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*****************************************************************************\r\nCopyright (c) Microsoft Corporation.\r\n\r\nPermission to use, copy, modify, and/or distribute this software for any\r\npurpose with or without fee is hereby granted.\r\n\r\nTHE SOFTWARE IS PROVIDED \"AS IS\" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH\r\nREGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY\r\nAND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,\r\nINDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM\r\nLOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR\r\nOTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR\r\nPERFORMANCE OF THIS SOFTWARE.\r\n***************************************************************************** */\n\n/* global Reflect, Promise */\nvar _extendStatics = function extendStatics(d, b) {\n  _extendStatics = Object.setPrototypeOf || {\n    __proto__: []\n  } instanceof Array && function (d, b) {\n    d.__proto__ = b;\n  } || function (d, b) {\n    for (var p in b) {\n      if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p];\n    }\n  };\n\n  return _extendStatics(d, b);\n};\n\nexport function __extends(d, b) {\n  if (typeof b !== \"function\" && b !== null) throw new TypeError(\"Class extends value \" + String(b) + \" is not a constructor or null\");\n\n  _extendStatics(d, b);\n\n  function __() {\n    this.constructor = d;\n  }\n\n  d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n}\n\nvar _assign = function __assign() {\n  _assign = Object.assign || function __assign(t) {\n    for (var s, i = 1, n = arguments.length; i < n; i++) {\n      s = arguments[i];\n\n      for (var p in s) {\n        if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];\n      }\n    }\n\n    return t;\n  };\n\n  return _assign.apply(this, arguments);\n};\n\nexport { _assign as __assign };\nexport function __rest(s, e) {\n  var t = {};\n\n  for (var p in s) {\n    if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0) t[p] = s[p];\n  }\n\n  if (s != null && typeof Object.getOwnPropertySymbols === \"function\") for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {\n    if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i])) t[p[i]] = s[p[i]];\n  }\n  return t;\n}\nexport function __decorate(decorators, target, key, desc) {\n  var c = arguments.length,\n      r = c < 3 ? 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op[1] : void 0,\n      done: true\n    };\n  }\n}\nexport var __createBinding = Object.create ? function (o, m, k, k2) {\n  if (k2 === undefined) k2 = k;\n  Object.defineProperty(o, k2, {\n    enumerable: true,\n    get: function get() {\n      return m[k];\n    }\n  });\n} : function (o, m, k, k2) {\n  if (k2 === undefined) k2 = k;\n  o[k2] = m[k];\n};\nexport function __exportStar(m, o) {\n  for (var p in m) {\n    if (p !== \"default\" && !Object.prototype.hasOwnProperty.call(o, p)) __createBinding(o, m, p);\n  }\n}\nexport function __values(o) {\n  var s = typeof Symbol === \"function\" && Symbol.iterator,\n      m = s && o[s],\n      i = 0;\n  if (m) return m.call(o);\n  if (o && typeof o.length === \"number\") return {\n    next: function next() {\n      if (o && i >= o.length) o = void 0;\n      return {\n        value: o && o[i++],\n        done: !o\n      };\n    }\n  };\n  throw new TypeError(s ? \"Object is not iterable.\" : \"Symbol.iterator is not defined.\");\n}\nexport function __read(o, n) {\n  var m = typeof Symbol === \"function\" && o[Symbol.iterator];\n  if (!m) return o;\n  var i = m.call(o),\n      r,\n      ar = [],\n      e;\n\n  try {\n    while ((n === void 0 || n-- > 0) && !(r = i.next()).done) {\n      ar.push(r.value);\n    }\n  } catch (error) {\n    e = {\n      error: error\n    };\n  } finally {\n    try {\n      if (r && !r.done && (m = i[\"return\"])) m.call(i);\n    } finally {\n      if (e) throw e.error;\n    }\n  }\n\n  return ar;\n}\n/** @deprecated */\n\nexport function __spread() {\n  for (var ar = [], i = 0; i < arguments.length; i++) {\n    ar = ar.concat(__read(arguments[i]));\n  }\n\n  return ar;\n}\n/** @deprecated */\n\nexport function __spreadArrays() {\n  for (var s = 0, i = 0, il = arguments.length; i < il; i++) {\n    s += arguments[i].length;\n  }\n\n  for (var r = Array(s), k = 0, i = 0; i < il; i++) {\n    for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++) {\n      r[k] = a[j];\n    }\n  }\n\n  return r;\n}\nexport function __spreadArray(to, from, pack) {\n  if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {\n    if (ar || !(i in from)) {\n      if (!ar) ar = Array.prototype.slice.call(from, 0, i);\n      ar[i] = from[i];\n    }\n  }\n  return to.concat(ar || Array.prototype.slice.call(from));\n}\nexport function __await(v) {\n  return this instanceof __await ? (this.v = v, this) : new __await(v);\n}\nexport function __asyncGenerator(thisArg, _arguments, generator) {\n  if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\n  var g = generator.apply(thisArg, _arguments || []),\n      i,\n      q = [];\n  return i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () {\n    return this;\n  }, i;\n\n  function verb(n) {\n    if (g[n]) i[n] = function (v) {\n      return new Promise(function (a, b) {\n        q.push([n, v, a, b]) > 1 || resume(n, v);\n      });\n    };\n  }\n\n  function resume(n, v) {\n    try {\n      step(g[n](v));\n    } catch (e) {\n      settle(q[0][3], e);\n    }\n  }\n\n  function step(r) {\n    r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r);\n  }\n\n  function fulfill(value) {\n    resume(\"next\", value);\n  }\n\n  function reject(value) {\n    resume(\"throw\", value);\n  }\n\n  function settle(f, v) {\n    if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]);\n  }\n}\nexport function __asyncDelegator(o) {\n  var i, p;\n  return i = {}, verb(\"next\"), verb(\"throw\", function (e) {\n    throw e;\n  }), verb(\"return\"), i[Symbol.iterator] = function () {\n    return this;\n  }, i;\n\n  function verb(n, f) {\n    i[n] = o[n] ? function (v) {\n      return (p = !p) ? {\n        value: __await(o[n](v)),\n        done: n === \"return\"\n      } : f ? f(v) : v;\n    } : f;\n  }\n}\nexport function __asyncValues(o) {\n  if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\n  var m = o[Symbol.asyncIterator],\n      i;\n  return m ? m.call(o) : (o = typeof __values === \"function\" ? __values(o) : o[Symbol.iterator](), i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () {\n    return this;\n  }, i);\n\n  function verb(n) {\n    i[n] = o[n] && function (v) {\n      return new Promise(function (resolve, reject) {\n        v = o[n](v), settle(resolve, reject, v.done, v.value);\n      });\n    };\n  }\n\n  function settle(resolve, reject, d, v) {\n    Promise.resolve(v).then(function (v) {\n      resolve({\n        value: v,\n        done: d\n      });\n    }, reject);\n  }\n}\nexport function __makeTemplateObject(cooked, raw) {\n  if (Object.defineProperty) {\n    Object.defineProperty(cooked, \"raw\", {\n      value: raw\n    });\n  } else {\n    cooked.raw = raw;\n  }\n\n  return cooked;\n}\n;\n\nvar __setModuleDefault = Object.create ? function (o, v) {\n  Object.defineProperty(o, \"default\", {\n    enumerable: true,\n    value: v\n  });\n} : function (o, v) {\n  o[\"default\"] = v;\n};\n\nexport function __importStar(mod) {\n  if (mod && mod.__esModule) return mod;\n  var result = {};\n  if (mod != null) for (var k in mod) {\n    if (k !== \"default\" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);\n  }\n\n  __setModuleDefault(result, mod);\n\n  return result;\n}\nexport function __importDefault(mod) {\n  return mod && mod.__esModule ? mod : {\n    default: mod\n  };\n}\nexport function __classPrivateFieldGet(receiver, state, kind, f) {\n  if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a getter\");\n  if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot read private member from an object whose class did not declare it\");\n  return kind === \"m\" ? f : kind === \"a\" ? f.call(receiver) : f ? f.value : state.get(receiver);\n}\nexport function __classPrivateFieldSet(receiver, state, value, kind, f) {\n  if (kind === \"m\") throw new TypeError(\"Private method is not writable\");\n  if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a setter\");\n  if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot write private member to an object whose class did not declare it\");\n  return kind === \"a\" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value), value;\n}","export var isArrayLike = function isArrayLike(x) {\n  return x && typeof x.length === 'number' && typeof x !