downshift/dist/downshift.umd.js

(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('react')) :
  typeof define === 'function' && define.amd ? define(['exports', 'react'], factory) :
  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.Downshift = {}, global.React));
}(this, (function (exports, react) { 'use strict';

  function _objectWithoutPropertiesLoose(source, excluded) {
    if (source == null) return {};
    var target = {};
    var sourceKeys = Object.keys(source);
    var key, i;

    for (i = 0; i < sourceKeys.length; i++) {
      key = sourceKeys[i];
      if (excluded.indexOf(key) >= 0) continue;
      target[key] = source[key];
    }

    return target;
  }

  function _extends() {
    _extends = Object.assign || function (target) {
      for (var i = 1; i < arguments.length; i++) {
        var source = arguments[i];

        for (var key in source) {
          if (Object.prototype.hasOwnProperty.call(source, key)) {
            target[key] = source[key];
          }
        }
      }

      return target;
    };

    return _extends.apply(this, arguments);
  }

  function _assertThisInitialized(self) {
    if (self === void 0) {
      throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
    }

    return self;
  }

  function _inheritsLoose(subClass, superClass) {
    subClass.prototype = Object.create(superClass.prototype);
    subClass.prototype.constructor = subClass;
    subClass.__proto__ = superClass;
  }

  function createCommonjsModule(fn) {
    var module = { exports: {} };
  	return fn(module, module.exports), module.exports;
  }

  /** @license React v16.13.1
   * react-is.development.js
   *
   * Copyright (c) Facebook, Inc. and its affiliates.
   *
   * This source code is licensed under the MIT license found in the
   * LICENSE file in the root directory of this source tree.
   */
  var reactIs_development = createCommonjsModule(function (module, exports) {

    {
      (function () {
        // nor polyfill, then a plain number is used for performance.

        var hasSymbol = typeof Symbol === 'function' && Symbol.for;
        var REACT_ELEMENT_TYPE = hasSymbol ? Symbol.for('react.element') : 0xeac7;
        var REACT_PORTAL_TYPE = hasSymbol ? Symbol.for('react.portal') : 0xeaca;
        var REACT_FRAGMENT_TYPE = hasSymbol ? Symbol.for('react.fragment') : 0xeacb;
        var REACT_STRICT_MODE_TYPE = hasSymbol ? Symbol.for('react.strict_mode') : 0xeacc;
        var REACT_PROFILER_TYPE = hasSymbol ? Symbol.for('react.profiler') : 0xead2;
        var REACT_PROVIDER_TYPE = hasSymbol ? Symbol.for('react.provider') : 0xeacd;
        var REACT_CONTEXT_TYPE = hasSymbol ? Symbol.for('react.context') : 0xeace; // TODO: We don't use AsyncMode or ConcurrentMode anymore. They were temporary
        // (unstable) APIs that have been removed. Can we remove the symbols?

        var REACT_ASYNC_MODE_TYPE = hasSymbol ? Symbol.for('react.async_mode') : 0xeacf;
        var REACT_CONCURRENT_MODE_TYPE = hasSymbol ? Symbol.for('react.concurrent_mode') : 0xeacf;
        var REACT_FORWARD_REF_TYPE = hasSymbol ? Symbol.for('react.forward_ref') : 0xead0;
        var REACT_SUSPENSE_TYPE = hasSymbol ? Symbol.for('react.suspense') : 0xead1;
        var REACT_SUSPENSE_LIST_TYPE = hasSymbol ? Symbol.for('react.suspense_list') : 0xead8;
        var REACT_MEMO_TYPE = hasSymbol ? Symbol.for('react.memo') : 0xead3;
        var REACT_LAZY_TYPE = hasSymbol ? Symbol.for('react.lazy') : 0xead4;
        var REACT_BLOCK_TYPE = hasSymbol ? Symbol.for('react.block') : 0xead9;
        var REACT_FUNDAMENTAL_TYPE = hasSymbol ? Symbol.for('react.fundamental') : 0xead5;
        var REACT_RESPONDER_TYPE = hasSymbol ? Symbol.for('react.responder') : 0xead6;
        var REACT_SCOPE_TYPE = hasSymbol ? Symbol.for('react.scope') : 0xead7;

        function isValidElementType(type) {
          return typeof type === 'string' || typeof type === 'function' || // Note: its typeof might be other than 'symbol' or 'number' if it's a polyfill.
          type === REACT_FRAGMENT_TYPE || type === REACT_CONCURRENT_MODE_TYPE || type === REACT_PROFILER_TYPE || type === REACT_STRICT_MODE_TYPE || type === REACT_SUSPENSE_TYPE || type === REACT_SUSPENSE_LIST_TYPE || typeof type === 'object' && type !== null && (type.$$typeof === REACT_LAZY_TYPE || type.$$typeof === REACT_MEMO_TYPE || type.$$typeof === REACT_PROVIDER_TYPE || type.$$typeof === REACT_CONTEXT_TYPE || type.$$typeof === REACT_FORWARD_REF_TYPE || type.$$typeof === REACT_FUNDAMENTAL_TYPE || type.$$typeof === REACT_RESPONDER_TYPE || type.$$typeof === REACT_SCOPE_TYPE || type.$$typeof === REACT_BLOCK_TYPE);
        }

        function typeOf(object) {
          if (typeof object === 'object' && object !== null) {
            var $$typeof = object.$$typeof;

            switch ($$typeof) {
              case REACT_ELEMENT_TYPE:
                var type = object.type;

                switch (type) {
                  case REACT_ASYNC_MODE_TYPE:
                  case REACT_CONCURRENT_MODE_TYPE:
                  case REACT_FRAGMENT_TYPE:
                  case REACT_PROFILER_TYPE:
                  case REACT_STRICT_MODE_TYPE:
                  case REACT_SUSPENSE_TYPE:
                    return type;

                  default:
                    var $$typeofType = type && type.$$typeof;

                    switch ($$typeofType) {
                      case REACT_CONTEXT_TYPE:
                      case REACT_FORWARD_REF_TYPE:
                      case REACT_LAZY_TYPE:
                      case REACT_MEMO_TYPE:
                      case REACT_PROVIDER_TYPE:
                        return $$typeofType;

                      default:
                        return $$typeof;
                    }

                }

              case REACT_PORTAL_TYPE:
                return $$typeof;
            }
          }

          return undefined;
        } // AsyncMode is deprecated along with isAsyncMode


        var AsyncMode = REACT_ASYNC_MODE_TYPE;
        var ConcurrentMode = REACT_CONCURRENT_MODE_TYPE;
        var ContextConsumer = REACT_CONTEXT_TYPE;
        var ContextProvider = REACT_PROVIDER_TYPE;
        var Element = REACT_ELEMENT_TYPE;
        var ForwardRef = REACT_FORWARD_REF_TYPE;
        var Fragment = REACT_FRAGMENT_TYPE;
        var Lazy = REACT_LAZY_TYPE;
        var Memo = REACT_MEMO_TYPE;
        var Portal = REACT_PORTAL_TYPE;
        var Profiler = REACT_PROFILER_TYPE;
        var StrictMode = REACT_STRICT_MODE_TYPE;
        var Suspense = REACT_SUSPENSE_TYPE;
        var hasWarnedAboutDeprecatedIsAsyncMode = false; // AsyncMode should be deprecated

        function isAsyncMode(object) {
          {
            if (!hasWarnedAboutDeprecatedIsAsyncMode) {
              hasWarnedAboutDeprecatedIsAsyncMode = true; // Using console['warn'] to evade Babel and ESLint

              console['warn']('The ReactIs.isAsyncMode() alias has been deprecated, ' + 'and will be removed in React 17+. Update your code to use ' + 'ReactIs.isConcurrentMode() instead. It has the exact same API.');
            }
          }
          return isConcurrentMode(object) || typeOf(object) === REACT_ASYNC_MODE_TYPE;
        }

        function isConcurrentMode(object) {
          return typeOf(object) === REACT_CONCURRENT_MODE_TYPE;
        }

        function isContextConsumer(object) {
          return typeOf(object) === REACT_CONTEXT_TYPE;
        }

        function isContextProvider(object) {
          return typeOf(object) === REACT_PROVIDER_TYPE;
        }

        function isElement(object) {
          return typeof object === 'object' && object !== null && object.$$typeof === REACT_ELEMENT_TYPE;
        }

        function isForwardRef(object) {
          return typeOf(object) === REACT_FORWARD_REF_TYPE;
        }

        function isFragment(object) {
          return typeOf(object) === REACT_FRAGMENT_TYPE;
        }

        function isLazy(object) {
          return typeOf(object) === REACT_LAZY_TYPE;
        }

