _step2$value = _slicedToArray(_step2.value, 2),
                  key = _step2$value[0],
                  value = _step2$value[1];

              if (map instanceof Map) {
                if (!map.has(key)) map.set(key, value);
              } else if (map instanceof Set) {
                map.add(key);
              } else if (!Object.prototype.hasOwnProperty.call(map, key)) {
                Object.defineProperty(map, key, {
                  value: value,
                  writable: true,
                  enumerable: true,
                  configurable: true
                });
              }
            }
          } catch (err) {
            _iterator2.e(err);
          } finally {
            _iterator2.f();
          }
        }
      } catch (err) {
        _iterator.e(err);
      } finally {
        _iterator.f();
      }

      return map;
    }
  }, {
    key: "toString",
    value: function toString(ctx, onComment) {
      var seq = this.value;
      if (seq.items.length > 1) return _get(_getPrototypeOf(Merge.prototype), "toString", this).call(this, ctx, onComment);
      this.value = seq.items[0];

      var str = _get(_getPrototypeOf(Merge.prototype), "toString", this).call(this, ctx, onComment);

      this.value = seq;
      return str;
    }
  }]);

  return Merge;
}(Pair);

var binaryOptions = {
  defaultType: Type.BLOCK_LITERAL,
  lineWidth: 76
};
var boolOptions = {
  trueStr: 'true',
  falseStr: 'false'
};
var intOptions = {
  asBigInt: false
};
var nullOptions = {
  nullStr: 'null'
};
var strOptions = {
  defaultType: Type.PLAIN,
  doubleQuoted: {
    jsonEncoding: false,
    minMultiLineLength: 40
  },
  fold: {
    lineWidth: 80,
    minContentWidth: 20
  }
};

function resolveScalar(str, tags, scalarFallback) {
  var _iterator = _createForOfIteratorHelper(tags),
      _step;

  try {
    for (_iterator.s(); !(_step = _iterator.n()).done;) {
      var _step$value = _step.value,
          format = _step$value.format,
          test = _step$value.test,
          resolve = _step$value.resolve;

      if (test) {
        var match = str.match(test);

        if (match) {
          var res = resolve.apply(null, match);
          if (!(res instanceof Scalar)) res = new Scalar(res);
          if (format) res.format = format;
          return res;
        }
      }
    }
  } catch (err) {
    _iterator.e(err);
  } finally {
    _iterator.f();
  }

  if (scalarFallback) str = scalarFallback(str);
  return new Scalar(str);
}

var FOLD_FLOW = 'flow';
var FOLD_BLOCK = 'block';
var FOLD_QUOTED = 'quoted'; // presumes i+1 is at the start of a line
// returns index of last newline in more-indented block

var consumeMoreIndentedLines = function consumeMoreIndentedLines(text, i) {
  var ch = text[i + 1];

  while (ch === ' ' || ch === '\t') {
    do {
      ch = text[i += 1];
    } while (ch && ch !== '\n');

    ch = text[i + 1];
  }

  return i;
};
/**
 * Tries to keep input at up to `lineWidth` characters, splitting only on spaces
 * not followed by newlines or spaces unless `mode` is `'quoted'`. Lines are
 * terminated with `\n` and started with `indent`.
 *
 * @param {string} text
 * @param {string} indent
 * @param {string} [mode='flow'] `'block'` prevents more-indented lines
 *   from being folded; `'quoted'` allows for `\` escapes, including escaped
 *   newlines
 * @param {Object} options
 * @param {number} [options.indentAtStart] Accounts for leading contents on
 *   the first line, defaulting to `indent.length`
 * @param {number} [options.lineWidth=80]
 * @param {number} [options.minContentWidth=20] Allow highly indented lines to
 *   stretch the line width or indent content from the start
 * @param {function} options.onFold Called once if the text is folded
 * @param {function} options.onFold Called once if any line of text exceeds
 *   lineWidth characters
 */


