"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = _regeneratorRuntime;

function _regeneratorRuntime() {
  "use strict";

  exports.default = _regeneratorRuntime = function () {
    return _exports;
  };
  var _exports = {};
  var Op = Object.prototype;
  var hasOwn = Op.hasOwnProperty;
  var defineProperty = Object.defineProperty || function (obj, key, desc) {
    obj[key] = desc.value;
  };
  var undefined;
  var $Symbol = typeof Symbol === "function" ? Symbol : {};
  var iteratorSymbol = $Symbol.iterator || "@@iterator";
  var asyncIteratorSymbol = $Symbol.asyncIterator || "@@asyncIterator";
  var toStringTagSymbol = $Symbol.toStringTag || "@@toStringTag";
  function define(obj, key, value) {
    Object.defineProperty(obj, key, {
      value: value,
      enumerable: true,
      configurable: true,
      writable: true
    });
    return obj[key];
  }
  try {
    define({}, "");
  } catch (err) {
    define = function (obj, key, value) {
      return obj[key] = value;
    };
  }
  function wrap(innerFn, outerFn, self, tryLocsList) {
    var protoGenerator = outerFn && outerFn.prototype instanceof Generator ? outerFn : Generator;
    var generator = Object.create(protoGenerator.prototype);
    var context = new Context(tryLocsList || []);

    defineProperty(generator, "_invoke", {
      value: makeInvokeMethod(innerFn, self, context)
    });
    return generator;
  }
  _exports.wrap = wrap;

  function tryCatch(fn, obj, arg) {
    try {
      return {
        type: "normal",
        arg: fn.call(obj, arg)
      };
    } catch (err) {
      return {
        type: "throw",
        arg: err
      };
    }
  }
  var GenStateSuspendedStart = "suspendedStart";
  var GenStateSuspendedYield = "suspendedYield";
  var GenStateExecuting = "executing";
  var GenStateCompleted = "completed";

  var ContinueSentinel = {};

  function Generator() {}
  function GeneratorFunction() {}
  function GeneratorFunctionPrototype() {}

  var IteratorPrototype = {};
  define(IteratorPrototype, iteratorSymbol, function () {
    return this;
  });
  var getProto = Object.getPrototypeOf;
  var NativeIteratorPrototype = getProto && getProto(getProto(values([])));
  if (NativeIteratorPrototype && NativeIteratorPrototype !== Op && hasOwn.call(NativeIteratorPrototype, iteratorSymbol)) {
    IteratorPrototype = NativeIteratorPrototype;
  }
  var Gp = GeneratorFunctionPrototype.prototype = Generator.prototype = Object.create(IteratorPrototype);
  GeneratorFunction.prototype = GeneratorFunctionPrototype;
  defineProperty(Gp, "constructor", {
    value: GeneratorFunctionPrototype,
    configurable: true
  });
  defineProperty(GeneratorFunctionPrototype, "constructor", {
    value: GeneratorFunction,
    configurable: true
  });
  GeneratorFunction.displayName = define(GeneratorFunctionPrototype, toStringTagSymbol, "GeneratorFunction");

  function defineIteratorMethods(prototype) {
    ["next", "throw", "return"].forEach(function (method) {
      define(prototype, method, function (arg) {
        return this._invoke(method, arg);
      });
    });
  }
  _exports.isGeneratorFunction = function (genFun) {
    var ctor = typeof genFun === "function" && genFun.constructor;
    return ctor ? ctor === GeneratorFunction ||
    (ctor.displayName || ctor.name) === "GeneratorFunction" : false;
  };
  _exports.mark = function (genFun) {
    if (Object.setPrototypeOf) {
      Object.setPrototypeOf(genFun, GeneratorFunctionPrototype);
    } else {
      genFun.__proto__ = GeneratorFunctionPrototype;
      define(genFun, toStringTagSymbol, "GeneratorFunction");
    }
    genFun.prototype = Object.create(Gp);
    return genFun;
  };

  _exports.awrap = function (arg) {
    return {
      __await: arg
    };
  };
  function AsyncIterator(generator, PromiseImpl) {
    function invoke(method, arg, resolve, reject) {
      var record = tryCatch(generator[method], generator, arg);
      if (record.type === "throw") {
        reject(record.arg);
      } else {
        var result = record.arg;
        var value = result.value;
        if (value && typeof value === "object" && hasOwn.call(value, "__await")) {
          return PromiseImpl.resolve(value.__await).then(function (value) {
            invoke("next", value, resolve, reject);
          }, function (err) {
            invoke("throw", err, resolve, reject);
          });
        }
        return PromiseImpl.resolve(value).then(function (unwrapped) {
          result.value = unwrapped;
          resolve(result);
        }, function (error) {
          return invoke("throw", error, resolve, reject);
        });
      }
    }
    var previousPromise;
    function enqueue(method, arg) {
      function callInvokeWithMethodAndArg() {
        return new PromiseImpl(function (resolve, reject) {
          invoke(method, arg, resolve, reject);
        });
      }
      return previousPromise =
      previousPromise ? previousPromise.then(callInvokeWithMethodAndArg,
      callInvokeWithMethodAndArg) : callInvokeWithMethodAndArg();
    }

    defineProperty(this, "_invoke", {
      value: enqueue
    });
  }
  defineIteratorMethods(AsyncIterator.prototype);
  define(AsyncIterator.prototype, asyncIteratorSymbol, function () {
    return this;
  });
  _exports.AsyncIterator = AsyncIterator;

