@topl_protocol/brambldart/BramblDart.dart.js

A pure JavaScript implementation of BramblDart.

// make sure to keep this as 'var'
// we don't want block scoping

var dartNodePreambleSelf = typeof global !== "undefined" ? global : window;

var self = Object.create(dartNodePreambleSelf);

self.scheduleImmediate = typeof setImmediate !== "undefined"
    ? function (cb) {
        setImmediate(cb);
      }
    : function(cb) {
        setTimeout(cb, 0);
      };

// CommonJS globals.
self.exports = exports;

// Node.js specific exports, check to see if they exist & or polyfilled

if (typeof process !== "undefined") {
  self.process = process;
}

if (typeof __dirname !== "undefined") {
  self.__dirname = __dirname;
}

if (typeof __filename !== "undefined") {
  self.__filename = __filename;
}

if (typeof Buffer !== "undefined") {
  self.Buffer = Buffer;
}

// if we're running in a browser, Dart supports most of this out of box
// make sure we only run these in Node.js environment

var dartNodeIsActuallyNode = !dartNodePreambleSelf.window

try {
  // Check if we're in a Web Worker instead.
  if ("undefined" !== typeof WorkerGlobalScope && dartNodePreambleSelf instanceof WorkerGlobalScope) {
    dartNodeIsActuallyNode = false;
  }

  // Check if we're in Electron, with Node.js integration, and override if true.
  if ("undefined" !== typeof process && process.versions && process.versions.hasOwnProperty('electron') && process.versions.hasOwnProperty('node')) {
    dartNodeIsActuallyNode = true;
  }
} catch(e) {}

if (dartNodeIsActuallyNode) {
  // This line is to:
  // 1) Prevent Webpack from bundling.
  // 2) In Webpack on Node.js, make sure we're using the native Node.js require, which is available via __non_webpack_require__
  // https://github.com/mbullington/node_preamble.dart/issues/18#issuecomment-527305561
  var url = ("undefined" !== typeof __webpack_require__ ? __non_webpack_require__ : require)("url");

  // Setting `self.location=` in Electron throws a `TypeError`, so we define it
  // as a property instead to be safe.
  Object.defineProperty(self, "location", {
    value: {
      get href() {
        if (url.pathToFileURL) {
          return url.pathToFileURL(process.cwd()).href + "/";
        } else {
          // This isn't really a correct transformation, but it's the best we have
          // for versions of Node <10.12.0 which introduced `url.pathToFileURL()`.
          // For example, it will fail for paths that contain characters that need
          // to be escaped in URLs.
          return "file://" + (function() {
            var cwd = process.cwd();
            if (process.platform != "win32") return cwd;
            return "/" + cwd.replace(/\\/g, "/");
          })() + "/"
        }
      }
    }
  });

  (function() {
    function computeCurrentScript() {
      try {
        throw new Error();
      } catch(e) {
        var stack = e.stack;
        var re = new RegExp("^ *at [^(]*\\((.*):[0-9]*:[0-9]*\\)$", "mg");
        var lastMatch = null;
        do {
          var match = re.exec(stack);
          if (match != null) lastMatch = match;
        } while (match != null);
        return lastMatch[1];
      }
    }

    // Setting `self.document=` isn't known to throw an error anywhere like
    // `self.location=` does on Electron, but it's better to be future-proof
    // just in case..
    var cachedCurrentScript = null;
    Object.defineProperty(self, "document", {
      value: {
        get currentScript() {
          if (cachedCurrentScript == null) {
            cachedCurrentScript = {src: computeCurrentScript()};
          }
          return cachedCurrentScript;
        }
      }
    });
  })();

  self.dartDeferredLibraryLoader = function(uri, successCallback, errorCallback) {
    try {
     load(uri);
      successCallback();
    } catch (error) {
      errorCallback(error);
    }
  };
}