function foldFlowLines(text, indent, mode, _ref) {
  var indentAtStart = _ref.indentAtStart,
      _ref$lineWidth = _ref.lineWidth,
      lineWidth = _ref$lineWidth === void 0 ? 80 : _ref$lineWidth,
      _ref$minContentWidth = _ref.minContentWidth,
      minContentWidth = _ref$minContentWidth === void 0 ? 20 : _ref$minContentWidth,
      onFold = _ref.onFold,
      onOverflow = _ref.onOverflow;
  if (!lineWidth || lineWidth < 0) return text;
  var endStep = Math.max(1 + minContentWidth, 1 + lineWidth - indent.length);
  if (text.length <= endStep) return text;
  var folds = [];
  var escapedFolds = {};
  var end = lineWidth - indent.length;

  if (typeof indentAtStart === 'number') {
    if (indentAtStart > lineWidth - Math.max(2, minContentWidth)) folds.push(0);else end = lineWidth - indentAtStart;
  }

  var split = undefined;
  var prev = undefined;
  var overflow = false;
  var i = -1;
  var escStart = -1;
  var escEnd = -1;

  if (mode === FOLD_BLOCK) {
    i = consumeMoreIndentedLines(text, i);
    if (i !== -1) end = i + endStep;
  }

  for (var ch; ch = text[i += 1];) {
    if (mode === FOLD_QUOTED && ch === '\\') {
      escStart = i;

      switch (text[i + 1]) {
        case 'x':
          i += 3;
          break;

        case 'u':
          i += 5;
          break;

        case 'U':
          i += 9;
          break;

        default:
          i += 1;
      }

      escEnd = i;
    }

    if (ch === '\n') {
      if (mode === FOLD_BLOCK) i = consumeMoreIndentedLines(text, i);
      end = i + endStep;
      split = undefined;
    } else {
      if (ch === ' ' && prev && prev !== ' ' && prev !== '\n' && prev !== '\t') {
        // space surrounded by non-space can be replaced with newline + indent
        var next = text[i + 1];
        if (next && next !== ' ' && next !== '\n' && next !== '\t') split = i;
      }

      if (i >= end) {
        if (split) {
          folds.push(split);
          end = split + endStep;
          split = undefined;
        } else if (mode === FOLD_QUOTED) {
          // white-space collected at end may stretch past lineWidth
          while (prev === ' ' || prev === '\t') {
            prev = ch;
            ch = text[i += 1];
            overflow = true;
          } // Account for newline escape, but don't break preceding escape


          var j = i > escEnd + 1 ? i - 2 : escStart - 1; // Bail out if lineWidth & minContentWidth are shorter than an escape string

          if (escapedFolds[j]) return text;
          folds.push(j);
          escapedFolds[j] = true;
          end = j + endStep;
          split = undefined;
        } else {
          overflow = true;
        }
      }
    }

    prev = ch;
  }

  if (overflow && onOverflow) onOverflow();
  if (folds.length === 0) return text;
  if (onFold) onFold();
  var res = text.slice(0, folds[0]);

  for (var _i = 0; _i < folds.length; ++_i) {
    var fold = folds[_i];

    var _end = folds[_i + 1] || text.length;

    if (fold === 0) res = "\n".concat(indent).concat(text.slice(0, _end));else {
      if (mode === FOLD_QUOTED && escapedFolds[fold]) res += "".concat(text[fold], "\\");
      res += "\n".concat(indent).concat(text.slice(fold + 1, _end));
    }
  }

  return res;
}

var getFoldOptions = function getFoldOptions(_ref) {
  var indentAtStart = _ref.indentAtStart;
  return indentAtStart ? Object.assign({
    indentAtStart: indentAtStart
  }, strOptions.fold) : strOptions.fold;
}; // Also checks for lines starting with %, as parsing the output as YAML 1.1 will
// presume that's starting a new document.


