text: define(['dart_sdk'], function(dart_sdk) {
    'use strict';
    const core = dart_sdk.core;
    const collection = dart_sdk.collection;
    const _js_helper = dart_sdk._js_helper;
    const dart = dart_sdk.dart;
    const dartx = dart_sdk.dartx;
    const comparators = Object.create(dart.library);
    const equality = Object.create(dart.library);
    const $codeUnitAt = dartx.codeUnitAt;
    const $rightShift = dartx['>>'];
    const $sign = dartx.sign;
    const $hashCode = dartx.hashCode;
    const $iterator = dartx.iterator;
    const $length = dartx.length;
    const $_get = dartx._get;
    const $_set = dartx._set;
    const $_equals = dartx._equals;
    const $keys = dartx.keys;
    let DefaultEqualityOfNull = () => (DefaultEqualityOfNull = dart.constFn(equality.DefaultEquality$(core.Null)))();
    let LinkedMapOf_MapEntry$int = () => (LinkedMapOf_MapEntry$int = dart.constFn(_js_helper.LinkedMap$(equality._MapEntry, core.int)))();
    const CT = Object.create(null);
    dart.defineLazy(CT, {
      get C0() {
        return C0 = dart.const({
          __proto__: DefaultEqualityOfNull().prototype
        });
      },
      get C1() {
        return C1 = dart.const({
          __proto__: equality.DefaultEquality.prototype
        });
      }
    });
    comparators.equalsIgnoreAsciiCase = function equalsIgnoreAsciiCase(a, b) {
      if (a.length !== b.length) return false;
      for (let i = 0; i < a.length; i = i + 1) {
        let aChar = a[$codeUnitAt](i);
        let bChar = b[$codeUnitAt](i);
        if (aChar === bChar) continue;
        if ((aChar ^ bChar) >>> 0 !== 32) return false;
        let aCharLowerCase = (aChar | 32) >>> 0;
        if (97 <= aCharLowerCase && aCharLowerCase <= 122) {
          continue;
        }
        return false;
      }
      return true;
    };
    comparators.hashIgnoreAsciiCase = function hashIgnoreAsciiCase(string) {
      let hash = 0;
      for (let i = 0; i < string.length; i = i + 1) {
        let char = string[$codeUnitAt](i);
        if (97 <= char && char <= 122) char = char - 32;
        hash = 536870911 & hash + char;
        hash = 536870911 & hash + ((524287 & hash) << 10);
        hash = hash[$rightShift](6);
      }
      hash = 536870911 & hash + ((67108863 & hash) << 3);
      hash = hash[$rightShift](11);
      return 536870911 & hash + ((16383 & hash) << 15);
    };
    comparators.compareAsciiUpperCase = function compareAsciiUpperCase(a, b) {
      let defaultResult = 0;
      for (let i = 0; i < a.length; i = i + 1) {
        if (i >= b.length) return 1;
        let aChar = a[$codeUnitAt](i);
        let bChar = b[$codeUnitAt](i);
        if (aChar === bChar) continue;
        let aUpperCase = aChar;
        let bUpperCase = bChar;
        if (97 <= aChar && aChar <= 122) {
          aUpperCase = aUpperCase - 32;
        }
        if (97 <= bChar && bChar <= 122) {
          bUpperCase = bUpperCase - 32;
        }
        if (aUpperCase !== bUpperCase) return (aUpperCase - bUpperCase)[$sign];
        if (defaultResult === 0) defaultResult = aChar - bChar;
      }
      if (b.length > a.length) return -1;
      return defaultResult[$sign];
    };
    comparators.compareAsciiLowerCase = function compareAsciiLowerCase(a, b) {
      let defaultResult = 0;
      for (let i = 0; i < a.length; i = i + 1) {
        if (i >= b.length) return 1;
        let aChar = a[$codeUnitAt](i);
        let bChar = b[$codeUnitAt](i);
        if (aChar === bChar) continue;
        let aLowerCase = aChar;
        let bLowerCase = bChar;
        if (65 <= bChar && bChar <= 90) {
          bLowerCase = bLowerCase + 32;
        }
        if (65 <= aChar && aChar <= 90) {
          aLowerCase = aLowerCase + 32;
        }
        if (aLowerCase !== bLowerCase) return (aLowerCase - bLowerCase)[$sign];
        if (defaultResult === 0) defaultResult = aChar - bChar;
      }
      if (b.length > a.length) return -1;
      return defaultResult[$sign];
    };
    comparators.compareNatural = function compareNatural(a, b) {
      for (let i = 0; i < a.length; i = i + 1) {
        if (i >= b.length) return 1;
        let aChar = a[$codeUnitAt](i);
        let bChar = b[$codeUnitAt](i);
        if (aChar !== bChar) {
          return comparators._compareNaturally(a, b, i, aChar, bChar);
        }
      }
      if (b.length > a.length) return -1;
      return 0;
    };
    comparators.compareAsciiLowerCaseNatural = function compareAsciiLowerCaseNatural(a, b) {
      let defaultResult = 0;
      for (let i = 0; i < a.length; i = i + 1) {
        if (i >= b.length) return 1;
        let aChar = a[$codeUnitAt](i);
        let bChar = b[$codeUnitAt](i);
        if (aChar === bChar) continue;
        let aLowerCase = aChar;
        let bLowerCase = bChar;
        if (65 <= aChar && aChar <= 90) {
          aLowerCase = aLowerCase + 32;
        }
        if (65 <= bChar && bChar <= 90) {
          bLowerCase = bLowerCase + 32;
        }
        if (aLowerCase !== bLowerCase) {
          return comparators._compareNaturally(a, b, i, aLowerCase, bLowerCase);