// Generated by dart2js (NullSafetyMode.sound, trust primitives, omit checks, lax runtime type, no-legacy-javascript), the Dart to JavaScript compiler version: 2.15.0-82.0.dev.
// The code supports the following hooks:
// dartPrint(message):
//    if this function is defined it is called instead of the Dart [print]
//    method.
//
// dartMainRunner(main, args):
//    if this function is defined, the Dart [main] method will not be invoked
//    directly. Instead, a closure that will invoke [main], and its arguments
//    [args] is passed to [dartMainRunner].
//
// dartDeferredLibraryLoader(uri, successCallback, errorCallback, loadId):
//    if this function is defined, it will be called when a deferred library
//    is loaded. It should load and eval the javascript of `uri`, and call
//    successCallback. If it fails to do so, it should call errorCallback with
//    an error. The loadId argument is the deferred import that resulted in
//    this uri being loaded.
//
// dartCallInstrumentation(id, qualifiedName):
//    if this function is defined, it will be called at each entry of a
//    method or constructor. Used only when compiling programs with
//    --experiment-call-instrumentation.
(function dartProgram() {
  function copyProperties(from, to) {
    var keys = Object.keys(from);
    for (var i = 0; i < keys.length; i++) {
      var key = keys[i];
      to[key] = from[key];
    }
  }
  function mixinProperties(from, to) {
    var keys = Object.keys(from);
    for (var i = 0; i < keys.length; i++) {
      var key = keys[i];
      if (!to.hasOwnProperty(key))
        to[key] = from[key];
    }
  }
  var supportsDirectProtoAccess = function() {
    var cls = function() {
    };
    cls.prototype = {p: {}};
    var object = new cls();
    if (!(object.__proto__ && object.__proto__.p === cls.prototype.p))
      return false;
    try {
      if (typeof navigator != "undefined" && typeof navigator.userAgent == "string" && navigator.userAgent.indexOf("Chrome/") >= 0)
        return true;
      if (typeof version == "function" && version.length == 0) {
        var v = version();
        if (/^\d+\.\d+\.\d+\.\d+$/.test(v))
          return true;
      }
    } catch (_) {
    }
    return false;
  }();
  function setFunctionNamesIfNecessary(holders) {
    function t() {
    }
    ;
    if (typeof t.name == "string")
      return;
    for (var i = 0; i < holders.length; i++) {
      var holder = holders[i];
      var keys = Object.keys(holder);
      for (var j = 0; j < keys.length; j++) {
        var key = keys[j];
        var f = holder[key];
        if (typeof f == "function")
          f.name = key;
      }
    }
  }
  function inherit(cls, sup) {
    cls.prototype.constructor = cls;
    cls.prototype["$is" + cls.name] = cls;
    if (sup != null) {
      if (supportsDirectProtoAccess) {
        cls.prototype.__proto__ = sup.prototype;
        return;
      }
      var clsPrototype = Object.create(sup.prototype);
      copyProperties(cls.prototype, clsPrototype);
      cls.prototype = clsPrototype;
    }
  }
  function inheritMany(sup, classes) {
    for (var i = 0; i < classes.length; i++)
      inherit(classes[i], sup);
  }
  function mixin(cls, mixin) {
    mixinProperties(mixin.prototype, cls.prototype);
    cls.prototype.constructor = cls;
  }
  function lazyOld(holder, name, getterName, initializer) {
    var uninitializedSentinel = holder;
    holder[name] = uninitializedSentinel;
    holder[getterName] = function() {
      holder[getterName] = function() {
        H.throwCyclicInit(name);
      };
      var result;
      var sentinelInProgress = initializer;
      try {
        if (holder[name] === uninitializedSentinel) {
          result = holder[name] = sentinelInProgress;
          result = holder[name] = initializer();
        } else
          result = holder[name];
      } finally {
        if (result === sentinelInProgress)
          holder[name] = null;
        holder[getterName] = function() {
          return this[name];
        };
      }
      return result;
    };
  }
  function lazy(holder, name, getterName, initializer) {
    var uninitializedSentinel = holder;
    holder[name] = uninitializedSentinel;
    holder[getterName] = function() {
      if (holder[name] === uninitializedSentinel)
        holder[name] = initializer();
      holder[getterName] = function() {
        return this[name];
      };
      return holder[name];
    };
  }
  function lazyFinal(holder, name, getterName, initializer) {
    var uninitializedSentinel = holder;
    holder[name] = uninitializedSentinel;
    holder[getterName] = function() {
      if (holder[name] === uninitializedSentinel) {
        var value = initializer();
        if (holder[name] !== uninitializedSentinel)
          H.throwLateFieldADI(name);
        holder[name] = value;
      }
      holder[getterName] = function() {
        return this[name];
      };
      return holder[name];
    };
  }
  function makeConstList(list) {
    list.immutable$list = Array;
    list.fixed$length = Array;
    return list;
  }
  function convertToFastObject(properties) {
    function t() {
    }
    t.prototype = properties;
    new t();
    return properties;
  }
  function convertAllToFastObject(arrayOfObjects) {
    for (var i = 0; i < arrayOfObjects.length; ++i)
      convertToFastObject(arrayOfObjects[i]);
  }
  var functionCounter = 0;
  function instanceTearOffGetter(isIntercepted, parameters) {
    var name = parameters.fs[0];
    if (isIntercepted)
      return new Function("parameters, createTearOffClass, cache", "return function tearOff_" + name + functionCounter++ + "(receiver) {" + "if (cache === null) cache = createTearOffClass(parameters);" + "return new cache(receiver, this);" + "}")(parameters, H.closureFromTearOff, null);
    else
      return new Function("parameters, createTearOffClass, cache", "return function tearOff_" + name + functionCounter++ + "() {" + "if (cache === null) cache = createTearOffClass(parameters);" + "return new cache(this, null);" + "}")(parameters, H.closureFromTearOff, null);
  }
  function staticTearOffGetter(parameters) {
    var cache = null;
    return function() {
      if (cache === null)
        cache = H.closureFromTearOff(parameters).prototype;
      return cache;
    };
  }
  var typesOffset = 0;
  function tearOffParameters(container, isStatic, isIntercepted, requiredParameterCount, optionalParameterDefaultValues, callNames, funsOrNames, funType, applyIndex, needsDirectAccess) {
    if (typeof funType == "number")
      funType += typesOffset;