== 'function';\n};","export function isFunction(value) {\n  return typeof value === 'function';\n}","import { createErrorClass } from './createErrorClass';\nexport var UnsubscriptionError = createErrorClass(function (_super) {\n  return function UnsubscriptionErrorImpl(errors) {\n    _super(this);\n\n    this.message = errors ? errors.length + \" errors occurred during unsubscription:\\n\" + errors.map(function (err, i) {\n      return i + 1 + \") \" + err.toString();\n    }).join('\\n  ') : '';\n    this.name = 'UnsubscriptionError';\n    this.errors = errors;\n  };\n});","export function createErrorClass(createImpl) {\n  var _super = function _super(instance) {\n    Error.call(instance);\n    instance.stack = new Error().stack;\n  };\n\n  var ctorFunc = createImpl(_super);\n  ctorFunc.prototype = Object.create(Error.prototype);\n  ctorFunc.prototype.constructor = ctorFunc;\n  return ctorFunc;\n}","export function arrRemove(arr, item) {\n  if (arr) {\n    var index = arr.indexOf(item);\n    0 <= index && arr.splice(index, 1);\n  }\n}","import { __read, __spreadArray, __values } from \"tslib\";\nimport { isFunction } from './util/isFunction';\nimport { UnsubscriptionError } from './util/UnsubscriptionError';\nimport { arrRemove } from './util/arrRemove';\n\nvar Subscription = function () {\n  function Subscription(initialTeardown) {\n    this.initialTeardown = initialTeardown;\n    this.closed = false;\n    this._parentage = null;\n    this._finalizers = null;\n  }\n\n  Subscription.prototype.unsubscribe = function () {\n    var e_1, _a, e_2, _b;\n\n    var errors;\n\n    if (!this.closed) {\n      this.closed = true;\n      var _parentage = this._parentage;\n\n      if (_parentage) {\n        this._parentage = null;\n\n        if (Array.isArray(_parentage)) {\n          try {\n            for (var _parentage_1 = __values(_parentage), _parentage_1_1 = _parentage_1.next(); !_parentage_1_1.done; _parentage_1_1 = _parentage_1.next()) {\n              var parent_1 = _parentage_1_1.value;\n              parent_1.remove(this);\n            }\n          } catch (e_1_1) {\n            e_1 = {\n              error: e_1_1\n            };\n          } finally {\n            try {\n              if (_parentage_1_1 && !_parentage_1_1.done && (_a = _parentage_1.return)) _a.call(_parentage_1);\n            } finally {\n              if (e_1) throw e_1.error;\n            }\n          }\n        } else {\n          _parentage.remove(this);\n        }\n      }\n\n      var initialFinalizer = this.initialTeardown;\n\n      if (isFunction(initialFinalizer)) {\n        try {\n          initialFinalizer();\n        } catch (e) {\n          errors = e instanceof UnsubscriptionError ? e.errors : [e];\n        }\n      }\n\n      var _finalizers = this._finalizers;\n\n      if (_finalizers) {\n        this._finalizers = null;\n\n        try {\n          for (var _finalizers_1 = __values(_finalizers), _finalizers_1_1 = _finalizers_1.next(); !_finalizers_1_1.done; _finalizers_1_1 = _finalizers_1.next()) {\n            var finalizer = _finalizers_1_1.value;\n\n            try {\n              execFinalizer(finalizer);\n            } catch (err) {\n              errors = errors !== null && errors !== void 0 ? errors : [];\n\n              if (err instanceof UnsubscriptionError) {\n                errors = __spreadArray(__spreadArray([], __read(errors)), __read(err.errors));\n              } else {\n                errors.push(err);\n              }\n            }\n          }\n        } catch (e_2_1) {\n          e_2 = {\n            error: e_2_1\n          };\n        } finally {\n          try {\n            if (_finalizers_1_1 && !_finalizers_1_1.done && (_b = _finalizers_1.return)) _b.call(_finalizers_1);\n          } finally {\n            if (e_2) throw e_2.error;\n          }\n        }\n      }\n\n      if (errors) {\n        throw new UnsubscriptionError(errors);\n      }\n    }\n  };\n\n  Subscription.prototype.add = function (teardown) {\n    var _a;\n\n    if (teardown && teardown !== this) {\n      if (this.closed) {\n        execFinalizer(teardown);\n      } else {\n        if (teardown instanceof Subscription) {\n          if (teardown.closed || teardown._hasParent(this)) {\n            return;\n          }\n\n          teardown._addParent(this);\n        }\n\n        (this._finalizers = (_a = this._finalizers) !== null && _a !== void 0 ? _a : []).push(teardown);\n      }\n    }\n  };\n\n  Subscription.prototype._hasParent = function (parent) {\n    var _parentage = this._parentage;\n    return _parentage === parent || Array.isArray(_parentage) && _parentage.includes(parent);\n  };\n\n  Subscription.prototype._addParent = function (parent) {\n    var _parentage = this._parentage;\n    this._parentage = Array.isArray(_parentage) ? (_parentage.push(parent), _parentage) : _parentage ? [_parentage, parent] : parent;\n  };\n\n  Subscription.prototype._removeParent = function (parent) {\n    var _parentage = this._parentage;\n\n    if (_parentage === parent) {\n      this._parentage = null;\n    } else if (Array.isArray(_parentage)) {\n      arrRemove(_parentage, parent);\n    }\n  };\n\n  Subscription.prototype.remove = function (teardown) {\n    var _finalizers = this._finalizers;\n    _finalizers && arrRemove(_finalizers, teardown);\n\n    if (teardown instanceof Subscription) {\n      teardown._removeParent(this);\n    }\n  };\n\n  Subscription.EMPTY = function () {\n    var empty = new Subscription();\n    empty.closed = true;\n    return empty;\n  }();\n\n  return Subscription;\n}();\n\nexport { Subscription };\nexport var EMPTY_SUBSCRIPTION = Subscription.EMPTY;\nexport function isSubscription(value) {\n  return value instanceof Subscription || value && 'closed' in value && isFunction(value.remove) && isFunction(value.add) && isFunction(value.unsubscribe);\n}\n\nfunction execFinalizer(finalizer) {\n  if (isFunction(finalizer)) {\n    finalizer();\n  } else {\n    finalizer.unsubscribe();\n  }\n}","export var config = {\n  onUnhandledError: null,\n  onStoppedNotification: null,\n  Promise: undefined,\n  useDeprecatedSynchronousErrorHandling: false,\n  useDeprecatedNextContext: false\n};","import { __read, __spreadArray } from \"tslib\";\nexport var timeoutProvider = {\n  setTimeout: function (_setTimeout) {\n    function setTimeout(_x, _x2) {\n      return _setTimeout.apply(this, arguments);\n    }\n\n    setTimeout.toString = function () {\n      return _setTimeout.toString();\n    };\n\n    return setTimeout;\n  }(function (handler, timeout) {\n    var args = [];\n\n    for (var _i = 2; _i < arguments.length; _i++) {\n      args[_i - 2] = arguments[_i];\n    }\n\n    var delegate = timeoutProvider.delegate;\n\n    if (delegate === null || delegate === void 0 ? void 0 : delegate.setTimeout) {\n      return delegate.setTimeout.apply(delegate, __spreadArray([handler, timeout], __read(args)));\n    }\n\n    return setTimeout.apply(void 0, __spreadArray([handler, timeout], __read(args)));\n  }),\n  clearTimeout: function (_clearTimeout) {\n    function clearTimeout(_x3) {\n      return _clearTimeout.apply(this, arguments);\n    }\n\n    clearTimeout.toString = function () {\n      return _clearTimeout.toString();\n    };\n\n    return clearTimeout;\n  }(function (handle) {\n    var delegate = timeoutProvider.delegate;\n    return ((delegate === null || delegate === void 0 ? void 0 : delegate.clearTimeout) || clearTimeout)(handle);\n  }),\n  delegate: undefined\n};","import { config } from '../config';\nimport { timeoutProvider } from '../scheduler/timeoutProvider';\nexport function reportUnhandledError(err) {\n  timeoutProvider.setTimeout(function () {\n    var onUnhandledError = config.onUnhandledError;\n\n    if (onUnhandledError) {\n      onUnhandledError(err);\n    } else {\n      throw err;\n    }\n  });\n}","export function noop() {}","export var COMPLETE_NOTIFICATION = function () {\n  return createNotification('C', undefined, undefined);\n}();\nexport function errorNotification(error) {\n  return createNotification('E', undefined, error);\n}\nexport function nextNotification(value) {\n  return createNotification('N', value, undefined);\n}\nexport function createNotification(kind, value, error) {\n  return {\n    kind: kind,\n    value: value,\n    error: error\n  };\n}","import { config } from '../config';\nvar context = null;\nexport function errorContext(cb) {\n  if (config.useDeprecatedSynchronousErrorHandling) {\n    var isRoot = !context;\n\n    if (isRoot) {\n      context = {\n        errorThrown: false,\n        error: null\n      };\n    }\n\n    cb();\n\n    if (isRoot) {\n      