        }
        if (defaultResult === 0) defaultResult = aChar - bChar;
      }
      if (b.length > a.length) return -1;
      return defaultResult[$sign];
    };
    comparators.compareAsciiUpperCaseNatural = function compareAsciiUpperCaseNatural(a, b) {
      let defaultResult = 0;
      for (let i = 0; i < a.length; i = i + 1) {
        if (i >= b.length) return 1;
        let aChar = a[$codeUnitAt](i);
        let bChar = b[$codeUnitAt](i);
        if (aChar === bChar) continue;
        let aUpperCase = aChar;
        let bUpperCase = bChar;
        if (97 <= aChar && aChar <= 122) {
          aUpperCase = aUpperCase - 32;
        }
        if (97 <= bChar && bChar <= 122) {
          bUpperCase = bUpperCase - 32;
        }
        if (aUpperCase !== bUpperCase) {
          return comparators._compareNaturally(a, b, i, aUpperCase, bUpperCase);
        }
        if (defaultResult === 0) defaultResult = aChar - bChar;
      }
      if (b.length > a.length) return -1;
      return defaultResult[$sign];
    };
    comparators._compareNaturally = function _compareNaturally(a, b, index, aChar, bChar) {
      if (!(aChar != bChar)) dart.assertFailed(null, "org-dartlang-app:///packages/collection/src/comparators.dart", 259, 10, "aChar != bChar");
      let aIsDigit = comparators._isDigit(aChar);
      let bIsDigit = comparators._isDigit(bChar);
      if (dart.test(aIsDigit)) {
        if (dart.test(bIsDigit)) {
          return comparators._compareNumerically(a, b, aChar, bChar, index);
        } else if (dart.notNull(index) > 0 && dart.test(comparators._isDigit(a[$codeUnitAt](dart.notNull(index) - 1)))) {
          return 1;
        }
      } else if (dart.test(bIsDigit) && dart.notNull(index) > 0 && dart.test(comparators._isDigit(b[$codeUnitAt](dart.notNull(index) - 1)))) {
        return -1;
      }
      return (dart.notNull(aChar) - dart.notNull(bChar))[$sign];
    };
    comparators._compareNumerically = function _compareNumerically(a, b, aChar, bChar, index) {
      if (dart.test(comparators._isNonZeroNumberSuffix(a, index))) {
        let result = comparators._compareDigitCount(a, b, index, index);
        if (result !== 0) return result;
        return (dart.notNull(aChar) - dart.notNull(bChar))[$sign];
      }
      let aIndex = index;
      let bIndex = index;
      if (aChar === 48) {
        do {
          aIndex = dart.notNull(aIndex) + 1;
          if (aIndex === a.length) return -1;
          aChar = a[$codeUnitAt](aIndex);
        } while (aChar === 48);
        if (!dart.test(comparators._isDigit(aChar))) return -1;
      } else if (bChar === 48) {
        do {
          bIndex = dart.notNull(bIndex) + 1;
          if (bIndex === b.length) return 1;
          bChar = b[$codeUnitAt](bIndex);
        } while (bChar === 48);
        if (!dart.test(comparators._isDigit(bChar))) return 1;
      }
      if (aChar != bChar) {
        let result = comparators._compareDigitCount(a, b, aIndex, bIndex);
        if (result !== 0) return result;
        return (dart.notNull(aChar) - dart.notNull(bChar))[$sign];
      }
      while (true) {
        let aIsDigit = false;
        let bIsDigit = false;
        aChar = 0;
        bChar = 0;
        if ((aIndex = dart.notNull(aIndex) + 1) < a.length) {
          aChar = a[$codeUnitAt](aIndex);
          aIsDigit = comparators._isDigit(aChar);
        }
        if ((bIndex = dart.notNull(bIndex) + 1) < b.length) {
          bChar = b[$codeUnitAt](bIndex);
          bIsDigit = comparators._isDigit(bChar);
        }
        if (dart.test(aIsDigit)) {
          if (dart.test(bIsDigit)) {
            if (aChar == bChar) continue;
            break;
          }
          return 1;
        } else if (dart.test(bIsDigit)) {
          return -1;
        } else {
          return (dart.notNull(aIndex) - dart.notNull(bIndex))[$sign];
        }
      }
      let result = comparators._compareDigitCount(a, b, aIndex, bIndex);
      if (result !== 0) return result;
      return (dart.notNull(aChar) - dart.notNull(bChar))[$sign];
    };
    comparators._compareDigitCount = function _compareDigitCount(a, b, i, j) {
      while ((i = dart.notNull(i) + 1) < a.length) {
        let aIsDigit = comparators._isDigit(a[$codeUnitAt](i));
        if ((j = dart.notNull(j) + 1) === b.length) return dart.test(aIsDigit) ? 1 : 0;
        let bIsDigit = comparators._isDigit(b[$codeUnitAt](j));
        if (dart.test(aIsDigit)) {
          if (dart.test(bIsDigit)) continue;
          return 1;
        } else if (dart.test(bIsDigit)) {
          return -1;
        } else {
          return 0;
        }
      }
      if ((j = dart.notNull(j) + 1) < b.length && dart.test(comparators._isDigit(b[$codeUnitAt](j)))) {
        return -1;
      }
      return 0;
    };
    comparators._isDigit = function _isDigit(charCode) {
      return (dart.notNull(charCode) ^ 48) >>> 0 <= 9;
    };
    comparators._isNonZeroNumberSuffix = function _isNonZeroNumberSuffix(string, index) {