        function isMemo(object) {
          return typeOf(object) === REACT_MEMO_TYPE;
        }

        function isPortal(object) {
          return typeOf(object) === REACT_PORTAL_TYPE;
        }

        function isProfiler(object) {
          return typeOf(object) === REACT_PROFILER_TYPE;
        }

        function isStrictMode(object) {
          return typeOf(object) === REACT_STRICT_MODE_TYPE;
        }

        function isSuspense(object) {
          return typeOf(object) === REACT_SUSPENSE_TYPE;
        }

        exports.AsyncMode = AsyncMode;
        exports.ConcurrentMode = ConcurrentMode;
        exports.ContextConsumer = ContextConsumer;
        exports.ContextProvider = ContextProvider;
        exports.Element = Element;
        exports.ForwardRef = ForwardRef;
        exports.Fragment = Fragment;
        exports.Lazy = Lazy;
        exports.Memo = Memo;
        exports.Portal = Portal;
        exports.Profiler = Profiler;
        exports.StrictMode = StrictMode;
        exports.Suspense = Suspense;
        exports.isAsyncMode = isAsyncMode;
        exports.isConcurrentMode = isConcurrentMode;
        exports.isContextConsumer = isContextConsumer;
        exports.isContextProvider = isContextProvider;
        exports.isElement = isElement;
        exports.isForwardRef = isForwardRef;
        exports.isFragment = isFragment;
        exports.isLazy = isLazy;
        exports.isMemo = isMemo;
        exports.isPortal = isPortal;
        exports.isProfiler = isProfiler;
        exports.isStrictMode = isStrictMode;
        exports.isSuspense = isSuspense;
        exports.isValidElementType = isValidElementType;
        exports.typeOf = typeOf;
      })();
    }
  });

  var reactIs = createCommonjsModule(function (module) {

    {
      module.exports = reactIs_development;
    }
  });

  /*
  object-assign
  (c) Sindre Sorhus
  @license MIT
  */
  /* eslint-disable no-unused-vars */

  var getOwnPropertySymbols = Object.getOwnPropertySymbols;
  var hasOwnProperty = Object.prototype.hasOwnProperty;
  var propIsEnumerable = Object.prototype.propertyIsEnumerable;

  function toObject(val) {
    if (val === null || val === undefined) {
      throw new TypeError('Object.assign cannot be called with null or undefined');
    }

    return Object(val);
  }

  function shouldUseNative() {
    try {
      if (!Object.assign) {
        return false;
      } // Detect buggy property enumeration order in older V8 versions.
      // https://bugs.chromium.org/p/v8/issues/detail?id=4118


      var test1 = new String('abc'); // eslint-disable-line no-new-wrappers

      test1[5] = 'de';

      if (Object.getOwnPropertyNames(test1)[0] === '5') {
        return false;
      } // https://bugs.chromium.org/p/v8/issues/detail?id=3056


      var test2 = {};

      for (var i = 0; i < 10; i++) {
        test2['_' + String.fromCharCode(i)] = i;
      }

      var order2 = Object.getOwnPropertyNames(test2).map(function (n) {
        return test2[n];
      });

      if (order2.join('') !== '0123456789') {
        return false;
      } // https://bugs.chromium.org/p/v8/issues/detail?id=3056


      var test3 = {};
      'abcdefghijklmnopqrst'.split('').forEach(function (letter) {
        test3[letter] = letter;
      });

      if (Object.keys(Object.assign({}, test3)).join('') !== 'abcdefghijklmnopqrst') {
        return false;
      }

      return true;
    } catch (err) {
      // We don't expect any of the above to throw, but better to be safe.
      return false;
    }
  }

  var objectAssign = shouldUseNative() ? Object.assign : function (target, source) {
    var from;
    var to = toObject(target);
    var symbols;

    for (var s = 1; s < arguments.length; s++) {
      from = Object(arguments[s]);

      for (var key in from) {
        if (hasOwnProperty.call(from, key)) {
          to[key] = from[key];
        }
      }

      if (getOwnPropertySymbols) {
        symbols = getOwnPropertySymbols(from);

        for (var i = 0; i < symbols.length; i++) {
          if (propIsEnumerable.call(from, symbols[i])) {
            to[symbols[i]] = from[symbols[i]];
          }
        }
      }
    }

    return to;
  };

  /**
   * Copyright (c) 2013-present, Facebook, Inc.
   *
   * This source code is licensed under the MIT license found in the
   * LICENSE file in the root directory of this source tree.
   */

  var ReactPropTypesSecret = 'SECRET_DO_NOT_PASS_THIS_OR_YOU_WILL_BE_FIRED';
  var ReactPropTypesSecret_1 = ReactPropTypesSecret;

  /**
   * Copyright (c) 2013-present, Facebook, Inc.
   *
   * This source code is licensed under the MIT license found in the
   * LICENSE file in the root directory of this source tree.
   */

  var printWarning = function () {};

  {
    var ReactPropTypesSecret$1 = ReactPropTypesSecret_1;
    var loggedTypeFailures = {};
    var has = Function.call.bind(Object.prototype.hasOwnProperty);

    printWarning = function (text) {
      var message = 'Warning: ' + text;

      if (typeof console !== 'undefined') {
        console.error(message);
      }

      try {
        // --- Welcome to debugging React ---
        // This error was thrown as a convenience so that you can use this stack
        // to find the callsite that caused this warning to fire.
        throw new Error(message);
      } catch (x) {}
    };
  }
  /**
   * Assert that the values match with the type specs.
   * Error messages are memorized and will only be shown once.
   *
   * @param {object} typeSpecs Map of name to a ReactPropType
   * @param {object} values Runtime values that need to be type-checked
   * @param {string} location e.g. "prop", "context", "child context"
   * @param {string} componentName Name of the component for error messages.
   * @param {?Function} getStack Returns the component stack.
   * @private
   */


  function checkPropTypes(typeSpecs, values, location, componentName, getStack) {
    {
      for (var typeSpecName in typeSpecs) {
        if (has(typeSpecs, typeSpecName)) {
          var error; // Prop type validation may throw. In case they do, we don't want to
          // fail the render phase where it didn't fail before. So we log it.
          // After these have been cleaned up, we'll let them throw.

          try {
            // This is intentionally an invariant that gets caught. It's the same
            // behavior as without this statement except with a better message.
            if (typeof typeSpecs[typeSpecName] !== 'function') {
              var err = Error((componentName || 'React class') + ': ' + location + ' type `' + typeSpecName + '` is invalid; ' + 'it must be a function, usually from the `prop-types` package, but received `' + typeof typeSpecs[typeSpecName] + '`.');
              err.name = 'Invariant Violation';
              throw err;
            }

            error = typeSpecs[typeSpecName](values, typeSpecName, componentName, location, null, ReactPropTypesSecret$1);
          } catch (ex) {
            error = ex;
          }

          if (error && !(error instanceof Error)) {
            printWarning((componentName || 'React class') + ': type specification of ' + location + ' `' + typeSpecName + '` is invalid; the type checker ' + 'function must return `null` or an `Error` but returned a ' + typeof error + '. ' + 'You may have forgotten to pass an argument to the type checker ' + 'creator (arrayOf, instanceOf, objectOf, oneOf, oneOfType, and ' + 'shape all require an argument).');
          }

          if (error instanceof Error && !(error.message in loggedTypeFailures)) {
            // Only monitor this failure once because there tends to be a lot of the
            // same error.
            loggedTypeFailures[error.message] = true;
            var stack = getStack ? getStack() : '';
            printWarning('Failed ' + location + ' type: ' + error.message + (stack != null ? stack : ''));
          }
        }
      }
    }
  }
  /**
   * Resets warning cache when testing.
   *
   * @private
   */


  checkPropTypes.resetWarningCache = function () {
    {
      loggedTypeFailures = {};
    }
  };

  var checkPropTypes_1 = checkPropTypes;

  /**
   * Copyright (c) 2013-present, Facebook, Inc.
   *
   * This source code is licensed under the MIT license found in the
   * LICENSE file in the root directory of this source tree.
   */

  var has$1 = Function.call.bind(Object.prototype.hasOwnProperty);

  var printWarning$1 = function () {};

  {
    printWarning$1 = function (text) {
      var message = 'Warning: ' + text;

      if (typeof console !== 'undefined') {
        console.error(message);
      }

      try {
        // --- Welcome to debugging React ---
        // This error was thrown as a convenience so that you can use this stack
        // to find the callsite that caused this warning to fire.
        throw new Error(message);
      } catch (x) {}
    };
  }

  function emptyFunctionThatReturnsNull() {
    return null;
  }

  var factoryWithTypeCheckers = function (isValidElement, throwOnDirectAccess) {
    /* global Symbol */
    var ITERATOR_SYMBOL = typeof Symbol === 'function' && Symbol.iterator;
    var FAUX_ITERATOR_SYMBOL = '@@iterator'; // Before Symbol spec.

