function _typeof(o) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) { return typeof o; } : function (o) { return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o; }, _typeof(o); }
/*! js-yaml 4.1.0 https://github.com/nodeca/js-yaml @license MIT */
function isNothing(subject) {
  return typeof subject === 'undefined' || subject === null;
}
function isObject(subject) {
  return _typeof(subject) === 'object' && subject !== null;
}
function toArray(sequence) {
  if (Array.isArray(sequence)) return sequence;else if (isNothing(sequence)) return [];
  return [sequence];
}
function extend(target, source) {
  var index, length, key, sourceKeys;
  if (source) {
    sourceKeys = Object.keys(source);
    for (index = 0, length = sourceKeys.length; index < length; index += 1) {
      key = sourceKeys[index];
      target[key] = source[key];
    }
  }
  return target;
}
function repeat(string, count) {
  var result = '',
    cycle;
  for (cycle = 0; cycle < count; cycle += 1) {
    result += string;
  }
  return result;
}
function isNegativeZero(number) {
  return number === 0 && Number.NEGATIVE_INFINITY === 1 / number;
}
var isNothing_1 = isNothing;
var isObject_1 = isObject;
var toArray_1 = toArray;
var repeat_1 = repeat;
var isNegativeZero_1 = isNegativeZero;
var extend_1 = extend;
var common = {
  isNothing: isNothing_1,
  isObject: isObject_1,
  toArray: toArray_1,
  repeat: repeat_1,
  isNegativeZero: isNegativeZero_1,
  extend: extend_1
};
function formatError(exception, compact) {
  var where = '',
    message = exception.reason || '(unknown reason)';
  if (!exception.mark) return message;
  if (exception.mark.name) {
    where += 'in "' + exception.mark.name + '" ';
  }
  where += '(' + (exception.mark.line + 1) + ':' + (exception.mark.column + 1) + ')';
  if (!compact && exception.mark.snippet) {
    where += '\n\n' + exception.mark.snippet;
  }
  return message + ' ' + where;
}
function YAMLException$1(reason, mark) {
  Error.call(this);
  this.name = 'YAMLException';
  this.reason = reason;
  this.mark = mark;
  this.message = formatError(this, false);
  if (Error.captureStackTrace) {
    Error.captureStackTrace(this, this.constructor);
  } else {
    this.stack = new Error().stack || '';
  }
}
YAMLException$1.prototype = Object.create(Error.prototype);
YAMLException$1.prototype.constructor = YAMLException$1;
YAMLException$1.prototype.toString = function toString(compact) {
  return this.name + ': ' + formatError(this, compact);
};
var exception = YAMLException$1;
function getLine(buffer, lineStart, lineEnd, position, maxLineLength) {
  var head = '';
  var tail = '';
  var maxHalfLength = Math.floor(maxLineLength / 2) - 1;
  if (position - lineStart > maxHalfLength) {
    head = ' ... ';
    lineStart = position - maxHalfLength + head.length;
  }
  if (lineEnd - position > maxHalfLength) {
    tail = ' ...';
    lineEnd = position + maxHalfLength - tail.length;
  }
  return {
    str: head + buffer.slice(lineStart, lineEnd).replace(/\t/g, '→') + tail,
    pos: position - lineStart + head.length
  };
}
function padStart(string, max) {
  return common.repeat(' ', max - string.length) + string;
}
function makeSnippet(mark, options) {
  options = Object.create(options || null);
  if (!mark.buffer) return null;
  if (!options.maxLength) options.maxLength = 79;
  if (typeof options.indent !== 'number') options.indent = 1;
  if (typeof options.linesBefore !== 'number') options.linesBefore = 3;
  if (typeof options.linesAfter !== 'number') options.linesAfter = 2;
  var re = /\r?\n|\r|\0/g;
  var lineStarts = [0];
  var lineEnds = [];
  var match;
  var foundLineNo = -1;
  while (match = re.exec(mark.buffer)) {
    lineEnds.push(match.index);
    lineStarts.push(match.index + match[0].length);
    if (mark.position <= match.index && foundLineNo < 0) {
      foundLineNo = lineStarts.length - 2;
    }
  }
  if (foundLineNo < 0) foundLineNo = lineStarts.length - 1;
  var result = '',
    i,
    line;
  var lineNoLength = Math.min(mark.line + options.linesAfter, lineEnds.length).toString().length;
  var maxLineLength = options.maxLength - (options.indent + lineNoLength + 3);
  for (i = 1; i <= options.linesBefore; i++) {
    if (foundLineNo - i < 0) break;
    line = getLine(mark.buffer, lineStarts[foundLineNo - i], lineEnds[foundLineNo - i], mark.position - (lineStarts[foundLineNo] - lineStarts[foundLineNo - i]), maxLineLength);
    result = common.repeat(' ', options.indent) + padStart((mark.line - i + 1).toString(), lineNoLength) + ' | ' + line.str + '\n' + result;
  }
  line = getLine(mark.buffer, lineStarts[foundLineNo], lineEnds[foundLineNo], mark.position, maxLineLength);
  result += common.repeat(' ', options.indent) + padStart((mark.line + 1).toString(), lineNoLength) + ' | ' + line.str + '\n';
  result += common.repeat('-', options.indent + lineNoLength + 3 + line.pos) + '^' + '\n';
  for (i = 1; i <= options.linesAfter; i++) {
    if (foundLineNo + i >= lineEnds.length) break;
    line = getLine(mark.buffer, lineStarts[foundLineNo + i], lineEnds[foundLineNo + i], mark.position - (lineStarts[foundLineNo] - lineStarts[foundLineNo + i]), maxLineLength);
    result += common.repeat(' ', options.indent) + padStart((mark.line + i + 1).toString(), lineNoLength) + ' | ' + line.str + '\n';
  }
  return result.replace(/\n$/, '');
}
var snippet = makeSnippet;
var TYPE_CONSTRUCTOR_OPTIONS = ['kind', 'multi', 'resolve', 'construct', 'instanceOf', 'predicate', 'represent', 'representName', 'defaultStyle', 'styleAliases'];
var YAML_NODE_KINDS = ['scalar', 'sequence', 'mapping'];
function compileStyleAliases(map) {
  var result = {};
  if (map !== null) {
    Object.keys(map).forEach(function (style) {
      map[style].forEach(function (alias) {
        result[String(alias)] = style;
      });
    });
  }
  return result;
}
function Type$1(tag, options) {
  options = options || {};
  Object.keys(options).forEach(function (name) {
    if (TYPE_CONSTRUCTOR_OPTIONS.indexOf(name) === -1) {
      throw new exception('Unknown option "' + name + '" is met in definition of "' + tag + '" YAML type.');
    }
  });
  this.options = options;
  this.tag = tag;
  this.kind = options['kind'] || null;
  this.resolve = options['resolve'] || function () {
    return true;
  };
  this.construct = options['construct'] || function (data) {
    return data;
  };
  this.instanceOf = options['instanceOf'] || null;
  this.predicate = options['predicate'] || null;
  this.represent = options['represent'] || null;
  this.representName = options['representName'] || null;
  this.defaultStyle = options['defaultStyle'] || null;
  this.multi = options['multi'] || false;
  this.styleAliases = compileStyleAliases(options['styleAliases'] || null);
  if (YAML_NODE_KINDS.indexOf(this.kind) === -1) {
    throw new exception('Unknown kind "' + this.kind + '" is specified for "' + tag + '" YAML type.');
  }
}
var type = Type$1;
function compileList(schema, name) {
  var result = [];
  schema[name].forEach(function (currentType) {
    var newIndex = result.length;
    result.forEach(function (previousType, previousIndex) {
      if (previousType.tag === currentType.tag && previousType.kind === currentType.kind && previousType.multi === currentType.multi) {
        newIndex = previousIndex;
      }
    });
    result[newIndex] = currentType;
  });
  return result;
}
function compileMap() {
  var result = {
      scalar: {},
      sequence: {},
      mapping: {},
      fallback: {},
      multi: {
        scalar: [],
        sequence: [],
        mapping: [],
        fallback: []
      }
    },
    index,
    length;
  function collectType(type) {
    if (type.multi) {
      result.multi[type.kind].push(type);
      result.multi['fallback'].push(type);
    } else {
      result[type.kind][type.tag] = result['fallback'][type.tag] = type;
    }
  }
  for (index = 0, length = arguments.length; index < length; index += 1) {
    arguments[index].forEach(collectType);
  }
  return result;
}
function Schema$1(definition) {
  return this.extend(definition);
}
Schema$1.prototype.extend = function extend(definition) {
  var implicit = [];
  var explicit = [];
  if (definition instanceof type) {
    explicit.push(definition);
  } else if (Array.isArray(definition)) {
    explicit = explicit.concat(definition);
  } else if (definition && (Array.isArray(definition.implicit) || Array.isArray(definition.explicit))) {
    if (definition.implicit) implicit = implicit.concat(definition.implicit);
    if (definition.explicit) explicit = explicit.concat(definition.explicit);
  } else {
    throw new exception('Schema.extend argument should be a Type, [ Type ], ' + 'or a schema definition ({ implicit: [...], explicit: [...] })');
  }
  implicit.forEach(function (type$1) {
    if (!(type$1 instanceof type)) {
      throw new exception('Specified list of YAML types (or a single Type object) contains a non-Type object.');
    }
    if (type$1.loadKind && type$1.loadKind !== 'scalar') {
      throw new exception('There is a non-scalar type in the implicit list of a schema. Implicit resolving of such types is not supported.');
    }
    if (type$1.multi) {
      throw new exception('There is a multi type in the implicit list of a schema. Multi tags can only be listed as explicit.');
    }
  });
  explicit.forEach(function (type$1) {
    if (!(type$1 instanceof type)) {
      throw new exception('Specified list of YAML types (or a single Type object) contains a non-Type object.');
    }
  });
  var result = Object.create(Schema$1.prototype);
  result.implicit = (this.implicit || []).concat(implicit);
  result.explicit = (this.explicit || []).concat(explicit);
  result.compiledImplicit = compileList(result, 'implicit');
  result.compiledExplicit = compileList(result, 'explicit');
  result.compiledTypeMap = compileMap(result.compiledImplicit, result.compiledExplicit);
  return result;
};
var schema = Schema$1;
var str = new type('tag:yaml.org,2002:str', {
  kind: 'scalar',
  construct: function construct(data) {
    return data !== null ? data : '';
  }
});
var seq = new type('tag:yaml.org,2002:seq', {
  kind: 'sequence',
  construct: function construct(data) {
    return data !== null ? data : [];
  }
});
var map = new type('tag:yaml.org,2002:map', {
  kind: 'mapping',
  construct: function construct(data) {
    return data !== null ? data : {};
  }
});
var failsafe = new schema({
  explicit: [str, seq, map]
});
function resolveYamlNull(data) {
  if (data === null) return true;
  var max = data.length;
  return max === 1 && data === '~' || max === 4 && (data === 'null' || data === 'Null' || data === 'NULL');
}
function constructYamlNull() {
  return null;
}
function isNull(object) {
  return object === null;
}
var _null = new type('tag:yaml.org,2002:null', {
  kind: 'scalar',
  resolve: resolveYamlNull,
  construct: constructYamlNull,
  predicate: isNull,
  represent: {
    canonical: function canonical() {
      return '~';
    },
    lowercase: function lowercase() {
      return 'null';
    },
    uppercase: function uppercase() {
      return 'NULL';
    },
    camelcase: function camelcase() {