      while ((index = dart.notNull(index) - 1) >= 0) {
        let char = string[$codeUnitAt](index);
        if (char !== 48) return comparators._isDigit(char);
      }
      return false;
    };
    dart.defineLazy(comparators, {
      /*comparators._zero*/get _zero() {
        return 48;
      },
      /*comparators._upperCaseA*/get _upperCaseA() {
        return 65;
      },
      /*comparators._upperCaseZ*/get _upperCaseZ() {
        return 90;
      },
      /*comparators._lowerCaseA*/get _lowerCaseA() {
        return 97;
      },
      /*comparators._lowerCaseZ*/get _lowerCaseZ() {
        return 122;
      },
      /*comparators._asciiCaseBit*/get _asciiCaseBit() {
        return 32;
      }
    });
    const _is_Equality_default = Symbol('_is_Equality_default');
    equality.Equality$ = dart.generic(E => {
      class Equality extends core.Object {}
      (Equality[dart.mixinNew] = function() {
      }).prototype = Equality.prototype;
      dart.addTypeTests(Equality);
      Equality.prototype[_is_Equality_default] = true;
      dart.setLibraryUri(Equality, "package:collection/src/equality.dart");
      return Equality;
    });
    equality.Equality = equality.Equality$();
    dart.addTypeTests(equality.Equality, _is_Equality_default);
    let C0;
    const _getKey = dart.privateName(equality, "_getKey");
    const _inner = dart.privateName(equality, "_inner");
    const _is_EqualityBy_default = Symbol('_is_EqualityBy_default');
    equality.EqualityBy$ = dart.generic((E, F) => {
      class EqualityBy extends core.Object {
        equals(e1, e2) {
          E._check(e1);
          E._check(e2);
          return this[_inner].equals(this[_getKey](e1), this[_getKey](e2));
        }
        hash(e) {
          E._check(e);
          return this[_inner].hash(this[_getKey](e));
        }
        isValidKey(o) {
          if (E.is(o)) {
            let value = this[_getKey](o);
            return F.is(value) && dart.test(this[_inner].isValidKey(value));
          }
          return false;
        }
      }
      (EqualityBy.new = function(getKey, inner = C0 || CT.C0) {
        this[_getKey] = getKey;
        this[_inner] = inner;
        ;
      }).prototype = EqualityBy.prototype;
      dart.addTypeTests(EqualityBy);
      EqualityBy.prototype[_is_EqualityBy_default] = true;
      EqualityBy[dart.implements] = () => [equality.Equality$(E)];
      dart.setMethodSignature(EqualityBy, () => ({
        __proto__: dart.getMethods(EqualityBy.__proto__),
        equals: dart.fnType(core.bool, [core.Object, core.Object]),
        hash: dart.fnType(core.int, [core.Object]),
        isValidKey: dart.fnType(core.bool, [core.Object])
      }));
      dart.setLibraryUri(EqualityBy, "package:collection/src/equality.dart");
      dart.setFieldSignature(EqualityBy, () => ({
        __proto__: dart.getFields(EqualityBy.__proto__),
        [_getKey]: dart.finalFieldType(dart.fnType(F, [E])),
        [_inner]: dart.finalFieldType(equality.Equality$(F))
      }));
      return EqualityBy;
    });
    equality.EqualityBy = equality.EqualityBy$();
    dart.addTypeTests(equality.EqualityBy, _is_EqualityBy_default);
    const _is_DefaultEquality_default = Symbol('_is_DefaultEquality_default');
    equality.DefaultEquality$ = dart.generic(E => {
      class DefaultEquality extends core.Object {
        equals(e1, e2) {
          return dart.equals(e1, e2);
        }
        hash(e) {
          return dart.hashCode(e);
        }
        isValidKey(o) {
          return true;
        }
      }
      (DefaultEquality.new = function() {
        ;
      }).prototype = DefaultEquality.prototype;
      dart.addTypeTests(DefaultEquality);
      DefaultEquality.prototype[_is_DefaultEquality_default] = true;
      DefaultEquality[dart.implements] = () => [equality.Equality$(E)];
      dart.setMethodSignature(DefaultEquality, () => ({
        __proto__: dart.getMethods(DefaultEquality.__proto__),
        equals: dart.fnType(core.bool, [core.Object, core.Object]),
        hash: dart.fnType(core.int, [core.Object]),
        isValidKey: dart.fnType(core.bool, [core.Object])
      }));
      dart.setLibraryUri(DefaultEquality, "package:collection/src/equality.dart");
      return DefaultEquality;
    });
    equality.DefaultEquality = equality.DefaultEquality$();
    dart.addTypeTests(equality.DefaultEquality, _is_DefaultEquality_default);
    const _is_IdentityEquality_default = Symbol('_is_IdentityEquality_default');
    equality.IdentityEquality$ = dart.generic(E => {
      class IdentityEquality extends core.Object {
        equals(e1, e2) {
          E._check(e1);
          E._check(e2);
          return core.identical(e1, e2);
        }
        hash(e) {
          E._check(e);
          return core.identityHashCode(e);
        }
        isValidKey(o) {
          return true;
        }
      }
      (IdentityEquality.new = function() {
        ;
      }).prototype = IdentityEquality.prototype;
      dart.addTypeTests(IdentityEquality);
      IdentityEquality.prototype[_is_IdentityEquality_default] = true;