    /**
     * Returns the iterator method function contained on the iterable object.
     *
     * Be sure to invoke the function with the iterable as context:
     *
     *     var iteratorFn = getIteratorFn(myIterable);
     *     if (iteratorFn) {
     *       var iterator = iteratorFn.call(myIterable);
     *       ...
     *     }
     *
     * @param {?object} maybeIterable
     * @return {?function}
     */

    function getIteratorFn(maybeIterable) {
      var iteratorFn = maybeIterable && (ITERATOR_SYMBOL && maybeIterable[ITERATOR_SYMBOL] || maybeIterable[FAUX_ITERATOR_SYMBOL]);

      if (typeof iteratorFn === 'function') {
        return iteratorFn;
      }
    }
    /**
     * Collection of methods that allow declaration and validation of props that are
     * supplied to React components. Example usage:
     *
     *   var Props = require('ReactPropTypes');
     *   var MyArticle = React.createClass({
     *     propTypes: {
     *       // An optional string prop named "description".
     *       description: Props.string,
     *
     *       // A required enum prop named "category".
     *       category: Props.oneOf(['News','Photos']).isRequired,
     *
     *       // A prop named "dialog" that requires an instance of Dialog.
     *       dialog: Props.instanceOf(Dialog).isRequired
     *     },
     *     render: function() { ... }
     *   });
     *
     * A more formal specification of how these methods are used:
     *
     *   type := array|bool|func|object|number|string|oneOf([...])|instanceOf(...)
     *   decl := ReactPropTypes.{type}(.isRequired)?
     *
     * Each and every declaration produces a function with the same signature. This
     * allows the creation of custom validation functions. For example:
     *
     *  var MyLink = React.createClass({
     *    propTypes: {
     *      // An optional string or URI prop named "href".
     *      href: function(props, propName, componentName) {
     *        var propValue = props[propName];
     *        if (propValue != null && typeof propValue !== 'string' &&
     *            !(propValue instanceof URI)) {
     *          return new Error(
     *            'Expected a string or an URI for ' + propName + ' in ' +
     *            componentName
     *          );
     *        }
     *      }
     *    },
     *    render: function() {...}
     *  });
     *
     * @internal
     */


    var ANONYMOUS = '<<anonymous>>'; // Important!
    // Keep this list in sync with production version in `./factoryWithThrowingShims.js`.

    var ReactPropTypes = {
      array: createPrimitiveTypeChecker('array'),
      bool: createPrimitiveTypeChecker('boolean'),
      func: createPrimitiveTypeChecker('function'),
      number: createPrimitiveTypeChecker('number'),
      object: createPrimitiveTypeChecker('object'),
      string: createPrimitiveTypeChecker('string'),
      symbol: createPrimitiveTypeChecker('symbol'),
      any: createAnyTypeChecker(),
      arrayOf: createArrayOfTypeChecker,
      element: createElementTypeChecker(),
      elementType: createElementTypeTypeChecker(),
      instanceOf: createInstanceTypeChecker,
      node: createNodeChecker(),
      objectOf: createObjectOfTypeChecker,
      oneOf: createEnumTypeChecker,
      oneOfType: createUnionTypeChecker,
      shape: createShapeTypeChecker,
      exact: createStrictShapeTypeChecker
    };
    /**
     * inlined Object.is polyfill to avoid requiring consumers ship their own
     * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is
     */

    /*eslint-disable no-self-compare*/

    function is(x, y) {
      // SameValue algorithm
      if (x === y) {
        // Steps 1-5, 7-10
        // Steps 6.b-6.e: +0 != -0
        return x !== 0 || 1 / x === 1 / y;
      } else {
        // Step 6.a: NaN == NaN
        return x !== x && y !== y;
      }
    }
    /*eslint-enable no-self-compare*/

    /**
     * We use an Error-like object for backward compatibility as people may call
     * PropTypes directly and inspect their output. However, we don't use real
     * Errors anymore. We don't inspect their stack anyway, and creating them
     * is prohibitively expensive if they are created too often, such as what
     * happens in oneOfType() for any type before the one that matched.
     */


    function PropTypeError(message) {
      this.message = message;
      this.stack = '';
    } // Make `instanceof Error` still work for returned errors.


    PropTypeError.prototype = Error.prototype;

    function createChainableTypeChecker(validate) {
      {
        var manualPropTypeCallCache = {};
        var manualPropTypeWarningCount = 0;
      }

      function checkType(isRequired, props, propName, componentName, location, propFullName, secret) {
        componentName = componentName || ANONYMOUS;
        propFullName = propFullName || propName;

        if (secret !== ReactPropTypesSecret_1) {
          if (throwOnDirectAccess) {
            // New behavior only for users of `prop-types` package
            var err = new Error('Calling PropTypes validators directly is not supported by the `prop-types` package. ' + 'Use `PropTypes.checkPropTypes()` to call them. ' + 'Read more at http://fb.me/use-check-prop-types');
            err.name = 'Invariant Violation';
            throw err;
          } else if ( typeof console !== 'undefined') {
            // Old behavior for people using React.PropTypes
            var cacheKey = componentName + ':' + propName;

            if (!manualPropTypeCallCache[cacheKey] && // Avoid spamming the console because they are often not actionable except for lib authors
            manualPropTypeWarningCount < 3) {
              printWarning$1('You are manually calling a React.PropTypes validation ' + 'function for the `' + propFullName + '` prop on `' + componentName + '`. This is deprecated ' + 'and will throw in the standalone `prop-types` package. ' + 'You may be seeing this warning due to a third-party PropTypes ' + 'library. See https://fb.me/react-warning-dont-call-proptypes ' + 'for details.');
              manualPropTypeCallCache[cacheKey] = true;
              manualPropTypeWarningCount++;
            }
          }
        }

        if (props[propName] == null) {
          if (isRequired) {
            if (props[propName] === null) {
              return new PropTypeError('The ' + location + ' `' + propFullName + '` is marked as required ' + ('in `' + componentName + '`, but its value is `null`.'));
            }

            return new PropTypeError('The ' + location + ' `' + propFullName + '` is marked as required in ' + ('`' + componentName + '`, but its value is `undefined`.'));
          }

          return null;
        } else {
          return validate(props, propName, componentName, location, propFullName);
        }
      }

      var chainedCheckType = checkType.bind(null, false);
      chainedCheckType.isRequired = checkType.bind(null, true);
      return chainedCheckType;
    }

    function createPrimitiveTypeChecker(expectedType) {
      function validate(props, propName, componentName, location, propFullName, secret) {
        var propValue = props[propName];
        var propType = getPropType(propValue);

        if (propType !== expectedType) {
          // `propValue` being instance of, say, date/regexp, pass the 'object'
          // check, but we can offer a more precise error message here rather than
          // 'of type `object`'.
          var preciseType = getPreciseType(propValue);
          return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type ' + ('`' + preciseType + '` supplied to `' + componentName + '`, expected ') + ('`' + expectedType + '`.'));
        }

        return null;
      }

      return createChainableTypeChecker(validate);
    }

    function createAnyTypeChecker() {
      return createChainableTypeChecker(emptyFunctionThatReturnsNull);
    }

    function createArrayOfTypeChecker(typeChecker) {
      function validate(props, propName, componentName, location, propFullName) {
        if (typeof typeChecker !== 'function') {
          return new PropTypeError('Property `' + propFullName + '` of component `' + componentName + '` has invalid PropType notation inside arrayOf.');
        }

        var propValue = props[propName];

        if (!Array.isArray(propValue)) {
          var propType = getPropType(propValue);
          return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type ' + ('`' + propType + '` supplied to `' + componentName + '`, expected an array.'));
        }

        for (var i = 0; i < propValue.length; i++) {
          var error = typeChecker(propValue, i, componentName, location, propFullName + '[' + i + ']', ReactPropTypesSecret_1);

          if (error instanceof Error) {
            return error;
          }
        }

        return null;
      }

      return createChainableTypeChecker(validate);
    }

    function createElementTypeChecker() {
      function validate(props, propName, componentName, location, propFullName) {
        var propValue = props[propName];

        if (!isValidElement(propValue)) {
          var propType = getPropType(propValue);
          return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type ' + ('`' + propType + '` supplied to `' + componentName + '`, expected a single ReactElement.'));
        }

        return null;
      }

      return createChainableTypeChecker(validate);
    }

    function createElementTypeTypeChecker() {
      function validate(props, propName, componentName, location, propFullName) {
        var propValue = props[propName];