var containsDocumentMarker = function containsDocumentMarker(str) {
  return /^(%|---|\.\.\.)/m.test(str);
};

function lineLengthOverLimit(str, lineWidth, indentLength) {
  if (!lineWidth || lineWidth < 0) return false;
  var limit = lineWidth - indentLength;
  var strLen = str.length;
  if (strLen <= limit) return false;

  for (var i = 0, start = 0; i < strLen; ++i) {
    if (str[i] === '\n') {
      if (i - start > limit) return true;
      start = i + 1;
      if (strLen - start <= limit) return false;
    }
  }

  return true;
}

function doubleQuotedString(value, ctx) {
  var implicitKey = ctx.implicitKey;
  var _strOptions$doubleQuo = strOptions.doubleQuoted,
      jsonEncoding = _strOptions$doubleQuo.jsonEncoding,
      minMultiLineLength = _strOptions$doubleQuo.minMultiLineLength;
  var json = JSON.stringify(value);
  if (jsonEncoding) return json;
  var indent = ctx.indent || (containsDocumentMarker(value) ? '  ' : '');
  var str = '';
  var start = 0;

  for (var i = 0, ch = json[i]; ch; ch = json[++i]) {
    if (ch === ' ' && json[i + 1] === '\\' && json[i + 2] === 'n') {
      // space before newline needs to be escaped to not be folded
      str += json.slice(start, i) + '\\ ';
      i += 1;
      start = i;
      ch = '\\';
    }

    if (ch === '\\') switch (json[i + 1]) {
      case 'u':
        {
          str += json.slice(start, i);
          var code = json.substr(i + 2, 4);

          switch (code) {
            case '0000':
              str += '\\0';
              break;

            case '0007':
              str += '\\a';
              break;

            case '000b':
              str += '\\v';
              break;

            case '001b':
              str += '\\e';
              break;

            case '0085':
              str += '\\N';
              break;

            case '00a0':
              str += '\\_';
              break;

            case '2028':
              str += '\\L';
              break;

            case '2029':
              str += '\\P';
              break;

            default:
              if (code.substr(0, 2) === '00') str += '\\x' + code.substr(2);else str += json.substr(i, 6);
          }

          i += 5;
          start = i + 1;
        }
        break;

      case 'n':
        if (implicitKey || json[i + 2] === '"' || json.length < minMultiLineLength) {
          i += 1;
        } else {
          // folding will eat first newline
          str += json.slice(start, i) + '\n\n';

          while (json[i + 2] === '\\' && json[i + 3] === 'n' && json[i + 4] !== '"') {
            str += '\n';
            i += 2;
          }

          str += indent; // space after newline needs to be escaped to not be folded

          if (json[i + 2] === ' ') str += '\\';
          i += 1;
          start = i + 1;
        }

        break;

      default:
        i += 1;
    }
  }

  str = start ? str + json.slice(start) : json;
  return implicitKey ? str : foldFlowLines(str, indent, FOLD_QUOTED, getFoldOptions(ctx));
}

function singleQuotedString(value, ctx) {
  if (ctx.implicitKey) {
    if (/\n/.test(value)) return doubleQuotedString(value, ctx);
  } else {
    // single quoted string can't have leading or trailing whitespace around newline
    if (/[ \t]\n|\n[ \t]/.test(value)) return doubleQuotedString(value, ctx);
  }

  var indent = ctx.indent || (containsDocumentMarker(value) ? '  ' : '');
  var res = "'" + value.replace(/'/g, "''").replace(/\n+/g, "$&\n".concat(indent)) + "'";
  return ctx.implicitKey ? res : foldFlowLines(res, indent, FOLD_FLOW, getFoldOptions(ctx));
}

function blockString(_ref2, ctx, onComment, onChompKeep) {
  var comment = _ref2.comment,
      type = _ref2.type,
      value = _ref2.value;

  // 1. Block can't end in whitespace unless the last line is non-empty.
  // 2. Strings consisting of only whitespace are best rendered explicitly.
  if (/\n[\t ]+$/.test(value) || /^\s*$/.test(value)) {
    return doubleQuotedString(value, ctx);
  }

  var indent = ctx.indent || (ctx.forceBlockIndent || containsDocumentMarker(value) ? '  ' : '');
  var indentSize = indent ? '2' : '1'; // root is at -1