  _exports.async = function (innerFn, outerFn, self, tryLocsList, PromiseImpl) {
    if (PromiseImpl === void 0) PromiseImpl = Promise;
    var iter = new AsyncIterator(wrap(innerFn, outerFn, self, tryLocsList), PromiseImpl);
    return _exports.isGeneratorFunction(outerFn) ? iter : iter.next().then(function (result) {
      return result.done ? result.value : iter.next();
    });
  };
  function makeInvokeMethod(innerFn, self, context) {
    var state = GenStateSuspendedStart;
    return function invoke(method, arg) {
      if (state === GenStateExecuting) {
        throw new Error("Generator is already running");
      }
      if (state === GenStateCompleted) {
        if (method === "throw") {
          throw arg;
        }

        return doneResult();
      }
      context.method = method;
      context.arg = arg;
      while (true) {
        var delegate = context.delegate;
        if (delegate) {
          var delegateResult = maybeInvokeDelegate(delegate, context);
          if (delegateResult) {
            if (delegateResult === ContinueSentinel) continue;
            return delegateResult;
          }
        }
        if (context.method === "next") {
          context.sent = context._sent = context.arg;
        } else if (context.method === "throw") {
          if (state === GenStateSuspendedStart) {
            state = GenStateCompleted;
            throw context.arg;
          }
          context.dispatchException(context.arg);
        } else if (context.method === "return") {
          context.abrupt("return", context.arg);
        }
        state = GenStateExecuting;
        var record = tryCatch(innerFn, self, context);
        if (record.type === "normal") {
          state = context.done ? GenStateCompleted : GenStateSuspendedYield;
          if (record.arg === ContinueSentinel) {
            continue;
          }
          return {
            value: record.arg,
            done: context.done
          };
        } else if (record.type === "throw") {
          state = GenStateCompleted;
          context.method = "throw";
          context.arg = record.arg;
        }
      }
    };
  }

  function maybeInvokeDelegate(delegate, context) {
    var method = delegate.iterator[context.method];
    if (method === undefined) {
      context.delegate = null;
      if (context.method === "throw") {
        if (delegate.iterator["return"]) {
          context.method = "return";
          context.arg = undefined;
          maybeInvokeDelegate(delegate, context);
          if (context.method === "throw") {
            return ContinueSentinel;
          }
        }
        context.method = "throw";
        context.arg = new TypeError("The iterator does not provide a 'throw' method");
      }
      return ContinueSentinel;
    }
    var record = tryCatch(method, delegate.iterator, context.arg);
    if (record.type === "throw") {
      context.method = "throw";
      context.arg = record.arg;
      context.delegate = null;
      return ContinueSentinel;
    }
    var info = record.arg;
    if (!info) {
      context.method = "throw";
      context.arg = new TypeError("iterator result is not an object");
      context.delegate = null;
      return ContinueSentinel;
    }
    if (info.done) {
      context[delegate.resultName] = info.value;

      context.next = delegate.nextLoc;

      if (context.method !== "return") {
        context.method = "next";
        context.arg = undefined;
      }
    } else {
      return info;
    }

    context.delegate = null;
    return ContinueSentinel;
  }

  defineIteratorMethods(Gp);
  define(Gp, toStringTagSymbol, "Generator");

  define(Gp, iteratorSymbol, function () {
    return this;
  });
  define(Gp, "toString", function () {
    return "[object Generator]";
  });
  function pushTryEntry(locs) {
    var entry = {
      tryLoc: locs[0]
    };
    if (1 in locs) {
      entry.catchLoc = locs[1];
    }
    if (2 in locs) {
      entry.finallyLoc = locs[2];
      entry.afterLoc = locs[3];
    }
    this.tryEntries.push(entry);
  }
  function resetTryEntry(entry) {
    var record = entry.completion || {};
    record.type = "normal";
    delete record.arg;
    entry.completion = record;
  }
  function Context(tryLocsList) {
    this.tryEntries = [{
      tryLoc: "root"
    }];
    tryLocsList.forEach(pushTryEntry, this);
    this.reset(true);
  }
  _exports.keys = function (val) {
    var object = Object(val);
    var keys = [];
    for (var key in object) {
      keys.push(key);
    }
    keys.reverse();

    return function next() {
      while (keys.length) {
        var key = keys.pop();
        if (key in object) {
          next.value = key;
          next.done = false;
          return next;
        }
      }