      IdentityEquality[dart.implements] = () => [equality.Equality$(E)];
      dart.setMethodSignature(IdentityEquality, () => ({
        __proto__: dart.getMethods(IdentityEquality.__proto__),
        equals: dart.fnType(core.bool, [core.Object, core.Object]),
        hash: dart.fnType(core.int, [core.Object]),
        isValidKey: dart.fnType(core.bool, [core.Object])
      }));
      dart.setLibraryUri(IdentityEquality, "package:collection/src/equality.dart");
      return IdentityEquality;
    });
    equality.IdentityEquality = equality.IdentityEquality$();
    dart.addTypeTests(equality.IdentityEquality, _is_IdentityEquality_default);
    const _elementEquality = dart.privateName(equality, "_elementEquality");
    const _is_IterableEquality_default = Symbol('_is_IterableEquality_default');
    const _elementEquality$ = dart.privateName(equality, "IterableEquality._elementEquality");
    equality.IterableEquality$ = dart.generic(E => {
      let IterableOfE = () => (IterableOfE = dart.constFn(core.Iterable$(E)))();
      class IterableEquality extends core.Object {
        get [_elementEquality]() {
          return this[_elementEquality$];
        }
        set [_elementEquality](value) {
          super[_elementEquality] = value;
        }
        equals(elements1, elements2) {
          IterableOfE()._check(elements1);
          IterableOfE()._check(elements2);
          if (elements1 == elements2) return true;
          if (elements1 == null || elements2 == null) return false;
          let it1 = elements1[$iterator];
          let it2 = elements2[$iterator];
          while (true) {
            let hasNext = it1.moveNext();
            if (!dart.equals(hasNext, it2.moveNext())) return false;
            if (!dart.test(hasNext)) return true;
            if (!dart.test(this[_elementEquality].equals(it1.current, it2.current))) return false;
          }
        }
        hash(elements) {
          IterableOfE()._check(elements);
          if (elements == null) return dart.hashCode(null);
          let hash = 0;
          for (let element of elements) {
            let c = this[_elementEquality].hash(element);
            hash = (hash + dart.notNull(c) & 2147483647) >>> 0;
            hash = (hash + (hash << 10 >>> 0) & 2147483647) >>> 0;
            hash = (hash ^ hash[$rightShift](6)) >>> 0;
          }
          hash = (hash + (hash << 3 >>> 0) & 2147483647) >>> 0;
          hash = (hash ^ hash[$rightShift](11)) >>> 0;
          hash = (hash + (hash << 15 >>> 0) & 2147483647) >>> 0;
          return hash;
        }
        isValidKey(o) {
          return IterableOfE().is(o);
        }
      }
      (IterableEquality.new = function(elementEquality = C0 || CT.C0) {
        this[_elementEquality$] = elementEquality;
        ;
      }).prototype = IterableEquality.prototype;
      dart.addTypeTests(IterableEquality);
      IterableEquality.prototype[_is_IterableEquality_default] = true;
      IterableEquality[dart.implements] = () => [equality.Equality$(core.Iterable$(E))];
      dart.setMethodSignature(IterableEquality, () => ({
        __proto__: dart.getMethods(IterableEquality.__proto__),
        equals: dart.fnType(core.bool, [core.Object, core.Object]),
        hash: dart.fnType(core.int, [core.Object]),
        isValidKey: dart.fnType(core.bool, [core.Object])
      }));
      dart.setLibraryUri(IterableEquality, "package:collection/src/equality.dart");
      dart.setFieldSignature(IterableEquality, () => ({
        __proto__: dart.getFields(IterableEquality.__proto__),
        [_elementEquality]: dart.finalFieldType(equality.Equality$(E))
      }));
      return IterableEquality;
    });
    equality.IterableEquality = equality.IterableEquality$();
    dart.addTypeTests(equality.IterableEquality, _is_IterableEquality_default);
    const _is_ListEquality_default = Symbol('_is_ListEquality_default');
    const _elementEquality$0 = dart.privateName(equality, "ListEquality._elementEquality");
    equality.ListEquality$ = dart.generic(E => {
      let ListOfE = () => (ListOfE = dart.constFn(core.List$(E)))();
      class ListEquality extends core.Object {
        get [_elementEquality]() {
          return this[_elementEquality$0];
        }
        set [_elementEquality](value) {
          super[_elementEquality] = value;
        }
        equals(list1, list2) {
          ListOfE()._check(list1);
          ListOfE()._check(list2);
          if (list1 == list2) return true;
          if (list1 == null || list2 == null) return false;
          let length = list1[$length];
          if (length != list2[$length]) return false;
          for (let i = 0; i < dart.notNull(length); i = i + 1) {
            if (!dart.test(this[_elementEquality].equals(list1[$_get](i), list2[$_get](i)))) return false;
          }
          return true;
        }
        hash(list) {
          ListOfE()._check(list);
          if (list == null) return dart.hashCode(null);
          let hash = 0;
          for (let i = 0; i < dart.notNull(list[$length]); i = i + 1) {