        if (!reactIs.isValidElementType(propValue)) {
          var propType = getPropType(propValue);
          return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type ' + ('`' + propType + '` supplied to `' + componentName + '`, expected a single ReactElement type.'));
        }

        return null;
      }

      return createChainableTypeChecker(validate);
    }

    function createInstanceTypeChecker(expectedClass) {
      function validate(props, propName, componentName, location, propFullName) {
        if (!(props[propName] instanceof expectedClass)) {
          var expectedClassName = expectedClass.name || ANONYMOUS;
          var actualClassName = getClassName(props[propName]);
          return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type ' + ('`' + actualClassName + '` supplied to `' + componentName + '`, expected ') + ('instance of `' + expectedClassName + '`.'));
        }

        return null;
      }

      return createChainableTypeChecker(validate);
    }

    function createEnumTypeChecker(expectedValues) {
      if (!Array.isArray(expectedValues)) {
        {
          if (arguments.length > 1) {
            printWarning$1('Invalid arguments supplied to oneOf, expected an array, got ' + arguments.length + ' arguments. ' + 'A common mistake is to write oneOf(x, y, z) instead of oneOf([x, y, z]).');
          } else {
            printWarning$1('Invalid argument supplied to oneOf, expected an array.');
          }
        }

        return emptyFunctionThatReturnsNull;
      }

      function validate(props, propName, componentName, location, propFullName) {
        var propValue = props[propName];

        for (var i = 0; i < expectedValues.length; i++) {
          if (is(propValue, expectedValues[i])) {
            return null;
          }
        }

        var valuesString = JSON.stringify(expectedValues, function replacer(key, value) {
          var type = getPreciseType(value);

          if (type === 'symbol') {
            return String(value);
          }

          return value;
        });
        return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of value `' + String(propValue) + '` ' + ('supplied to `' + componentName + '`, expected one of ' + valuesString + '.'));
      }

      return createChainableTypeChecker(validate);
    }

    function createObjectOfTypeChecker(typeChecker) {
      function validate(props, propName, componentName, location, propFullName) {
        if (typeof typeChecker !== 'function') {
          return new PropTypeError('Property `' + propFullName + '` of component `' + componentName + '` has invalid PropType notation inside objectOf.');
        }

        var propValue = props[propName];
        var propType = getPropType(propValue);

        if (propType !== 'object') {
          return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type ' + ('`' + propType + '` supplied to `' + componentName + '`, expected an object.'));
        }

        for (var key in propValue) {
          if (has$1(propValue, key)) {
            var error = typeChecker(propValue, key, componentName, location, propFullName + '.' + key, ReactPropTypesSecret_1);

            if (error instanceof Error) {
              return error;
            }
          }
        }

        return null;
      }

      return createChainableTypeChecker(validate);
    }

    function createUnionTypeChecker(arrayOfTypeCheckers) {
      if (!Array.isArray(arrayOfTypeCheckers)) {
         printWarning$1('Invalid argument supplied to oneOfType, expected an instance of array.') ;
        return emptyFunctionThatReturnsNull;
      }

      for (var i = 0; i < arrayOfTypeCheckers.length; i++) {
        var checker = arrayOfTypeCheckers[i];

        if (typeof checker !== 'function') {
          printWarning$1('Invalid argument supplied to oneOfType. Expected an array of check functions, but ' + 'received ' + getPostfixForTypeWarning(checker) + ' at index ' + i + '.');
          return emptyFunctionThatReturnsNull;
        }
      }

      function validate(props, propName, componentName, location, propFullName) {
        for (var i = 0; i < arrayOfTypeCheckers.length; i++) {
          var checker = arrayOfTypeCheckers[i];

          if (checker(props, propName, componentName, location, propFullName, ReactPropTypesSecret_1) == null) {
            return null;
          }
        }

        return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` supplied to ' + ('`' + componentName + '`.'));
      }

      return createChainableTypeChecker(validate);
    }

    function createNodeChecker() {
      function validate(props, propName, componentName, location, propFullName) {
        if (!isNode(props[propName])) {
          return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` supplied to ' + ('`' + componentName + '`, expected a ReactNode.'));
        }

        return null;
      }

      return createChainableTypeChecker(validate);
    }

    function createShapeTypeChecker(shapeTypes) {
      function validate(props, propName, componentName, location, propFullName) {
        var propValue = props[propName];
        var propType = getPropType(propValue);

        if (propType !== 'object') {
          return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type `' + propType + '` ' + ('supplied to `' + componentName + '`, expected `object`.'));
        }

        for (var key in shapeTypes) {
          var checker = shapeTypes[key];

          if (!checker) {
            continue;
          }

          var error = checker(propValue, key, componentName, location, propFullName + '.' + key, ReactPropTypesSecret_1);

          if (error) {
            return error;
          }
        }

        return null;
      }

      return createChainableTypeChecker(validate);
    }

    function createStrictShapeTypeChecker(shapeTypes) {
      function validate(props, propName, componentName, location, propFullName) {
        var propValue = props[propName];
        var propType = getPropType(propValue);

        if (propType !== 'object') {
          return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type `' + propType + '` ' + ('supplied to `' + componentName + '`, expected `object`.'));
        } // We need to check all keys in case some are required but missing from
        // props.


        var allKeys = objectAssign({}, props[propName], shapeTypes);

        for (var key in allKeys) {
          var checker = shapeTypes[key];

          if (!checker) {
            return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` key `' + key + '` supplied to `' + componentName + '`.' + '\nBad object: ' + JSON.stringify(props[propName], null, '  ') + '\nValid keys: ' + JSON.stringify(Object.keys(shapeTypes), null, '  '));
          }

          var error = checker(propValue, key, componentName, location, propFullName + '.' + key, ReactPropTypesSecret_1);

          if (error) {
            return error;
          }
        }

        return null;
      }

      return createChainableTypeChecker(validate);
    }

    function isNode(propValue) {
      switch (typeof propValue) {
        case 'number':
        case 'string':
        case 'undefined':
          return true;

        case 'boolean':
          return !propValue;

        case 'object':
          if (Array.isArray(propValue)) {
            return propValue.every(isNode);
          }

          if (propValue === null || isValidElement(propValue)) {
            return true;
          }

          var iteratorFn = getIteratorFn(propValue);

          if (iteratorFn) {
            var iterator = iteratorFn.call(propValue);
            var step;

            if (iteratorFn !== propValue.entries) {
              while (!(step = iterator.next()).done) {
                if (!isNode(step.value)) {
                  return false;
                }
              }
            } else {
              // Iterator will provide entry [k,v] tuples rather than values.
              while (!(step = iterator.next()).done) {
                var entry = step.value;

                if (entry) {
                  if (!isNode(entry[1])) {
                    return false;
                  }
                }
              }
            }
          } else {
            return false;
          }

          return true;

        default:
          return false;
      }
    }

    function isSymbol(propType, propValue) {
      // Native Symbol.
      if (propType === 'symbol') {
        return true;
      } // falsy value can't be a Symbol


      if (!propValue) {
        return false;
      } // 19.4.3.5 Symbol.prototype[@@toStringTag] === 'Symbol'


      if (propValue['@@toStringTag'] === 'Symbol') {
        return true;
      } // Fallback for non-spec compliant Symbols which are polyfilled.


      if (typeof Symbol === 'function' && propValue instanceof Symbol) {
        return true;
      }

      return false;
    } // Equivalent of `typeof` but with special handling for array and regexp.


    function getPropType(propValue) {
      var propType = typeof propValue;

      if (Array.isArray(propValue)) {
        return 'array';
      }

      if (propValue instanceof RegExp) {
        // Old webkits (at least until Android 4.0) return 'function' rather than
        // 'object' for typeof a RegExp. We'll normalize this here so that /bla/
        // passes PropTypes.object.
        return 'object';
      }

      if (isSymbol(propType, propValue)) {
        return 'symbol';
      }

      return propType;
    } // This handles more types than `getPropType`. Only used for error messages.
    // See `createPrimitiveTypeChecker`.


    function getPreciseType(propValue) {
      if (typeof propValue === 'undefined' || propValue === null) {
        return '' + propValue;
      }

      var propType = getPropType(propValue);

      if (propType === 'object') {
        if (propValue instanceof Date) {
          return 'date';
        } else if (propValue instanceof RegExp) {
          return 'regexp';
        }
      }

      return propType;
    } // Returns a string that is postfixed to a warning about an invalid type.
    // For example, "undefined" or "of type array"


    function getPostfixForTypeWarning(value) {
      var type = getPreciseType(value);

      switch (type) {
        case 'array':
        case 'object':
          return 'an ' + type;

        case 'boolean':
        case 'date':
        case 'regexp':
          return 'a ' + type;

        default:
          return type;
      }
    } // Returns class name of the object, if any.