    return {co: container, iS: isStatic, iI: isIntercepted, rC: requiredParameterCount, dV: optionalParameterDefaultValues, cs: callNames, fs: funsOrNames, fT: funType, aI: applyIndex || 0, nDA: needsDirectAccess};
  }
  function installStaticTearOff(holder, getterName, requiredParameterCount, optionalParameterDefaultValues, callNames, funsOrNames, funType, applyIndex) {
    var parameters = tearOffParameters(holder, true, false, requiredParameterCount, optionalParameterDefaultValues, callNames, funsOrNames, funType, applyIndex, false);
    var getterFunction = staticTearOffGetter(parameters);
    holder[getterName] = getterFunction;
  }
  function installInstanceTearOff(prototype, getterName, isIntercepted, requiredParameterCount, optionalParameterDefaultValues, callNames, funsOrNames, funType, applyIndex, needsDirectAccess) {
    isIntercepted = !!isIntercepted;
    var parameters = tearOffParameters(prototype, false, isIntercepted, requiredParameterCount, optionalParameterDefaultValues, callNames, funsOrNames, funType, applyIndex, !!needsDirectAccess);
    var getterFunction = instanceTearOffGetter(isIntercepted, parameters);
    prototype[getterName] = getterFunction;
  }
  function setOrUpdateInterceptorsByTag(newTags) {
    var tags = init.interceptorsByTag;
    if (!tags) {
      init.interceptorsByTag = newTags;
      return;
    }
    copyProperties(newTags, tags);
  }
  function setOrUpdateLeafTags(newTags) {
    var tags = init.leafTags;
    if (!tags) {
      init.leafTags = newTags;
      return;
    }
    copyProperties(newTags, tags);
  }
  function updateTypes(newTypes) {
    var types = init.types;
    var length = types.length;
    types.push.apply(types, newTypes);
    return length;
  }
  function updateHolder(holder, newHolder) {
    copyProperties(newHolder, holder);
    return holder;
  }
  var hunkHelpers = function() {
    var mkInstance = function(isIntercepted, requiredParameterCount, optionalParameterDefaultValues, callNames, applyIndex) {
        return function(container, getterName, name, funType) {
          return installInstanceTearOff(container, getterName, isIntercepted, requiredParameterCount, optionalParameterDefaultValues, callNames, [name], funType, applyIndex, false);
        };
      },
      mkStatic = function(requiredParameterCount, optionalParameterDefaultValues, callNames, applyIndex) {
        return function(container, getterName, name, funType) {
          return installStaticTearOff(container, getterName, requiredParameterCount, optionalParameterDefaultValues, callNames, [name], funType, applyIndex);
        };
      };
    return {inherit: inherit, inheritMany: inheritMany, mixin: mixin, installStaticTearOff: installStaticTearOff, installInstanceTearOff: installInstanceTearOff, _instance_0u: mkInstance(0, 0, null, ["call$0"], 0), _instance_1u: mkInstance(0, 1, null, ["call$1"], 0), _instance_2u: mkInstance(0, 2, null, ["call$2"], 0), _instance_0i: mkInstance(1, 0, null, ["call$0"], 0), _instance_1i: mkInstance(1, 1, null, ["call$1"], 0), _instance_2i: mkInstance(1, 2, null, ["call$2"], 0), _static_0: mkStatic(0, null, ["call$0"], 0), _static_1: mkStatic(1, null, ["call$1"], 0), _static_2: mkStatic(2, null, ["call$2"], 0), makeConstList: makeConstList, lazy: lazy, lazyFinal: lazyFinal, lazyOld: lazyOld, updateHolder: updateHolder, convertToFastObject: convertToFastObject, setFunctionNamesIfNecessary: setFunctionNamesIfNecessary, updateTypes: updateTypes, setOrUpdateInterceptorsByTag: setOrUpdateInterceptorsByTag, setOrUpdateLeafTags: setOrUpdateLeafTags};
  }();
  function initializeDeferredHunk(hunk) {
    typesOffset = init.types.length;
    hunk(hunkHelpers, init, holders, $);
  }
  var C = {},
  E = {JsError: function JsError() {
    }},
  H = {JS_CONST: function JS_CONST() {
    }, LateError: function LateError(t0) {
      this._message = t0;
    }, ListIterator: function ListIterator(t0, t1) {
      var _ = this;
      _.__internal$_iterable = t0;
      _.__internal$_length = t1;
      _.__internal$_index = 0;
      _.__internal$_current = null;
    }, FixedLengthListMixin: function FixedLengthListMixin() {
    },
    unminifyOrTag(rawClassName) {
      var preserved = init.mangledGlobalNames[rawClassName];
      if (preserved != null)
        return preserved;
      return rawClassName;
    },
    isJsIndexable(object, record) {
      var result;
      if (record != null) {
        result = record.x;
        if (result != null)
          return result;
      }
      return type$.JavaScriptIndexingBehavior_dynamic._is(object);
    },
    S(value) {
      var res;
      if (typeof value == "string")
        return value;
      if (typeof value == "number") {
        if (value !== 0)
          return "" + value;
      } else if (true === value)
        return "true";
      else if (false === value)
        return "false";
      else if (value == null)
        return "null";
      res = J.toString$0$(value);
      return res;
    },
    Primitives_objectTypeName(object) {
      return H.Primitives__objectTypeNameNewRti(object);
    },
    Primitives__objectTypeNameNewRti(object) {
      var dispatchName, t1, $constructor, constructorName;
      if (object instanceof P.Object)
        return H._rtiToString(H.instanceType(object), null);
      if (J.getInterceptor$(object) === C.Interceptor_methods || type$.UnknownJavaScriptObject._is(object)) {
        dispatchName = C.C_JS_CONST(object);
        t1 = dispatchName !== "Object" && dispatchName !== "";
        if (t1)
          return dispatchName;
        $constructor = object.constructor;
        if (typeof $constructor == "function") {
          constructorName = $constructor.name;
          if (typeof constructorName == "string")
            t1 = constructorName !== "Object" && constructorName !== "";
          else
            t1 = false;
          if (t1)
            return constructorName;
        }
      }
      return H._rtiToString(H.instanceType(object), null);
    },
    wrapException(ex) {
      var wrapper, t1;
      if (ex == null)
        ex = new P.NullThrownError();
      wrapper = new Error();
      wrapper.dartException = ex;
      t1 = H.toStringWrapper;
      if ("defineProperty" in Object) {
        Object.defineProperty(wrapper, "message", {get: t1});
        wrapper.name = "";
      } else
        wrapper.toString = t1;
      return wrapper;
    },
    toStringWrapper() {
      return J.toString$0$(this.dartException);
    },
    throwExpression(ex) {
      throw H.wrapException(ex);
    },
    throwConcurrentModificationError(collection) {
      throw H.wrapException(P.ConcurrentModificationError$(collection));