var _a = context,\n          errorThrown = _a.errorThrown,\n          error = _a.error;\n      context = null;\n\n      if (errorThrown) {\n        throw error;\n      }\n    }\n  } else {\n    cb();\n  }\n}\nexport function captureError(err) {\n  if (config.useDeprecatedSynchronousErrorHandling && context) {\n    context.errorThrown = true;\n    context.error = err;\n  }\n}","import { __extends } from \"tslib\";\nimport { isFunction } from './util/isFunction';\nimport { isSubscription, Subscription } from './Subscription';\nimport { config } from './config';\nimport { reportUnhandledError } from './util/reportUnhandledError';\nimport { noop } from './util/noop';\nimport { nextNotification, errorNotification, COMPLETE_NOTIFICATION } from './NotificationFactories';\nimport { timeoutProvider } from './scheduler/timeoutProvider';\nimport { captureError } from './util/errorContext';\n\nvar Subscriber = function (_super) {\n  __extends(Subscriber, _super);\n\n  function Subscriber(destination) {\n    var _this = _super.call(this) || this;\n\n    _this.isStopped = false;\n\n    if (destination) {\n      _this.destination = destination;\n\n      if (isSubscription(destination)) {\n        destination.add(_this);\n      }\n    } else {\n      _this.destination = EMPTY_OBSERVER;\n    }\n\n    return _this;\n  }\n\n  Subscriber.create = function (next, error, complete) {\n    return new SafeSubscriber(next, error, complete);\n  };\n\n  Subscriber.prototype.next = function (value) {\n    if (this.isStopped) {\n      handleStoppedNotification(nextNotification(value), this);\n    } else {\n      this._next(value);\n    }\n  };\n\n  Subscriber.prototype.error = function (err) {\n    if (this.isStopped) {\n      handleStoppedNotification(errorNotification(err), this);\n    } else {\n      this.isStopped = true;\n\n      this._error(err);\n    }\n  };\n\n  Subscriber.prototype.complete = function () {\n    if (this.isStopped) {\n      handleStoppedNotification(COMPLETE_NOTIFICATION, this);\n    } else {\n      this.isStopped = true;\n\n      this._complete();\n    }\n  };\n\n  Subscriber.prototype.unsubscribe = function () {\n    if (!this.closed) {\n      this.isStopped = true;\n\n      _super.prototype.unsubscribe.call(this);\n\n      this.destination = null;\n    }\n  };\n\n  Subscriber.prototype._next = function (value) {\n    this.destination.next(value);\n  };\n\n  Subscriber.prototype._error = function (err) {\n    try {\n      this.destination.error(err);\n    } finally {\n      this.unsubscribe();\n    }\n  };\n\n  Subscriber.prototype._complete = function () {\n    try {\n      this.destination.complete();\n    } finally {\n      this.unsubscribe();\n    }\n  };\n\n  return Subscriber;\n}(Subscription);\n\nexport { Subscriber };\nvar _bind = Function.prototype.bind;\n\nfunction bind(fn, thisArg) {\n  return _bind.call(fn, thisArg);\n}\n\nvar ConsumerObserver = function () {\n  function ConsumerObserver(partialObserver) {\n    this.partialObserver = partialObserver;\n  }\n\n  ConsumerObserver.prototype.next = function (value) {\n    var partialObserver = this.partialObserver;\n\n    if (partialObserver.next) {\n      try {\n        partialObserver.next(value);\n      } catch (error) {\n        handleUnhandledError(error);\n      }\n    }\n  };\n\n  ConsumerObserver.prototype.error = function (err) {\n    var partialObserver = this.partialObserver;\n\n    if (partialObserver.error) {\n      try {\n        partialObserver.error(err);\n      } catch (error) {\n        handleUnhandledError(error);\n      }\n    } else {\n      handleUnhandledError(err);\n    }\n  };\n\n  ConsumerObserver.prototype.complete = function () {\n    var partialObserver = this.partialObserver;\n\n    if (partialObserver.complete) {\n      try {\n        partialObserver.complete();\n      } catch (error) {\n        handleUnhandledError(error);\n      }\n    }\n  };\n\n  return ConsumerObserver;\n}();\n\nvar SafeSubscriber = function (_super) {\n  __extends(SafeSubscriber, _super);\n\n  function SafeSubscriber(observerOrNext, error, complete) {\n    var _this = _super.call(this) || this;\n\n    var partialObserver;\n\n    if (isFunction(observerOrNext) || !observerOrNext) {\n      partialObserver = {\n        next: observerOrNext !== null && observerOrNext !== void 0 ? observerOrNext : undefined,\n        error: error !== null && error !== void 0 ? error : undefined,\n        complete: complete !== null && complete !== void 0 ? complete : undefined\n      };\n    } else {\n      var context_1;\n\n      if (_this && config.useDeprecatedNextContext) {\n        context_1 = Object.create(observerOrNext);\n\n        context_1.unsubscribe = function () {\n          return _this.unsubscribe();\n        };\n\n        partialObserver = {\n          next: observerOrNext.next && bind(observerOrNext.next, context_1),\n          error: observerOrNext.error && bind(observerOrNext.error, context_1),\n          complete: observerOrNext.complete && bind(observerOrNext.complete, context_1)\n        };\n      } else {\n        partialObserver = observerOrNext;\n      }\n    }\n\n    _this.destination = new ConsumerObserver(partialObserver);\n    return _this;\n  }\n\n  return SafeSubscriber;\n}(Subscriber);\n\nexport { SafeSubscriber };\n\nfunction handleUnhandledError(error) {\n  if (config.useDeprecatedSynchronousErrorHandling) {\n    captureError(error);\n  } else {\n    reportUnhandledError(error);\n  }\n}\n\nfunction defaultErrorHandler(err) {\n  throw err;\n}\n\nfunction handleStoppedNotification(notification, subscriber) {\n  var onStoppedNotification = config.onStoppedNotification;\n  onStoppedNotification && timeoutProvider.setTimeout(function () {\n    return onStoppedNotification(notification, subscriber);\n  });\n}\n\nexport var EMPTY_OBSERVER = {\n  closed: true,\n  next: noop,\n  error: defaultErrorHandler,\n  complete: noop\n};","export var observable = function () {\n  return typeof Symbol === 'function' && Symbol.observable || '@@observable';\n}();","export function identity(x) {\n  return x;\n}","import { identity } from './identity';\nexport function pipe() {\n  var fns = [];\n\n  for (var _i = 0; _i < arguments.length; _i++) {\n    fns[_i] = arguments[_i];\n  }\n\n  return pipeFromArray(fns);\n}\nexport function pipeFromArray(fns) {\n  if (fns.length === 0) {\n    return identity;\n  }\n\n  if (fns.length === 1) {\n    return fns[0];\n  }\n\n  return function piped(input) {\n    return fns.reduce(function (prev, fn) {\n      return fn(prev);\n    }, input);\n  };\n}","import { SafeSubscriber, Subscriber } from './Subscriber';\nimport { isSubscription } from './Subscription';\nimport { observable as Symbol_observable } from './symbol/observable';\nimport { pipeFromArray } from './util/pipe';\nimport { config } from './config';\nimport { isFunction } from './util/isFunction';\nimport { errorContext } from './util/errorContext';\n\nvar Observable = function () {\n  function Observable(subscribe) {\n    if (subscribe) {\n      this._subscribe = subscribe;\n    }\n  }\n\n  Observable.prototype.lift = function (operator) {\n    var observable = new Observable();\n    observable.source = this;\n    observable.operator = operator;\n    return observable;\n  };\n\n  Observable.prototype.subscribe = function (observerOrNext, error, complete) {\n    var _this = this;\n\n    var subscriber = isSubscriber(observerOrNext) ? observerOrNext : new SafeSubscriber(observerOrNext, error, complete);\n    errorContext(function () {\n      var _a = _this,\n          operator = _a.operator,\n          source = _a.source;\n      subscriber.add(operator ? operator.call(subscriber, source) : source ? _this._subscribe(subscriber) : _this._trySubscribe(subscriber));\n    });\n    return subscriber;\n  };\n\n  Observable.prototype._trySubscribe = function (sink) {\n    try {\n      return this._subscribe(sink);\n    } catch (err) {\n      sink.error(err);\n    }\n  };\n\n  Observable.prototype.forEach = function (_next, promiseCtor) {\n    var _this = this;\n\n    promiseCtor = getPromiseCtor(promiseCtor);\n    return new promiseCtor(function (resolve, reject) {\n      var subscriber = new SafeSubscriber({\n        next: function next(value) {\n          try {\n            _next(value);\n          } catch (err) {\n            reject(err);\n            subscriber.unsubscribe();\n          }\n        },\n        error: reject,\n        complete: resolve\n      });\n\n      _this.subscribe(subscriber);\n    });\n  };\n\n  Observable.prototype._subscribe = function (subscriber) {\n    var _a;\n\n    return (_a = this.source) === null || _a === void 0 ? void 0 : _a.subscribe(subscriber);\n  };\n\n  Observable.prototype[Symbol_observable] = function () {\n    return this;\n  };\n\n  Observable.prototype.pipe = function () {\n    var operations = [];\n\n    for (var _i = 0; _i < arguments.length; _i++) {\n      operations[_i] = arguments[_i];\n    }\n\n    return pipeFromArray(operations)(this);\n  };\n\n  Observable.prototype.toPromise = function (promiseCtor) {\n    var _this = this;\n\n    promiseCtor = getPromiseCtor(promiseCtor);\n    return new promiseCtor(function (resolve, reject) {\n      var value;\n\n      _this.subscribe(function (x) {\n        return value = x;\n      }, function (err) {\n        return reject(err);\n      }, function () {\n        return resolve(value);\n      });\n    });\n  };\n\n  Observable.create = function (subscribe) {\n    return new Observable(subscribe);\n  };\n\n  return Observable;\n}();\n\nexport { Observable };\n\nfunction getPromiseCtor(promiseCtor) {\n  var _a;\n\n  return (_a = promiseCtor !