      next.done = true;
      return next;
    };
  };
  function values(iterable) {
    if (iterable) {
      var iteratorMethod = iterable[iteratorSymbol];
      if (iteratorMethod) {
        return iteratorMethod.call(iterable);
      }
      if (typeof iterable.next === "function") {
        return iterable;
      }
      if (!isNaN(iterable.length)) {
        var i = -1,
          next = function next() {
            while (++i < iterable.length) {
              if (hasOwn.call(iterable, i)) {
                next.value = iterable[i];
                next.done = false;
                return next;
              }
            }
            next.value = undefined;
            next.done = true;
            return next;
          };
        return next.next = next;
      }
    }

    return {
      next: doneResult
    };
  }
  _exports.values = values;
  function doneResult() {
    return {
      value: undefined,
      done: true
    };
  }
  Context.prototype = {
    constructor: Context,
    reset: function (skipTempReset) {
      this.prev = 0;
      this.next = 0;
      this.sent = this._sent = undefined;
      this.done = false;
      this.delegate = null;
      this.method = "next";
      this.arg = undefined;
      this.tryEntries.forEach(resetTryEntry);
      if (!skipTempReset) {
        for (var name in this) {
          if (name.charAt(0) === "t" && hasOwn.call(this, name) && !isNaN(+name.slice(1))) {
            this[name] = undefined;
          }
        }
      }
    },
    stop: function () {
      this.done = true;
      var rootEntry = this.tryEntries[0];
      var rootRecord = rootEntry.completion;
      if (rootRecord.type === "throw") {
        throw rootRecord.arg;
      }
      return this.rval;
    },
    dispatchException: function (exception) {
      if (this.done) {
        throw exception;
      }
      var context = this;
      function handle(loc, caught) {
        record.type = "throw";
        record.arg = exception;
        context.next = loc;
        if (caught) {
          context.method = "next";
          context.arg = undefined;
        }
        return !!caught;
      }
      for (var i = this.tryEntries.length - 1; i >= 0; --i) {
        var entry = this.tryEntries[i];
        var record = entry.completion;
        if (entry.tryLoc === "root") {
          return handle("end");
        }
        if (entry.tryLoc <= this.prev) {
          var hasCatch = hasOwn.call(entry, "catchLoc");
          var hasFinally = hasOwn.call(entry, "finallyLoc");
          if (hasCatch && hasFinally) {
            if (this.prev < entry.catchLoc) {
              return handle(entry.catchLoc, true);
            } else if (this.prev < entry.finallyLoc) {
              return handle(entry.finallyLoc);
            }
          } else if (hasCatch) {
            if (this.prev < entry.catchLoc) {
              return handle(entry.catchLoc, true);
            }
          } else if (hasFinally) {
            if (this.prev < entry.finallyLoc) {
              return handle(entry.finallyLoc);
            }
          } else {
            throw new Error("try statement without catch or finally");
          }
        }
      }
    },
    abrupt: function (type, arg) {
      for (var i = this.tryEntries.length - 1; i >= 0; --i) {
        var entry = this.tryEntries[i];
        if (entry.tryLoc <= this.prev && hasOwn.call(entry, "finallyLoc") && this.prev < entry.finallyLoc) {
          var finallyEntry = entry;
          break;
        }
      }
      if (finallyEntry && (type === "break" || type === "continue") && finallyEntry.tryLoc <= arg && arg <= finallyEntry.finallyLoc) {
        finallyEntry = null;
      }
      var record = finallyEntry ? finallyEntry.completion : {};
      record.type = type;
      record.arg = arg;
      if (finallyEntry) {
        this.method = "next";
        this.next = finallyEntry.finallyLoc;
        return ContinueSentinel;
      }
      return this.complete(record);
    },
    complete: function (record, afterLoc) {
      if (record.type === "throw") {
        throw record.arg;
      }
      if (record.type === "break" || record.type === "continue") {
        this.next = record.arg;
      } else if (record.type === "return") {
        this.rval = this.arg = record.arg;
        this.method = "return";
        this.next = "end";
      } else if (record.type === "normal" && afterLoc) {
        this.next = afterLoc;
      }
      return ContinueSentinel;
    },
    finish: function (finallyLoc) {
      for (var i = this.tryEntries.length - 1; i >= 0; --i) {
        var entry = this.tryEntries[i];
        if (entry.finallyLoc === finallyLoc) {
          this.complete(entry.completion, entry.afterLoc);
          resetTryEntry(entry);
          return ContinueSentinel;
        }
      }
    },
    catch: function (tryLoc) {
      for (var i = this.tryEntries.length - 1; i >= 0; --i) {
        var entry = this.tryEntries[i];
        if (entry.tryLoc === tryLoc) {
          var record = entry.completion;
          if (record.type === "throw") {
            var thrown = record.arg;
            resetTryEntry(entry);
          }
          return thrown;
        }
      }

      throw new Error("illegal catch attempt");
    },
    delegateYield: function (iterable, resultName, nextLoc) {
      this.delegate = {
        iterator: values(iterable),
        resultName: resultName,
        nextLoc: nextLoc
      };
      if (this.method === "next") {
        this.arg = undefined;
      }
      return ContinueSentinel;
    }
  };

  return _exports;
}

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