      return 'Null';
    },
    empty: function empty() {
      return '';
    }
  },
  defaultStyle: 'lowercase'
});
function resolveYamlBoolean(data) {
  if (data === null) return false;
  var max = data.length;
  return max === 4 && (data === 'true' || data === 'True' || data === 'TRUE') || max === 5 && (data === 'false' || data === 'False' || data === 'FALSE');
}
function constructYamlBoolean(data) {
  return data === 'true' || data === 'True' || data === 'TRUE';
}
function isBoolean(object) {
  return Object.prototype.toString.call(object) === '[object Boolean]';
}
var bool = new type('tag:yaml.org,2002:bool', {
  kind: 'scalar',
  resolve: resolveYamlBoolean,
  construct: constructYamlBoolean,
  predicate: isBoolean,
  represent: {
    lowercase: function lowercase(object) {
      return object ? 'true' : 'false';
    },
    uppercase: function uppercase(object) {
      return object ? 'TRUE' : 'FALSE';
    },
    camelcase: function camelcase(object) {
      return object ? 'True' : 'False';
    }
  },
  defaultStyle: 'lowercase'
});
function isHexCode(c) {
  return 0x30 <= c && c <= 0x39 || 0x41 <= c && c <= 0x46 || 0x61 <= c && c <= 0x66;
}
function isOctCode(c) {
  return 0x30 <= c && c <= 0x37;
}
function isDecCode(c) {
  return 0x30 <= c && c <= 0x39;
}
function resolveYamlInteger(data) {
  if (data === null) return false;
  var max = data.length,
    index = 0,
    hasDigits = false,
    ch;
  if (!max) return false;
  ch = data[index];
  if (ch === '-' || ch === '+') {
    ch = data[++index];
  }
  if (ch === '0') {
    if (index + 1 === max) return true;
    ch = data[++index];
    if (ch === 'b') {
      index++;
      for (; index < max; index++) {
        ch = data[index];
        if (ch === '_') continue;
        if (ch !== '0' && ch !== '1') return false;
        hasDigits = true;
      }
      return hasDigits && ch !== '_';
    }
    if (ch === 'x') {
      index++;
      for (; index < max; index++) {
        ch = data[index];
        if (ch === '_') continue;
        if (!isHexCode(data.charCodeAt(index))) return false;
        hasDigits = true;
      }
      return hasDigits && ch !== '_';
    }
    if (ch === 'o') {
      index++;
      for (; index < max; index++) {
        ch = data[index];
        if (ch === '_') continue;
        if (!isOctCode(data.charCodeAt(index))) return false;
        hasDigits = true;
      }
      return hasDigits && ch !== '_';
    }
  }
  if (ch === '_') return false;
  for (; index < max; index++) {
    ch = data[index];
    if (ch === '_') continue;
    if (!isDecCode(data.charCodeAt(index))) {
      return false;
    }
    hasDigits = true;
  }
  if (!hasDigits || ch === '_') return false;
  return true;
}
function constructYamlInteger(data) {
  var value = data,
    sign = 1,
    ch;
  if (value.indexOf('_') !== -1) {
    value = value.replace(/_/g, '');
  }
  ch = value[0];
  if (ch === '-' || ch === '+') {
    if (ch === '-') sign = -1;
    value = value.slice(1);
    ch = value[0];
  }
  if (value === '0') return 0;
  if (ch === '0') {
    if (value[1] === 'b') return sign * parseInt(value.slice(2), 2);
    if (value[1] === 'x') return sign * parseInt(value.slice(2), 16);
    if (value[1] === 'o') return sign * parseInt(value.slice(2), 8);
  }
  return sign * parseInt(value, 10);
}
function isInteger(object) {
  return Object.prototype.toString.call(object) === '[object Number]' && object % 1 === 0 && !common.isNegativeZero(object);
}
var int = new type('tag:yaml.org,2002:int', {
  kind: 'scalar',
  resolve: resolveYamlInteger,
  construct: constructYamlInteger,
  predicate: isInteger,
  represent: {
    binary: function binary(obj) {
      return obj >= 0 ? '0b' + obj.toString(2) : '-0b' + obj.toString(2).slice(1);
    },
    octal: function octal(obj) {
      return obj >= 0 ? '0o' + obj.toString(8) : '-0o' + obj.toString(8).slice(1);
    },
    decimal: function decimal(obj) {
      return obj.toString(10);
    },
    hexadecimal: function hexadecimal(obj) {
      return obj >= 0 ? '0x' + obj.toString(16).toUpperCase() : '-0x' + obj.toString(16).toUpperCase().slice(1);
    }
  },
  defaultStyle: 'decimal',
  styleAliases: {
    binary: [2, 'bin'],
    octal: [8, 'oct'],
    decimal: [10, 'dec'],
    hexadecimal: [16, 'hex']
  }
});
var YAML_FLOAT_PATTERN = new RegExp('^(?:[-+]?(?:[0-9][0-9_]*)(?:\\.[0-9_]*)?(?:[eE][-+]?[0-9]+)?' + '|\\.[0-9_]+(?:[eE][-+]?[0-9]+)?' + '|[-+]?\\.(?:inf|Inf|INF)' + '|\\.(?:nan|NaN|NAN))$');
function resolveYamlFloat(data) {
  if (data === null) return false;
  if (!YAML_FLOAT_PATTERN.test(data) || data[data.length - 1] === '_') {
    return false;
  }
  return true;
}
function constructYamlFloat(data) {
  var value, sign;
  value = data.replace(/_/g, '').toLowerCase();
  sign = value[0] === '-' ? -1 : 1;
  if ('+-'.indexOf(value[0]) >= 0) {
    value = value.slice(1);
  }
  if (value === '.inf') {
    return sign === 1 ? Number.POSITIVE_INFINITY : Number.NEGATIVE_INFINITY;
  } else if (value === '.nan') {
    return NaN;
  }
  return sign * parseFloat(value, 10);
}
var SCIENTIFIC_WITHOUT_DOT = /^[-+]?[0-9]+e/;
function representYamlFloat(object, style) {
  var res;
  if (isNaN(object)) {
    switch (style) {
      case 'lowercase':
        return '.nan';
      case 'uppercase':
        return '.NAN';
      case 'camelcase':
        return '.NaN';
    }
  } else if (Number.POSITIVE_INFINITY === object) {
    switch (style) {
      case 'lowercase':
        return '.inf';
      case 'uppercase':
        return '.INF';
      case 'camelcase':
        return '.Inf';
    }
  } else if (Number.NEGATIVE_INFINITY === object) {
    switch (style) {
      case 'lowercase':
        return '-.inf';
      case 'uppercase':
        return '-.INF';
      case 'camelcase':
        return '-.Inf';
    }
  } else if (common.isNegativeZero(object)) {
    return '-0.0';
  }
  res = object.toString(10);
  return SCIENTIFIC_WITHOUT_DOT.test(res) ? res.replace('e', '.e') : res;
}
function isFloat(object) {
  return Object.prototype.toString.call(object) === '[object Number]' && (object % 1 !== 0 || common.isNegativeZero(object));
}
var float = new type('tag:yaml.org,2002:float', {
  kind: 'scalar',
  resolve: resolveYamlFloat,
  construct: constructYamlFloat,
  predicate: isFloat,
  represent: representYamlFloat,
  defaultStyle: 'lowercase'
});
var json = failsafe.extend({
  implicit: [_null, bool, int, float]
});
var core = json;
var YAML_DATE_REGEXP = new RegExp('^([0-9][0-9][0-9][0-9])' + '-([0-9][0-9])' + '-([0-9][0-9])$');
var YAML_TIMESTAMP_REGEXP = new RegExp('^([0-9][0-9][0-9][0-9])' + '-([0-9][0-9]?)' + '-([0-9][0-9]?)' + '(?:[Tt]|[ \\t]+)' + '([0-9][0-9]?)' + ':([0-9][0-9])' + ':([0-9][0-9])' + '(?:\\.([0-9]*))?' + '(?:[ \\t]*(Z|([-+])([0-9][0-9]?)' + '(?::([0-9][0-9]))?))?$');
function resolveYamlTimestamp(data) {
  if (data === null) return false;
  if (YAML_DATE_REGEXP.exec(data) !== null) return true;
  if (YAML_TIMESTAMP_REGEXP.exec(data) !== null) return true;
  return false;
}
function constructYamlTimestamp(data) {
  var match,
    year,
    month,
    day,
    hour,
    minute,
    second,
    fraction = 0,
    delta = null,
    tz_hour,
    tz_minute,
    date;
  match = YAML_DATE_REGEXP.exec(data);
  if (match === null) match = YAML_TIMESTAMP_REGEXP.exec(data);
  if (match === null) throw new Error('Date resolve error');
  year = +match[1];
  month = +match[2] - 1;
  day = +match[3];
  if (!match[4]) {
    return new Date(Date.UTC(year, month, day));
  }
  hour = +match[4];
  minute = +match[5];
  second = +match[6];
  if (match[7]) {
    fraction = match[7].slice(0, 3);
    while (fraction.length < 3) {
      fraction += '0';
    }
    fraction = +fraction;
  }
  if (match[9]) {
    tz_hour = +match[10];
    tz_minute = +(match[11] || 0);
    delta = (tz_hour * 60 + tz_minute) * 60000;
    if (match[9] === '-') delta = -delta;
  }
  date = new Date(Date.UTC(year, month, day, hour, minute, second, fraction));
  if (delta) date.setTime(date.getTime() - delta);
  return date;
}
function representYamlTimestamp(object) {
  return object.toISOString();
}
var timestamp = new type('tag:yaml.org,2002:timestamp', {
  kind: 'scalar',
  resolve: resolveYamlTimestamp,
  construct: constructYamlTimestamp,
  instanceOf: Date,
  represent: representYamlTimestamp
});
function resolveYamlMerge(data) {
  return data === '<<' || data === null;
}
var merge = new type('tag:yaml.org,2002:merge', {
  kind: 'scalar',
  resolve: resolveYamlMerge
});
var BASE64_MAP = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=\n\r';
function resolveYamlBinary(data) {
  if (data === null) return false;
  var code,
    idx,
    bitlen = 0,
    max = data.length,
    map = BASE64_MAP;
  for (idx = 0; idx < max; idx++) {
    code = map.indexOf(data.charAt(idx));
    if (code > 64) continue;
    if (code < 0) return false;
    bitlen += 6;
  }
  return bitlen % 8 === 0;
}
function constructYamlBinary(data) {
  var idx,
    tailbits,
    input = data.replace(/[\r\n=]/g, ''),
    max = input.length,
    map = BASE64_MAP,
    bits = 0,
    result = [];
  for (idx = 0; idx < max; idx++) {
    if (idx % 4 === 0 && idx) {
      result.push(bits >> 16 & 0xFF);
      result.push(bits >> 8 & 0xFF);
      result.push(bits & 0xFF);
    }
    bits = bits << 6 | map.indexOf(input.charAt(idx));
  }
  tailbits = max % 4 * 6;
  if (tailbits === 0) {
    result.push(bits >> 16 & 0xFF);
    result.push(bits >> 8 & 0xFF);
    result.push(bits & 0xFF);
  } else if (tailbits === 18) {
    result.push(bits >> 10 & 0xFF);
    result.push(bits >> 2 & 0xFF);
  } else if (tailbits === 12) {
    result.push(bits >> 4 & 0xFF);
  }
  return new Uint8Array(result);
}
function representYamlBinary(object) {
  var result = '',
    bits = 0,
    idx,
    tail,
    max = object.length,
    map = BASE64_MAP;
  for (idx = 0; idx < max; idx++) {
    if (idx % 3 === 0 && idx) {
      result += map[bits >> 18 & 0x3F];
      result += map[bits >> 12 & 0x3F];
      result += map[bits >> 6 & 0x3F];
      result += map[bits & 0x3F];
    }
    bits = (bits << 8) + object[idx];
  }
  tail = max % 3;
  if (tail === 0) {
    result += map[bits >> 18 & 0x3F];
    result += map[bits >> 12 & 0x3F];
    result += map[bits >> 6 & 0x3F];
    result += map[bits & 0x3F];
  } else if (tail === 2) {
    result += map[bits >> 10 & 0x3F];
    result += map[bits >> 4 & 0x3F];
    result += map[bits << 2 & 0x3F];
    result += map[64];
  } else if (tail === 1) {
    result += map[bits >> 2 & 0x3F];
    result += map[bits << 4 & 0x3F];
    result += map[64];
    result += map[64];
  }
  return result;
}
function isBinary(obj) {
  return Object.prototype.toString.call(obj) === '[object Uint8Array]';
}
var binary = new type('tag:yaml.org,2002:binary', {
  kind: 'scalar',
  resolve: resolveYamlBinary,
  construct: constructYamlBinary,
  predicate: isBinary,
  represent: representYamlBinary
});
var _hasOwnProperty$3 = Object.prototype.hasOwnProperty;
var _toString$2 = Object.prototype.toString;
function resolveYamlOmap(data) {
  if (data === null) return true;
  var objectKeys = [],
    index,
    length,
    pair,
    pairKey,
    pairHasKey,