    },
    Closure_fromTearOff(parameters) {
      var $prototype, $constructor, t2, trampoline, applyTrampoline, i, stub, stub0, stubName, stubCallName,
        container = parameters.co,
        isStatic = parameters.iS,
        isIntercepted = parameters.iI,
        needsDirectAccess = parameters.nDA,
        applyTrampolineIndex = parameters.aI,
        funsOrNames = parameters.fs,
        callNames = parameters.cs,
        $name = funsOrNames[0],
        callName = callNames[0],
        $function = container[$name],
        t1 = parameters.fT;
      t1.toString;
      $prototype = isStatic ? Object.create(new H.StaticClosure().constructor.prototype) : Object.create(new H.BoundClosure(null, null).constructor.prototype);
      $prototype.$initialize = $prototype.constructor;
      if (isStatic)
        $constructor = function static_tear_off() {
          this.$initialize();
        };
      else {
        t2 = $.Closure_functionCounter;
        $.Closure_functionCounter = t2 + 1;
        t2 = new Function("a,b" + t2, "this.$initialize(a,b" + t2 + ")");
        $constructor = t2;
      }
      $prototype.constructor = $constructor;
      $constructor.prototype = $prototype;
      $prototype.$_name = $name;
      $prototype.$_target = $function;
      t2 = !isStatic;
      if (t2)
        trampoline = H.Closure_forwardCallTo($name, $function, isIntercepted, needsDirectAccess);
      else {
        $prototype.$static_name = $name;
        trampoline = $function;
      }
      $prototype.$signature = H.Closure__computeSignatureFunctionNewRti(t1, isStatic, isIntercepted);
      $prototype[callName] = trampoline;
      for (applyTrampoline = trampoline, i = 1; i < funsOrNames.length; ++i) {
        stub = funsOrNames[i];
        if (typeof stub == "string") {
          stub0 = container[stub];
          stubName = stub;
          stub = stub0;
        } else
          stubName = "";
        stubCallName = callNames[i];
        if (stubCallName != null) {
          if (t2)
            stub = H.Closure_forwardCallTo(stubName, stub, isIntercepted, needsDirectAccess);
          $prototype[stubCallName] = stub;
        }
        if (i === applyTrampolineIndex)
          applyTrampoline = stub;
      }
      $prototype["call*"] = applyTrampoline;
      $prototype.$requiredArgCount = parameters.rC;
      $prototype.$defaultValues = parameters.dV;
      return $constructor;
    },
    Closure__computeSignatureFunctionNewRti(functionType, isStatic, isIntercepted) {
      if (typeof functionType == "number")
        return functionType;
      if (typeof functionType == "string") {
        if (isStatic)
          throw H.wrapException("Cannot compute signature for static tearoff.");
        return function(recipe, evalOnReceiver) {
          return function() {
            return evalOnReceiver(this, recipe);
          };
        }(functionType, H.BoundClosure_evalRecipe);
      }
      throw H.wrapException("Error in functionType of tearoff");
    },
    Closure_cspForwardCall(arity, needsDirectAccess, stubName, $function) {
      var getReceiver = H.BoundClosure_receiverOf;
      switch (needsDirectAccess ? -1 : arity) {
        case 0:
          return function(entry, receiverOf) {
            return function() {
              return receiverOf(this)[entry]();
            };
          }(stubName, getReceiver);
        case 1:
          return function(entry, receiverOf) {
            return function(a) {
              return receiverOf(this)[entry](a);
            };
          }(stubName, getReceiver);
        case 2:
          return function(entry, receiverOf) {
            return function(a, b) {
              return receiverOf(this)[entry](a, b);
            };
          }(stubName, getReceiver);
        case 3:
          return function(entry, receiverOf) {
            return function(a, b, c) {
              return receiverOf(this)[entry](a, b, c);
            };
          }(stubName, getReceiver);
        case 4:
          return function(entry, receiverOf) {
            return function(a, b, c, d) {
              return receiverOf(this)[entry](a, b, c, d);
            };
          }(stubName, getReceiver);
        case 5:
          return function(entry, receiverOf) {
            return function(a, b, c, d, e) {
              return receiverOf(this)[entry](a, b, c, d, e);
            };
          }(stubName, getReceiver);
        default:
          return function(f, receiverOf) {
            return function() {
              return f.apply(receiverOf(this), arguments);
            };
          }($function, getReceiver);
      }
    },
    Closure_forwardCallTo(stubName, $function, isIntercepted, needsDirectAccess) {
      var arity, t1, selfName, t2, $arguments,
        _s8_ = "receiver";
      if (isIntercepted)
        return H.Closure_forwardInterceptedCallTo(stubName, $function, needsDirectAccess);
      arity = $function.length;
      t1 = needsDirectAccess || arity >= 27;
      if (t1)
        return H.Closure_cspForwardCall(arity, needsDirectAccess, stubName, $function);
      if (arity === 0) {
        t1 = $.Closure_functionCounter;
        $.Closure_functionCounter = t1 + 1;
        selfName = "self" + H.S(t1);
        t1 = "return function(){var " + selfName + " = this.";
        t2 = $.BoundClosure__receiverFieldNameCache;
        return new Function(t1 + (t2 == null ? $.BoundClosure__receiverFieldNameCache = H.BoundClosure__computeFieldNamed(_s8_) : t2) + ";return " + selfName + "." + stubName + "();}")();
      }
      $arguments = "abcdefghijklmnopqrstuvwxyz".split("").splice(0, arity).join(",");
      t1 = $.Closure_functionCounter;
      $.Closure_functionCounter = t1 + 1;
      $arguments += H.S(t1);
      t1 = "return function(" + $arguments + "){return this.";
      t2 = $.BoundClosure__receiverFieldNameCache;
      return new Function(t1 + (t2 == null ? $.BoundClosure__receiverFieldNameCache = H.BoundClosure__computeFieldNamed(_s8_) : t2) + "." + stubName + "(" + $arguments + ");}")();
    },
    Closure_cspForwardInterceptedCall(arity, needsDirectAccess, stubName, $function) {
      var getReceiver = H.BoundClosure_receiverOf,
        getInterceptor = H.BoundClosure_interceptorOf;
      switch (needsDirectAccess ? -1 : arity) {
        case 0:
          throw H.wrapException(new H.RuntimeError("Intercepted function with no arguments."));
        case 1:
          return function(entry, interceptorOf, receiverOf) {
            return function() {
              return interceptorOf(this)[entry](receiverOf(this));
            };