            let c = this[_elementEquality].hash(list[$_get](i));
            hash = (hash + dart.notNull(c) & 2147483647) >>> 0;
            hash = (hash + (hash << 10 >>> 0) & 2147483647) >>> 0;
            hash = (hash ^ hash[$rightShift](6)) >>> 0;
          }
          hash = (hash + (hash << 3 >>> 0) & 2147483647) >>> 0;
          hash = (hash ^ hash[$rightShift](11)) >>> 0;
          hash = (hash + (hash << 15 >>> 0) & 2147483647) >>> 0;
          return hash;
        }
        isValidKey(o) {
          return ListOfE().is(o);
        }
      }
      (ListEquality.new = function(elementEquality = C0 || CT.C0) {
        this[_elementEquality$0] = elementEquality;
        ;
      }).prototype = ListEquality.prototype;
      dart.addTypeTests(ListEquality);
      ListEquality.prototype[_is_ListEquality_default] = true;
      ListEquality[dart.implements] = () => [equality.Equality$(core.List$(E))];
      dart.setMethodSignature(ListEquality, () => ({
        __proto__: dart.getMethods(ListEquality.__proto__),
        equals: dart.fnType(core.bool, [core.Object, core.Object]),
        hash: dart.fnType(core.int, [core.Object]),
        isValidKey: dart.fnType(core.bool, [core.Object])
      }));
      dart.setLibraryUri(ListEquality, "package:collection/src/equality.dart");
      dart.setFieldSignature(ListEquality, () => ({
        __proto__: dart.getFields(ListEquality.__proto__),
        [_elementEquality]: dart.finalFieldType(equality.Equality$(E))
      }));
      return ListEquality;
    });
    equality.ListEquality = equality.ListEquality$();
    dart.addTypeTests(equality.ListEquality, _is_ListEquality_default);
    const _is__UnorderedEquality_default = Symbol('_is__UnorderedEquality_default');
    const _elementEquality$1 = dart.privateName(equality, "_UnorderedEquality._elementEquality");
    equality._UnorderedEquality$ = dart.generic((E, T) => {
      let HashMapOfE$int = () => (HashMapOfE$int = dart.constFn(collection.HashMap$(E, core.int)))();
      class _UnorderedEquality extends core.Object {
        get [_elementEquality]() {
          return this[_elementEquality$1];
        }
        set [_elementEquality](value) {
          super[_elementEquality] = value;
        }
        equals(elements1, elements2) {
          T._check(elements1);
          T._check(elements2);
          if (elements1 == elements2) return true;
          if (elements1 == null || elements2 == null) return false;
          let counts = HashMapOfE$int().new({equals: dart.bind(this[_elementEquality], 'equals'), hashCode: dart.bind(this[_elementEquality], 'hash'), isValidKey: dart.bind(this[_elementEquality], 'isValidKey')});
          let length = 0;
          for (let e of elements1) {
            let count = counts[$_get](e);
            if (count == null) count = 0;
            counts[$_set](e, dart.notNull(count) + 1);
            length = length + 1;
          }
          for (let e of elements2) {
            let count = counts[$_get](e);
            if (count == null || count === 0) return false;
            counts[$_set](e, dart.notNull(count) - 1);
            length = length - 1;
          }
          return length === 0;
        }
        hash(elements) {
          T._check(elements);
          if (elements == null) return dart.hashCode(null);
          let hash = 0;
          for (let element of elements) {
            let c = this[_elementEquality].hash(element);
            hash = (hash + dart.notNull(c) & 2147483647) >>> 0;
          }
          hash = (hash + (hash << 3 >>> 0) & 2147483647) >>> 0;
          hash = (hash ^ hash[$rightShift](11)) >>> 0;
          hash = (hash + (hash << 15 >>> 0) & 2147483647) >>> 0;
          return hash;
        }
      }
      (_UnorderedEquality.new = function(_elementEquality) {
        this[_elementEquality$1] = _elementEquality;
        ;
      }).prototype = _UnorderedEquality.prototype;
      dart.addTypeTests(_UnorderedEquality);
      _UnorderedEquality.prototype[_is__UnorderedEquality_default] = true;
      _UnorderedEquality[dart.implements] = () => [equality.Equality$(T)];
      dart.setMethodSignature(_UnorderedEquality, () => ({
        __proto__: dart.getMethods(_UnorderedEquality.__proto__),
        equals: dart.fnType(core.bool, [core.Object, core.Object]),
        hash: dart.fnType(core.int, [core.Object])
      }));
      dart.setLibraryUri(_UnorderedEquality, "package:collection/src/equality.dart");
      dart.setFieldSignature(_UnorderedEquality, () => ({
        __proto__: dart.getFields(_UnorderedEquality.__proto__),
        [_elementEquality]: dart.finalFieldType(equality.Equality$(E))
      }));
      return _UnorderedEquality;
    });
    equality._UnorderedEquality = equality._UnorderedEquality$();
    dart.addTypeTests(equality._UnorderedEquality, _is__UnorderedEquality_default);
    const _is_UnorderedIterableEquality_default = Symbol('_is_UnorderedIterableEquality_default');
    equality.UnorderedIterableEquality$ = dart.generic(E => {