== null && promiseCtor !== void 0 ? promiseCtor : config.Promise) !== null && _a !== void 0 ? _a : Promise;\n}\n\nfunction isObserver(value) {\n  return value && isFunction(value.next) && isFunction(value.error) && isFunction(value.complete);\n}\n\nfunction isSubscriber(value) {\n  return value && value instanceof Subscriber || isObserver(value) && isSubscription(value);\n}","export function getSymbolIterator() {\n  if (typeof Symbol !== 'function' || !Symbol.iterator) {\n    return '@@iterator';\n  }\n\n  return Symbol.iterator;\n}\nexport var iterator = getSymbolIterator();","import { __asyncValues, __awaiter, __generator, __values } from \"tslib\";\nimport { isArrayLike } from '../util/isArrayLike';\nimport { isPromise } from '../util/isPromise';\nimport { Observable } from '../Observable';\nimport { isInteropObservable } from '../util/isInteropObservable';\nimport { isAsyncIterable } from '../util/isAsyncIterable';\nimport { createInvalidObservableTypeError } from '../util/throwUnobservableError';\nimport { isIterable } from '../util/isIterable';\nimport { isReadableStreamLike, readableStreamLikeToAsyncGenerator } from '../util/isReadableStreamLike';\nimport { isFunction } from '../util/isFunction';\nimport { reportUnhandledError } from '../util/reportUnhandledError';\nimport { observable as Symbol_observable } from '../symbol/observable';\nexport function innerFrom(input) {\n  if (input instanceof Observable) {\n    return input;\n  }\n\n  if (input != null) {\n    if (isInteropObservable(input)) {\n      return fromInteropObservable(input);\n    }\n\n    if (isArrayLike(input)) {\n      return fromArrayLike(input);\n    }\n\n    if (isPromise(input)) {\n      return fromPromise(input);\n    }\n\n    if (isAsyncIterable(input)) {\n      return fromAsyncIterable(input);\n    }\n\n    if (isIterable(input)) {\n      return fromIterable(input);\n    }\n\n    if (isReadableStreamLike(input)) {\n      return fromReadableStreamLike(input);\n    }\n  }\n\n  throw createInvalidObservableTypeError(input);\n}\nexport function fromInteropObservable(obj) {\n  return new Observable(function (subscriber) {\n    var obs = obj[Symbol_observable]();\n\n    if (isFunction(obs.subscribe)) {\n      return obs.subscribe(subscriber);\n    }\n\n    throw new TypeError('Provided object does not correctly implement Symbol.observable');\n  });\n}\nexport function fromArrayLike(array) {\n  return new Observable(function (subscriber) {\n    for (var i = 0; i < array.length && !subscriber.closed; i++) {\n      subscriber.next(array[i]);\n    }\n\n    subscriber.complete();\n  });\n}\nexport function fromPromise(promise) {\n  return new Observable(function (subscriber) {\n    promise.then(function (value) {\n      if (!subscriber.closed) {\n        subscriber.next(value);\n        subscriber.complete();\n      }\n    }, function (err) {\n      return subscriber.error(err);\n    }).then(null, reportUnhandledError);\n  });\n}\nexport function fromIterable(iterable) {\n  return new Observable(function (subscriber) {\n    var e_1, _a;\n\n    try {\n      for (var iterable_1 = __values(iterable), iterable_1_1 = iterable_1.next(); !iterable_1_1.done; iterable_1_1 = iterable_1.next()) {\n        var value = iterable_1_1.value;\n        subscriber.next(value);\n\n        if (subscriber.closed) {\n          return;\n        }\n      }\n    } catch (e_1_1) {\n      e_1 = {\n        error: e_1_1\n      };\n    } finally {\n      try {\n        if (iterable_1_1 && !iterable_1_1.done && (_a = iterable_1.return)) _a.call(iterable_1);\n      } finally {\n        if (e_1) throw e_1.error;\n      }\n    }\n\n    subscriber.complete();\n  });\n}\nexport function fromAsyncIterable(asyncIterable) {\n  return new Observable(function (subscriber) {\n    process(asyncIterable, subscriber).catch(function (err) {\n      return subscriber.error(err);\n    });\n  });\n}\nexport function fromReadableStreamLike(readableStream) {\n  return fromAsyncIterable(readableStreamLikeToAsyncGenerator(readableStream));\n}\n\nfunction process(asyncIterable, subscriber) {\n  var asyncIterable_1, asyncIterable_1_1;\n\n  var e_2, _a;\n\n  return __awaiter(this, void 0, void 0, function () {\n    var value, e_2_1;\n    return __generator(this, function (_b) {\n      switch (_b.label) {\n        case 0:\n          _b.trys.push([0, 5, 6, 11]);\n\n          asyncIterable_1 = __asyncValues(asyncIterable);\n          _b.label = 1;\n\n        case 1:\n          return [4, asyncIterable_1.next()];\n\n        case 2:\n          if (!(asyncIterable_1_1 = _b.sent(), !asyncIterable_1_1.done)) return [3, 4];\n          value = asyncIterable_1_1.value;\n          subscriber.next(value);\n\n          if (subscriber.closed) {\n            return [2];\n          }\n\n          _b.label = 3;\n\n        case 3:\n          return [3, 1];\n\n        case 4:\n          return [3, 11];\n\n        case 5:\n          e_2_1 = _b.sent();\n          e_2 = {\n            error: e_2_1\n          };\n          return [3, 11];\n\n        case 6:\n          _b.trys.push([6,, 9, 10]);\n\n          if (!(asyncIterable_1_1 && !asyncIterable_1_1.done && (_a = asyncIterable_1.return))) return [3, 8];\n          return [4, _a.call(asyncIterable_1)];\n\n        case 7:\n          _b.sent();\n\n          _b.label = 8;\n\n        case 8:\n          return [3, 10];\n\n        case 9:\n          if (e_2) throw e_2.error;\n          return [7];\n\n        case 10:\n          return [7];\n\n        case 11:\n          subscriber.complete();\n          return [2];\n      }\n    });\n  });\n}","import { observable as Symbol_observable } from '../symbol/observable';\nimport { isFunction } from './isFunction';\nexport function isInteropObservable(input) {\n  return isFunction(input[Symbol_observable]);\n}","import { isFunction } from \"./isFunction\";\nexport function isPromise(value) {\n  return isFunction(value === null || value === void 0 ? void 0 : value.then);\n}","import { isFunction } from './isFunction';\nexport function isAsyncIterable(obj) {\n  return Symbol.asyncIterator && isFunction(obj === null || obj === void 0 ? void 0 : obj[Symbol.asyncIterator]);\n}","import { iterator as Symbol_iterator } from '../symbol/iterator';\nimport { isFunction } from './isFunction';\nexport function isIterable(input) {\n  return isFunction(input === null || input === void 0 ? void 0 : input[Symbol_iterator]);\n}","import { __asyncGenerator, __await, __generator } from \"tslib\";\nimport { isFunction } from './isFunction';\nexport function readableStreamLikeToAsyncGenerator(readableStream) {\n  return __asyncGenerator(this, arguments, function readableStreamLikeToAsyncGenerator_1() {\n    var reader, _a, value, done;\n\n    return __generator(this, function (_b) {\n      switch (_b.label) {\n        case 0:\n          reader = readableStream.getReader();\n          _b.label = 1;\n\n        case 1:\n          _b.trys.push([1,, 9, 10]);\n\n          _b.label = 2;\n\n        case 2:\n          if (!true) return [3, 8];\n          return [4, __await(reader.read())];\n\n        case 3:\n          _a = _b.sent(), value = _a.value, done = _a.done;\n          if (!done) return [3, 5];\n          return [4, __await(void 0)];\n\n        case 4:\n          return [2, _b.sent()];\n\n        case 5:\n          return [4, __await(value)];\n\n        case 6:\n          return [4, _b.sent()];\n\n        case 7:\n          _b.sent();\n\n          return [3, 2];\n\n        case 8:\n          return [3, 10];\n\n        case 9:\n          reader.releaseLock();\n          return [7];\n\n        case 10:\n          return [2];\n      }\n    });\n  });\n}\nexport function isReadableStreamLike(obj) {\n  return isFunction(obj === null || obj === void 0 ? void 0 : obj.getReader);\n}","export function createInvalidObservableTypeError(input) {\n  return new TypeError(\"You provided \" + (input !