    object = data;
  for (index = 0, length = object.length; index < length; index += 1) {
    pair = object[index];
    pairHasKey = false;
    if (_toString$2.call(pair) !== '[object Object]') return false;
    for (pairKey in pair) {
      if (_hasOwnProperty$3.call(pair, pairKey)) {
        if (!pairHasKey) pairHasKey = true;else return false;
      }
    }
    if (!pairHasKey) return false;
    if (objectKeys.indexOf(pairKey) === -1) objectKeys.push(pairKey);else return false;
  }
  return true;
}
function constructYamlOmap(data) {
  return data !== null ? data : [];
}
var omap = new type('tag:yaml.org,2002:omap', {
  kind: 'sequence',
  resolve: resolveYamlOmap,
  construct: constructYamlOmap
});
var _toString$1 = Object.prototype.toString;
function resolveYamlPairs(data) {
  if (data === null) return true;
  var index,
    length,
    pair,
    keys,
    result,
    object = data;
  result = new Array(object.length);
  for (index = 0, length = object.length; index < length; index += 1) {
    pair = object[index];
    if (_toString$1.call(pair) !== '[object Object]') return false;
    keys = Object.keys(pair);
    if (keys.length !== 1) return false;
    result[index] = [keys[0], pair[keys[0]]];
  }
  return true;
}
function constructYamlPairs(data) {
  if (data === null) return [];
  var index,
    length,
    pair,
    keys,
    result,
    object = data;
  result = new Array(object.length);
  for (index = 0, length = object.length; index < length; index += 1) {
    pair = object[index];
    keys = Object.keys(pair);
    result[index] = [keys[0], pair[keys[0]]];
  }
  return result;
}
var pairs = new type('tag:yaml.org,2002:pairs', {
  kind: 'sequence',
  resolve: resolveYamlPairs,
  construct: constructYamlPairs
});
var _hasOwnProperty$2 = Object.prototype.hasOwnProperty;
function resolveYamlSet(data) {
  if (data === null) return true;
  var key,
    object = data;
  for (key in object) {
    if (_hasOwnProperty$2.call(object, key)) {
      if (object[key] !== null) return false;
    }
  }
  return true;
}
function constructYamlSet(data) {
  return data !== null ? data : {};
}
var set = new type('tag:yaml.org,2002:set', {
  kind: 'mapping',
  resolve: resolveYamlSet,
  construct: constructYamlSet
});
var _default = core.extend({
  implicit: [timestamp, merge],
  explicit: [binary, omap, pairs, set]
});
var _hasOwnProperty$1 = Object.prototype.hasOwnProperty;
var CONTEXT_FLOW_IN = 1;
var CONTEXT_FLOW_OUT = 2;
var CONTEXT_BLOCK_IN = 3;
var CONTEXT_BLOCK_OUT = 4;
var CHOMPING_CLIP = 1;
var CHOMPING_STRIP = 2;
var CHOMPING_KEEP = 3;
var PATTERN_NON_PRINTABLE = /[\x00-\x08\x0B\x0C\x0E-\x1F\x7F-\x84\x86-\x9F\uFFFE\uFFFF]|[\uD800-\uDBFF](?![\uDC00-\uDFFF])|(?:[^\uD800-\uDBFF]|^)[\uDC00-\uDFFF]/;
var PATTERN_NON_ASCII_LINE_BREAKS = /[\x85\u2028\u2029]/;
var PATTERN_FLOW_INDICATORS = /[,\[\]\{\}]/;
var PATTERN_TAG_HANDLE = /^(?:!|!!|![a-z\-]+!)$/i;
var PATTERN_TAG_URI = /^(?:!|[^,\[\]\{\}])(?:%[0-9a-f]{2}|[0-9a-z\-#;\/\?:@&=\+\$,_\.!~\*'\(\)\[\]])*$/i;
function _class(obj) {
  return Object.prototype.toString.call(obj);
}
function is_EOL(c) {
  return c === 0x0A || c === 0x0D;
}
function is_WHITE_SPACE(c) {
  return c === 0x09 || c === 0x20;
}
function is_WS_OR_EOL(c) {
  return c === 0x09 || c === 0x20 || c === 0x0A || c === 0x0D;
}
function is_FLOW_INDICATOR(c) {
  return c === 0x2C || c === 0x5B || c === 0x5D || c === 0x7B || c === 0x7D;
}
function fromHexCode(c) {
  var lc;
  if (0x30 <= c && c <= 0x39) {
    return c - 0x30;
  }
  lc = c | 0x20;
  if (0x61 <= lc && lc <= 0x66) {
    return lc - 0x61 + 10;
  }
  return -1;
}
function escapedHexLen(c) {
  if (c === 0x78) {
    return 2;
  }
  if (c === 0x75) {
    return 4;
  }
  if (c === 0x55) {
    return 8;
  }
  return 0;
}
function fromDecimalCode(c) {
  if (0x30 <= c && c <= 0x39) {
    return c - 0x30;
  }
  return -1;
}
function simpleEscapeSequence(c) {
  return c === 0x30 ? '\x00' : c === 0x61 ? '\x07' : c === 0x62 ? '\x08' : c === 0x74 ? '\x09' : c === 0x09 ? '\x09' : c === 0x6E ? '\x0A' : c === 0x76 ? '\x0B' : c === 0x66 ? '\x0C' : c === 0x72 ? '\x0D' : c === 0x65 ? '\x1B' : c === 0x20 ? ' ' : c === 0x22 ? '\x22' : c === 0x2F ? '/' : c === 0x5C ? '\x5C' : c === 0x4E ? '\x85' : c === 0x5F ? '\xA0' : c === 0x4C ? "\u2028" : c === 0x50 ? "\u2029" : '';
}
function charFromCodepoint(c) {
  if (c <= 0xFFFF) {
    return String.fromCharCode(c);
  }
  return String.fromCharCode((c - 0x010000 >> 10) + 0xD800, (c - 0x010000 & 0x03FF) + 0xDC00);
}
var simpleEscapeCheck = new Array(256);
var simpleEscapeMap = new Array(256);
for (var i = 0; i < 256; i++) {
  simpleEscapeCheck[i] = simpleEscapeSequence(i) ? 1 : 0;
  simpleEscapeMap[i] = simpleEscapeSequence(i);
}
function State$1(input, options) {
  this.input = input;
  this.filename = options['filename'] || null;
  this.schema = options['schema'] || _default;
  this.onWarning = options['onWarning'] || null;
  this.legacy = options['legacy'] || false;
  this.json = options['json'] || false;
  this.listener = options['listener'] || null;
  this.implicitTypes = this.schema.compiledImplicit;
  this.typeMap = this.schema.compiledTypeMap;
  this.length = input.length;
  this.position = 0;
  this.line = 0;
  this.lineStart = 0;
  this.lineIndent = 0;
  this.firstTabInLine = -1;
  this.documents = [];
}
function generateError(state, message) {
  var mark = {
    name: state.filename,
    buffer: state.input.slice(0, -1),
    position: state.position,
    line: state.line,
    column: state.position - state.lineStart
  };
  mark.snippet = snippet(mark);
  return new exception(message, mark);
}
function throwError(state, message) {
  throw generateError(state, message);
}
function throwWarning(state, message) {
  if (state.onWarning) {
    state.onWarning.call(null, generateError(state, message));
  }
}
var directiveHandlers = {
  YAML: function handleYamlDirective(state, name, args) {
    var match, major, minor;
    if (state.version !== null) {
      throwError(state, 'duplication of %YAML directive');
    }
    if (args.length !== 1) {
      throwError(state, 'YAML directive accepts exactly one argument');
    }
    match = /^([0-9]+)\.([0-9]+)$/.exec(args[0]);
    if (match === null) {
      throwError(state, 'ill-formed argument of the YAML directive');
    }
    major = parseInt(match[1], 10);
    minor = parseInt(match[2], 10);
    if (major !== 1) {
      throwError(state, 'unacceptable YAML version of the document');
    }
    state.version = args[0];
    state.checkLineBreaks = minor < 2;
    if (minor !== 1 && minor !== 2) {
      throwWarning(state, 'unsupported YAML version of the document');
    }
  },
  TAG: function handleTagDirective(state, name, args) {
    var handle, prefix;
    if (args.length !== 2) {
      throwError(state, 'TAG directive accepts exactly two arguments');
    }
    handle = args[0];
    prefix = args[1];
    if (!PATTERN_TAG_HANDLE.test(handle)) {
      throwError(state, 'ill-formed tag handle (first argument) of the TAG directive');
    }
    if (_hasOwnProperty$1.call(state.tagMap, handle)) {
      throwError(state, 'there is a previously declared suffix for "' + handle + '" tag handle');
    }
    if (!PATTERN_TAG_URI.test(prefix)) {
      throwError(state, 'ill-formed tag prefix (second argument) of the TAG directive');
    }
    try {
      prefix = decodeURIComponent(prefix);
    } catch (err) {
      throwError(state, 'tag prefix is malformed: ' + prefix);
    }
    state.tagMap[handle] = prefix;
  }
};
function captureSegment(state, start, end, checkJson) {
  var _position, _length, _character, _result;
  if (start < end) {
    _result = state.input.slice(start, end);
    if (checkJson) {
      for (_position = 0, _length = _result.length; _position < _length; _position += 1) {
        _character = _result.charCodeAt(_position);
        if (!(_character === 0x09 || 0x20 <= _character && _character <= 0x10FFFF)) {
          throwError(state, 'expected valid JSON character');
        }
      }
    } else if (PATTERN_NON_PRINTABLE.test(_result)) {
      throwError(state, 'the stream contains non-printable characters');
    }
    state.result += _result;
  }
}
function mergeMappings(state, destination, source, overridableKeys) {
  var sourceKeys, key, index, quantity;
  if (!common.isObject(source)) {
    throwError(state, 'cannot merge mappings; the provided source object is unacceptable');
  }
  sourceKeys = Object.keys(source);
  for (index = 0, quantity = sourceKeys.length; index < quantity; index += 1) {
    key = sourceKeys[index];
    if (!_hasOwnProperty$1.call(destination, key)) {
      destination[key] = source[key];
      overridableKeys[key] = true;
    }
  }
}
function storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, valueNode, startLine, startLineStart, startPos) {
  var index, quantity;
  if (Array.isArray(keyNode)) {
    keyNode = Array.prototype.slice.call(keyNode);
    for (index = 0, quantity = keyNode.length; index < quantity; index += 1) {
      if (Array.isArray(keyNode[index])) {
        throwError(state, 'nested arrays are not supported inside keys');
      }
      if (_typeof(keyNode) === 'object' && _class(keyNode[index]) === '[object Object]') {
        keyNode[index] = '[object Object]';
      }
    }
  }
  if (_typeof(keyNode) === 'object' && _class(keyNode) === '[object Object]') {
    keyNode = '[object Object]';
  }
  keyNode = String(keyNode);
  if (_result === null) {
    _result = {};
  }
  if (keyTag === 'tag:yaml.org,2002:merge') {
    if (Array.isArray(valueNode)) {
      for (index = 0, quantity = valueNode.length; index < quantity; index += 1) {
        mergeMappings(state, _result, valueNode[index], overridableKeys);
      }
    } else {
      mergeMappings(state, _result, valueNode, overridableKeys);
    }
  } else {
    if (!state.json && !_hasOwnProperty$1.call(overridableKeys, keyNode) && _hasOwnProperty$1.call(_result, keyNode)) {
      state.line = startLine || state.line;
      state.lineStart = startLineStart || state.lineStart;
      state.position = startPos || state.position;
      throwError(state, 'duplicated mapping key');
    }
    if (keyNode === '__proto__') {
      Object.defineProperty(_result, keyNode, {
        configurable: true,
        enumerable: true,
        writable: true,
        value: valueNode
      });
    } else {
      _result[keyNode] = valueNode;
    }
    delete overridableKeys[keyNode];
  }
  return _result;
}
function readLineBreak(state) {
  var ch;
  ch = state.input.charCodeAt(state.position);
  if (ch === 0x0A) {
    state.position++;
  } else if (ch === 0x0D) {
    state.position++;
    if (state.input.charCodeAt(state.position) === 0x0A) {
      state.position++;
    }
  } else {
    throwError(state, 'a line break is expected');
  }
  state.line += 1;
  state.lineStart = state.position;
  state.firstTabInLine = -1;
}
function skipSeparationSpace(state, allowComments, checkIndent) {
  var lineBreaks = 0,
    ch = state.input.charCodeAt(state.position);
  while (ch !== 0) {
    while (is_WHITE_SPACE(ch)) {
      if (ch === 0x09 && state.firstTabInLine === -1) {
        state.firstTabInLine = state.position;