    function getClassName(propValue) {
      if (!propValue.constructor || !propValue.constructor.name) {
        return ANONYMOUS;
      }

      return propValue.constructor.name;
    }

    ReactPropTypes.checkPropTypes = checkPropTypes_1;
    ReactPropTypes.resetWarningCache = checkPropTypes_1.resetWarningCache;
    ReactPropTypes.PropTypes = ReactPropTypes;
    return ReactPropTypes;
  };

  /**
   * Copyright (c) 2013-present, Facebook, Inc.
   *
   * This source code is licensed under the MIT license found in the
   * LICENSE file in the root directory of this source tree.
   */
  var propTypes = createCommonjsModule(function (module) {
    {
      var ReactIs = reactIs; // By explicitly using `prop-types` you are opting into new development behavior.
      // http://fb.me/prop-types-in-prod

      var throwOnDirectAccess = true;
      module.exports = factoryWithTypeCheckers(ReactIs.isElement, throwOnDirectAccess);
    }
  });

  /** @license React v17.0.1
   * react-is.production.min.js
   *
   * Copyright (c) Facebook, Inc. and its affiliates.
   *
   * This source code is licensed under the MIT license found in the
   * LICENSE file in the root directory of this source tree.
   */

  if ("function" === typeof Symbol && Symbol.for) {
    var x = Symbol.for;
    x("react.element");
    x("react.portal");
    x("react.fragment");
    x("react.strict_mode");
    x("react.profiler");
    x("react.provider");
    x("react.context");
    x("react.forward_ref");
    x("react.suspense");
    x("react.suspense_list");
    x("react.memo");
    x("react.lazy");
    x("react.block");
    x("react.server.block");
    x("react.fundamental");
    x("react.debug_trace_mode");
    x("react.legacy_hidden");
  }

  /** @license React v17.0.1
   * react-is.development.js
   *
   * Copyright (c) Facebook, Inc. and its affiliates.
   *
   * This source code is licensed under the MIT license found in the
   * LICENSE file in the root directory of this source tree.
   */
  var reactIs_development$1 = createCommonjsModule(function (module, exports) {

    {
      (function () {
        // When adding new symbols to this file,
        // Please consider also adding to 'react-devtools-shared/src/backend/ReactSymbols'
        // The Symbol used to tag the ReactElement-like types. If there is no native Symbol
        // nor polyfill, then a plain number is used for performance.

        var REACT_ELEMENT_TYPE = 0xeac7;
        var REACT_PORTAL_TYPE = 0xeaca;
        var REACT_FRAGMENT_TYPE = 0xeacb;
        var REACT_STRICT_MODE_TYPE = 0xeacc;
        var REACT_PROFILER_TYPE = 0xead2;
        var REACT_PROVIDER_TYPE = 0xeacd;
        var REACT_CONTEXT_TYPE = 0xeace;
        var REACT_FORWARD_REF_TYPE = 0xead0;
        var REACT_SUSPENSE_TYPE = 0xead1;
        var REACT_SUSPENSE_LIST_TYPE = 0xead8;
        var REACT_MEMO_TYPE = 0xead3;
        var REACT_LAZY_TYPE = 0xead4;
        var REACT_BLOCK_TYPE = 0xead9;
        var REACT_SERVER_BLOCK_TYPE = 0xeada;
        var REACT_FUNDAMENTAL_TYPE = 0xead5;
        var REACT_DEBUG_TRACING_MODE_TYPE = 0xeae1;
        var REACT_LEGACY_HIDDEN_TYPE = 0xeae3;

        if (typeof Symbol === 'function' && Symbol.for) {
          var symbolFor = Symbol.for;
          REACT_ELEMENT_TYPE = symbolFor('react.element');
          REACT_PORTAL_TYPE = symbolFor('react.portal');
          REACT_FRAGMENT_TYPE = symbolFor('react.fragment');
          REACT_STRICT_MODE_TYPE = symbolFor('react.strict_mode');
          REACT_PROFILER_TYPE = symbolFor('react.profiler');
          REACT_PROVIDER_TYPE = symbolFor('react.provider');
          REACT_CONTEXT_TYPE = symbolFor('react.context');
          REACT_FORWARD_REF_TYPE = symbolFor('react.forward_ref');
          REACT_SUSPENSE_TYPE = symbolFor('react.suspense');
          REACT_SUSPENSE_LIST_TYPE = symbolFor('react.suspense_list');
          REACT_MEMO_TYPE = symbolFor('react.memo');
          REACT_LAZY_TYPE = symbolFor('react.lazy');
          REACT_BLOCK_TYPE = symbolFor('react.block');
          REACT_SERVER_BLOCK_TYPE = symbolFor('react.server.block');
          REACT_FUNDAMENTAL_TYPE = symbolFor('react.fundamental');
          symbolFor('react.scope');
          symbolFor('react.opaque.id');
          REACT_DEBUG_TRACING_MODE_TYPE = symbolFor('react.debug_trace_mode');
          symbolFor('react.offscreen');
          REACT_LEGACY_HIDDEN_TYPE = symbolFor('react.legacy_hidden');
        } // Filter certain DOM attributes (e.g. src, href) if their values are empty strings.


        var enableScopeAPI = false; // Experimental Create Event Handle API.

        function isValidElementType(type) {
          if (typeof type === 'string' || typeof type === 'function') {
            return true;
          } // Note: typeof might be other than 'symbol' or 'number' (e.g. if it's a polyfill).


          if (type === REACT_FRAGMENT_TYPE || type === REACT_PROFILER_TYPE || type === REACT_DEBUG_TRACING_MODE_TYPE || type === REACT_STRICT_MODE_TYPE || type === REACT_SUSPENSE_TYPE || type === REACT_SUSPENSE_LIST_TYPE || type === REACT_LEGACY_HIDDEN_TYPE || enableScopeAPI) {
            return true;
          }

          if (typeof type === 'object' && type !== null) {
            if (type.$$typeof === REACT_LAZY_TYPE || type.$$typeof === REACT_MEMO_TYPE || type.$$typeof === REACT_PROVIDER_TYPE || type.$$typeof === REACT_CONTEXT_TYPE || type.$$typeof === REACT_FORWARD_REF_TYPE || type.$$typeof === REACT_FUNDAMENTAL_TYPE || type.$$typeof === REACT_BLOCK_TYPE || type[0] === REACT_SERVER_BLOCK_TYPE) {
              return true;
            }
          }

          return false;
        }

        function typeOf(object) {
          if (typeof object === 'object' && object !== null) {
            var $$typeof = object.$$typeof;

            switch ($$typeof) {
              case REACT_ELEMENT_TYPE:
                var type = object.type;

                switch (type) {
                  case REACT_FRAGMENT_TYPE:
                  case REACT_PROFILER_TYPE:
                  case REACT_STRICT_MODE_TYPE:
                  case REACT_SUSPENSE_TYPE:
                  case REACT_SUSPENSE_LIST_TYPE:
                    return type;

                  default:
                    var $$typeofType = type && type.$$typeof;

                    switch ($$typeofType) {
                      case REACT_CONTEXT_TYPE:
                      case REACT_FORWARD_REF_TYPE:
                      case REACT_LAZY_TYPE:
                      case REACT_MEMO_TYPE:
                      case REACT_PROVIDER_TYPE:
                        return $$typeofType;

                      default:
                        return $$typeof;
                    }

                }

              case REACT_PORTAL_TYPE:
                return $$typeof;
            }
          }

          return undefined;
        }

        var ContextConsumer = REACT_CONTEXT_TYPE;
        var ContextProvider = REACT_PROVIDER_TYPE;
        var Element = REACT_ELEMENT_TYPE;
        var ForwardRef = REACT_FORWARD_REF_TYPE;
        var Fragment = REACT_FRAGMENT_TYPE;
        var Lazy = REACT_LAZY_TYPE;
        var Memo = REACT_MEMO_TYPE;
        var Portal = REACT_PORTAL_TYPE;
        var Profiler = REACT_PROFILER_TYPE;
        var StrictMode = REACT_STRICT_MODE_TYPE;
        var Suspense = REACT_SUSPENSE_TYPE;
        var hasWarnedAboutDeprecatedIsAsyncMode = false;
        var hasWarnedAboutDeprecatedIsConcurrentMode = false; // AsyncMode should be deprecated

        function isAsyncMode(object) {
          {
            if (!hasWarnedAboutDeprecatedIsAsyncMode) {
              hasWarnedAboutDeprecatedIsAsyncMode = true; // Using console['warn'] to evade Babel and ESLint

              console['warn']('The ReactIs.isAsyncMode() alias has been deprecated, ' + 'and will be removed in React 18+.');
            }
          }
          return false;
        }