== null && typeof input === 'object' ? 'an invalid object' : \"'\" + input + \"'\") + \" where a stream was expected. You can provide an Observable, Promise, ReadableStream, Array, AsyncIterable, or Iterable.\");\n}","import { isFunction } from './isFunction';\nexport function hasLift(source) {\n  return isFunction(source === null || source === void 0 ? void 0 : source.lift);\n}\nexport function operate(init) {\n  return function (source) {\n    if (hasLift(source)) {\n      return source.lift(function (liftedSource) {\n        try {\n          return init(liftedSource, this);\n        } catch (err) {\n          this.error(err);\n        }\n      });\n    }\n\n    throw new TypeError('Unable to lift unknown Observable type');\n  };\n}","import { __extends } from \"tslib\";\nimport { Subscriber } from '../Subscriber';\nexport function createOperatorSubscriber(destination, onNext, onComplete, onError, onFinalize) {\n  return new OperatorSubscriber(destination, onNext, onComplete, onError, onFinalize);\n}\n\nvar OperatorSubscriber = function (_super) {\n  __extends(OperatorSubscriber, _super);\n\n  function OperatorSubscriber(destination, onNext, onComplete, onError, onFinalize, shouldUnsubscribe) {\n    var _this = _super.call(this, destination) || this;\n\n    _this.onFinalize = onFinalize;\n    _this.shouldUnsubscribe = shouldUnsubscribe;\n    _this._next = onNext ? function (value) {\n      try {\n        onNext(value);\n      } catch (err) {\n        destination.error(err);\n      }\n    } : _super.prototype._next;\n    _this._error = onError ? function (err) {\n      try {\n        onError(err);\n      } catch (err) {\n        destination.error(err);\n      } finally {\n        this.unsubscribe();\n      }\n    } : _super.prototype._error;\n    _this._complete = onComplete ? function () {\n      try {\n        onComplete();\n      } catch (err) {\n        destination.error(err);\n      } finally {\n        this.unsubscribe();\n      }\n    } : _super.prototype._complete;\n    return _this;\n  }\n\n  OperatorSubscriber.prototype.unsubscribe = function () {\n    var _a;\n\n    if (!this.shouldUnsubscribe || this.shouldUnsubscribe()) {\n      var closed_1 = this.closed;\n\n      _super.prototype.unsubscribe.call(this);\n\n      !closed_1 && ((_a = this.onFinalize) === null || _a === void 0 ? void 0 : _a.call(this));\n    }\n  };\n\n  return OperatorSubscriber;\n}(Subscriber);\n\nexport { OperatorSubscriber };","import { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nexport function map(project, thisArg) {\n  return operate(function (source, subscriber) {\n    var index = 0;\n    source.subscribe(createOperatorSubscriber(subscriber, function (value) {\n      subscriber.next(project.call(thisArg, value, index++));\n    }));\n  });\n}","import { map } from './map';\nimport { innerFrom } from '../observable/innerFrom';\nimport { operate } from '../util/lift';\nimport { mergeInternals } from './mergeInternals';\nimport { isFunction } from '../util/isFunction';\nexport function mergeMap(project, resultSelector, concurrent) {\n  if (concurrent === void 0) {\n    concurrent = Infinity;\n  }\n\n  if (isFunction(resultSelector)) {\n    return mergeMap(function (a, i) {\n      return map(function (b, ii) {\n        return resultSelector(a, b, i, ii);\n      })(innerFrom(project(a, i)));\n    }, concurrent);\n  } else if (typeof resultSelector === 'number') {\n    concurrent = resultSelector;\n  }\n\n  return operate(function (source, subscriber) {\n    return mergeInternals(source, subscriber, project, concurrent);\n  });\n}","import { innerFrom } from '../observable/innerFrom';\nimport { executeSchedule } from '../util/executeSchedule';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nexport function mergeInternals(source, subscriber, project, concurrent, onBeforeNext, expand, innerSubScheduler, additionalFinalizer) {\n  var buffer = [];\n  var active = 0;\n  var index = 0;\n  var isComplete = false;\n\n  var checkComplete = function checkComplete() {\n    if (isComplete && !buffer.length && !active) {\n      subscriber.complete();\n    }\n  };\n\n  var outerNext = function outerNext(value) {\n    return active < concurrent ? doInnerSub(value) : buffer.push(value);\n  };\n\n  var doInnerSub = function doInnerSub(value) {\n    expand && subscriber.next(value);\n    active++;\n    var innerComplete = false;\n    innerFrom(project(value, index++)).subscribe(createOperatorSubscriber(subscriber, function (innerValue) {\n      onBeforeNext === null || onBeforeNext === void 0 ? void 0 : onBeforeNext(innerValue);\n\n      if (expand) {\n        outerNext(innerValue);\n      } else {\n        subscriber.next(innerValue);\n      }\n    }, function () {\n      innerComplete = true;\n    }, undefined, function () {\n      if (innerComplete) {\n        try {\n          active--;\n\n          var _loop_1 = function _loop_1() {\n            var bufferedValue = buffer.shift();\n\n            if (innerSubScheduler) {\n              executeSchedule(subscriber, innerSubScheduler, function () {\n                return doInnerSub(bufferedValue);\n              });\n            } else {\n              doInnerSub(bufferedValue);\n            }\n          };\n\n          while (buffer.length && active < concurrent) {\n            _loop_1();\n          }\n\n          checkComplete();\n        } catch (err) {\n          subscriber.error(err);\n        }\n      }\n    }));\n  };\n\n  source.subscribe(createOperatorSubscriber(subscriber, outerNext, function () {\n    isComplete = true;\n    checkComplete();\n  }));\n  return function () {\n    additionalFinalizer === null || additionalFinalizer === void 0 ? void 0 : additionalFinalizer();\n  };\n}","export function executeSchedule(parentSubscription, scheduler, work, delay, repeat) {\n  if (delay === void 0) {\n    delay = 0;\n  }\n\n  if (repeat === void 0) {\n    repeat = false;\n  }\n\n  var scheduleSubscription = scheduler.schedule(function () {\n    work();\n\n    if (repeat) {\n      parentSubscription.add(this.schedule(null, delay));\n    } else {\n      this.unsubscribe();\n    }\n  }, delay);\n  parentSubscription.add(scheduleSubscription);\n\n  if (!repeat) {\n    return scheduleSubscription;\n  }\n}","import { __read, __spreadArray } from \"tslib\";\nimport { map } from \"../operators/map\";\nvar isArray = Array.isArray;\n\nfunction callOrApply(fn, args) {\n  return isArray(args) ? fn.apply(void 0, __spreadArray([], __read(args))) : fn(args);\n}\n\nexport function mapOneOrManyArgs(fn) {\n  return map(function (args) {\n    return callOrApply(fn, args);\n  });\n}","import { __read } from \"tslib\";\nimport { innerFrom } from '../observable/innerFrom';\nimport { Observable } from '../Observable';\nimport { mergeMap } from '../operators/mergeMap';\nimport { isArrayLike } from '../util/isArrayLike';\nimport { isFunction } from '../util/isFunction';\nimport { mapOneOrManyArgs } from '../util/mapOneOrManyArgs';\nvar nodeEventEmitterMethods = ['addListener', 'removeListener'];\nvar eventTargetMethods = ['addEventListener', 'removeEventListener'];\nvar jqueryMethods = ['on', 'off'];\nexport function fromEvent(target, eventName, options, resultSelector) {\n  if (isFunction(options)) {\n    resultSelector = options;\n    options = undefined;\n  }\n\n  if (resultSelector) {\n    return fromEvent(target, eventName, options).pipe(mapOneOrManyArgs(resultSelector));\n  }\n\n  var _a = __read(isEventTarget(target) ? eventTargetMethods.map(function (methodName) {\n    return function (handler) {\n      return target[methodName](eventName, handler, options);\n    };\n  }) : isNodeStyleEventEmitter(target) ? nodeEventEmitterMethods.map(toCommonHandlerRegistry(target, eventName)) : isJQueryStyleEventEmitter(target) ? jqueryMethods.map(toCommonHandlerRegistry(target, eventName)) : [], 2),\n      add = _a[0],\n      remove = _a[1];\n\n  if (!add) {\n    if (isArrayLike(target)) {\n      return mergeMap(function (subTarget) {\n        return fromEvent(subTarget, eventName, options);\n      })(innerFrom(target));\n    }\n  }\n\n  if (!add) {\n    throw new TypeError('Invalid event target');\n  }\n\n  return new Observable(function (subscriber) {\n    var handler = function handler() {\n      var args = [];\n\n      for (var _i = 0; _i < arguments.length; _i++) {\n        args[_i] = arguments[_i];\n      }\n\n      return subscriber.next(1 < args.length ? args : args[0]);\n    };\n\n    add(handler);\n    return function () {\n      return remove(handler);\n    };\n  });\n}\n\nfunction toCommonHandlerRegistry(target, eventName) {\n  return function (methodName) {\n    return function (handler) {\n      return target[methodName](eventName, handler);\n    };\n  };\n}\n\nfunction isNodeStyleEventEmitter(target) {\n  return isFunction(target.addListener) && isFunction(target.removeListener);\n}\n\nfunction isJQueryStyleEventEmitter(target) {\n  return isFunction(target.on) && isFunction(target.off);\n}\n\nfunction isEventTarget(target) {\n  return isFunction(target.addEventListener) && isFunction(target.removeEventListener);\n}","import { __extends } from \"tslib\";\nimport { Subscription } from '../Subscription';\n\nvar Action = function (_super) {\n  __extends(Action, _super);\n\n  function Action(scheduler, work) {\n    return _super.call(this) || this;\n  }\n\n  Action.prototype.schedule = function (state, delay) {\n    if (delay === void 0) {\n      delay = 0;\n    }\n\n    return this;\n  };\n\n  return Action;\n}(Subscription);\n\nexport { Action };","import { __read, __spreadArray } from \"tslib\";\nexport var intervalProvider = {\n  setInterval: function (_setInterval) {\n    function setInterval(_x, _x2) {\n      return _setInterval.apply(this, arguments);\n    }\n\n    setInterval.toString = function () {\n      return _setInterval.toString();\n    };\n\n    return setInterval;\n  }(function (handler, timeout) {\n    var args = [];\n\n    for (var _i = 2; _i < arguments.length; _i++) {\n      args[_i - 2] = arguments[_i];\n    }\n\n    var delegate = intervalProvider.delegate;\n\n    if (delegate === null || delegate === void 0 ? void 0 : delegate.setInterval) {\n      return delegate.setInterval.apply(delegate, __spreadArray([handler, timeout], __read(args)));\n    }\n\n    return setInterval.apply(void 0, __spreadArray([handler, timeout], __read(args)));\n  }),\n  clearInterval: function (_clearInterval) {\n    function clearInterval(_x3) {\n      return _clearInterval.apply(this, arguments);\n    }\n\n    clearInterval.toString = function () {\n      return _clearInterval.toString();\n    };\n\n    return clearInterval;\n  }(function (handle) {\n    var delegate = intervalProvider.delegate;\n    return ((delegate === null || delegate === void 0 ? void 0 : delegate.clearInterval) || clearInterval)(handle);\n  }),\n  delegate: undefined\n};","import { __extends } from \"tslib\";\nimport { Action } from './Action';\nimport { intervalProvider } from './intervalProvider';\nimport { arrRemove } from '../util/arrRemove';\n\nvar AsyncAction = function (_super) {\n  __extends(AsyncAction, _super);\n\n  function AsyncAction(scheduler, work) {\n    var _this = _super.call(this, scheduler, work) || this;\n\n    _this.scheduler = scheduler;\n    _this.work = work;\n    _this.pending = false;\n    return _this;\n  }\n\n  AsyncAction.prototype.schedule = function (state, delay) {\n    if (delay === void 0) {\n      delay = 0;\n    }\n\n    if (this.closed) {\n      return this;\n    }\n\n    this.state = state;\n    var id = this.id;\n    var scheduler = this.scheduler;\n\n    if (id != null) {\n      this.id = this.recycleAsyncId(scheduler, id, delay);\n    }\n\n    this.pending = true;\n    this.delay = delay;\n    this.id = this.id || this.requestAsyncId(scheduler, this.id, delay);\n    return this;\n  };\n\n  AsyncAction.prototype.requestAsyncId = function (scheduler, _id, delay) {\n    if (delay === void 0) {\n      delay = 0;\n    }\n\n    return intervalProvider.setInterval(scheduler.flush.bind(scheduler, this), delay);\n  };\n\n  AsyncAction.prototype.recycleAsyncId = function (_scheduler, id, delay) {\n    if (delay === void 0) {\n      delay = 0;\n    }\n\n    if (delay != null && this.delay === delay && this.pending === false) {\n      return id;\n    }\n\n    intervalProvider.clearInterval(id);\n    return undefined;\n  };\n\n  AsyncAction.prototype.execute = function (state, delay) {\n    if (this.closed) {\n      return new Error('executing a cancelled action');\n    }\n\n    this.pending = false;\n\n    var error = this._execute(state, delay);\n\n    if (error) {\n      return error;\n    } else if (this.pending === false && this.id != null) {\n      this.id = this.recycleAsyncId(this.scheduler, this.id, null);\n    }\n  };\n\n  AsyncAction.prototype._execute = function (state, _delay) {\n    var errored = false;\n    var errorValue;\n\n    try {\n      this.work(state);\n    } catch (e) {\n      errored = true;\n      errorValue = e ? e : new Error('Scheduled action threw falsy error');\n    }\n\n    if (errored) {\n      this.unsubscribe();\n      return errorValue;\n    }\n  };\n\n  AsyncAction.prototype.unsubscribe = function () {\n    if (!this.closed) {\n      var _a = this,\n          id = _a.id,\n          scheduler = _a.scheduler;\n\n      var actions = scheduler.actions;\n      this.work = this.state = this.scheduler = null;\n      this.pending = false;\n      arrRemove(actions, this);\n\n      if (id != null) {\n        this.id = this.recycleAsyncId(scheduler, id, null);\n      }\n\n      this.delay = null;\n\n      _super.prototype.unsubscribe.call(this);\n    }\n  };\n\n  return AsyncAction;\n}(Action);\n\nexport { AsyncAction };","export var dateTimestampProvider = {\n  now: function now() {\n    return (dateTimestampProvider.delegate || Date).now();\n  },\n  delegate: undefined\n};","import { dateTimestampProvider } from './scheduler/dateTimestampProvider';\n\nvar Scheduler = function () {\n  function Scheduler(schedulerActionCtor, now) {\n    if (now === void 0) {\n      now = Scheduler.now;\n    }\n\n    this.schedulerActionCtor = schedulerActionCtor;\n    this.now = now;\n  }\n\n  Scheduler.prototype.schedule = function (work, delay, state) {\n    if (delay === void 0) {\n      delay = 0;\n    }\n\n    return new this.schedulerActionCtor(this, work).schedule(state, delay);\n  };\n\n  Scheduler.now = dateTimestampProvider.now;\n  return Scheduler;\n}();\n\nexport { Scheduler };","import { AsyncAction } from './AsyncAction';\nimport { AsyncScheduler } from './AsyncScheduler';\nexport var asyncScheduler = new AsyncScheduler(AsyncAction);\nexport var async = asyncScheduler;","import { __extends } from \"tslib\";\nimport { Scheduler } from '../Scheduler';\n\nvar AsyncScheduler = function (_super) {\n  __extends(AsyncScheduler, _super);\n\n  function AsyncScheduler(SchedulerAction, now) {\n    if (now === void 0) {\n      now = Scheduler.now;\n    }\n\n    var _this = _super.call(this, SchedulerAction, now) || this;\n\n    _this.actions = [];\n    _this._active = false;\n    _this._scheduled = undefined;\n    return _this;\n  }\n\n  AsyncScheduler.prototype.flush = function (action) {\n    var actions = this.actions;\n\n    if (this._active) {\n      actions.push(action);\n      return;\n    }\n\n    var error;\n    this._active = true;\n\n    do {\n      if (error = action.execute(action.state, action.delay)) {\n        break;\n      }\n    } while (action = actions.shift());\n\n    this._active = false;\n\n    if (error) {\n      while (action = actions.shift()) {\n        action.unsubscribe();\n      }\n\n      throw error;\n    }\n  };\n\n  return AsyncScheduler;\n}(Scheduler);\n\nexport { AsyncScheduler };","import { operate } from '../util/lift';\nimport { createOperatorSubscriber } from './OperatorSubscriber';\nimport { innerFrom } from '../observable/innerFrom';\nexport var defaultThrottleConfig = {\n  leading: true,\n  trailing: false\n};\nexport function throttle(durationSelector, config) {\n  if (config === void 0) {\n    config = defaultThrottleConfig;\n  }\n\n  return operate(function (source, subscriber) {\n    var leading = config.leading,\n        trailing = config.trailing;\n    var hasValue = false;\n    var sendValue = null;\n    var throttled = null;\n    var isComplete = false;\n\n    var endThrottling = function endThrottling() {\n      throttled === null || throttled === void 0 ? void 0 : throttled.unsubscribe();\n      throttled = null;\n\n      if (trailing) {\n        send();\n        isComplete && subscriber.complete();\n      }\n    };\n\n    var cleanupThrottling = function cleanupThrottling() {\n      throttled = null;\n      isComplete && subscriber.complete();\n    };\n\n    var startThrottle = function startThrottle(value) {\n      return throttled = innerFrom(durationSelector(value)).subscribe(createOperatorSubscriber(subscriber, endThrottling, cleanupThrottling));\n    };\n\n    var send = function send() {\n      if (hasValue) {\n        hasValue = false;\n        var value = sendValue;\n        sendValue = null;\n        subscriber.next(value);\n        !isComplete && startThrottle(value);\n      }\n    };\n\n    source.subscribe(createOperatorSubscriber(subscriber, function (value) {\n      hasValue = true;\n      sendValue = value;\n      !