      }
      ch = state.input.charCodeAt(++state.position);
    }
    if (allowComments && ch === 0x23) {
      do {
        ch = state.input.charCodeAt(++state.position);
      } while (ch !== 0x0A && ch !== 0x0D && ch !== 0);
    }
    if (is_EOL(ch)) {
      readLineBreak(state);
      ch = state.input.charCodeAt(state.position);
      lineBreaks++;
      state.lineIndent = 0;
      while (ch === 0x20) {
        state.lineIndent++;
        ch = state.input.charCodeAt(++state.position);
      }
    } else {
      break;
    }
  }
  if (checkIndent !== -1 && lineBreaks !== 0 && state.lineIndent < checkIndent) {
    throwWarning(state, 'deficient indentation');
  }
  return lineBreaks;
}
function testDocumentSeparator(state) {
  var _position = state.position,
    ch;
  ch = state.input.charCodeAt(_position);
  if ((ch === 0x2D || ch === 0x2E) && ch === state.input.charCodeAt(_position + 1) && ch === state.input.charCodeAt(_position + 2)) {
    _position += 3;
    ch = state.input.charCodeAt(_position);
    if (ch === 0 || is_WS_OR_EOL(ch)) {
      return true;
    }
  }
  return false;
}
function writeFoldedLines(state, count) {
  if (count === 1) {
    state.result += ' ';
  } else if (count > 1) {
    state.result += common.repeat('\n', count - 1);
  }
}
function readPlainScalar(state, nodeIndent, withinFlowCollection) {
  var preceding,
    following,
    captureStart,
    captureEnd,
    hasPendingContent,
    _line,
    _lineStart,
    _lineIndent,
    _kind = state.kind,
    _result = state.result,
    ch;
  ch = state.input.charCodeAt(state.position);
  if (is_WS_OR_EOL(ch) || is_FLOW_INDICATOR(ch) || ch === 0x23 || ch === 0x26 || ch === 0x2A || ch === 0x21 || ch === 0x7C || ch === 0x3E || ch === 0x27 || ch === 0x22 || ch === 0x25 || ch === 0x40 || ch === 0x60) {
    return false;
  }
  if (ch === 0x3F || ch === 0x2D) {
    following = state.input.charCodeAt(state.position + 1);
    if (is_WS_OR_EOL(following) || withinFlowCollection && is_FLOW_INDICATOR(following)) {
      return false;
    }
  }
  state.kind = 'scalar';
  state.result = '';
  captureStart = captureEnd = state.position;
  hasPendingContent = false;
  while (ch !== 0) {
    if (ch === 0x3A) {
      following = state.input.charCodeAt(state.position + 1);
      if (is_WS_OR_EOL(following) || withinFlowCollection && is_FLOW_INDICATOR(following)) {
        break;
      }
    } else if (ch === 0x23) {
      preceding = state.input.charCodeAt(state.position - 1);
      if (is_WS_OR_EOL(preceding)) {
        break;
      }
    } else if (state.position === state.lineStart && testDocumentSeparator(state) || withinFlowCollection && is_FLOW_INDICATOR(ch)) {
      break;
    } else if (is_EOL(ch)) {
      _line = state.line;
      _lineStart = state.lineStart;
      _lineIndent = state.lineIndent;
      skipSeparationSpace(state, false, -1);
      if (state.lineIndent >= nodeIndent) {
        hasPendingContent = true;
        ch = state.input.charCodeAt(state.position);
        continue;
      } else {
        state.position = captureEnd;
        state.line = _line;
        state.lineStart = _lineStart;
        state.lineIndent = _lineIndent;
        break;
      }
    }
    if (hasPendingContent) {
      captureSegment(state, captureStart, captureEnd, false);
      writeFoldedLines(state, state.line - _line);
      captureStart = captureEnd = state.position;
      hasPendingContent = false;
    }
    if (!is_WHITE_SPACE(ch)) {
      captureEnd = state.position + 1;
    }
    ch = state.input.charCodeAt(++state.position);
  }
  captureSegment(state, captureStart, captureEnd, false);
  if (state.result) {
    return true;
  }
  state.kind = _kind;
  state.result = _result;
  return false;
}
function readSingleQuotedScalar(state, nodeIndent) {
  var ch, captureStart, captureEnd;
  ch = state.input.charCodeAt(state.position);
  if (ch !== 0x27) {
    return false;
  }
  state.kind = 'scalar';
  state.result = '';
  state.position++;
  captureStart = captureEnd = state.position;
  while ((ch = state.input.charCodeAt(state.position)) !== 0) {
    if (ch === 0x27) {
      captureSegment(state, captureStart, state.position, true);
      ch = state.input.charCodeAt(++state.position);
      if (ch === 0x27) {
        captureStart = state.position;
        state.position++;
        captureEnd = state.position;
      } else {
        return true;
      }
    } else if (is_EOL(ch)) {
      captureSegment(state, captureStart, captureEnd, true);
      writeFoldedLines(state, skipSeparationSpace(state, false, nodeIndent));
      captureStart = captureEnd = state.position;
    } else if (state.position === state.lineStart && testDocumentSeparator(state)) {
      throwError(state, 'unexpected end of the document within a single quoted scalar');
    } else {
      state.position++;
      captureEnd = state.position;
    }
  }
  throwError(state, 'unexpected end of the stream within a single quoted scalar');
}
function readDoubleQuotedScalar(state, nodeIndent) {
  var captureStart, captureEnd, hexLength, hexResult, tmp, ch;
  ch = state.input.charCodeAt(state.position);
  if (ch !== 0x22) {
    return false;
  }
  state.kind = 'scalar';
  state.result = '';
  state.position++;
  captureStart = captureEnd = state.position;
  while ((ch = state.input.charCodeAt(state.position)) !== 0) {
    if (ch === 0x22) {
      captureSegment(state, captureStart, state.position, true);
      state.position++;
      return true;
    } else if (ch === 0x5C) {
      captureSegment(state, captureStart, state.position, true);
      ch = state.input.charCodeAt(++state.position);
      if (is_EOL(ch)) {
        skipSeparationSpace(state, false, nodeIndent);
      } else if (ch < 256 && simpleEscapeCheck[ch]) {
        state.result += simpleEscapeMap[ch];
        state.position++;
      } else if ((tmp = escapedHexLen(ch)) > 0) {
        hexLength = tmp;
        hexResult = 0;
        for (; hexLength > 0; hexLength--) {
          ch = state.input.charCodeAt(++state.position);
          if ((tmp = fromHexCode(ch)) >= 0) {
            hexResult = (hexResult << 4) + tmp;
          } else {
            throwError(state, 'expected hexadecimal character');
          }
        }
        state.result += charFromCodepoint(hexResult);
        state.position++;
      } else {
        throwError(state, 'unknown escape sequence');
      }
      captureStart = captureEnd = state.position;
    } else if (is_EOL(ch)) {
      captureSegment(state, captureStart, captureEnd, true);
      writeFoldedLines(state, skipSeparationSpace(state, false, nodeIndent));
      captureStart = captureEnd = state.position;
    } else if (state.position === state.lineStart && testDocumentSeparator(state)) {
      throwError(state, 'unexpected end of the document within a double quoted scalar');
    } else {
      state.position++;
      captureEnd = state.position;
    }
  }
  throwError(state, 'unexpected end of the stream within a double quoted scalar');
}
function readFlowCollection(state, nodeIndent) {
  var readNext = true,
    _line,
    _lineStart,
    _pos,
    _tag = state.tag,
    _result,
    _anchor = state.anchor,
    following,
    terminator,
    isPair,
    isExplicitPair,
    isMapping,
    overridableKeys = Object.create(null),
    keyNode,
    keyTag,
    valueNode,
    ch;
  ch = state.input.charCodeAt(state.position);
  if (ch === 0x5B) {
    terminator = 0x5D;
    isMapping = false;
    _result = [];
  } else if (ch === 0x7B) {
    terminator = 0x7D;
    isMapping = true;
    _result = {};
  } else {
    return false;
  }
  if (state.anchor !== null) {
    state.anchorMap[state.anchor] = _result;
  }
  ch = state.input.charCodeAt(++state.position);
  while (ch !== 0) {
    skipSeparationSpace(state, true, nodeIndent);
    ch = state.input.charCodeAt(state.position);
    if (ch === terminator) {
      state.position++;
      state.tag = _tag;
      state.anchor = _anchor;
      state.kind = isMapping ? 'mapping' : 'sequence';
      state.result = _result;
      return true;
    } else if (!readNext) {
      throwError(state, 'missed comma between flow collection entries');
    } else if (ch === 0x2C) {
      throwError(state, "expected the node content, but found ','");
    }
    keyTag = keyNode = valueNode = null;
    isPair = isExplicitPair = false;
    if (ch === 0x3F) {
      following = state.input.charCodeAt(state.position + 1);
      if (is_WS_OR_EOL(following)) {
        isPair = isExplicitPair = true;
        state.position++;
        skipSeparationSpace(state, true, nodeIndent);
      }
    }
    _line = state.line;
    _lineStart = state.lineStart;
    _pos = state.position;
    composeNode(state, nodeIndent, CONTEXT_FLOW_IN, false, true);
    keyTag = state.tag;
    keyNode = state.result;
    skipSeparationSpace(state, true, nodeIndent);
    ch = state.input.charCodeAt(state.position);
    if ((isExplicitPair || state.line === _line) && ch === 0x3A) {
      isPair = true;
      ch = state.input.charCodeAt(++state.position);
      skipSeparationSpace(state, true, nodeIndent);
      composeNode(state, nodeIndent, CONTEXT_FLOW_IN, false, true);
      valueNode = state.result;
    }
    if (isMapping) {
      storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, valueNode, _line, _lineStart, _pos);
    } else if (isPair) {
      _result.push(storeMappingPair(state, null, overridableKeys, keyTag, keyNode, valueNode, _line, _lineStart, _pos));
    } else {
      _result.push(keyNode);
    }
    skipSeparationSpace(state, true, nodeIndent);
    ch = state.input.charCodeAt(state.position);
    if (ch === 0x2C) {
      readNext = true;
      ch = state.input.charCodeAt(++state.position);
    } else {
      readNext = false;
    }
  }
  throwError(state, 'unexpected end of the stream within a flow collection');
}
function readBlockScalar(state, nodeIndent) {
  var captureStart,
    folding,
    chomping = CHOMPING_CLIP,
    didReadContent = false,
    detectedIndent = false,
    textIndent = nodeIndent,
    emptyLines = 0,
    atMoreIndented = false,
    tmp,
    ch;
  ch = state.input.charCodeAt(state.position);
  if (ch === 0x7C) {
    folding = false;
  } else if (ch === 0x3E) {
    folding = true;
  } else {
    return false;
  }
  state.kind = 'scalar';
  state.result = '';
  while (ch !== 0) {
    ch = state.input.charCodeAt(++state.position);
    if (ch === 0x2B || ch === 0x2D) {
      if (CHOMPING_CLIP === chomping) {
        chomping = ch === 0x2B ? CHOMPING_KEEP : CHOMPING_STRIP;
      } else {
        throwError(state, 'repeat of a chomping mode identifier');
      }
    } else if ((tmp = fromDecimalCode(ch)) >= 0) {
      if (tmp === 0) {
        throwError(state, 'bad explicit indentation width of a block scalar; it cannot be less than one');
      } else if (!detectedIndent) {
        textIndent = nodeIndent + tmp - 1;
        detectedIndent = true;
      } else {
        throwError(state, 'repeat of an indentation width identifier');
      }
    } else {
      break;
    }
  }
  if (is_WHITE_SPACE(ch)) {
    do {
      ch = state.input.charCodeAt(++state.position);
    } while (is_WHITE_SPACE(ch));