          }(stubName, getInterceptor, getReceiver);
        case 2:
          return function(entry, interceptorOf, receiverOf) {
            return function(a) {
              return interceptorOf(this)[entry](receiverOf(this), a);
            };
          }(stubName, getInterceptor, getReceiver);
        case 3:
          return function(entry, interceptorOf, receiverOf) {
            return function(a, b) {
              return interceptorOf(this)[entry](receiverOf(this), a, b);
            };
          }(stubName, getInterceptor, getReceiver);
        case 4:
          return function(entry, interceptorOf, receiverOf) {
            return function(a, b, c) {
              return interceptorOf(this)[entry](receiverOf(this), a, b, c);
            };
          }(stubName, getInterceptor, getReceiver);
        case 5:
          return function(entry, interceptorOf, receiverOf) {
            return function(a, b, c, d) {
              return interceptorOf(this)[entry](receiverOf(this), a, b, c, d);
            };
          }(stubName, getInterceptor, getReceiver);
        case 6:
          return function(entry, interceptorOf, receiverOf) {
            return function(a, b, c, d, e) {
              return interceptorOf(this)[entry](receiverOf(this), a, b, c, d, e);
            };
          }(stubName, getInterceptor, getReceiver);
        default:
          return function(f, interceptorOf, receiverOf) {
            return function() {
              var a = [receiverOf(this)];
              Array.prototype.push.apply(a, arguments);
              return f.apply(interceptorOf(this), a);
            };
          }($function, getInterceptor, getReceiver);
      }
    },
    Closure_forwardInterceptedCallTo(stubName, $function, needsDirectAccess) {
      var receiverField, arity, t1, t2, $arguments,
        interceptorField = $.BoundClosure__interceptorFieldNameCache;
      if (interceptorField == null)
        interceptorField = $.BoundClosure__interceptorFieldNameCache = H.BoundClosure__computeFieldNamed("interceptor");
      receiverField = $.BoundClosure__receiverFieldNameCache;
      if (receiverField == null)
        receiverField = $.BoundClosure__receiverFieldNameCache = H.BoundClosure__computeFieldNamed("receiver");
      arity = $function.length;
      t1 = needsDirectAccess || arity >= 28;
      if (t1)
        return H.Closure_cspForwardInterceptedCall(arity, needsDirectAccess, stubName, $function);
      if (arity === 1) {
        t1 = "return function(){return this." + interceptorField + "." + stubName + "(this." + receiverField + ");";
        t2 = $.Closure_functionCounter;
        $.Closure_functionCounter = t2 + 1;
        return new Function(t1 + H.S(t2) + "}")();
      }
      $arguments = "abcdefghijklmnopqrstuvwxyz".split("").splice(0, arity - 1).join(",");
      t1 = "return function(" + $arguments + "){return this." + interceptorField + "." + stubName + "(this." + receiverField + ", " + $arguments + ");";
      t2 = $.Closure_functionCounter;
      $.Closure_functionCounter = t2 + 1;
      return new Function(t1 + H.S(t2) + "}")();
    },
    closureFromTearOff(parameters) {
      return H.Closure_fromTearOff(parameters);
    },
    BoundClosure_evalRecipe(closure, recipe) {
      return H._Universe_evalInEnvironment(init.typeUniverse, H.instanceType(closure._receiver), recipe);
    },
    BoundClosure_receiverOf(closure) {
      return closure._receiver;
    },
    BoundClosure_interceptorOf(closure) {
      return closure._interceptor;
    },
    BoundClosure__computeFieldNamed(fieldName) {
      var names, i, $name,
        template = new H.BoundClosure("receiver", "interceptor"),
        t1 = Object.getOwnPropertyNames(template);
      t1.fixed$length = Array;
      names = t1;
      for (t1 = names.length, i = 0; i < t1; ++i) {
        $name = names[i];
        if (template[$name] === fieldName)
          return $name;
      }
      throw H.wrapException(P.ArgumentError$("Field name " + fieldName + " not found."));
    },
    throwCyclicInit(staticName) {
      throw H.wrapException(new P.CyclicInitializationError(staticName));
    },
    getIsolateAffinityTag($name) {
      return init.getIsolateTag($name);
    },
    lookupAndCacheInterceptor(obj) {
      var interceptor, interceptorClass, altTag, mark, t1,
        tag = $.getTagFunction.call$1(obj),
        record = $.dispatchRecordsForInstanceTags[tag];
      if (record != null) {
        Object.defineProperty(obj, init.dispatchPropertyName, {value: record, enumerable: false, writable: true, configurable: true});
        return record.i;
      }
      interceptor = $.interceptorsForUncacheableTags[tag];
      if (interceptor != null)
        return interceptor;
      interceptorClass = init.interceptorsByTag[tag];
      if (interceptorClass == null) {
        altTag = $.alternateTagFunction.call$2(obj, tag);
        if (altTag != null) {
          record = $.dispatchRecordsForInstanceTags[altTag];
          if (record != null) {
            Object.defineProperty(obj, init.dispatchPropertyName, {value: record, enumerable: false, writable: true, configurable: true});
            return record.i;
          }
          interceptor = $.interceptorsForUncacheableTags[altTag];
          if (interceptor != null)
            return interceptor;
          interceptorClass = init.interceptorsByTag[altTag];
          tag = altTag;
        }
      }
      if (interceptorClass == null)
        return null;
      interceptor = interceptorClass.prototype;
      mark = tag[0];
      if (mark === "!") {
        record = H.makeLeafDispatchRecord(interceptor);
        $.dispatchRecordsForInstanceTags[tag] = record;
        Object.defineProperty(obj, init.dispatchPropertyName, {value: record, enumerable: false, writable: true, configurable: true});
        return record.i;
      }
      if (mark === "~") {
        $.interceptorsForUncacheableTags[tag] = interceptor;
        return interceptor;
      }
      if (mark === "-") {
        t1 = H.makeLeafDispatchRecord(interceptor);
        Object.defineProperty(Object.getPrototypeOf(obj), init.dispatchPropertyName, {value: t1, enumerable: false, writable: true, configurable: true});
        return t1.i;
      }
      if (mark === "+")
        return H.patchInteriorProto(obj, interceptor);
      if (mark === "*")
        throw H.wrapException(P.UnimplementedError$(tag));
      if (init.leafTags[tag] === true) {
        t1 = H.makeLeafDispatchRecord(interceptor);
        Object.defineProperty(Object.getPrototypeOf(obj), init.dispatchPropertyName, {value: t1, enumerable: false, writable: true, configurable: true});