  var literal = type === Type.BLOCK_FOLDED ? false : type === Type.BLOCK_LITERAL ? true : !lineLengthOverLimit(value, strOptions.fold.lineWidth, indent.length);
  var header = literal ? '|' : '>';
  if (!value) return header + '\n';
  var wsStart = '';
  var wsEnd = '';
  value = value.replace(/[\n\t ]*$/, function (ws) {
    var n = ws.indexOf('\n');

    if (n === -1) {
      header += '-'; // strip
    } else if (value === ws || n !== ws.length - 1) {
      header += '+'; // keep

      if (onChompKeep) onChompKeep();
    }

    wsEnd = ws.replace(/\n$/, '');
    return '';
  }).replace(/^[\n ]*/, function (ws) {
    if (ws.indexOf(' ') !== -1) header += indentSize;
    var m = ws.match(/ +$/);

    if (m) {
      wsStart = ws.slice(0, -m[0].length);
      return m[0];
    } else {
      wsStart = ws;
      return '';
    }
  });
  if (wsEnd) wsEnd = wsEnd.replace(/\n+(?!\n|$)/g, "$&".concat(indent));
  if (wsStart) wsStart = wsStart.replace(/\n+/g, "$&".concat(indent));

  if (comment) {
    header += ' #' + comment.replace(/ ?[\r\n]+/g, ' ');
    if (onComment) onComment();
  }

  if (!value) return "".concat(header).concat(indentSize, "\n").concat(indent).concat(wsEnd);

  if (literal) {
    value = value.replace(/\n+/g, "$&".concat(indent));
    return "".concat(header, "\n").concat(indent).concat(wsStart).concat(value).concat(wsEnd);
  }

  value = value.replace(/\n+/g, '\n$&').replace(/(?:^|\n)([\t ].*)(?:([\n\t ]*)\n(?![\n\t ]))?/g, '$1$2') // more-indented lines aren't folded
  //         ^ ind.line  ^ empty     ^ capture next empty lines only at end of indent
  .replace(/\n+/g, "$&".concat(indent));
  var body = foldFlowLines("".concat(wsStart).concat(value).concat(wsEnd), indent, FOLD_BLOCK, strOptions.fold);
  return "".concat(header, "\n").concat(indent).concat(body);
}

function plainString(item, ctx, onComment, onChompKeep) {
  var comment = item.comment,
      type = item.type,
      value = item.value;
  var actualString = ctx.actualString,
      implicitKey = ctx.implicitKey,
      indent = ctx.indent,
      inFlow = ctx.inFlow;

  if (implicitKey && /[\n[\]{},]/.test(value) || inFlow && /[[\]{},]/.test(value)) {
    return doubleQuotedString(value, ctx);
  }

  if (!value || /^[\n\t ,[\]{}#&*!|>'"%@`]|^[?-]$|^[?-][ \t]|[\n:][ \t]|[ \t]\n|[\n\t ]#|[\n\t :]$/.test(value)) {
    // not allowed:
    // - empty string, '-' or '?'
    // - start with an indicator character (except [?:-]) or /[?-] /
    // - '\n ', ': ' or ' \n' anywhere
    // - '#' not preceded by a non-space char
    // - end with ' ' or ':'
    return implicitKey || inFlow || value.indexOf('\n') === -1 ? value.indexOf('"') !== -1 && value.indexOf("'") === -1 ? singleQuotedString(value, ctx) : doubleQuotedString(value, ctx) : blockString(item, ctx, onComment, onChompKeep);
  }

  if (!implicitKey && !inFlow && type !== Type.PLAIN && value.indexOf('\n') !== -1) {
    // Where allowed & type not set explicitly, prefer block style for multiline strings
    return blockString(item, ctx, onComment, onChompKeep);
  }

  if (indent === '' && containsDocumentMarker(value)) {
    ctx.forceBlockIndent = true;
    return blockString(item, ctx, onComment, onChompKeep);
  }

  var str = value.replace(/\n+/g, "$&\n".concat(indent)); // Verify that output will be parsed as a string, as e.g. plain numbers and
  // booleans get parsed with those types in v1.2 (e.g. '42', 'true' & '0.9e-3'),
  // and others in v1.1.