      let IterableOfE = () => (IterableOfE = dart.constFn(core.Iterable$(E)))();
      class UnorderedIterableEquality extends equality._UnorderedEquality$(E, core.Iterable$(E)) {
        isValidKey(o) {
          return IterableOfE().is(o);
        }
      }
      (UnorderedIterableEquality.new = function(elementEquality = C0 || CT.C0) {
        UnorderedIterableEquality.__proto__.new.call(this, elementEquality);
        ;
      }).prototype = UnorderedIterableEquality.prototype;
      dart.addTypeTests(UnorderedIterableEquality);
      UnorderedIterableEquality.prototype[_is_UnorderedIterableEquality_default] = true;
      dart.setMethodSignature(UnorderedIterableEquality, () => ({
        __proto__: dart.getMethods(UnorderedIterableEquality.__proto__),
        isValidKey: dart.fnType(core.bool, [core.Object])
      }));
      dart.setLibraryUri(UnorderedIterableEquality, "package:collection/src/equality.dart");
      return UnorderedIterableEquality;
    });
    equality.UnorderedIterableEquality = equality.UnorderedIterableEquality$();
    dart.addTypeTests(equality.UnorderedIterableEquality, _is_UnorderedIterableEquality_default);
    const _is_SetEquality_default = Symbol('_is_SetEquality_default');
    equality.SetEquality$ = dart.generic(E => {
      let SetOfE = () => (SetOfE = dart.constFn(core.Set$(E)))();
      class SetEquality extends equality._UnorderedEquality$(E, core.Set$(E)) {
        isValidKey(o) {
          return SetOfE().is(o);
        }
      }
      (SetEquality.new = function(elementEquality = C0 || CT.C0) {
        SetEquality.__proto__.new.call(this, elementEquality);
        ;
      }).prototype = SetEquality.prototype;
      dart.addTypeTests(SetEquality);
      SetEquality.prototype[_is_SetEquality_default] = true;
      dart.setMethodSignature(SetEquality, () => ({
        __proto__: dart.getMethods(SetEquality.__proto__),
        isValidKey: dart.fnType(core.bool, [core.Object])
      }));
      dart.setLibraryUri(SetEquality, "package:collection/src/equality.dart");
      return SetEquality;
    });
    equality.SetEquality = equality.SetEquality$();
    dart.addTypeTests(equality.SetEquality, _is_SetEquality_default);
    const _keyEquality = dart.privateName(equality, "_keyEquality");
    const _valueEquality = dart.privateName(equality, "_valueEquality");
    equality._MapEntry = class _MapEntry extends core.Object {
      get hashCode() {
        return (3 * dart.notNull(this.equality[_keyEquality].hash(this.key)) + 7 * dart.notNull(this.equality[_valueEquality].hash(this.value)) & 2147483647) >>> 0;
      }
      _equals(other) {
        if (other == null) return false;
        return equality._MapEntry.is(other) && dart.test(this.equality[_keyEquality].equals(this.key, other.key)) && dart.test(this.equality[_valueEquality].equals(this.value, other.value));
      }
    };
    (equality._MapEntry.new = function(equality, key, value) {
      this.equality = equality;
      this.key = key;
      this.value = value;
      ;
    }).prototype = equality._MapEntry.prototype;
    dart.addTypeTests(equality._MapEntry);
    dart.setMethodSignature(equality._MapEntry, () => ({
      __proto__: dart.getMethods(equality._MapEntry.__proto__),
      _equals: dart.fnType(core.bool, [core.Object]),
      [$_equals]: dart.fnType(core.bool, [core.Object])
    }));
    dart.setLibraryUri(equality._MapEntry, "package:collection/src/equality.dart");
    dart.setFieldSignature(equality._MapEntry, () => ({
      __proto__: dart.getFields(equality._MapEntry.__proto__),
      equality: dart.finalFieldType(equality.MapEquality),
      key: dart.finalFieldType(dart.dynamic),
      value: dart.finalFieldType(dart.dynamic)
    }));
    dart.defineExtensionMethods(equality._MapEntry, ['_equals']);
    dart.defineExtensionAccessors(equality._MapEntry, ['hashCode']);
    const _is_MapEquality_default = Symbol('_is_MapEquality_default');
    const _keyEquality$ = dart.privateName(equality, "MapEquality._keyEquality");
    const _valueEquality$ = dart.privateName(equality, "MapEquality._valueEquality");
    equality.MapEquality$ = dart.generic((K, V) => {
      let MapOfK$V = () => (MapOfK$V = dart.constFn(core.Map$(K, V)))();
      class MapEquality extends core.Object {
        get [_keyEquality]() {
          return this[_keyEquality$];
        }
        set [_keyEquality](value) {
          super[_keyEquality] = value;
        }
        get [_valueEquality]() {
          return this[_valueEquality$];
        }
        set [_valueEquality](value) {
          super[_valueEquality] = value;
        }
        equals(map1, map2) {
          MapOfK$V()._check(map1);
          MapOfK$V()._check(map2);
          if (map1 == map2) return true;
          if (map1 == null || map2 == null) return false;
          let length = map1[$length];
          if (length != map2[$length]) return false;
          let equalElementCounts = new (LinkedMapOf_MapEntry$int()).new();
          for (let key of map1[$keys]) {
            let entry = new equality._MapEntry.new(this, key, map1[$_get](key));