        function isConcurrentMode(object) {
          {
            if (!hasWarnedAboutDeprecatedIsConcurrentMode) {
              hasWarnedAboutDeprecatedIsConcurrentMode = true; // Using console['warn'] to evade Babel and ESLint

              console['warn']('The ReactIs.isConcurrentMode() alias has been deprecated, ' + 'and will be removed in React 18+.');
            }
          }
          return false;
        }

        function isContextConsumer(object) {
          return typeOf(object) === REACT_CONTEXT_TYPE;
        }

        function isContextProvider(object) {
          return typeOf(object) === REACT_PROVIDER_TYPE;
        }

        function isElement(object) {
          return typeof object === 'object' && object !== null && object.$$typeof === REACT_ELEMENT_TYPE;
        }

        function isForwardRef(object) {
          return typeOf(object) === REACT_FORWARD_REF_TYPE;
        }

        function isFragment(object) {
          return typeOf(object) === REACT_FRAGMENT_TYPE;
        }

        function isLazy(object) {
          return typeOf(object) === REACT_LAZY_TYPE;
        }

        function isMemo(object) {
          return typeOf(object) === REACT_MEMO_TYPE;
        }

        function isPortal(object) {
          return typeOf(object) === REACT_PORTAL_TYPE;
        }

        function isProfiler(object) {
          return typeOf(object) === REACT_PROFILER_TYPE;
        }

        function isStrictMode(object) {
          return typeOf(object) === REACT_STRICT_MODE_TYPE;
        }

        function isSuspense(object) {
          return typeOf(object) === REACT_SUSPENSE_TYPE;
        }

        exports.ContextConsumer = ContextConsumer;
        exports.ContextProvider = ContextProvider;
        exports.Element = Element;
        exports.ForwardRef = ForwardRef;
        exports.Fragment = Fragment;
        exports.Lazy = Lazy;
        exports.Memo = Memo;
        exports.Portal = Portal;
        exports.Profiler = Profiler;
        exports.StrictMode = StrictMode;
        exports.Suspense = Suspense;
        exports.isAsyncMode = isAsyncMode;
        exports.isConcurrentMode = isConcurrentMode;
        exports.isContextConsumer = isContextConsumer;
        exports.isContextProvider = isContextProvider;
        exports.isElement = isElement;
        exports.isForwardRef = isForwardRef;
        exports.isFragment = isFragment;
        exports.isLazy = isLazy;
        exports.isMemo = isMemo;
        exports.isPortal = isPortal;
        exports.isProfiler = isProfiler;
        exports.isStrictMode = isStrictMode;
        exports.isSuspense = isSuspense;
        exports.isValidElementType = isValidElementType;
        exports.typeOf = typeOf;
      })();
    }
  });

  var reactIs$1 = createCommonjsModule(function (module) {

    {
      module.exports = reactIs_development$1;
    }
  });

  function t(t) {
    return null != t && "object" == typeof t && 1 === t.nodeType;
  }

  function e(t, e) {
    return (!e || "hidden" !== t) && "visible" !== t && "clip" !== t;
  }

  function n(t, n) {
    if (t.clientHeight < t.scrollHeight || t.clientWidth < t.scrollWidth) {
      var r = getComputedStyle(t, null);
      return e(r.overflowY, n) || e(r.overflowX, n) || function (t) {
        var e = function (t) {
          if (!t.ownerDocument || !t.ownerDocument.defaultView) return null;

          try {
            return t.ownerDocument.defaultView.frameElement;
          } catch (t) {
            return null;
          }
        }(t);

        return !!e && (e.clientHeight < t.scrollHeight || e.clientWidth < t.scrollWidth);
      }(t);
    }

    return !1;
  }

  function r(t, e, n, r, i, o, l, d) {
    return o < t && l > e || o > t && l < e ? 0 : o <= t && d <= n || l >= e && d >= n ? o - t - r : l > e && d < n || o < t && d > n ? l - e + i : 0;
  }

  function computeScrollIntoView (e, i) {
    var o = window,
        l = i.scrollMode,
        d = i.block,
        u = i.inline,
        h = i.boundary,
        a = i.skipOverflowHiddenElements,
        c = "function" == typeof h ? h : function (t) {
      return t !== h;
    };
    if (!t(e)) throw new TypeError("Invalid target");

    for (var f = document.scrollingElement || document.documentElement, s = [], p = e; t(p) && c(p);) {
      if ((p = p.parentNode) === f) {
        s.push(p);
        break;
      }

      p === document.body && n(p) && !n(document.documentElement) || n(p, a) && s.push(p);
    }

    for (var g = o.visualViewport ? o.visualViewport.width : innerWidth, m = o.visualViewport ? o.visualViewport.height : innerHeight, w = window.scrollX || pageXOffset, v = window.scrollY || pageYOffset, W = e.getBoundingClientRect(), b = W.height, H = W.width, y = W.top, M = W.right, E = W.bottom, V = W.left, x = "start" === d || "nearest" === d ? y : "end" === d ? E : y + b / 2, I = "center" === u ? V + H / 2 : "end" === u ? M : V, C = [], T = 0; T < s.length; T++) {
      var k = s[T],
          B = k.getBoundingClientRect(),
          D = B.height,
          O = B.width,
          R = B.top,
          X = B.right,
          Y = B.bottom,
          L = B.left;
      if ("if-needed" === l && y >= 0 && V >= 0 && E <= m && M <= g && y >= R && E <= Y && V >= L && M <= X) return C;
      var S = getComputedStyle(k),
          j = parseInt(S.borderLeftWidth, 10),
          N = parseInt(S.borderTopWidth, 10),
          q = parseInt(S.borderRightWidth, 10),
          z = parseInt(S.borderBottomWidth, 10),
          A = 0,
          F = 0,
          G = "offsetWidth" in k ? k.offsetWidth - k.clientWidth - j - q : 0,
          J = "offsetHeight" in k ? k.offsetHeight - k.clientHeight - N - z : 0;
      if (f === k) A = "start" === d ? x : "end" === d ? x - m : "nearest" === d ? r(v, v + m, m, N, z, v + x, v + x + b, b) : x - m / 2, F = "start" === u ? I : "center" === u ? I - g / 2 : "end" === u ? I - g : r(w, w + g, g, j, q, w + I, w + I + H, H), A = Math.max(0, A + v), F = Math.max(0, F + w);else {
        A = "start" === d ? x - R - N : "end" === d ? x - Y + z + J : "nearest" === d ? r(R, Y, D, N, z + J, x, x + b, b) : x - (R + D / 2) + J / 2, F = "start" === u ? I - L - j : "center" === u ? I - (L + O / 2) + G / 2 : "end" === u ? I - X + q + G : r(L, X, O, j, q + G, I, I + H, H);
        var K = k.scrollLeft,
            P = k.scrollTop;
        x += P - (A = Math.max(0, Math.min(P + A, k.scrollHeight - D + J))), I += K - (F = Math.max(0, Math.min(K + F, k.scrollWidth - O + G)));
      }
      C.push({
        el: k,
        top: A,
        left: F
      });
    }

    return C;
  }

  var idCounter = 0;
  /**
   * Accepts a parameter and returns it if it's a function
   * or a noop function if it's not. This allows us to
   * accept a callback, but not worry about it if it's not
   * passed.
   * @param {Function} cb the callback
   * @return {Function} a function
   */

  function cbToCb(cb) {
    return typeof cb === 'function' ? cb : noop;
  }

  function noop() {}
  /**
   * Scroll node into view if necessary
   * @param {HTMLElement} node the element that should scroll into view
   * @param {HTMLElement} menuNode the menu element of the component
   */


  function scrollIntoView(node, menuNode) {
    if (!node) {
      return;
    }

    var actions = computeScrollIntoView(node, {
      boundary: menuNode,
      block: 'nearest',
      scrollMode: 'if-needed'
    });
    actions.forEach(function (_ref) {
      var el = _ref.el,
          top = _ref.top,
          left = _ref.left;
      el.scrollTop = top;
      el.scrollLeft = left;
    });
  }
  /**
   * @param {HTMLElement} parent the parent node
   * @param {HTMLElement} child the child node
   * @return {Boolean} whether the parent is the child or the child is in the parent
   */


  function isOrContainsNode(parent, child) {
    return parent === child || child instanceof Node && parent.contains && parent.contains(child);
  }
  /**
   * Simple debounce implementation. Will call the given
   * function once after the time given has passed since
   * it was last called.
   * @param {Function} fn the function to call after the time
   * @param {Number} time the time to wait
   * @return {Function} the debounced function
   */


  function debounce(fn, time) {
    var timeoutId;

    function cancel() {
      if (timeoutId) {
        clearTimeout(timeoutId);
      }
    }