        return t1.i;
      } else
        return H.patchInteriorProto(obj, interceptor);
    },
    patchInteriorProto(obj, interceptor) {
      var proto = Object.getPrototypeOf(obj);
      Object.defineProperty(proto, init.dispatchPropertyName, {value: J.makeDispatchRecord(interceptor, proto, null, null), enumerable: false, writable: true, configurable: true});
      return interceptor;
    },
    makeLeafDispatchRecord(interceptor) {
      return J.makeDispatchRecord(interceptor, false, null, !!interceptor.$isJavaScriptIndexingBehavior);
    },
    makeDefaultDispatchRecord(tag, interceptorClass, proto) {
      var interceptor = interceptorClass.prototype;
      if (init.leafTags[tag] === true)
        return H.makeLeafDispatchRecord(interceptor);
      else
        return J.makeDispatchRecord(interceptor, proto, null, null);
    },
    initNativeDispatch() {
      if (true === $.initNativeDispatchFlag)
        return;
      $.initNativeDispatchFlag = true;
      H.initNativeDispatchContinue();
    },
    initNativeDispatchContinue() {
      var map, tags, fun, i, tag, proto, record, interceptorClass;
      $.dispatchRecordsForInstanceTags = Object.create(null);
      $.interceptorsForUncacheableTags = Object.create(null);
      H.initHooks();
      map = init.interceptorsByTag;
      tags = Object.getOwnPropertyNames(map);
      if (typeof window != "undefined") {
        window;
        fun = function() {
        };
        for (i = 0; i < tags.length; ++i) {
          tag = tags[i];
          proto = $.prototypeForTagFunction.call$1(tag);
          if (proto != null) {
            record = H.makeDefaultDispatchRecord(tag, map[tag], proto);
            if (record != null) {
              Object.defineProperty(proto, init.dispatchPropertyName, {value: record, enumerable: false, writable: true, configurable: true});
              fun.prototype = proto;
            }
          }
        }
      }
      for (i = 0; i < tags.length; ++i) {
        tag = tags[i];
        if (/^[A-Za-z_]/.test(tag)) {
          interceptorClass = map[tag];
          map["!" + tag] = interceptorClass;
          map["~" + tag] = interceptorClass;
          map["-" + tag] = interceptorClass;
          map["+" + tag] = interceptorClass;
          map["*" + tag] = interceptorClass;
        }
      }
    },
    initHooks() {
      var transformers, i, transformer, getTag, getUnknownTag, prototypeForTag,
        hooks = C.C_JS_CONST0();
      hooks = H.applyHooksTransformer(C.C_JS_CONST1, H.applyHooksTransformer(C.C_JS_CONST2, H.applyHooksTransformer(C.C_JS_CONST3, H.applyHooksTransformer(C.C_JS_CONST3, H.applyHooksTransformer(C.C_JS_CONST4, H.applyHooksTransformer(C.C_JS_CONST5, H.applyHooksTransformer(C.C_JS_CONST6(C.C_JS_CONST), hooks)))))));
      if (typeof dartNativeDispatchHooksTransformer != "undefined") {
        transformers = dartNativeDispatchHooksTransformer;
        if (typeof transformers == "function")
          transformers = [transformers];
        if (transformers.constructor == Array)
          for (i = 0; i < transformers.length; ++i) {
            transformer = transformers[i];
            if (typeof transformer == "function")
              hooks = transformer(hooks) || hooks;
          }
      }
      getTag = hooks.getTag;
      getUnknownTag = hooks.getUnknownTag;
      prototypeForTag = hooks.prototypeForTag;
      $.getTagFunction = new H.initHooks_closure(getTag);
      $.alternateTagFunction = new H.initHooks_closure0(getUnknownTag);
      $.prototypeForTagFunction = new H.initHooks_closure1(prototypeForTag);
    },
    applyHooksTransformer(transformer, hooks) {
      return transformer(hooks) || hooks;
    },
    Closure: function Closure() {
    },
    Closure2Args: function Closure2Args() {
    },
    TearOffClosure: function TearOffClosure() {
    },
    StaticClosure: function StaticClosure() {
    },
    BoundClosure: function BoundClosure(t0, t1) {
      this._receiver = t0;
      this._interceptor = t1;
    },
    RuntimeError: function RuntimeError(t0) {
      this.message = t0;
    },
    initHooks_closure: function initHooks_closure(t0) {
      this.getTag = t0;
    },
    initHooks_closure0: function initHooks_closure0(t0) {
      this.getUnknownTag = t0;
    },
    initHooks_closure1: function initHooks_closure1(t0) {
      this.prototypeForTag = t0;
    },
    NativeTypedData: function NativeTypedData() {
    },
    NativeTypedArray: function NativeTypedArray() {
    },
    NativeTypedArrayOfInt: function NativeTypedArrayOfInt() {
    },
    NativeUint8List: function NativeUint8List() {
    },
    _NativeTypedArrayOfInt_NativeTypedArray_ListMixin: function _NativeTypedArrayOfInt_NativeTypedArray_ListMixin() {
    },
    _NativeTypedArrayOfInt_NativeTypedArray_ListMixin_FixedLengthListMixin: function _NativeTypedArrayOfInt_NativeTypedArray_ListMixin_FixedLengthListMixin() {
    },
    Rti__getQuestionFromStar(universe, rti) {
      var question = rti._precomputed1;
      return question == null ? rti._precomputed1 = H._Universe__lookupQuestionRti(universe, rti._primary, true) : question;
    },
    Rti__getFutureFromFutureOr(universe, rti) {
      var future = rti._precomputed1;
      return future == null ? rti._precomputed1 = H._Universe__lookupInterfaceRti(universe, "Future", [rti._primary]) : future;
    },
    Rti__isUnionOfFunctionType(rti) {
      var kind = rti._kind;
      if (kind === 6 || kind === 7 || kind === 8)
        return H.Rti__isUnionOfFunctionType(rti._primary);
      return kind === 11 || kind === 12;
    },
    Rti__getCanonicalRecipe(rti) {
      return rti._canonicalRecipe;
    },
    findType(recipe) {
      return H._Universe_eval(init.typeUniverse, recipe, false);
    },
    _substitute(universe, rti, typeArguments, depth) {
      var baseType, substitutedBaseType, interfaceTypeArguments, substitutedInterfaceTypeArguments, base, substitutedBase, $arguments, substitutedArguments, returnType, substitutedReturnType, functionParameters, substitutedFunctionParameters, bounds, substitutedBounds, index, argument,
        kind = rti._kind;
      switch (kind) {
        case 5:
        case 1:
        case 2:
        case 3:
        case 4:
          return rti;
        case 6:
          baseType = rti._primary;
          substitutedBaseType = H._substitute(universe, baseType, typeArguments, depth);
          if (substitutedBaseType === baseType)
            return rti;
          return H._Universe__lookupStarRti(universe, substitutedBaseType, true);
        case 7:
          baseType = rti._primary;
