"use strict";

/* ---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See License.txt in the project root for license information.
 *-------------------------------------------------------------------------------------------- */
Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.coalesce = exports.tail = void 0;
/**
 * Returns the last element of an array.
 * @param array The array.
 * @param n Which element from the end (default is zero).
 */
function tail(array, n = 0) {
  return array[array.length - (1 + n)];
}
exports.tail = _get__("tail");
/**
 * @returns a new array with all falsy values removed. The original array IS NOT modified.
 */
function coalesce(array) {
  if (!array) {
    return array;
  }
  return array.filter(e => !!e);
}
exports.coalesce = _get__("coalesce");
function _getGlobalObject() {
  try {
    if (!!global) {
      return global;
    }
  } catch (e) {
    try {
      if (!!window) {
        return window;
      }
    } catch (e) {
      return this;
    }
  }
}
;
var _RewireModuleId__ = null;
function _getRewireModuleId__() {
  if (_RewireModuleId__ === null) {
    let globalVariable = _getGlobalObject();
    if (!globalVariable.__$$GLOBAL_REWIRE_NEXT_MODULE_ID__) {
      globalVariable.__$$GLOBAL_REWIRE_NEXT_MODULE_ID__ = 0;
    }
    _RewireModuleId__ = __$$GLOBAL_REWIRE_NEXT_MODULE_ID__++;
  }
  return _RewireModuleId__;
}
function _getRewireRegistry__() {
  let theGlobalVariable = _getGlobalObject();
  if (!theGlobalVariable.__$$GLOBAL_REWIRE_REGISTRY__) {
    theGlobalVariable.__$$GLOBAL_REWIRE_REGISTRY__ = Object.create(null);
  }
  return theGlobalVariable.__$$GLOBAL_REWIRE_REGISTRY__;
}
function _getRewiredData__() {
  let moduleId = _getRewireModuleId__();
  let registry = _getRewireRegistry__();
  let rewireData = registry[moduleId];
  if (!rewireData) {
    registry[moduleId] = Object.create(null);
    rewireData = registry[moduleId];
  }
  return rewireData;
}
(function registerResetAll() {
  let theGlobalVariable = _getGlobalObject();
  if (!theGlobalVariable['__rewire_reset_all__']) {
    theGlobalVariable['__rewire_reset_all__'] = function () {
      theGlobalVariable.__$$GLOBAL_REWIRE_REGISTRY__ = Object.create(null);
    };
  }
})();
var INTENTIONAL_UNDEFINED = '__INTENTIONAL_UNDEFINED__';
let _RewireAPI__ = {};
(function () {
  function addPropertyToAPIObject(name, value) {
    Object.defineProperty(_RewireAPI__, name, {
      value: value,
      enumerable: false,
      configurable: true
    });
  }
  addPropertyToAPIObject('__get__', _get__);
  addPropertyToAPIObject('__GetDependency__', _get__);
  addPropertyToAPIObject('__Rewire__', _set__);
  addPropertyToAPIObject('__set__', _set__);
  addPropertyToAPIObject('__reset__', _reset__);
  addPropertyToAPIObject('__ResetDependency__', _reset__);
  addPropertyToAPIObject('__with__', _with__);
})();
function _get__(variableName) {
  let rewireData = _getRewiredData__();
  if (rewireData[variableName] === undefined) {
    return _get_original__(variableName);
  } else {
    var value = rewireData[variableName];
    if (value === INTENTIONAL_UNDEFINED) {
      return undefined;
    } else {
      return value;
    }
  }
}
function _get_original__(variableName) {
  switch (variableName) {
    case "tail":
      return tail;
    case "coalesce":
      return coalesce;
  }
  return undefined;
}
function _assign__(variableName, value) {
  let rewireData = _getRewiredData__();
  if (rewireData[variableName] === undefined) {
    return _set_original__(variableName, value);
  } else {
    return rewireData[variableName] = value;
  }
}
function _set_original__(variableName, _value) {
  switch (variableName) {}
  return undefined;
}
function _update_operation__(operation, variableName, prefix) {
  var oldValue = _get__(variableName);
  var newValue = operation === '++' ? oldValue + 1 : oldValue - 1;
  _assign__(variableName, newValue);
  return prefix ? newValue : oldValue;
}
function _set__(variableName, value) {
  let rewireData = _getRewiredData__();
  if (typeof variableName === 'object') {
    Object.keys(variableName).forEach(function (name) {
      rewireData[name] = variableName[name];
    });
    return function () {
      Object.keys(variableName).forEach(function (name) {
        _reset__(variableName);
      });
    };
  } else {
    if (value === undefined) {
      rewireData[variableName] = INTENTIONAL_UNDEFINED;
    } else {
      rewireData[variableName] = value;
    }
    return function () {
      _reset__(variableName);
    };
  }
}
function _reset__(variableName) {
  let rewireData = _getRewiredData__();
  delete rewireData[variableName];
  if (Object.keys(rewireData).length == 0) {
    delete _getRewireRegistry__()[_getRewireModuleId__];
  }
  ;
}
function _with__(object) {
  let rewireData = _getRewiredData__();
  var rewiredVariableNames = Object.keys(object);
  var previousValues = {};
  function reset() {
    rewiredVariableNames.forEach(function (variableName) {
      rewireData[variableName] = previousValues[variableName];
    });
  }
  return function (callback) {
    rewiredVariableNames.forEach(function (variableName) {
      previousValues[variableName] = rewireData[variableName];
      rewireData[variableName] = object[variableName];
    });
    let result = callback();
    if (!!result && typeof result.then == 'function') {
      result.then(reset).catch(reset);
    } else {
      reset();
    }
    return result;
  };
}
let _typeOfOriginalExport = typeof module.exports;
function addNonEnumerableProperty(name, value) {
  Object.defineProperty(module.exports, name, {
    value: value,
    enumerable: false,
    configurable: true
  });
}
if ((_typeOfOriginalExport === 'object' || _typeOfOriginalExport === 'function') && Object.isExtensible(module.exports)) {
  addNonEnumerableProperty('__get__', _get__);
  addNonEnumerableProperty('__GetDependency__', _get__);
  addNonEnumerableProperty('__Rewire__', _set__);
  addNonEnumerableProperty('__set__', _set__);
  addNonEnumerableProperty('__reset__', _reset__);
  addNonEnumerableProperty('__ResetDependency__', _reset__);
  addNonEnumerableProperty('__with__', _with__);
  addNonEnumerableProperty('__RewireAPI__', _RewireAPI__);
}