    function wrapper() {
      for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
        args[_key] = arguments[_key];
      }

      cancel();
      timeoutId = setTimeout(function () {
        timeoutId = null;
        fn.apply(void 0, args);
      }, time);
    }

    wrapper.cancel = cancel;
    return wrapper;
  }
  /**
   * This is intended to be used to compose event handlers.
   * They are executed in order until one of them sets
   * `event.preventDownshiftDefault = true`.
   * @param {...Function} fns the event handler functions
   * @return {Function} the event handler to add to an element
   */


  function callAllEventHandlers() {
    for (var _len2 = arguments.length, fns = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
      fns[_key2] = arguments[_key2];
    }

    return function (event) {
      for (var _len3 = arguments.length, args = new Array(_len3 > 1 ? _len3 - 1 : 0), _key3 = 1; _key3 < _len3; _key3++) {
        args[_key3 - 1] = arguments[_key3];
      }

      return fns.some(function (fn) {
        if (fn) {
          fn.apply(void 0, [event].concat(args));
        }

        return event.preventDownshiftDefault || event.hasOwnProperty('nativeEvent') && event.nativeEvent.preventDownshiftDefault;
      });
    };
  }

  function handleRefs() {
    for (var _len4 = arguments.length, refs = new Array(_len4), _key4 = 0; _key4 < _len4; _key4++) {
      refs[_key4] = arguments[_key4];
    }

    return function (node) {
      refs.forEach(function (ref) {
        if (typeof ref === 'function') {
          ref(node);
        } else if (ref) {
          ref.current = node;
        }
      });
    };
  }
  /**
   * This generates a unique ID for an instance of Downshift
   * @return {String} the unique ID
   */


  function generateId() {
    return String(idCounter++);
  }
  /**
   * Resets idCounter to 0. Used for SSR.
   */


  function resetIdCounter() {
    idCounter = 0;
  }
  /**
   * Default implementation for status message. Only added when menu is open.
   * Will specift if there are results in the list, and if so, how many,
   * and what keys are relevant.
   *
   * @param {Object} param the downshift state and other relevant properties
   * @return {String} the a11y status message
   */


  function getA11yStatusMessage(_ref2) {
    var isOpen = _ref2.isOpen,
        resultCount = _ref2.resultCount,
        previousResultCount = _ref2.previousResultCount;

    if (!isOpen) {
      return '';
    }

    if (!resultCount) {
      return 'No results are available.';
    }

    if (resultCount !== previousResultCount) {
      return resultCount + " result" + (resultCount === 1 ? ' is' : 's are') + " available, use up and down arrow keys to navigate. Press Enter key to select.";
    }

    return '';
  }
  /**
   * Takes an argument and if it's an array, returns the first item in the array
   * otherwise returns the argument
   * @param {*} arg the maybe-array
   * @param {*} defaultValue the value if arg is falsey not defined
   * @return {*} the arg or it's first item
   */


  function unwrapArray(arg, defaultValue) {
    arg = Array.isArray(arg) ?
    /* istanbul ignore next (preact) */
    arg[0] : arg;

    if (!arg && defaultValue) {
      return defaultValue;
    } else {
      return arg;
    }
  }
  /**
   * @param {Object} element (P)react element
   * @return {Boolean} whether it's a DOM element
   */


  function isDOMElement(element) {
    // then we assume this is react
    return typeof element.type === 'string';
  }
  /**
   * @param {Object} element (P)react element
   * @return {Object} the props
   */


  function getElementProps(element) {
    return element.props;
  }
  /**
   * Throws a helpful error message for required properties. Useful
   * to be used as a default in destructuring or object params.
   * @param {String} fnName the function name
   * @param {String} propName the prop name
   */


  function requiredProp(fnName, propName) {
    // eslint-disable-next-line no-console
    console.error("The property \"" + propName + "\" is required in \"" + fnName + "\"");
  }

  var stateKeys = ['highlightedIndex', 'inputValue', 'isOpen', 'selectedItem', 'type'];
  /**
   * @param {Object} state the state object
   * @return {Object} state that is relevant to downshift
   */

  function pickState(state) {
    if (state === void 0) {
      state = {};
    }

    var result = {};
    stateKeys.forEach(function (k) {
      if (state.hasOwnProperty(k)) {
        result[k] = state[k];
      }
    });
    return result;
  }
  /**
   * This will perform a shallow merge of the given state object
   * with the state coming from props
   * (for the controlled component scenario)
   * This is used in state updater functions so they're referencing
   * the right state regardless of where it comes from.
   *
   * @param {Object} state The state of the component/hook.
   * @param {Object} props The props that may contain controlled values.
   * @returns {Object} The merged controlled state.
   */


  function getState(state, props) {
    return Object.keys(state).reduce(function (prevState, key) {
      prevState[key] = isControlledProp(props, key) ? props[key] : state[key];
      return prevState;
    }, {});
  }
  /**
   * This determines whether a prop is a "controlled prop" meaning it is
   * state which is controlled by the outside of this component rather
   * than within this component.
   *
   * @param {Object} props The props that may contain controlled values.
   * @param {String} key the key to check
   * @return {Boolean} whether it is a controlled controlled prop
   */


  function isControlledProp(props, key) {
    return props[key] !== undefined;
  }
  /**
   * Normalizes the 'key' property of a KeyboardEvent in IE/Edge
   * @param {Object} event a keyboardEvent object
   * @return {String} keyboard key
   */


  function normalizeArrowKey(event) {
    var key = event.key,
        keyCode = event.keyCode;
    /* istanbul ignore next (ie) */

    if (keyCode >= 37 && keyCode <= 40 && key.indexOf('Arrow') !== 0) {
      return "Arrow" + key;
    }

    return key;
  }
  /**
   * Simple check if the value passed is object literal
   * @param {*} obj any things
   * @return {Boolean} whether it's object literal
   */


  function isPlainObject(obj) {
    return Object.prototype.toString.call(obj) === '[object Object]';
  }
  /**
   * Returns the new index in the list, in a circular way. If next value is out of bonds from the total,
   * it will wrap to either 0 or itemCount - 1.
   *
   * @param {number} moveAmount Number of positions to move. Negative to move backwards, positive forwards.
   * @param {number} baseIndex The initial position to move from.
   * @param {number} itemCount The total number of items.
   * @param {Function} getItemNodeFromIndex Used to check if item is disabled.
   * @param {boolean} circular Specify if navigation is circular. Default is true.
   * @returns {number} The new index after the move.
   */


  function getNextWrappingIndex(moveAmount, baseIndex, itemCount, getItemNodeFromIndex, circular) {
    if (circular === void 0) {
      circular = true;
    }

    if (itemCount === 0) {
      return -1;
    }

    var itemsLastIndex = itemCount - 1;

    if (typeof baseIndex !== 'number' || baseIndex < 0 || baseIndex >= itemCount) {
      baseIndex = moveAmount > 0 ? -1 : itemsLastIndex + 1;
    }

    var newIndex = baseIndex + moveAmount;

    if (newIndex < 0) {
      newIndex = circular ? itemsLastIndex : 0;
    } else if (newIndex > itemsLastIndex) {
      newIndex = circular ? 0 : itemsLastIndex;
    }

    var nonDisabledNewIndex = getNextNonDisabledIndex(moveAmount, newIndex, itemCount, getItemNodeFromIndex, circular);

    if (nonDisabledNewIndex === -1) {
      return baseIndex >= itemCount ? -1 : baseIndex;
    }

    return nonDisabledNewIndex;
  }
  /**
   * Returns the next index in the list of an item that is not disabled.
   *
   * @param {number} moveAmount Number of positions to move. Negative to move backwards, positive forwards.
   * @param {number} baseIndex The initial position to move from.
   * @param {number} itemCount The total number of items.
   * @param {Function} getItemNodeFromIndex Used to check if item is disabled.
   * @param {boolean} circular Specify if navigation is circular. Default is true.
   * @returns {number} The new index. Returns baseIndex if item is not disabled. Returns next non-disabled item otherwise. If no non-disabled found it will return -1.
   */


  function getNextNonDisabledIndex(moveAmount, baseIndex, itemCount, getItemNodeFromIndex, circular) {
    var currentElementNode = getItemNodeFromIndex(baseIndex);

    if (!currentElementNode || !currentElementNode.hasAttribute('disabled')) {
      return baseIndex;
    }

    if (moveAmount > 0) {
      for (var index = baseIndex + 1; index < itemCount; index++) {
        if (!getItemNodeFromIndex(index).hasAttribute('disabled')) {
          return index;
        }
      }
    } else {
      for (var _index = baseIndex - 1; _index >= 0; _index--) {
        if (!getItemNodeFromIndex(_index).hasAttribute('disabled')) {
          return _index;
        }
      }
    }