          substitutedBaseType = H._substitute(universe, baseType, typeArguments, depth);
          if (substitutedBaseType === baseType)
            return rti;
          return H._Universe__lookupQuestionRti(universe, substitutedBaseType, true);
        case 8:
          baseType = rti._primary;
          substitutedBaseType = H._substitute(universe, baseType, typeArguments, depth);
          if (substitutedBaseType === baseType)
            return rti;
          return H._Universe__lookupFutureOrRti(universe, substitutedBaseType, true);
        case 9:
          interfaceTypeArguments = rti._rest;
          substitutedInterfaceTypeArguments = H._substituteArray(universe, interfaceTypeArguments, typeArguments, depth);
          if (substitutedInterfaceTypeArguments === interfaceTypeArguments)
            return rti;
          return H._Universe__lookupInterfaceRti(universe, rti._primary, substitutedInterfaceTypeArguments);
        case 10:
          base = rti._primary;
          substitutedBase = H._substitute(universe, base, typeArguments, depth);
          $arguments = rti._rest;
          substitutedArguments = H._substituteArray(universe, $arguments, typeArguments, depth);
          if (substitutedBase === base && substitutedArguments === $arguments)
            return rti;
          return H._Universe__lookupBindingRti(universe, substitutedBase, substitutedArguments);
        case 11:
          returnType = rti._primary;
          substitutedReturnType = H._substitute(universe, returnType, typeArguments, depth);
          functionParameters = rti._rest;
          substitutedFunctionParameters = H._substituteFunctionParameters(universe, functionParameters, typeArguments, depth);
          if (substitutedReturnType === returnType && substitutedFunctionParameters === functionParameters)
            return rti;
          return H._Universe__lookupFunctionRti(universe, substitutedReturnType, substitutedFunctionParameters);
        case 12:
          bounds = rti._rest;
          depth += bounds.length;
          substitutedBounds = H._substituteArray(universe, bounds, typeArguments, depth);
          base = rti._primary;
          substitutedBase = H._substitute(universe, base, typeArguments, depth);
          if (substitutedBounds === bounds && substitutedBase === base)
            return rti;
          return H._Universe__lookupGenericFunctionRti(universe, substitutedBase, substitutedBounds, true);
        case 13:
          index = rti._primary;
          if (index < depth)
            return rti;
          argument = typeArguments[index - depth];
          if (argument == null)
            return rti;
          return argument;
        default:
          throw H.wrapException(P.AssertionError$("Attempted to substitute unexpected RTI kind " + kind));
      }
    },
    _substituteArray(universe, rtiArray, typeArguments, depth) {
      var changed, i, rti, substitutedRti,
        $length = rtiArray.length,
        result = H._Utils_newArrayOrEmpty($length);
      for (changed = false, i = 0; i < $length; ++i) {
        rti = rtiArray[i];
        substitutedRti = H._substitute(universe, rti, typeArguments, depth);
        if (substitutedRti !== rti)
          changed = true;
        result[i] = substitutedRti;
      }
      return changed ? result : rtiArray;
    },
    _substituteNamed(universe, namedArray, typeArguments, depth) {
      var changed, i, t1, t2, rti, substitutedRti,
        $length = namedArray.length,
        result = H._Utils_newArrayOrEmpty($length);
      for (changed = false, i = 0; i < $length; i += 3) {
        t1 = namedArray[i];
        t2 = namedArray[i + 1];
        rti = namedArray[i + 2];
        substitutedRti = H._substitute(universe, rti, typeArguments, depth);
        if (substitutedRti !== rti)
          changed = true;
        result.splice(i, 3, t1, t2, substitutedRti);
      }
      return changed ? result : namedArray;
    },
    _substituteFunctionParameters(universe, functionParameters, typeArguments, depth) {
      var result,
        requiredPositional = functionParameters._requiredPositional,
        substitutedRequiredPositional = H._substituteArray(universe, requiredPositional, typeArguments, depth),
        optionalPositional = functionParameters._optionalPositional,
        substitutedOptionalPositional = H._substituteArray(universe, optionalPositional, typeArguments, depth),
        named = functionParameters._named,
        substitutedNamed = H._substituteNamed(universe, named, typeArguments, depth);
      if (substitutedRequiredPositional === requiredPositional && substitutedOptionalPositional === optionalPositional && substitutedNamed === named)
        return functionParameters;
      result = new H._FunctionParameters();
      result._requiredPositional = substitutedRequiredPositional;
      result._optionalPositional = substitutedOptionalPositional;
      result._named = substitutedNamed;
      return result;
    },
    closureFunctionType(closure) {
      var signature = closure.$signature;
      if (signature != null) {
        if (typeof signature == "number")
          return H.getTypeFromTypesTable(signature);
        return closure.$signature();
      }
      return null;
    },
    instanceOrFunctionType(object, testRti) {
      var rti;
      if (H.Rti__isUnionOfFunctionType(testRti))
        if (object instanceof H.Closure) {
          rti = H.closureFunctionType(object);
          if (rti != null)
            return rti;
        }
      return H.instanceType(object);
    },
    instanceType(object) {
      var rti;
      if (object instanceof P.Object) {
        rti = object.$ti;
        return rti != null ? rti : H._instanceTypeFromConstructor(object);
      }
      if (Array.isArray(object))
        return H._arrayInstanceType(object);
      return H._instanceTypeFromConstructor(J.getInterceptor$(object));
    },
    _arrayInstanceType(object) {
      var rti = object[init.arrayRti],
        defaultRti = type$.JSArray_dynamic;
      if (rti == null)
        return defaultRti;
      if (rti.constructor !== defaultRti.constructor)
        return defaultRti;
      return rti;
    },
    _instanceType(object) {
      var rti = object.$ti;
      return rti != null ? rti : H._instanceTypeFromConstructor(object);
    },
    _instanceTypeFromConstructor(instance) {
      var $constructor = instance.constructor,
        probe = $constructor.$ccache;
      if (probe != null)
        return probe;
      return H._instanceTypeFromConstructorMiss(instance, $constructor);
    },
    _instanceTypeFromConstructorMiss(instance, $constructor) {