    if (ch === 0x23) {
      do {
        ch = state.input.charCodeAt(++state.position);
      } while (!is_EOL(ch) && ch !== 0);
    }
  }
  while (ch !== 0) {
    readLineBreak(state);
    state.lineIndent = 0;
    ch = state.input.charCodeAt(state.position);
    while ((!detectedIndent || state.lineIndent < textIndent) && ch === 0x20) {
      state.lineIndent++;
      ch = state.input.charCodeAt(++state.position);
    }
    if (!detectedIndent && state.lineIndent > textIndent) {
      textIndent = state.lineIndent;
    }
    if (is_EOL(ch)) {
      emptyLines++;
      continue;
    }
    if (state.lineIndent < textIndent) {
      if (chomping === CHOMPING_KEEP) {
        state.result += common.repeat('\n', didReadContent ? 1 + emptyLines : emptyLines);
      } else if (chomping === CHOMPING_CLIP) {
        if (didReadContent) {
          state.result += '\n';
        }
      }
      break;
    }
    if (folding) {
      if (is_WHITE_SPACE(ch)) {
        atMoreIndented = true;
        state.result += common.repeat('\n', didReadContent ? 1 + emptyLines : emptyLines);
      } else if (atMoreIndented) {
        atMoreIndented = false;
        state.result += common.repeat('\n', emptyLines + 1);
      } else if (emptyLines === 0) {
        if (didReadContent) {
          state.result += ' ';
        }
      } else {
        state.result += common.repeat('\n', emptyLines);
      }
    } else {
      state.result += common.repeat('\n', didReadContent ? 1 + emptyLines : emptyLines);
    }
    didReadContent = true;
    detectedIndent = true;
    emptyLines = 0;
    captureStart = state.position;
    while (!is_EOL(ch) && ch !== 0) {
      ch = state.input.charCodeAt(++state.position);
    }
    captureSegment(state, captureStart, state.position, false);
  }
  return true;
}
function readBlockSequence(state, nodeIndent) {
  var _line,
    _tag = state.tag,
    _anchor = state.anchor,
    _result = [],
    following,
    detected = false,
    ch;
  if (state.firstTabInLine !== -1) return false;
  if (state.anchor !== null) {
    state.anchorMap[state.anchor] = _result;
  }
  ch = state.input.charCodeAt(state.position);
  while (ch !== 0) {
    if (state.firstTabInLine !== -1) {
      state.position = state.firstTabInLine;
      throwError(state, 'tab characters must not be used in indentation');
    }
    if (ch !== 0x2D) {
      break;
    }
    following = state.input.charCodeAt(state.position + 1);
    if (!is_WS_OR_EOL(following)) {
      break;
    }
    detected = true;
    state.position++;
    if (skipSeparationSpace(state, true, -1)) {
      if (state.lineIndent <= nodeIndent) {
        _result.push(null);
        ch = state.input.charCodeAt(state.position);
        continue;
      }
    }
    _line = state.line;
    composeNode(state, nodeIndent, CONTEXT_BLOCK_IN, false, true);
    _result.push(state.result);
    skipSeparationSpace(state, true, -1);
    ch = state.input.charCodeAt(state.position);
    if ((state.line === _line || state.lineIndent > nodeIndent) && ch !== 0) {
      throwError(state, 'bad indentation of a sequence entry');
    } else if (state.lineIndent < nodeIndent) {
      break;
    }
  }
  if (detected) {
    state.tag = _tag;
    state.anchor = _anchor;
    state.kind = 'sequence';
    state.result = _result;
    return true;
  }
  return false;
}
function readBlockMapping(state, nodeIndent, flowIndent) {
  var following,
    allowCompact,
    _line,
    _keyLine,
    _keyLineStart,
    _keyPos,
    _tag = state.tag,
    _anchor = state.anchor,
    _result = {},
    overridableKeys = Object.create(null),
    keyTag = null,
    keyNode = null,
    valueNode = null,
    atExplicitKey = false,
    detected = false,
    ch;
  if (state.firstTabInLine !== -1) return false;
  if (state.anchor !== null) {
    state.anchorMap[state.anchor] = _result;
  }
  ch = state.input.charCodeAt(state.position);
  while (ch !== 0) {
    if (!atExplicitKey && state.firstTabInLine !== -1) {
      state.position = state.firstTabInLine;
      throwError(state, 'tab characters must not be used in indentation');
    }
    following = state.input.charCodeAt(state.position + 1);
    _line = state.line;
    if ((ch === 0x3F || ch === 0x3A) && is_WS_OR_EOL(following)) {
      if (ch === 0x3F) {
        if (atExplicitKey) {
          storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, null, _keyLine, _keyLineStart, _keyPos);
          keyTag = keyNode = valueNode = null;
        }
        detected = true;
        atExplicitKey = true;
        allowCompact = true;
      } else if (atExplicitKey) {
        atExplicitKey = false;
        allowCompact = true;
      } else {
        throwError(state, 'incomplete explicit mapping pair; a key node is missed; or followed by a non-tabulated empty line');
      }
      state.position += 1;
      ch = following;
    } else {
      _keyLine = state.line;
      _keyLineStart = state.lineStart;
      _keyPos = state.position;
      if (!composeNode(state, flowIndent, CONTEXT_FLOW_OUT, false, true)) {
        break;
      }
      if (state.line === _line) {
        ch = state.input.charCodeAt(state.position);
        while (is_WHITE_SPACE(ch)) {
          ch = state.input.charCodeAt(++state.position);
        }
        if (ch === 0x3A) {
          ch = state.input.charCodeAt(++state.position);
          if (!is_WS_OR_EOL(ch)) {
            throwError(state, 'a whitespace character is expected after the key-value separator within a block mapping');
          }
          if (atExplicitKey) {
            storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, null, _keyLine, _keyLineStart, _keyPos);
            keyTag = keyNode = valueNode = null;
          }
          detected = true;
          atExplicitKey = false;
          allowCompact = false;
          keyTag = state.tag;
          keyNode = state.result;
        } else if (detected) {
          throwError(state, 'can not read an implicit mapping pair; a colon is missed');
        } else {
          state.tag = _tag;
          state.anchor = _anchor;
          return true;
        }
      } else if (detected) {
        throwError(state, 'can not read a block mapping entry; a multiline key may not be an implicit key');
      } else {
        state.tag = _tag;
        state.anchor = _anchor;
        return true;
      }
    }
    if (state.line === _line || state.lineIndent > nodeIndent) {
      if (atExplicitKey) {
        _keyLine = state.line;
        _keyLineStart = state.lineStart;
        _keyPos = state.position;
      }
      if (composeNode(state, nodeIndent, CONTEXT_BLOCK_OUT, true, allowCompact)) {
        if (atExplicitKey) {
          keyNode = state.result;
        } else {
          valueNode = state.result;
        }
      }
      if (!atExplicitKey) {
        storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, valueNode, _keyLine, _keyLineStart, _keyPos);
        keyTag = keyNode = valueNode = null;
      }
      skipSeparationSpace(state, true, -1);
      ch = state.input.charCodeAt(state.position);
    }
    if ((state.line === _line || state.lineIndent > nodeIndent) && ch !== 0) {
      throwError(state, 'bad indentation of a mapping entry');
    } else if (state.lineIndent < nodeIndent) {
      break;
    }
  }
  if (atExplicitKey) {
    storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, null, _keyLine, _keyLineStart, _keyPos);
  }
  if (detected) {
    state.tag = _tag;
    state.anchor = _anchor;
    state.kind = 'mapping';
    state.result = _result;
  }
  return detected;
}
function readTagProperty(state) {
  var _position,
    isVerbatim = false,
    isNamed = false,
    tagHandle,
    tagName,
    ch;
  ch = state.input.charCodeAt(state.position);
  if (ch !== 0x21) return false;
  if (state.tag !== null) {
    throwError(state, 'duplication of a tag property');
  }
  ch = state.input.charCodeAt(++state.position);
  if (ch === 0x3C) {
    isVerbatim = true;
    ch = state.input.charCodeAt(++state.position);
  } else if (ch === 0x21) {
    isNamed = true;
    tagHandle = '!!';
    ch = state.input.charCodeAt(++state.position);
  } else {
    tagHandle = '!';
  }
  _position = state.position;
  if (isVerbatim) {
    do {
      ch = state.input.charCodeAt(++state.position);
    } while (ch !== 0 && ch !== 0x3E);
    if (state.position < state.length) {
      tagName = state.input.slice(_position, state.position);
      ch = state.input.charCodeAt(++state.position);
    } else {
      throwError(state, 'unexpected end of the stream within a verbatim tag');
    }
  } else {
    while (ch !== 0 && !is_WS_OR_EOL(ch)) {
      if (ch === 0x21) {
        if (!isNamed) {
          tagHandle = state.input.slice(_position - 1, state.position + 1);
          if (!PATTERN_TAG_HANDLE.test(tagHandle)) {
            throwError(state, 'named tag handle cannot contain such characters');
          }
          isNamed = true;
          _position = state.position + 1;
        } else {
          throwError(state, 'tag suffix cannot contain exclamation marks');
        }
      }
      ch = state.input.charCodeAt(++state.position);
    }
    tagName = state.input.slice(_position, state.position);
    if (PATTERN_FLOW_INDICATORS.test(tagName)) {
      throwError(state, 'tag suffix cannot contain flow indicator characters');
    }
  }
  if (tagName && !PATTERN_TAG_URI.test(tagName)) {
    throwError(state, 'tag name cannot contain such characters: ' + tagName);
  }
  try {
    tagName = decodeURIComponent(tagName);
  } catch (err) {
    throwError(state, 'tag name is malformed: ' + tagName);
  }
  if (isVerbatim) {
    state.tag = tagName;
  } else if (_hasOwnProperty$1.call(state.tagMap, tagHandle)) {
    state.tag = state.tagMap[tagHandle] + tagName;
  } else if (tagHandle === '!') {
    state.tag = '!' + tagName;
  } else if (tagHandle === '!!') {
    state.tag = 'tag:yaml.org,2002:' + tagName;
  } else {
    throwError(state, 'undeclared tag handle "' + tagHandle + '"');
  }
  return true;
}
function readAnchorProperty(state) {
  var _position, ch;
  ch = state.input.charCodeAt(state.position);
  if (ch !== 0x26) return false;
  if (state.anchor !== null) {
    throwError(state, 'duplication of an anchor property');
  }
  ch = state.input.charCodeAt(++state.position);
  _position = state.position;
  while (ch !== 0 && !is_WS_OR_EOL(ch) && !is_FLOW_INDICATOR(ch)) {
    ch = state.input.charCodeAt(++state.position);
  }
  if (state.position === _position) {
    throwError(state, 'name of an anchor node must contain at least one character');
  }
  state.anchor = state.input.slice(_position, state.position);
  return true;
}
function readAlias(state) {
  var _position, alias, ch;
  ch = state.input.charCodeAt(state.position);
  if (ch !== 0x2A) return false;
  ch = state.input.charCodeAt(++state.position);
  _position = state.position;
  while (ch !== 0 && !is_WS_OR_EOL(ch) && !is_FLOW_INDICATOR(ch)) {
    ch = state.input.charCodeAt(++state.position);
  }
  if (state.position === _position) {
    throwError(state, 'name of an alias node must contain at least one character');
  }