(throttled && !throttled.closed) && (leading ? send() : startThrottle(value));\n    }, function () {\n      isComplete = true;\n      !(trailing && hasValue && throttled && !throttled.closed) && subscriber.complete();\n    }));\n  });\n}","import { Observable } from '../Observable';\nimport { async as asyncScheduler } from '../scheduler/async';\nimport { isScheduler } from '../util/isScheduler';\nimport { isValidDate } from '../util/isDate';\nexport function timer(dueTime, intervalOrScheduler, scheduler) {\n  if (dueTime === void 0) {\n    dueTime = 0;\n  }\n\n  if (scheduler === void 0) {\n    scheduler = asyncScheduler;\n  }\n\n  var intervalDuration = -1;\n\n  if (intervalOrScheduler != null) {\n    if (isScheduler(intervalOrScheduler)) {\n      scheduler = intervalOrScheduler;\n    } else {\n      intervalDuration = intervalOrScheduler;\n    }\n  }\n\n  return new Observable(function (subscriber) {\n    var due = isValidDate(dueTime) ? +dueTime - scheduler.now() : dueTime;\n\n    if (due < 0) {\n      due = 0;\n    }\n\n    var n = 0;\n    return scheduler.schedule(function () {\n      if (!subscriber.closed) {\n        subscriber.next(n++);\n\n        if (0 <= intervalDuration) {\n          this.schedule(undefined, intervalDuration);\n        } else {\n          subscriber.complete();\n        }\n      }\n    }, due);\n  });\n}","import { isFunction } from './isFunction';\nexport function isScheduler(value) {\n  return value && isFunction(value.schedule);\n}","export function isValidDate(value) {\n  return value instanceof Date && !isNaN(value);\n}","import { asyncScheduler } from '../scheduler/async';\nimport { defaultThrottleConfig, throttle } from './throttle';\nimport { timer } from '../observable/timer';\nexport function throttleTime(duration, scheduler, config) {\n  if (scheduler === void 0) {\n    scheduler = asyncScheduler;\n  }\n\n  if (config === void 0) {\n    config = defaultThrottleConfig;\n  }\n\n  var duration$ = timer(duration, scheduler);\n  return throttle(function () {\n    return duration$;\n  }, config);\n}","import classnames from 'classnames';\r\nimport _ from 'lodash';\r\nimport React, { useState, useEffect } from 'react';\r\nimport { fromEvent } from 'rxjs';\r\nimport { throttleTime } from 'rxjs/operators';\r\n\r\nimport { useSiteMetadata } from '../../utils/hooks';\r\n\r\nimport * as styles from './toc.module.less';\r\n\r\nconst TOCItem = (props) => {\r\n  const {\r\n    data: {\r\n      items,\r\n      title,\r\n      url,\r\n    },\r\n    activeUrls,\r\n    setActiveTOC,\r\n    depth,\r\n  } = props;\r\n  const { tocMaxDepth } = useSiteMetadata();\r\n  const classNames = [];\r\n  let childActiveUrls = [];\r\n  if (activeUrls.length > 0 && activeUrls[0] === url) {\r\n    classNames.push(styles.tocActive);\r\n    if (activeUrls.length === 1) {\r\n      classNames.push(styles.tocCurrent);\r\n    } else {\r\n      childActiveUrls = activeUrls.slice(1);\r\n    }\r\n  }\r\n  const handleClick = () => {\r\n    setActiveTOC(url);\r\n  };\r\n  return (\r\n    <>\r\n      <li key={url} title={title}>\r\n        <a\r\n          style={{ paddingLeft: `${depth + 1}em` }}\r\n          href={url}\r\n          className={classnames(classNames)}\r\n          onClick={handleClick}\r\n        >\r\n          {title}\r\n        </a>\r\n      </li>\r\n      {items && depth < tocMaxDepth ? items.map((item) => (\r\n        <TOCItem\r\n          key={item.url}\r\n          data={item}\r\n          activeUrls={childActiveUrls}\r\n          setActiveTOC={setActiveTOC}\r\n          depth={depth + 1}\r\n        />\r\n      )) : null}\r\n    </>\r\n  );\r\n};\r\n\r\nconst TableOfContents = (props) => {\r\n  const { tableOfContents, mainSidebar } = props;\r\n  const items = tableOfContents.items || [];\r\n  const mainSidebarHeight = mainSidebar ? mainSidebar.current.clientHeight : 0;\r\n\r\n  const calculateOffsets = () => {\r\n    // eslint-disable-next-line no-underscore-dangle\r\n    const _offsets = [];\r\n    const preorderTraversal = (root, parent) => {\r\n      if (root.url) {\r\n        const element = window.document.getElementById(root.url.substring(1));\r\n        if (element) {\r\n          const id = _offsets.length;\r\n          _offsets.push({\r\n            parent,\r\n            offset: element.offsetTop,\r\n            url: root.url,\r\n          });\r\n          if (root.items) {\r\n            root.items.forEach((item) => preorderTraversal(item, id));\r\n          }\r\n        }\r\n      }\r\n    };\r\n    items.forEach((item) => preorderTraversal(item, -1));\r\n    // console.log(_offsets);\r\n    return _offsets;\r\n    // return _.sortBy(_offsets, (value) => value.offset);\r\n  };\r\n\r\n  const [offsets, setOffsets] = useState(calculateOffsets);\r\n\r\n  const getActiveUrls = (position) => {\r\n    // const position = window.pageYOffset; // + window.innerHeight * 0.2;\r\n    // console.log(position);\r\n    let index = _.sortedIndexBy(offsets, { offset: position }, (value) => value.offset);\r\n    if (index > 0) {\r\n      --index;\r\n    }\r\n    const urls = [];\r\n    while (index >= 0 && index < offsets.length) {\r\n      // console.log(index, offsets[index]);\r\n      urls.unshift(offsets[index].url);\r\n      index = offsets[index].parent;\r\n    }\r\n    return urls;\r\n  };\r\n\r\n  const [activeTOC, setActiveTOC] = useState({\r\n    urls: getActiveUrls(window.pageYOffset),\r\n    clickTime: 0,\r\n  });\r\n\r\n  const setActiveTOCByClick = (url) => {\r\n    const currentOffset = window.pageYOffset;\r\n    const newOffset = window.document.getElementById(url.substring(1)).offsetTop;\r\n    const diff = Math.abs(currentOffset - newOffset) || 0;\r\n    const time = Date.now() + 500 + diff / 5;\r\n    const activeUrls = getActiveUrls(newOffset + 1);\r\n    setActiveTOC({\r\n      urls: activeUrls,\r\n      clickTime: time,\r\n    });\r\n  };\r\n\r\n  const calculateHeight = () => Math.max(200, window.innerHeight - mainSidebarHeight - 175);\r\n  const [height, setHeight] = useState(calculateHeight());\r\n\r\n  useEffect(() => {\r\n    const handleScroll = () => {\r\n      if (Date.now() > activeTOC.clickTime) {\r\n        const activeUrls = getActiveUrls(window.pageYOffset);\r\n        setActiveTOC({\r\n          urls: activeUrls,\r\n          clickTime: activeTOC.clickTime,\r\n        });\r\n      }\r\n    };\r\n\r\n    const events = fromEvent(window.document, 'scroll');\r\n    const event = events.pipe(throttleTime(300));\r\n    const subscription = event.subscribe(handleScroll);\r\n\r\n    return () => {\r\n      subscription.unsubscribe();\r\n    };\r\n  }, [activeTOC]);\r\n\r\n  useEffect(() => {\r\n    const handleResize = () => {\r\n      setHeight(calculateHeight());\r\n      setOffsets(calculateOffsets());\r\n    };\r\n\r\n    const events = fromEvent(window, 'resize');\r\n    const event = events.pipe(throttleTime(300));\r\n    const subscription = event.subscribe(handleResize);\r\n\r\n    return () => {\r\n      subscription.unsubscribe();\r\n    };\r\n  }, [offsets, height]);\r\n\r\n  // console.log(activeTOC.urls);\r\n\r\n  return (\r\n    <div className={styles.tocContainer} style={{ height }}>\r\n      <h3>Table of Contents</h3>\r\n      <ul className={styles.toc}>\r\n        {items.map((item) => (\r\n          <TOCItem\r\n            key={item.url}\r\n            data={item}\r\n            activeUrls={activeTOC.urls}\r\n            setActiveTOC={setActiveTOCByClick}\r\n            depth={0}\r\n          />\r\n        ))}\r\n      </ul>\r\n    </div>\r\n  );\r\n};\r\n\r\nexport default TableOfContents;\r\n","// extracted by mini-css-extract-plugin\nexport var antAffix = \"toc-module--ant-affix--kX-G6\";\nexport var antRowRtl = \"toc-module--ant-row-rtl--dxXmS\";\nexport var rsBadgeBlue = \"toc-module--rs-badge-blue--Req1G\";\nexport var rsBadgeContent = \"toc-module--rs-badge-content--LBMQr\";\nexport var rsBadgeCyan = \"toc-module--rs-badge-cyan--sT-Ib\";\nexport var rsBadgeGreen = \"toc-module--rs-badge-green---eOo6\";\nexport var rsBadgeIndependent = \"toc-module--rs-badge-independent--Tn8-k\";\nexport var rsBadgeOrange = \"toc-module--rs-badge-orange--naDe+\";\nexport var rsBadgeRed = \"toc-module--rs-badge-red--YaVoC\";\nexport var rsBadgeViolet = \"toc-module--rs-badge-violet--rigYi\";\nexport var rsBadgeYellow = \"toc-module--rs-badge-yellow--wDJz4\";\nexport var rsBtnBlue = \"toc-module--rs-btn-blue--O9gKg\";\nexport var rsBtnCyan = \"toc-module--rs-btn-cyan--BDP0O\";\nexport var rsBtnGreen = \"toc-module--rs-btn-green--2yAU1\";\nexport var rsBtnOrange = \"toc-module--rs-btn-orange--AKcds\";\nexport var rsBtnRed = \"toc-module--rs-btn-red--WD07Q\";\nexport var rsBtnViolet = \"toc-module--rs-btn-violet--cCUdo\";\nexport var rsBtnYellow = \"toc-module--rs-btn-yellow--q04nO\";\nexport var rsFlexBoxGridItem1 = \"toc-module--rs-flex-box-grid-item-1--QT4aj\";\nexport var rsFlexBoxGridItem10 = \"toc-module--rs-flex-box-grid-item-10--u82MK\";\nexport var rsFlexBoxGridItem11 = \"toc-module--rs-flex-box-grid-item-11--2FAvD\";\nexport var rsFlexBoxGridItem12 = \"toc-module--rs-flex-box-grid-item-12--NXHZR\";\nexport var rsFlexBoxGridItem13 = \"toc-module--rs-flex-box-grid-item-13--w7WSc\";\nexport var rsFlexBoxGridItem14 = \"toc-module--rs-flex-box-grid-item-14--pE0SM\";\nexport var rsFlexBoxGridItem15 = \"toc-module--rs-flex-box-grid-item-15--Ou1p+\";\nexport var rsFlexBoxGridItem16 = \"toc-module--rs-flex-box-grid-item-16--P1IJC\";\nexport var rsFlexBoxGridItem17 = \"toc-module--rs-flex-box-grid-item-17--l8QcK\";\nexport var rsFlexBoxGridItem18 = \"toc-module--rs-flex-box-grid-item-18--lb8c7\";\nexport var rsFlexBoxGridItem19 = \"toc-module--rs-flex-box-grid-item-19--72YJK\";\nexport var rsFlexBoxGridItem2 = \"toc-module--rs-flex-box-grid-item-2---NHPM\";\nexport var rsFlexBoxGridItem20 = \"toc-module--rs-flex-box-grid-item-20--rETJq\";\nexport var rsFlexBoxGridItem21 = \"toc-module--rs-flex-box-grid-item-21--lWOop\";\nexport var rsFlexBoxGridItem22 = \"toc-module--rs-flex-box-grid-item-22---6v+h\";\nexport var rsFlexBoxGridItem23 = \"toc-module--rs-flex-box-grid-item-23--IfDfk\";\nexport var rsFlexBoxGridItem24 = \"toc-module--rs-flex-box-grid-item-24--wZcWq\";\nexport var rsFlexBoxGridItem3 = \"toc-module--rs-flex-box-grid-item-3--MN12p\";\nexport var rsFlexBoxGridItem4 = \"toc-module--rs-flex-box-grid-item-4--W2bS5\";\nexport var rsFlexBoxGridItem5 = \"toc-module--rs-flex-box-grid-item-5--yMHZR\";\nexport var rsFlexBoxGridItem6 = \"toc-module--rs-flex-box-grid-item-6--QSXTB\";\nexport var rsFlexBoxGridItem7 = \"toc-module--rs-flex-box-grid-item-7--I6egl\";\nexport var rsFlexBoxGridItem8 = \"toc-module--rs-flex-box-grid-item-8--UUWgo\";\nexport var rsFlexBoxGridItem9 = \"toc-module--rs-flex-box-grid-item-9--4gpzr\";\nexport var rsFlexBoxGridItemOrder1 = \"toc-module--rs-flex-box-grid-item-order-1--9X-XQ\";\nexport var rsFlexBoxGridItemOrder10 = \"toc-module--rs-flex-box-grid-item-order-10--uP-tG\";\nexport var rsFlexBoxGridItemOrder11 = \"toc-module--rs-flex-box-grid-item-order-11--jquWO\";\nexport var rsFlexBoxGridItemOrder12 = \"toc-module--rs-flex-box-grid-item-order-12--8h2bi\";\nexport var rsFlexBoxGridItemOrder13 = \"toc-module--rs-flex-box-grid-item-order-13--51J5y\";\nexport var rsFlexBoxGridItemOrder14 = \"toc-module--rs-flex-box-grid-item-order-14--tJGCo\";\nexport var rsFlexBoxGridItemOrder15 = \"toc-module--rs-flex-box-grid-item-order-15--3Je+3\";\nexport var rsFlexBoxGridItemOrder16 = \"toc-module--rs-flex-box-grid-item-order-16--ZuYdz\";\nexport var rsFlexBoxGridItemOrder17 = \"toc-module--rs-flex-box-grid-item-order-17--rlGb3\";\nexport var rsFlexBoxGridItemOrder18 = \"toc-module--rs-flex-box-grid-item-order-18--ZE+h9\";\nexport var rsFlexBoxGridItemOrder19 = \"toc-module--rs-flex-box-grid-item-order-19--414LH\";\nexport var rsFlexBoxGridItemOrder2 = \"toc-module--rs-flex-box-grid-item-order-2--uoD4k\";\nexport var rsFlexBoxGridItemOrder20 = \"toc-module--rs-flex-box-grid-item-order-20--l+Cw1\";\nexport var rsFlexBoxGridItemOrder21 = \"toc-module--rs-flex-box-grid-item-order-21--V2sFj\";\nexport var rsFlexBoxGridItemOrder22 = \"toc-module--rs-flex-box-grid-item-order-22--F+5Zd\";\nexport var rsFlexBoxGridItemOrder23 = \"toc-module--rs-flex-box-grid-item-order-23--PQQ6e\";\nexport var rsFlexBoxGridItemOrder24 = \"toc-module--rs-flex-box-grid-item-order-24--hC3ZT\";\nexport var rsFlexBoxGridItemOrder3 = \"toc-module--rs-flex-box-grid-item-order-3--F439P\";\nexport var rsFlexBoxGridItemOrder4 = \"toc-module--rs-flex-box-grid-item-order-4--z799m\";\nexport var rsFlexBoxGridItemOrder5 = \"toc-module--rs-flex-box-grid-item-order-5--IXV2p\";\nexport var rsFlexBoxGridItemOrder6 = \"toc-module--rs-flex-box-grid-item-order-6--0VMwX\";\nexport var rsFlexBoxGridItemOrder7 = \"toc-module--rs-flex-box-grid-item-order-7--dyNrN\";\nexport var rsFlexBoxGridItemOrder8 = \"toc-module--rs-flex-box-grid-item-order-8--v+Nie\";\nexport var rsFlexBoxGridItemOrder9 = \"toc-module--rs-flex-box-grid-item-order-9--93lH-\";\nexport var rsTagBlue = \"toc-module--rs-tag-blue--W7Nos\";\nexport var rsTagCyan = \"toc-module--rs-tag-cyan--CPjK8\";\nexport var rsTagGreen = \"toc-module--rs-tag-green--+7OJ8\";\nexport var rsTagOrange = \"toc-module--rs-tag-orange--aRwIG\";\nexport var rsTagRed = \"toc-module--rs-tag-red--551nL\";\nexport var rsTagViolet = \"toc-module--rs-tag-violet--czFQD\";\nexport var rsTagYellow = \"toc-module--rs-tag-yellow--4pA0r\";\nexport var rsThemeDark = \"toc-module--rs-theme-dark--fpcdS\";\nexport var rsThemeHighContrast = \"toc-module--rs-theme-high-contrast--jjL19\";\nexport var toc = \"toc-module--toc--f-F0M\";\nexport var tocActive = \"toc-module--toc-active--i8PHG\";\nexport var tocAffix = \"toc-module--toc-affix--5wXEN\";\nexport var tocAffixBottom = \"toc-module--toc-affix-bottom--TZfl5\";\nexport var tocContainer = \"toc-module--toc-container--ixP4M\";\nexport var tocCurrent = \"toc-module--toc-current--QChS7\";\nexport var tocDebug = \"toc-module--toc-debug--xz3qb\";","var isSymbol = require('./isSymbol');\n\n/** Used as references for the maximum length and index of an array. */\nvar MAX_ARRAY_LENGTH = 4294967295,\n    MAX_ARRAY_INDEX = MAX_ARRAY_LENGTH - 1;\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeFloor = Math.floor,\n    nativeMin = Math.min;\n\n/**\n * The base implementation of `_.sortedIndexBy` and `_.sortedLastIndexBy`\n * which invokes `iteratee` for `value` and each element of `array` to compute\n * their sort ranking. The iteratee is invoked with one argument; (value).\n *\n * @private\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @param {Function} iteratee The iteratee invoked per element.\n * @param {boolean} [retHighest] Specify returning the highest qualified index.\n * @returns {number} Returns the index at which `value` should be inserted\n *  into `array`.\n */\nfunction baseSortedIndexBy(array, value, iteratee, retHighest) {\n  var low = 0,\n      high = array == null ? 0 : array.length;\n  if (high === 0) {\n    return 0;\n  }\n\n  value = iteratee(value);\n  var valIsNaN = value !== value,\n      valIsNull = value === null,\n      valIsSymbol = isSymbol(value),\n      valIsUndefined = value === undefined;\n\n  while (low < high) {\n    var mid = nativeFloor((low + high) / 2),\n        computed = iteratee(array[mid]),\n        othIsDefined = computed !== undefined,\n        othIsNull = computed === null,\n        othIsReflexive = computed === computed,\n        othIsSymbol = isSymbol(computed);\n\n    if (valIsNaN) {\n      var setLow = retHighest || othIsReflexive;\n    } else if (valIsUndefined) {\n      setLow = othIsReflexive && (retHighest || othIsDefined);\n    } else if (valIsNull) {\n      setLow = othIsReflexive && othIsDefined && (retHighest || !othIsNull);\n    } else if (valIsSymbol) {\n      setLow = othIsReflexive && othIsDefined && !othIsNull && (retHighest || !othIsSymbol);\n    } else if (othIsNull || othIsSymbol) {\n      setLow = false;\n    } else {\n      setLow = retHighest ? (computed <= value) : (computed < value);\n    }\n    if (setLow) {\n      low = mid + 1;\n    } else {\n      high = mid;\n    }\n  }\n  return nativeMin(high, MAX_ARRAY_INDEX);\n}\n\nmodule.exports = baseSortedIndexBy;\n","var baseIteratee = require('./_baseIteratee'),\n    baseSortedIndexBy = require('./_baseSortedIndexBy');\n\n/**\n * This method is like `_.sortedIndex` except that it accepts `iteratee`\n * which is invoked for `value` and each element of `array` to compute their\n * sort ranking. The iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {number} Returns the index at which `value` should be inserted\n *  into `array`.\n * @example\n *\n * var objects = [{ 'x': 4 }, { 'x': 5 }];\n *\n * _.sortedIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });\n * // => 0\n *\n * // The `_.property` iteratee shorthand.\n * _.sortedIndexBy(objects, { 'x': 4 }, 'x');\n * // => 0\n */\nfunction sortedIndexBy(array, value, iteratee) {\n  return baseSortedIndexBy(array, value, baseIteratee(iteratee, 2));\n}\n\nmodule.exports = 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