  if (actualString) {
    var tags = ctx.doc.schema.tags;
    var resolved = resolveScalar(str, tags, tags.scalarFallback).value;
    if (typeof resolved !== 'string') return doubleQuotedString(value, ctx);
  }

  var body = implicitKey ? str : foldFlowLines(str, indent, FOLD_FLOW, getFoldOptions(ctx));

  if (comment && !inFlow && (body.indexOf('\n') !== -1 || comment.indexOf('\n') !== -1)) {
    if (onComment) onComment();
    return addCommentBefore(body, indent, comment);
  }

  return body;
}

function stringifyString(item, ctx, onComment, onChompKeep) {
  var defaultType = strOptions.defaultType;
  var implicitKey = ctx.implicitKey,
      inFlow = ctx.inFlow;
  var _item = item,
      type = _item.type,
      value = _item.value;

  if (typeof value !== 'string') {
    value = String(value);
    item = Object.assign({}, item, {
      value: value
    });
  }

  var _stringify = function _stringify(_type) {
    switch (_type) {
      case Type.BLOCK_FOLDED:
      case Type.BLOCK_LITERAL:
        return blockString(item, ctx, onComment, onChompKeep);

      case Type.QUOTE_DOUBLE:
        return doubleQuotedString(value, ctx);

      case Type.QUOTE_SINGLE:
        return singleQuotedString(value, ctx);

      case Type.PLAIN:
        return plainString(item, ctx, onComment, onChompKeep);

      default:
        return null;
    }
  };

  if (type !== Type.QUOTE_DOUBLE && /[\x00-\x08\x0b-\x1f\x7f-\x9f]/.test(value)) {
    // force double quotes on control characters
    type = Type.QUOTE_DOUBLE;
  } else if ((implicitKey || inFlow) && (type === Type.BLOCK_FOLDED || type === Type.BLOCK_LITERAL)) {
    // should not happen; blocks are not valid inside flow containers
    type = Type.QUOTE_DOUBLE;
  }

  var res = _stringify(type);

  if (res === null) {
    res = _stringify(defaultType);
    if (res === null) throw new Error("Unsupported default string type ".concat(defaultType));
  }

  return res;
}

function stringifyNumber(_ref) {
  var format = _ref.format,
      minFractionDigits = _ref.minFractionDigits,
      tag = _ref.tag,
      value = _ref.value;
  if (typeof value === 'bigint') return String(value);
  if (!isFinite(value)) return isNaN(value) ? '.nan' : value < 0 ? '-.inf' : '.inf';
  var n = JSON.stringify(value);

  if (!format && minFractionDigits && (!tag || tag === 'tag:yaml.org,2002:float') && /^\d/.test(n)) {
    var i = n.indexOf('.');

    if (i < 0) {
      i = n.length;
      n += '.';
    }

    var d = minFractionDigits - (n.length - i - 1);

    while (d-- > 0) {
      n += '0';
    }
  }

  return n;
}

function checkFlowCollectionEnd(errors, cst) {
  var char, name;

  switch (cst.type) {
    case Type.FLOW_MAP:
      char = '}';
      name = 'flow map';
      break;

    case Type.FLOW_SEQ:
      char = ']';
      name = 'flow sequence';
      break;

    default:
      errors.push(new YAMLSemanticError(cst, 'Not a flow collection!?'));
      return;
  }

  var lastItem;

  for (var i = cst.items.length - 1; i >= 0; --i) {
    var item = cst.items[i];

    if (!item || item.type !== Type.COMMENT) {
      lastItem = item;
      break;
    }
  }

  if (lastItem && lastItem.char !== char) {
    var msg = "Expected ".concat(name, " to end with ").concat(char);
    var err;

    if (typeof lastItem.offset === 'number') {
      err = new YAMLSemanticError(cst, msg);
      err.offset = lastItem.offset + 1;
    } else {
      err = new YAMLSemanticError(lastItem, msg);
      if (lastItem.range && lastItem.range.end) err.offset = lastItem.range.end - lastItem.range.start;
    }

    errors.push(err);
  }
}
function checkFlowCommentSpace(errors, comment) {
  var prev = comment.context.src[comment.range.start - 1];