  alias = state.input.slice(_position, state.position);
  if (!_hasOwnProperty$1.call(state.anchorMap, alias)) {
    throwError(state, 'unidentified alias "' + alias + '"');
  }
  state.result = state.anchorMap[alias];
  skipSeparationSpace(state, true, -1);
  return true;
}
function composeNode(state, parentIndent, nodeContext, allowToSeek, allowCompact) {
  var allowBlockStyles,
    allowBlockScalars,
    allowBlockCollections,
    indentStatus = 1,
    atNewLine = false,
    hasContent = false,
    typeIndex,
    typeQuantity,
    typeList,
    type,
    flowIndent,
    blockIndent;
  if (state.listener !== null) {
    state.listener('open', state);
  }
  state.tag = null;
  state.anchor = null;
  state.kind = null;
  state.result = null;
  allowBlockStyles = allowBlockScalars = allowBlockCollections = CONTEXT_BLOCK_OUT === nodeContext || CONTEXT_BLOCK_IN === nodeContext;
  if (allowToSeek) {
    if (skipSeparationSpace(state, true, -1)) {
      atNewLine = true;
      if (state.lineIndent > parentIndent) {
        indentStatus = 1;
      } else if (state.lineIndent === parentIndent) {
        indentStatus = 0;
      } else if (state.lineIndent < parentIndent) {
        indentStatus = -1;
      }
    }
  }
  if (indentStatus === 1) {
    while (readTagProperty(state) || readAnchorProperty(state)) {
      if (skipSeparationSpace(state, true, -1)) {
        atNewLine = true;
        allowBlockCollections = allowBlockStyles;
        if (state.lineIndent > parentIndent) {
          indentStatus = 1;
        } else if (state.lineIndent === parentIndent) {
          indentStatus = 0;
        } else if (state.lineIndent < parentIndent) {
          indentStatus = -1;
        }
      } else {
        allowBlockCollections = false;
      }
    }
  }
  if (allowBlockCollections) {
    allowBlockCollections = atNewLine || allowCompact;
  }
  if (indentStatus === 1 || CONTEXT_BLOCK_OUT === nodeContext) {
    if (CONTEXT_FLOW_IN === nodeContext || CONTEXT_FLOW_OUT === nodeContext) {
      flowIndent = parentIndent;
    } else {
      flowIndent = parentIndent + 1;
    }
    blockIndent = state.position - state.lineStart;
    if (indentStatus === 1) {
      if (allowBlockCollections && (readBlockSequence(state, blockIndent) || readBlockMapping(state, blockIndent, flowIndent)) || readFlowCollection(state, flowIndent)) {
        hasContent = true;
      } else {
        if (allowBlockScalars && readBlockScalar(state, flowIndent) || readSingleQuotedScalar(state, flowIndent) || readDoubleQuotedScalar(state, flowIndent)) {
          hasContent = true;
        } else if (readAlias(state)) {
          hasContent = true;
          if (state.tag !== null || state.anchor !== null) {
            throwError(state, 'alias node should not have any properties');
          }
        } else if (readPlainScalar(state, flowIndent, CONTEXT_FLOW_IN === nodeContext)) {
          hasContent = true;
          if (state.tag === null) {
            state.tag = '?';
          }
        }
        if (state.anchor !== null) {
          state.anchorMap[state.anchor] = state.result;
        }
      }
    } else if (indentStatus === 0) {
      hasContent = allowBlockCollections && readBlockSequence(state, blockIndent);
    }
  }
  if (state.tag === null) {
    if (state.anchor !== null) {
      state.anchorMap[state.anchor] = state.result;
    }
  } else if (state.tag === '?') {
    if (state.result !== null && state.kind !== 'scalar') {
      throwError(state, 'unacceptable node kind for !<?> tag; it should be "scalar", not "' + state.kind + '"');
    }
    for (typeIndex = 0, typeQuantity = state.implicitTypes.length; typeIndex < typeQuantity; typeIndex += 1) {
      type = state.implicitTypes[typeIndex];
      if (type.resolve(state.result)) {
        state.result = type.construct(state.result);
        state.tag = type.tag;
        if (state.anchor !== null) {
          state.anchorMap[state.anchor] = state.result;
        }
        break;
      }
    }
  } else if (state.tag !== '!') {
    if (_hasOwnProperty$1.call(state.typeMap[state.kind || 'fallback'], state.tag)) {
      type = state.typeMap[state.kind || 'fallback'][state.tag];
    } else {
      type = null;
      typeList = state.typeMap.multi[state.kind || 'fallback'];
      for (typeIndex = 0, typeQuantity = typeList.length; typeIndex < typeQuantity; typeIndex += 1) {
        if (state.tag.slice(0, typeList[typeIndex].tag.length) === typeList[typeIndex].tag) {
          type = typeList[typeIndex];
          break;
        }
      }
    }
    if (!type) {
      throwError(state, 'unknown tag !<' + state.tag + '>');
    }
    if (state.result !== null && type.kind !== state.kind) {
      throwError(state, 'unacceptable node kind for !<' + state.tag + '> tag; it should be "' + type.kind + '", not "' + state.kind + '"');
    }
    if (!type.resolve(state.result, state.tag)) {
      throwError(state, 'cannot resolve a node with !<' + state.tag + '> explicit tag');
    } else {
      state.result = type.construct(state.result, state.tag);
      if (state.anchor !== null) {
        state.anchorMap[state.anchor] = state.result;
      }
    }
  }
  if (state.listener !== null) {
    state.listener('close', state);
  }
  return state.tag !== null || state.anchor !== null || hasContent;
}
function readDocument(state) {
  var documentStart = state.position,
    _position,
    directiveName,
    directiveArgs,
    hasDirectives = false,
    ch;
  state.version = null;
  state.checkLineBreaks = state.legacy;
  state.tagMap = Object.create(null);
  state.anchorMap = Object.create(null);
  while ((ch = state.input.charCodeAt(state.position)) !== 0) {
    skipSeparationSpace(state, true, -1);
    ch = state.input.charCodeAt(state.position);
    if (state.lineIndent > 0 || ch !== 0x25) {
      break;
    }
    hasDirectives = true;
    ch = state.input.charCodeAt(++state.position);
    _position = state.position;
    while (ch !== 0 && !is_WS_OR_EOL(ch)) {
      ch = state.input.charCodeAt(++state.position);
    }
    directiveName = state.input.slice(_position, state.position);
    directiveArgs = [];
    if (directiveName.length < 1) {
      throwError(state, 'directive name must not be less than one character in length');
    }
    while (ch !== 0) {
      while (is_WHITE_SPACE(ch)) {
        ch = state.input.charCodeAt(++state.position);
      }
      if (ch === 0x23) {
        do {
          ch = state.input.charCodeAt(++state.position);
        } while (ch !== 0 && !is_EOL(ch));
        break;
      }
      if (is_EOL(ch)) break;
      _position = state.position;
      while (ch !== 0 && !is_WS_OR_EOL(ch)) {
        ch = state.input.charCodeAt(++state.position);
      }
      directiveArgs.push(state.input.slice(_position, state.position));
    }
    if (ch !== 0) readLineBreak(state);
    if (_hasOwnProperty$1.call(directiveHandlers, directiveName)) {
      directiveHandlers[directiveName](state, directiveName, directiveArgs);
    } else {
      throwWarning(state, 'unknown document directive "' + directiveName + '"');
    }
  }
  skipSeparationSpace(state, true, -1);
  if (state.lineIndent === 0 && state.input.charCodeAt(state.position) === 0x2D && state.input.charCodeAt(state.position + 1) === 0x2D && state.input.charCodeAt(state.position + 2) === 0x2D) {
    state.position += 3;
    skipSeparationSpace(state, true, -1);
  } else if (hasDirectives) {
    throwError(state, 'directives end mark is expected');
  }
  composeNode(state, state.lineIndent - 1, CONTEXT_BLOCK_OUT, false, true);
  skipSeparationSpace(state, true, -1);
  if (state.checkLineBreaks && PATTERN_NON_ASCII_LINE_BREAKS.test(state.input.slice(documentStart, state.position))) {
    throwWarning(state, 'non-ASCII line breaks are interpreted as content');
  }
  state.documents.push(state.result);
  if (state.position === state.lineStart && testDocumentSeparator(state)) {
    if (state.input.charCodeAt(state.position) === 0x2E) {
      state.position += 3;
      skipSeparationSpace(state, true, -1);
    }
    return;
  }
  if (state.position < state.length - 1) {
    throwError(state, 'end of the stream or a document separator is expected');
  } else {
    return;
  }
}
function loadDocuments(input, options) {
  input = String(input);
  options = options || {};
  if (input.length !== 0) {
    if (input.charCodeAt(input.length - 1) !== 0x0A && input.charCodeAt(input.length - 1) !== 0x0D) {
      input += '\n';
    }
    if (input.charCodeAt(0) === 0xFEFF) {
      input = input.slice(1);
    }
  }
  var state = new State$1(input, options);
  var nullpos = input.indexOf('\0');
  if (nullpos !== -1) {
    state.position = nullpos;
    throwError(state, 'null byte is not allowed in input');
  }
  state.input += '\0';
  while (state.input.charCodeAt(state.position) === 0x20) {
    state.lineIndent += 1;
    state.position += 1;
  }
  while (state.position < state.length - 1) {
    readDocument(state);
  }
  return state.documents;
}
function loadAll$1(input, iterator, options) {
  if (iterator !== null && _typeof(iterator) === 'object' && typeof options === 'undefined') {
    options = iterator;
    iterator = null;
  }
  var documents = loadDocuments(input, options);
  if (typeof iterator !== 'function') {
    return documents;
  }
  for (var index = 0, length = documents.length; index < length; index += 1) {
    iterator(documents[index]);
  }
}
function load$1(input, options) {
  var documents = loadDocuments(input, options);
  if (documents.length === 0) {
    return undefined;
  } else if (documents.length === 1) {
    return documents[0];
  }
  throw new exception('expected a single document in the stream, but found more');
}
var loadAll_1 = loadAll$1;
var load_1 = load$1;
var loader = {
  loadAll: loadAll_1,
  load: load_1
};
var _toString = Object.prototype.toString;
var _hasOwnProperty = Object.prototype.hasOwnProperty;
var CHAR_BOM = 0xFEFF;
var CHAR_TAB = 0x09;
var CHAR_LINE_FEED = 0x0A;
var CHAR_CARRIAGE_RETURN = 0x0D;
var CHAR_SPACE = 0x20;
var CHAR_EXCLAMATION = 0x21;
var CHAR_DOUBLE_QUOTE = 0x22;
var CHAR_SHARP = 0x23;
var CHAR_PERCENT = 0x25;
var CHAR_AMPERSAND = 0x26;
var CHAR_SINGLE_QUOTE = 0x27;
var CHAR_ASTERISK = 0x2A;
var CHAR_COMMA = 0x2C;
var CHAR_MINUS = 0x2D;
var CHAR_COLON = 0x3A;
var CHAR_EQUALS = 0x3D;
var CHAR_GREATER_THAN = 0x3E;
var CHAR_QUESTION = 0x3F;
var CHAR_COMMERCIAL_AT = 0x40;
var CHAR_LEFT_SQUARE_BRACKET = 0x5B;
var CHAR_RIGHT_SQUARE_BRACKET = 0x5D;
var CHAR_GRAVE_ACCENT = 0x60;
var CHAR_LEFT_CURLY_BRACKET = 0x7B;
var CHAR_VERTICAL_LINE = 0x7C;
var CHAR_RIGHT_CURLY_BRACKET = 0x7D;
var ESCAPE_SEQUENCES = {};
ESCAPE_SEQUENCES[0x00] = '\\0';
ESCAPE_SEQUENCES[0x07] = '\\a';
ESCAPE_SEQUENCES[0x08] = '\\b';
ESCAPE_SEQUENCES[0x09] = '\\t';
ESCAPE_SEQUENCES[0x0A] = '\\n';
ESCAPE_SEQUENCES[0x0B] = '\\v';
ESCAPE_SEQUENCES[0x0C] = '\\f';
ESCAPE_SEQUENCES[0x0D] = '\\r';
ESCAPE_SEQUENCES[0x1B] = '\\e';
ESCAPE_SEQUENCES[0x22] = '\\"';
ESCAPE_SEQUENCES[0x5C] = '\\\\';
ESCAPE_SEQUENCES[0x85] = '\\N';
ESCAPE_SEQUENCES[0xA0] = '\\_';
ESCAPE_SEQUENCES[0x2028] = '\\L';
ESCAPE_SEQUENCES[0x2029] = '\\P';