            let count = equalElementCounts[$_get](entry);
            if (count == null) count = 0;
            equalElementCounts[$_set](entry, dart.notNull(count) + 1);
          }
          for (let key of map2[$keys]) {
            let entry = new equality._MapEntry.new(this, key, map2[$_get](key));
            let count = equalElementCounts[$_get](entry);
            if (count == null || count === 0) return false;
            equalElementCounts[$_set](entry, dart.notNull(count) - 1);
          }
          return true;
        }
        hash(map) {
          MapOfK$V()._check(map);
          if (map == null) return dart.hashCode(null);
          let hash = 0;
          for (let key of map[$keys]) {
            let keyHash = this[_keyEquality].hash(key);
            let valueHash = this[_valueEquality].hash(map[$_get](key));
            hash = (hash + 3 * dart.notNull(keyHash) + 7 * dart.notNull(valueHash) & 2147483647) >>> 0;
          }
          hash = (hash + (hash << 3 >>> 0) & 2147483647) >>> 0;
          hash = (hash ^ hash[$rightShift](11)) >>> 0;
          hash = (hash + (hash << 15 >>> 0) & 2147483647) >>> 0;
          return hash;
        }
        isValidKey(o) {
          return MapOfK$V().is(o);
        }
      }
      (MapEquality.new = function(opts) {
        let keys = opts && 'keys' in opts ? opts.keys : C0 || CT.C0;
        let values = opts && 'values' in opts ? opts.values : C0 || CT.C0;
        this[_keyEquality$] = keys;
        this[_valueEquality$] = values;
        ;
      }).prototype = MapEquality.prototype;
      dart.addTypeTests(MapEquality);
      MapEquality.prototype[_is_MapEquality_default] = true;
      MapEquality[dart.implements] = () => [equality.Equality$(core.Map$(K, V))];
      dart.setMethodSignature(MapEquality, () => ({
        __proto__: dart.getMethods(MapEquality.__proto__),
        equals: dart.fnType(core.bool, [core.Object, core.Object]),
        hash: dart.fnType(core.int, [core.Object]),
        isValidKey: dart.fnType(core.bool, [core.Object])
      }));
      dart.setLibraryUri(MapEquality, "package:collection/src/equality.dart");
      dart.setFieldSignature(MapEquality, () => ({
        __proto__: dart.getFields(MapEquality.__proto__),
        [_keyEquality]: dart.finalFieldType(equality.Equality$(K)),
        [_valueEquality]: dart.finalFieldType(equality.Equality$(V))
      }));
      return MapEquality;
    });
    equality.MapEquality = equality.MapEquality$();
    dart.addTypeTests(equality.MapEquality, _is_MapEquality_default);
    const _equalities = dart.privateName(equality, "_equalities");
    const _is_MultiEquality_default = Symbol('_is_MultiEquality_default');
    const _equalities$ = dart.privateName(equality, "MultiEquality._equalities");
    equality.MultiEquality$ = dart.generic(E => {
      class MultiEquality extends core.Object {
        get [_equalities]() {
          return this[_equalities$];
        }
        set [_equalities](value) {
          super[_equalities] = value;
        }
        equals(e1, e2) {
          E._check(e1);
          E._check(e2);
          for (let eq of this[_equalities]) {
            if (dart.test(eq.isValidKey(e1))) return dart.test(eq.isValidKey(e2)) && dart.test(eq.equals(e1, e2));
          }
          return false;
        }
        hash(e) {
          E._check(e);
          for (let eq of this[_equalities]) {
            if (dart.test(eq.isValidKey(e))) return eq.hash(e);
          }
          return 0;
        }
        isValidKey(o) {
          for (let eq of this[_equalities]) {
            if (dart.test(eq.isValidKey(o))) return true;
          }
          return false;
        }
      }
      (MultiEquality.new = function(equalities) {
        this[_equalities$] = equalities;
        ;
      }).prototype = MultiEquality.prototype;
      dart.addTypeTests(MultiEquality);
      MultiEquality.prototype[_is_MultiEquality_default] = true;
      MultiEquality[dart.implements] = () => [equality.Equality$(E)];
      dart.setMethodSignature(MultiEquality, () => ({
        __proto__: dart.getMethods(MultiEquality.__proto__),
        equals: dart.fnType(core.bool, [core.Object, core.Object]),
        hash: dart.fnType(core.int, [core.Object]),
        isValidKey: dart.fnType(core.bool, [core.Object])
      }));
      dart.setLibraryUri(MultiEquality, "package:collection/src/equality.dart");
      dart.setFieldSignature(MultiEquality, () => ({
        __proto__: dart.getFields(MultiEquality.__proto__),
        [_equalities]: dart.finalFieldType(core.Iterable$(equality.Equality$(E)))
      }));
      return MultiEquality;
    });
    equality.MultiEquality = equality.MultiEquality$();
    dart.addTypeTests(equality.MultiEquality, _is_MultiEquality_default);
    let C1;
    const _base = dart.privateName(equality, "_base");
    const _unordered = dart.privateName(equality, "_unordered");
    const _base$ = dart.privateName(equality, "DeepCollectionEquality._base");
    const _unordered$ = dart.privateName(equality, "DeepCollectionEquality._unordered");