      var effectiveConstructor = instance instanceof H.Closure ? instance.__proto__.__proto__.constructor : $constructor,
        rti = H._Universe_findErasedType(init.typeUniverse, effectiveConstructor.name);
      $constructor.$ccache = rti;
      return rti;
    },
    getTypeFromTypesTable(index) {
      var rti,
        table = init.types,
        type = table[index];
      if (typeof type == "string") {
        rti = H._Universe_eval(init.typeUniverse, type, false);
        table[index] = rti;
        return rti;
      }
      return type;
    },
    _installSpecializedIsTest(object) {
      var t1, unstarred, isFn, $name, testRti = this;
      if (testRti === type$.Object)
        return H._finishIsFn(testRti, object, H._isObject);
      if (!H.isStrongTopType(testRti))
        if (!(testRti === type$.legacy_Object))
          t1 = false;
        else
          t1 = true;
      else
        t1 = true;
      if (t1)
        return H._finishIsFn(testRti, object, H._isTop);
      t1 = testRti._kind;
      unstarred = t1 === 6 ? testRti._primary : testRti;
      if (unstarred === type$.int)
        isFn = H._isInt;
      else if (unstarred === type$.double || unstarred === type$.num)
        isFn = H._isNum;
      else if (unstarred === type$.String)
        isFn = H._isString;
      else
        isFn = unstarred === type$.bool ? H._isBool : null;
      if (isFn != null)
        return H._finishIsFn(testRti, object, isFn);
      if (unstarred._kind === 9) {
        $name = unstarred._primary;
        if (unstarred._rest.every(H.isTopType)) {
          testRti._specializedTestResource = "$is" + $name;
          if ($name === "List")
            return H._finishIsFn(testRti, object, H._isListTestViaProperty);
          return H._finishIsFn(testRti, object, H._isTestViaProperty);
        }
      } else if (t1 === 7)
        return H._finishIsFn(testRti, object, H._generalNullableIsTestImplementation);
      return H._finishIsFn(testRti, object, H._generalIsTestImplementation);
    },
    _finishIsFn(testRti, object, isFn) {
      testRti._is = isFn;
      return testRti._is(object);
    },
    _installSpecializedAsCheck(object) {
      var t1, testRti = this,
        asFn = H._generalAsCheckImplementation;
      if (!H.isStrongTopType(testRti))
        if (!(testRti === type$.legacy_Object))
          t1 = false;
        else
          t1 = true;
      else
        t1 = true;
      if (t1)
        asFn = H._asTop;
      else if (testRti === type$.Object)
        asFn = H._asObject;
      else {
        t1 = H.isNullable(testRti);
        if (t1)
          asFn = H._generalNullableAsCheckImplementation;
      }
      testRti._as = asFn;
      return testRti._as(object);
    },
    _nullIs(testRti) {
      var t1,
        kind = testRti._kind;
      if (!H.isStrongTopType(testRti))
        if (!(testRti === type$.legacy_Object))
          if (!(testRti === type$.legacy_Never))
            if (kind !== 7)
              t1 = kind === 8 && H._nullIs(testRti._primary) || testRti === type$.Null || testRti === type$.JSNull;
            else
              t1 = true;
          else
            t1 = true;
        else
          t1 = true;
      else
        t1 = true;
      return t1;
    },
    _generalIsTestImplementation(object) {
      var testRti = this;
      if (object == null)
        return H._nullIs(testRti);
      return H._isSubtype(init.typeUniverse, H.instanceOrFunctionType(object, testRti), null, testRti, null);
    },
    _generalNullableIsTestImplementation(object) {
      if (object == null)
        return true;
      return this._primary._is(object);
    },
    _isTestViaProperty(object) {
      var tag, testRti = this;
      if (object == null)
        return H._nullIs(testRti);
      tag = testRti._specializedTestResource;
      if (object instanceof P.Object)
        return !!object[tag];
      return !!J.getInterceptor$(object)[tag];
    },
    _isListTestViaProperty(object) {
      var tag, testRti = this;
      if (object == null)
        return H._nullIs(testRti);
      if (typeof object != "object")
        return false;
      if (Array.isArray(object))
        return true;
      tag = testRti._specializedTestResource;
      if (object instanceof P.Object)
        return !!object[tag];
      return !!J.getInterceptor$(object)[tag];
    },
    _generalAsCheckImplementation(object) {
      var t1, testRti = this;
      if (object == null) {
        t1 = H.isNullable(testRti);
        if (t1)
          return object;
      } else if (testRti._is(object))
        return object;
      H._failedAsCheck(object, testRti);
    },
    _generalNullableAsCheckImplementation(object) {
      var testRti = this;
      if (object == null)
        return object;
      else if (testRti._is(object))
        return object;
      H._failedAsCheck(object, testRti);
    },
    _failedAsCheck(object, testRti) {
      throw H.wrapException(H._TypeError$fromMessage(H._Error_compose(object, H.instanceOrFunctionType(object, testRti), H._rtiToString(testRti, null))));
    },
    _Error_compose(object, objectRti, checkedTypeDescription) {
      var objectDescription = P.Error_safeToString(object),
        objectTypeDescription = H._rtiToString(objectRti == null ? H.instanceType(object) : objectRti, null);
      return objectDescription + ": type '" + objectTypeDescription + "' is not a subtype of type '" + checkedTypeDescription + "'";
    },
    _TypeError$fromMessage(message) {
      return new H._TypeError("TypeError: " + message);
    },
    _TypeError__TypeError$forType(object, type) {
      return new H._TypeError("TypeError: " + H._Error_compose(object, null, type));
    },
    _isObject(object) {
      return object != null;
    },
    _asObject(object) {
      if (object != null)
        return object;
      throw H.wrapException(H._TypeError__TypeError$forType(object, "Object"));
    },
    _isTop(object) {
      return true;
    },
    _asTop(object) {
      return object;
    },
    _isBool(object) {
      return true === object || false === object;
    },
    _asBool(object) {
      if (true === object)
        return true;
      if (false === object)
        return false;
      throw H.wrapException(H._TypeError__TypeError$forType(object, "bool"));
    },
    _asBoolS(object) {
      if (true === object)
        return true;
      if (false === object)
        return false;
      if (object == null)
        return object;
      throw H.wrapException(H._TypeError__TypeError$forType(object, "bool"));
    },
    _asBoolQ(object) {
      if (true === object)