var DEPRECATED_BOOLEANS_SYNTAX = ['y', 'Y', 'yes', 'Yes', 'YES', 'on', 'On', 'ON', 'n', 'N', 'no', 'No', 'NO', 'off', 'Off', 'OFF'];
var DEPRECATED_BASE60_SYNTAX = /^[-+]?[0-9_]+(?::[0-9_]+)+(?:\.[0-9_]*)?$/;
function compileStyleMap(schema, map) {
  var result, keys, index, length, tag, style, type;
  if (map === null) return {};
  result = {};
  keys = Object.keys(map);
  for (index = 0, length = keys.length; index < length; index += 1) {
    tag = keys[index];
    style = String(map[tag]);
    if (tag.slice(0, 2) === '!!') {
      tag = 'tag:yaml.org,2002:' + tag.slice(2);
    }
    type = schema.compiledTypeMap['fallback'][tag];
    if (type && _hasOwnProperty.call(type.styleAliases, style)) {
      style = type.styleAliases[style];
    }
    result[tag] = style;
  }
  return result;
}
function encodeHex(character) {
  var string, handle, length;
  string = character.toString(16).toUpperCase();
  if (character <= 0xFF) {
    handle = 'x';
    length = 2;
  } else if (character <= 0xFFFF) {
    handle = 'u';
    length = 4;
  } else if (character <= 0xFFFFFFFF) {
    handle = 'U';
    length = 8;
  } else {
    throw new exception('code point within a string may not be greater than 0xFFFFFFFF');
  }
  return '\\' + handle + common.repeat('0', length - string.length) + string;
}
var QUOTING_TYPE_SINGLE = 1,
  QUOTING_TYPE_DOUBLE = 2;
function State(options) {
  this.schema = options['schema'] || _default;
  this.indent = Math.max(1, options['indent'] || 2);
  this.noArrayIndent = options['noArrayIndent'] || false;
  this.skipInvalid = options['skipInvalid'] || false;
  this.flowLevel = common.isNothing(options['flowLevel']) ? -1 : options['flowLevel'];
  this.styleMap = compileStyleMap(this.schema, options['styles'] || null);
  this.sortKeys = options['sortKeys'] || false;
  this.lineWidth = options['lineWidth'] || 80;
  this.noRefs = options['noRefs'] || false;
  this.noCompatMode = options['noCompatMode'] || false;
  this.condenseFlow = options['condenseFlow'] || false;
  this.quotingType = options['quotingType'] === '"' ? QUOTING_TYPE_DOUBLE : QUOTING_TYPE_SINGLE;
  this.forceQuotes = options['forceQuotes'] || false;
  this.replacer = typeof options['replacer'] === 'function' ? options['replacer'] : null;
  this.implicitTypes = this.schema.compiledImplicit;
  this.explicitTypes = this.schema.compiledExplicit;
  this.tag = null;
  this.result = '';
  this.duplicates = [];
  this.usedDuplicates = null;
}
function indentString(string, spaces) {
  var ind = common.repeat(' ', spaces),
    position = 0,
    next = -1,
    result = '',
    line,
    length = string.length;
  while (position < length) {
    next = string.indexOf('\n', position);
    if (next === -1) {
      line = string.slice(position);
      position = length;
    } else {
      line = string.slice(position, next + 1);
      position = next + 1;
    }
    if (line.length && line !== '\n') result += ind;
    result += line;
  }
  return result;
}
function generateNextLine(state, level) {
  return '\n' + common.repeat(' ', state.indent * level);
}
function testImplicitResolving(state, str) {
  var index, length, type;
  for (index = 0, length = state.implicitTypes.length; index < length; index += 1) {
    type = state.implicitTypes[index];
    if (type.resolve(str)) {
      return true;
    }
  }
  return false;
}
function isWhitespace(c) {
  return c === CHAR_SPACE || c === CHAR_TAB;
}
function isPrintable(c) {
  return 0x00020 <= c && c <= 0x00007E || 0x000A1 <= c && c <= 0x00D7FF && c !== 0x2028 && c !== 0x2029 || 0x0E000 <= c && c <= 0x00FFFD && c !== CHAR_BOM || 0x10000 <= c && c <= 0x10FFFF;
}
function isNsCharOrWhitespace(c) {
  return isPrintable(c) && c !== CHAR_BOM && c !== CHAR_CARRIAGE_RETURN && c !== CHAR_LINE_FEED;
}
function isPlainSafe(c, prev, inblock) {
  var cIsNsCharOrWhitespace = isNsCharOrWhitespace(c);
  var cIsNsChar = cIsNsCharOrWhitespace && !isWhitespace(c);
  return (inblock ? cIsNsCharOrWhitespace : cIsNsCharOrWhitespace && c !== CHAR_COMMA && c !== CHAR_LEFT_SQUARE_BRACKET && c !== CHAR_RIGHT_SQUARE_BRACKET && c !== CHAR_LEFT_CURLY_BRACKET && c !== CHAR_RIGHT_CURLY_BRACKET) && c !== CHAR_SHARP && !(prev === CHAR_COLON && !cIsNsChar) || isNsCharOrWhitespace(prev) && !isWhitespace(prev) && c === CHAR_SHARP || prev === CHAR_COLON && cIsNsChar;
}
function isPlainSafeFirst(c) {
  return isPrintable(c) && c !== CHAR_BOM && !isWhitespace(c) && c !== CHAR_MINUS && c !== CHAR_QUESTION && c !== CHAR_COLON && c !== CHAR_COMMA && c !== CHAR_LEFT_SQUARE_BRACKET && c !== CHAR_RIGHT_SQUARE_BRACKET && c !== CHAR_LEFT_CURLY_BRACKET && c !== CHAR_RIGHT_CURLY_BRACKET && c !== CHAR_SHARP && c !== CHAR_AMPERSAND && c !== CHAR_ASTERISK && c !== CHAR_EXCLAMATION && c !== CHAR_VERTICAL_LINE && c !== CHAR_EQUALS && c !== CHAR_GREATER_THAN && c !== CHAR_SINGLE_QUOTE && c !== CHAR_DOUBLE_QUOTE && c !== CHAR_PERCENT && c !== CHAR_COMMERCIAL_AT && c !== CHAR_GRAVE_ACCENT;
}
function isPlainSafeLast(c) {
  return !isWhitespace(c) && c !== CHAR_COLON;
}
function codePointAt(string, pos) {
  var first = string.charCodeAt(pos),
    second;
  if (first >= 0xD800 && first <= 0xDBFF && pos + 1 < string.length) {
    second = string.charCodeAt(pos + 1);
    if (second >= 0xDC00 && second <= 0xDFFF) {
      return (first - 0xD800) * 0x400 + second - 0xDC00 + 0x10000;
    }
  }
  return first;
}
function needIndentIndicator(string) {
  var leadingSpaceRe = /^\n* /;
  return leadingSpaceRe.test(string);
}
var STYLE_PLAIN = 1,
  STYLE_SINGLE = 2,
  STYLE_LITERAL = 3,
  STYLE_FOLDED = 4,
  STYLE_DOUBLE = 5;
function chooseScalarStyle(string, singleLineOnly, indentPerLevel, lineWidth, testAmbiguousType, quotingType, forceQuotes, inblock) {
  var i;
  var char = 0;
  var prevChar = null;
  var hasLineBreak = false;
  var hasFoldableLine = false;
  var shouldTrackWidth = lineWidth !== -1;
  var previousLineBreak = -1;
  var plain = isPlainSafeFirst(codePointAt(string, 0)) && isPlainSafeLast(codePointAt(string, string.length - 1));
  if (singleLineOnly || forceQuotes) {
    for (i = 0; i < string.length; char >= 0x10000 ? i += 2 : i++) {
      char = codePointAt(string, i);
      if (!isPrintable(char)) {
        return STYLE_DOUBLE;
      }
      plain = plain && isPlainSafe(char, prevChar, inblock);
      prevChar = char;
    }
  } else {
    for (i = 0; i < string.length; char >= 0x10000 ? i += 2 : i++) {
      char = codePointAt(string, i);
      if (char === CHAR_LINE_FEED) {
        hasLineBreak = true;
        if (shouldTrackWidth) {
          hasFoldableLine = hasFoldableLine || i - previousLineBreak - 1 > lineWidth && string[previousLineBreak + 1] !== ' ';
          previousLineBreak = i;
        }
      } else if (!isPrintable(char)) {
        return STYLE_DOUBLE;
      }
      plain = plain && isPlainSafe(char, prevChar, inblock);
      prevChar = char;
    }
    hasFoldableLine = hasFoldableLine || shouldTrackWidth && i - previousLineBreak - 1 > lineWidth && string[previousLineBreak + 1] !== ' ';
  }
  if (!hasLineBreak && !hasFoldableLine) {
    if (plain && !forceQuotes && !testAmbiguousType(string)) {
      return STYLE_PLAIN;
    }
    return quotingType === QUOTING_TYPE_DOUBLE ? STYLE_DOUBLE : STYLE_SINGLE;
  }
  if (indentPerLevel > 9 && needIndentIndicator(string)) {
    return STYLE_DOUBLE;
  }
  if (!forceQuotes) {
    return hasFoldableLine ? STYLE_FOLDED : STYLE_LITERAL;
  }
  return quotingType === QUOTING_TYPE_DOUBLE ? STYLE_DOUBLE : STYLE_SINGLE;
}
function writeScalar(state, string, level, iskey, inblock) {
  state.dump = function () {
    if (string.length === 0) {
      return state.quotingType === QUOTING_TYPE_DOUBLE ? '""' : "''";
    }
    if (!state.noCompatMode) {
      if (DEPRECATED_BOOLEANS_SYNTAX.indexOf(string) !== -1 || DEPRECATED_BASE60_SYNTAX.test(string)) {
        return state.quotingType === QUOTING_TYPE_DOUBLE ? '"' + string + '"' : "'" + string + "'";
      }
    }
    var indent = state.indent * Math.max(1, level);
    var lineWidth = state.lineWidth === -1 ? -1 : Math.max(Math.min(state.lineWidth, 40), state.lineWidth - indent);
    var singleLineOnly = iskey || state.flowLevel > -1 && level >= state.flowLevel;
    function testAmbiguity(string) {
      return testImplicitResolving(state, string);
    }
    switch (chooseScalarStyle(string, singleLineOnly, state.indent, lineWidth, testAmbiguity, state.quotingType, state.forceQuotes && !iskey, inblock)) {
      case STYLE_PLAIN:
        return string;
      case STYLE_SINGLE:
        return "'" + string.replace(/'/g, "''") + "'";
      case STYLE_LITERAL:
        return '|' + blockHeader(string, state.indent) + dropEndingNewline(indentString(string, indent));
      case STYLE_FOLDED:
        return '>' + blockHeader(string, state.indent) + dropEndingNewline(indentString(foldString(string, lineWidth), indent));
      case STYLE_DOUBLE:
        return '"' + escapeString(string) + '"';
      default:
        throw new exception('impossible error: invalid scalar style');
    }
  }();
}
function blockHeader(string, indentPerLevel) {
  var indentIndicator = needIndentIndicator(string) ? String(indentPerLevel) : '';
  var clip = string[string.length - 1] === '\n';
  var keep = clip && (string[string.length - 2] === '\n' || string === '\n');
  var chomp = keep ? '+' : clip ? '' : '-';
  return indentIndicator + chomp + '\n';
}
function dropEndingNewline(string) {
  return string[string.length - 1] === '\n' ? string.slice(0, -1) : string;
}
function foldString(string, width) {
  var lineRe = /(\n+)([^\n]*)/g;
  var result = function () {
    var nextLF = string.indexOf('\n');
    nextLF = nextLF !== -1 ? nextLF : string.length;
    lineRe.lastIndex = nextLF;
    return foldLine(string.slice(0, nextLF), width);
  }();
  var prevMoreIndented = string[0] === '\n' || string[0] === ' ';
  var moreIndented;
  var match;
  while (match = lineRe.exec(string)) {
    var prefix = match[1],
      line = match[2];
    moreIndented = line[0] === ' ';
    result += prefix + (!prevMoreIndented && !moreIndented && line !== '' ? '\n' : '') + foldLine(line, width);
    prevMoreIndented = moreIndented;
  }
  return result;
}
function foldLine(line, width) {
  if (line === '' || line[0] === ' ') return line;
  var breakRe = / [^ ]/g;
  var match;
  var start = 0,
    end,
    curr = 0,
    next = 0;
  var result = '';
  while (match = breakRe.exec(line)) {
    next = match.index;
    if (next - start > width) {
      end = curr > start ? curr : next;
      result += '\n' + line.slice(start, end);
      start = end + 1;
    }
    curr = next;
  }
  result += '\n';
  if (line.length - start > width && curr > start) {
    result += line.slice(start, curr) + '\n' + line.slice(curr + 1);
  } else {
    result += line.slice(start);
  }
  return result.slice(1);
}
function escapeString(string) {
  var result = '';
  var char = 0;
  var escapeSeq;
  for (var i = 0; i < string.length; char >= 0x10000 ? i += 2 : i++) {
    char = codePointAt(string, i);
    escapeSeq = ESCAPE_SEQUENCES[char];
    if (!escapeSeq && isPrintable(char)) {
      result += string[i];
      if (char >= 0x10000) result += string[i + 1];
    } else {
      result += escapeSeq || encodeHex(char);
    }
  }