    equality.DeepCollectionEquality = class DeepCollectionEquality extends core.Object {
      get [_base]() {
        return this[_base$];
      }
      set [_base](value) {
        super[_base] = value;
      }
      get [_unordered]() {
        return this[_unordered$];
      }
      set [_unordered](value) {
        super[_unordered] = value;
      }
      equals(e1, e2) {
        if (core.Set.is(e1)) {
          return core.Set.is(e2) && dart.test(new equality.SetEquality.new(this).equals(e1, e2));
        }
        if (core.Map.is(e1)) {
          return core.Map.is(e2) && dart.test(new equality.MapEquality.new({keys: this, values: this}).equals(e1, e2));
        }
        if (!dart.test(this[_unordered])) {
          if (core.List.is(e1)) {
            return core.List.is(e2) && dart.test(new equality.ListEquality.new(this).equals(e1, e2));
          }
          if (core.Iterable.is(e1)) {
            return core.Iterable.is(e2) && dart.test(new equality.IterableEquality.new(this).equals(e1, e2));
          }
        } else if (core.Iterable.is(e1)) {
          if (!core.List.is(e1)[$_equals](core.List.is(e2))) return false;
          return core.Iterable.is(e2) && dart.test(new equality.UnorderedIterableEquality.new(this).equals(e1, e2));
        }
        return this[_base].equals(e1, e2);
      }
      hash(o) {
        if (core.Set.is(o)) return new equality.SetEquality.new(this).hash(o);
        if (core.Map.is(o)) return new equality.MapEquality.new({keys: this, values: this}).hash(o);
        if (!dart.test(this[_unordered])) {
          if (core.List.is(o)) return new equality.ListEquality.new(this).hash(o);
          if (core.Iterable.is(o)) return new equality.IterableEquality.new(this).hash(o);
        } else if (core.Iterable.is(o)) {
          return new equality.UnorderedIterableEquality.new(this).hash(o);
        }
        return this[_base].hash(o);
      }
      isValidKey(o) {
        return core.Iterable.is(o) || core.Map.is(o) || dart.test(this[_base].isValidKey(o));
      }
    };
    (equality.DeepCollectionEquality.new = function(base = C1 || CT.C1) {
      this[_base$] = base;
      this[_unordered$] = false;
      ;
    }).prototype = equality.DeepCollectionEquality.prototype;
    (equality.DeepCollectionEquality.unordered = function(base = C1 || CT.C1) {
      this[_base$] = base;
      this[_unordered$] = true;
      ;
    }).prototype = equality.DeepCollectionEquality.prototype;
    dart.addTypeTests(equality.DeepCollectionEquality);
    equality.DeepCollectionEquality[dart.implements] = () => [equality.Equality];
    dart.setMethodSignature(equality.DeepCollectionEquality, () => ({
      __proto__: dart.getMethods(equality.DeepCollectionEquality.__proto__),
      equals: dart.fnType(core.bool, [core.Object, core.Object]),
      hash: dart.fnType(core.int, [core.Object]),
      isValidKey: dart.fnType(core.bool, [core.Object])
    }));
    dart.setLibraryUri(equality.DeepCollectionEquality, "package:collection/src/equality.dart");
    dart.setFieldSignature(equality.DeepCollectionEquality, () => ({
      __proto__: dart.getFields(equality.DeepCollectionEquality.__proto__),
      [_base]: dart.finalFieldType(equality.Equality),
      [_unordered]: dart.finalFieldType(core.bool)
    }));
    equality.CaseInsensitiveEquality = class CaseInsensitiveEquality extends core.Object {
      equals(string1, string2) {
        core.String._check(string1);
        core.String._check(string2);
        return comparators.equalsIgnoreAsciiCase(string1, string2);
      }
      hash(string) {
        core.String._check(string);
        return comparators.hashIgnoreAsciiCase(string);
      }
      isValidKey(object) {
        return typeof object == 'string';
      }
    };
    (equality.CaseInsensitiveEquality.new = function() {
      ;
    }).prototype = equality.CaseInsensitiveEquality.prototype;
    dart.addTypeTests(equality.CaseInsensitiveEquality);
    equality.CaseInsensitiveEquality[dart.implements] = () => [equality.Equality$(core.String)];
    dart.setMethodSignature(equality.CaseInsensitiveEquality, () => ({
      __proto__: dart.getMethods(equality.CaseInsensitiveEquality.__proto__),
      equals: dart.fnType(core.bool, [core.Object, core.Object]),
      hash: dart.fnType(core.int, [core.Object]),
      isValidKey: dart.fnType(core.bool, [core.Object])
    }));
    dart.setLibraryUri(equality.CaseInsensitiveEquality, "package:collection/src/equality.dart");
    dart.defineLazy(equality, {
      /*equality._HASH_MASK*/get _HASH_MASK() {
        return 2147483647;
      }
    });
    dart.trackLibraries("packages/collection/src/comparators", {
      "package:collection/src/comparators.dart": comparators,
      "package:collection/src/equality.dart": equality
    }, {
    }, 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    // Exports:
    return {
      src__comparators: comparators,
      src__equality: equality
    };
  });
  
  //# sourceMappingURL=comparators.ddc.js.map
  