  if (prev !== '\n' && prev !== '\t' && prev !== ' ') {
    var msg = 'Comments must be separated from other tokens by white space characters';
    errors.push(new YAMLSemanticError(comment, msg));
  }
}
function getLongKeyError(source, key) {
  var sk = String(key);
  var k = sk.substr(0, 8) + '...' + sk.substr(-8);
  return new YAMLSemanticError(source, "The \"".concat(k, "\" key is too long"));
}
function resolveComments(collection, comments) {
  var _iterator = _createForOfIteratorHelper(comments),
      _step;

  try {
    for (_iterator.s(); !(_step = _iterator.n()).done;) {
      var _step$value = _step.value,
          afterKey = _step$value.afterKey,
          before = _step$value.before,
          comment = _step$value.comment;
      var item = collection.items[before];

      if (!item) {
        if (comment !== undefined) {
          if (collection.comment) collection.comment += '\n' + comment;else collection.comment = comment;
        }
      } else {
        if (afterKey && item.value) item = item.value;

        if (comment === undefined) {
          if (afterKey || !item.commentBefore) item.spaceBefore = true;
        } else {
          if (item.commentBefore) item.commentBefore += '\n' + comment;else item.commentBefore = comment;
        }
      }
    }
  } catch (err) {
    _iterator.e(err);
  } finally {
    _iterator.f();
  }
}

// on error, will return { str: string, errors: Error[] }
function resolveString(doc, node) {
  var res = node.strValue;
  if (!res) return '';
  if (typeof res === 'string') return res;
  res.errors.forEach(function (error) {
    if (!error.source) error.source = node;
    doc.errors.push(error);
  });
  return res.str;
}

function resolveTagHandle(doc, node) {
  var _node$tag = node.tag,
      handle = _node$tag.handle,
      suffix = _node$tag.suffix;
  var prefix = doc.tagPrefixes.find(function (p) {
    return p.handle === handle;
  });

  if (!prefix) {
    var dtp = doc.getDefaults().tagPrefixes;
    if (dtp) prefix = dtp.find(function (p) {
      return p.handle === handle;
    });
    if (!prefix) throw new YAMLSemanticError(node, "The ".concat(handle, " tag handle is non-default and was not declared."));
  }

  if (!suffix) throw new YAMLSemanticError(node, "The ".concat(handle, " tag has no suffix."));

  if (handle === '!' && (doc.version || doc.options.version) === '1.0') {
    if (suffix[0] === '^') {
      doc.warnings.push(new YAMLWarning(node, 'YAML 1.0 ^ tag expansion is not supported'));
      return suffix;
    }

    if (/[:/]/.test(suffix)) {
      // word/foo -> tag:word.yaml.org,2002:foo
      var vocab = suffix.match(/^([a-z0-9-]+)\/(.*)/i);
      return vocab ? "tag:".concat(vocab[1], ".yaml.org,2002:").concat(vocab[2]) : "tag:".concat(suffix);
    }
  }

  return prefix.prefix + decodeURIComponent(suffix);
}

function resolveTagName(doc, node) {
  var tag = node.tag,
      type = node.type;
  var nonSpecific = false;

  if (tag) {
    var handle = tag.handle,
        suffix = tag.suffix,
        verbatim = tag.verbatim;

    if (verbatim) {
      if (verbatim !== '!' && verbatim !== '!!') return verbatim;
      var msg = "Verbatim tags aren't resolved, so ".concat(verbatim, " is invalid.");
      doc.errors.push(new YAMLSemanticError(node, msg));
    } else if (handle === '!' && !suffix) {
      nonSpecific = true;
    } else {
      try {
        return resolveTagHandle(doc, node);
      } catch (error) {
        doc.errors.push(error);
      }
    }
  }

  switch (type) {
    case Type.BLOCK_FOLDED:
    case Type.BLOCK_LITERAL:
    case Type.QUOTE_DOUBLE:
    case Type.QUOTE_SINGLE:
      return defaultTags.STR;

    case Type.FLOW_MAP:
    case Type.MAP:
      return defaultTags.MAP;