  return result;
}
function writeFlowSequence(state, level, object) {
  var _result = '',
    _tag = state.tag,
    index,
    length,
    value;
  for (index = 0, length = object.length; index < length; index += 1) {
    value = object[index];
    if (state.replacer) {
      value = state.replacer.call(object, String(index), value);
    }
    if (writeNode(state, level, value, false, false) || typeof value === 'undefined' && writeNode(state, level, null, false, false)) {
      if (_result !== '') _result += ',' + (!state.condenseFlow ? ' ' : '');
      _result += state.dump;
    }
  }
  state.tag = _tag;
  state.dump = '[' + _result + ']';
}
function writeBlockSequence(state, level, object, compact) {
  var _result = '',
    _tag = state.tag,
    index,
    length,
    value;
  for (index = 0, length = object.length; index < length; index += 1) {
    value = object[index];
    if (state.replacer) {
      value = state.replacer.call(object, String(index), value);
    }
    if (writeNode(state, level + 1, value, true, true, false, true) || typeof value === 'undefined' && writeNode(state, level + 1, null, true, true, false, true)) {
      if (!compact || _result !== '') {
        _result += generateNextLine(state, level);
      }
      if (state.dump && CHAR_LINE_FEED === state.dump.charCodeAt(0)) {
        _result += '-';
      } else {
        _result += '- ';
      }
      _result += state.dump;
    }
  }
  state.tag = _tag;
  state.dump = _result || '[]';
}
function writeFlowMapping(state, level, object) {
  var _result = '',
    _tag = state.tag,
    objectKeyList = Object.keys(object),
    index,
    length,
    objectKey,
    objectValue,
    pairBuffer;
  for (index = 0, length = objectKeyList.length; index < length; index += 1) {
    pairBuffer = '';
    if (_result !== '') pairBuffer += ', ';
    if (state.condenseFlow) pairBuffer += '"';
    objectKey = objectKeyList[index];
    objectValue = object[objectKey];
    if (state.replacer) {
      objectValue = state.replacer.call(object, objectKey, objectValue);
    }
    if (!writeNode(state, level, objectKey, false, false)) {
      continue;
    }
    if (state.dump.length > 1024) pairBuffer += '? ';
    pairBuffer += state.dump + (state.condenseFlow ? '"' : '') + ':' + (state.condenseFlow ? '' : ' ');
    if (!writeNode(state, level, objectValue, false, false)) {
      continue;
    }
    pairBuffer += state.dump;
    _result += pairBuffer;
  }
  state.tag = _tag;
  state.dump = '{' + _result + '}';
}
function writeBlockMapping(state, level, object, compact) {
  var _result = '',
    _tag = state.tag,
    objectKeyList = Object.keys(object),
    index,
    length,
    objectKey,
    objectValue,
    explicitPair,
    pairBuffer;
  if (state.sortKeys === true) {
    objectKeyList.sort();
  } else if (typeof state.sortKeys === 'function') {
    objectKeyList.sort(state.sortKeys);
  } else if (state.sortKeys) {
    throw new exception('sortKeys must be a boolean or a function');
  }
  for (index = 0, length = objectKeyList.length; index < length; index += 1) {
    pairBuffer = '';
    if (!compact || _result !== '') {
      pairBuffer += generateNextLine(state, level);
    }
    objectKey = objectKeyList[index];
    objectValue = object[objectKey];
    if (state.replacer) {
      objectValue = state.replacer.call(object, objectKey, objectValue);
    }
    if (!writeNode(state, level + 1, objectKey, true, true, true)) {
      continue;
    }
    explicitPair = state.tag !== null && state.tag !== '?' || state.dump && state.dump.length > 1024;
    if (explicitPair) {
      if (state.dump && CHAR_LINE_FEED === state.dump.charCodeAt(0)) {
        pairBuffer += '?';
      } else {
        pairBuffer += '? ';
      }
    }
    pairBuffer += state.dump;
    if (explicitPair) {
      pairBuffer += generateNextLine(state, level);
    }
    if (!writeNode(state, level + 1, objectValue, true, explicitPair)) {
      continue;
    }
    if (state.dump && CHAR_LINE_FEED === state.dump.charCodeAt(0)) {
      pairBuffer += ':';
    } else {
      pairBuffer += ': ';
    }
    pairBuffer += state.dump;
    _result += pairBuffer;
  }
  state.tag = _tag;
  state.dump = _result || '{}';
}
function detectType(state, object, explicit) {
  var _result, typeList, index, length, type, style;
  typeList = explicit ? state.explicitTypes : state.implicitTypes;
  for (index = 0, length = typeList.length; index < length; index += 1) {
    type = typeList[index];
    if ((type.instanceOf || type.predicate) && (!type.instanceOf || _typeof(object) === 'object' && object instanceof type.instanceOf) && (!type.predicate || type.predicate(object))) {
      if (explicit) {
        if (type.multi && type.representName) {
          state.tag = type.representName(object);
        } else {
          state.tag = type.tag;
        }
      } else {
        state.tag = '?';
      }
      if (type.represent) {
        style = state.styleMap[type.tag] || type.defaultStyle;
        if (_toString.call(type.represent) === '[object Function]') {
          _result = type.represent(object, style);
        } else if (_hasOwnProperty.call(type.represent, style)) {
          _result = type.represent[style](object, style);
        } else {
          throw new exception('!<' + type.tag + '> tag resolver accepts not "' + style + '" style');
        }
        state.dump = _result;
      }
      return true;
    }
  }
  return false;
}
function writeNode(state, level, object, block, compact, iskey, isblockseq) {
  state.tag = null;
  state.dump = object;
  if (!detectType(state, object, false)) {
    detectType(state, object, true);
  }
  var type = _toString.call(state.dump);
  var inblock = block;
  var tagStr;
  if (block) {
    block = state.flowLevel < 0 || state.flowLevel > level;
  }
  var objectOrArray = type === '[object Object]' || type === '[object Array]',
    duplicateIndex,
    duplicate;
  if (objectOrArray) {
    duplicateIndex = state.duplicates.indexOf(object);
    duplicate = duplicateIndex !== -1;
  }
  if (state.tag !== null && state.tag !== '?' || duplicate || state.indent !== 2 && level > 0) {
    compact = false;
  }
  if (duplicate && state.usedDuplicates[duplicateIndex]) {
    state.dump = '*ref_' + duplicateIndex;
  } else {
    if (objectOrArray && duplicate && !state.usedDuplicates[duplicateIndex]) {
      state.usedDuplicates[duplicateIndex] = true;
    }
    if (type === '[object Object]') {
      if (block && Object.keys(state.dump).length !== 0) {
        writeBlockMapping(state, level, state.dump, compact);
        if (duplicate) {
          state.dump = '&ref_' + duplicateIndex + state.dump;
        }
      } else {
        writeFlowMapping(state, level, state.dump);
        if (duplicate) {
          state.dump = '&ref_' + duplicateIndex + ' ' + state.dump;
        }
      }
    } else if (type === '[object Array]') {
      if (block && state.dump.length !== 0) {
        if (state.noArrayIndent && !isblockseq && level > 0) {
          writeBlockSequence(state, level - 1, state.dump, compact);
        } else {
          writeBlockSequence(state, level, state.dump, compact);
        }
        if (duplicate) {
          state.dump = '&ref_' + duplicateIndex + state.dump;
        }
      } else {
        writeFlowSequence(state, level, state.dump);
        if (duplicate) {
          state.dump = '&ref_' + duplicateIndex + ' ' + state.dump;
        }
      }
    } else if (type === '[object String]') {
      if (state.tag !== '?') {
        writeScalar(state, state.dump, level, iskey, inblock);
      }
    } else if (type === '[object Undefined]') {
      return false;
    } else {
      if (state.skipInvalid) return false;
      throw new exception('unacceptable kind of an object to dump ' + type);
    }
    if (state.tag !== null && state.tag !== '?') {
      tagStr = encodeURI(state.tag[0] === '!' ? state.tag.slice(1) : state.tag).replace(/!/g, '%21');
      if (state.tag[0] === '!') {
        tagStr = '!' + tagStr;
      } else if (tagStr.slice(0, 18) === 'tag:yaml.org,2002:') {
        tagStr = '!!' + tagStr.slice(18);
      } else {
        tagStr = '!<' + tagStr + '>';
      }
      state.dump = tagStr + ' ' + state.dump;
    }
  }
  return true;
}
function getDuplicateReferences(object, state) {
  var objects = [],
    duplicatesIndexes = [],
    index,
    length;
  inspectNode(object, objects, duplicatesIndexes);
  for (index = 0, length = duplicatesIndexes.length; index < length; index += 1) {
    state.duplicates.push(objects[duplicatesIndexes[index]]);
  }
  state.usedDuplicates = new Array(length);
}
function inspectNode(object, objects, duplicatesIndexes) {
  var objectKeyList, index, length;
  if (object !== null && _typeof(object) === 'object') {
    index = objects.indexOf(object);
    if (index !== -1) {
      if (duplicatesIndexes.indexOf(index) === -1) {
        duplicatesIndexes.push(index);
      }
    } else {
      objects.push(object);
      if (Array.isArray(object)) {
        for (index = 0, length = object.length; index < length; index += 1) {
          inspectNode(object[index], objects, duplicatesIndexes);
        }
      } else {
        objectKeyList = Object.keys(object);
        for (index = 0, length = objectKeyList.length; index < length; index += 1) {
          inspectNode(object[objectKeyList[index]], objects, duplicatesIndexes);
        }
      }
    }
  }
}
function dump$1(input, options) {
  options = options || {};
  var state = new State(options);
  if (!state.noRefs) getDuplicateReferences(input, state);
  var value = input;
  if (state.replacer) {
    value = state.replacer.call({
      '': value
    }, '', value);
  }
  if (writeNode(state, 0, value, true, true)) return state.dump + '\n';
  return '';
}
var dump_1 = dump$1;
var dumper = {
  dump: dump_1
};
function renamed(from, to) {
  return function () {
    throw new Error('Function yaml.' + from + ' is removed in js-yaml 4. ' + 'Use yaml.' + to + ' instead, which is now safe by default.');
  };
}
var Type = type;
var Schema = schema;
var FAILSAFE_SCHEMA = failsafe;
var JSON_SCHEMA = json;
var CORE_SCHEMA = core;
var DEFAULT_SCHEMA = _default;
var load = loader.load;
var loadAll = loader.loadAll;
var dump = dumper.dump;
var YAMLException = exception;
var types = {
  binary: binary,
  float: float,
  map: map,
  null: _null,
  pairs: pairs,
  set: set,
  timestamp: timestamp,
  bool: bool,
  int: int,
  merge: merge,
  omap: omap,
  seq: seq,
  str: str
};
var safeLoad = renamed('safeLoad', 'load');
var safeLoadAll = renamed('safeLoadAll', 'loadAll');
var safeDump = renamed('safeDump', 'dump');
var jsYaml = {
  Type: Type,
  Schema: Schema,
  FAILSAFE_SCHEMA: FAILSAFE_SCHEMA,
  JSON_SCHEMA: JSON_SCHEMA,
  CORE_SCHEMA: CORE_SCHEMA,
  DEFAULT_SCHEMA: DEFAULT_SCHEMA,
  load: load,
  loadAll: loadAll,
  dump: dump,
  YAMLException: YAMLException,
  types: types,
  safeLoad: safeLoad,
  safeLoadAll: safeLoadAll,
  safeDump: safeDump
};
export default jsYaml;
export { CORE_SCHEMA, DEFAULT_SCHEMA, FAILSAFE_SCHEMA, JSON_SCHEMA, Schema, Type, YAMLException, dump, load, loadAll, safeDump, safeLoad, safeLoadAll, types };