    if (circular) {
      return moveAmount > 0 ? getNextNonDisabledIndex(1, 0, itemCount, getItemNodeFromIndex, false) : getNextNonDisabledIndex(-1, itemCount - 1, itemCount, getItemNodeFromIndex, false);
    }

    return -1;
  }
  /**
   * Checks if event target is within the downshift elements.
   *
   * @param {EventTarget} target Target to check.
   * @param {HTMLElement[]} downshiftElements The elements that form downshift (list, toggle button etc).
   * @param {Document} document The document.
   * @param {boolean} checkActiveElement Whether to also check activeElement.
   *
   * @returns {boolean} Whether or not the target is within downshift elements.
   */


  function targetWithinDownshift(target, downshiftElements, document, checkActiveElement) {
    if (checkActiveElement === void 0) {
      checkActiveElement = true;
    }

    return downshiftElements.some(function (contextNode) {
      return contextNode && (isOrContainsNode(contextNode, target) || checkActiveElement && isOrContainsNode(contextNode, document.activeElement));
    });
  } // eslint-disable-next-line import/no-mutable-exports


  var validateControlledUnchanged = noop;
  /* istanbul ignore next */

  validateControlledUnchanged = function (state, prevProps, nextProps) {
    var warningDescription = "This prop should not switch from controlled to uncontrolled (or vice versa). Decide between using a controlled or uncontrolled Downshift element for the lifetime of the component. More info: https://github.com/downshift-js/downshift#control-props";
    Object.keys(state).forEach(function (propKey) {
      if (prevProps[propKey] !== undefined && nextProps[propKey] === undefined) {
        // eslint-disable-next-line no-console
        console.error("downshift: A component has changed the controlled prop \"" + propKey + "\" to be uncontrolled. " + warningDescription);
      } else if (prevProps[propKey] === undefined && nextProps[propKey] !== undefined) {
        // eslint-disable-next-line no-console
        console.error("downshift: A component has changed the uncontrolled prop \"" + propKey + "\" to be controlled. " + warningDescription);
      }
    });
  };

  var cleanupStatus = debounce(function (documentProp) {
    getStatusDiv(documentProp).textContent = '';
  }, 500);
  /**
   * @param {String} status the status message
   * @param {Object} documentProp document passed by the user.
   */

  function setStatus(status, documentProp) {
    var div = getStatusDiv(documentProp);

    if (!status) {
      return;
    }

    div.textContent = status;
    cleanupStatus(documentProp);
  }
  /**
   * Get the status node or create it if it does not already exist.
   * @param {Object} documentProp document passed by the user.
   * @return {HTMLElement} the status node.
   */


  function getStatusDiv(documentProp) {
    if (documentProp === void 0) {
      documentProp = document;
    }

    var statusDiv = documentProp.getElementById('a11y-status-message');

    if (statusDiv) {
      return statusDiv;
    }

    statusDiv = documentProp.createElement('div');
    statusDiv.setAttribute('id', 'a11y-status-message');
    statusDiv.setAttribute('role', 'status');
    statusDiv.setAttribute('aria-live', 'polite');
    statusDiv.setAttribute('aria-relevant', 'additions text');
    Object.assign(statusDiv.style, {
      border: '0',
      clip: 'rect(0 0 0 0)',
      height: '1px',
      margin: '-1px',
      overflow: 'hidden',
      padding: '0',
      position: 'absolute',
      width: '1px'
    });
    documentProp.body.appendChild(statusDiv);
    return statusDiv;
  }

  var unknown = '__autocomplete_unknown__';
  var mouseUp = '__autocomplete_mouseup__';
  var itemMouseEnter = '__autocomplete_item_mouseenter__';
  var keyDownArrowUp = '__autocomplete_keydown_arrow_up__';
  var keyDownArrowDown = '__autocomplete_keydown_arrow_down__';
  var keyDownEscape = '__autocomplete_keydown_escape__';
  var keyDownEnter = '__autocomplete_keydown_enter__';
  var keyDownHome = '__autocomplete_keydown_home__';
  var keyDownEnd = '__autocomplete_keydown_end__';
  var clickItem = '__autocomplete_click_item__';
  var blurInput = '__autocomplete_blur_input__';
  var changeInput = '__autocomplete_change_input__';
  var keyDownSpaceButton = '__autocomplete_keydown_space_button__';
  var clickButton = '__autocomplete_click_button__';
  var blurButton = '__autocomplete_blur_button__';
  var controlledPropUpdatedSelectedItem = '__autocomplete_controlled_prop_updated_selected_item__';
  var touchEnd = '__autocomplete_touchend__';

  var stateChangeTypes = /*#__PURE__*/Object.freeze({
    __proto__: null,
    unknown: unknown,
    mouseUp: mouseUp,
    itemMouseEnter: itemMouseEnter,
    keyDownArrowUp: keyDownArrowUp,
    keyDownArrowDown: keyDownArrowDown,
    keyDownEscape: keyDownEscape,
    keyDownEnter: keyDownEnter,
    keyDownHome: keyDownHome,
    keyDownEnd: keyDownEnd,
    clickItem: clickItem,
    blurInput: blurInput,
    changeInput: changeInput,
    keyDownSpaceButton: keyDownSpaceButton,
    clickButton: clickButton,
    blurButton: blurButton,
    controlledPropUpdatedSelectedItem: controlledPropUpdatedSelectedItem,
    touchEnd: touchEnd
  });

  var Downshift = /*#__PURE__*/function () {
    var Downshift = /*#__PURE__*/function (_Component) {
      _inheritsLoose(Downshift, _Component);

      function Downshift(_props) {
        var _this = _Component.call(this, _props) || this;

        _this.id = _this.props.id || "downshift-" + generateId();
        _this.menuId = _this.props.menuId || _this.id + "-menu";
        _this.labelId = _this.props.labelId || _this.id + "-label";
        _this.inputId = _this.props.inputId || _this.id + "-input";

        _this.getItemId = _this.props.getItemId || function (index) {
          return _this.id + "-item-" + index;
        };

        _this.input = null;
        _this.items = [];
        _this.itemCount = null;
        _this.previousResultCount = 0;
        _this.timeoutIds = [];

        _this.internalSetTimeout = function (fn, time) {
          var id = setTimeout(function () {
            _this.timeoutIds = _this.timeoutIds.filter(function (i) {
              return i !== id;
            });
            fn();
          }, time);

          _this.timeoutIds.push(id);
        };

        _this.setItemCount = function (count) {
          _this.itemCount = count;
        };

        _this.unsetItemCount = function () {
          _this.itemCount = null;
        };

        _this.setHighlightedIndex = function (highlightedIndex, otherStateToSet) {
          if (highlightedIndex === void 0) {
            highlightedIndex = _this.props.defaultHighlightedIndex;
          }

          if (otherStateToSet === void 0) {
            otherStateToSet = {};
          }

          otherStateToSet = pickState(otherStateToSet);

          _this.internalSetState(_extends({
            highlightedIndex: highlightedIndex
          }, otherStateToSet));
        };

        _this.clearSelection = function (cb) {
          _this.internalSetState({
            selectedItem: null,
            inputValue: '',
            highlightedIndex: _this.props.defaultHighlightedIndex,
            isOpen: _this.props.defaultIsOpen
          }, cb);
        };

        _this.selectItem = function (item, otherStateToSet, cb) {
          otherStateToSet = pickState(otherStateToSet);

          _this.internalSetState(_extends({
            isOpen: _this.props.defaultIsOpen,
            highlightedIndex: _this.props.defaultHighlightedIndex,
            selectedItem: item,
            inputValue: _this.props.itemToString(item)
          }, otherStateToSet), cb);
        };

        _this.selectItemAtIndex = function (itemIndex, otherStateToSet, cb) {
          var item = _this.items[itemIndex];

          if (item == null) {
            return;
          }

          _this.selectItem(item, otherStateToSet, cb);
        };

        _this.selectHighlightedItem = function (otherStateToSet, cb) {
          return _this.selectItemAtIndex(_this.getState().highlightedIndex, otherStateToSet, cb);
        };

        _this.internalSetState = function (stateToSet, cb) {
          var isItemSelected, onChangeArg;
          var onStateChangeArg = {};
          var isStateToSetFunction = typeof stateToSet === 'function'; // we want to call `onInputValueChange` before the `setState` call
          // so someone controlling the `inputValue` state gets notified of
          // the input change as soon as possible. This avoids issues with
          // preserving the cursor position.
          // See https://github.com/downshift-js/downshift/issues/217 for more info.

          if (!isStateToSetFunction && stateToSet.hasOwnProperty('inputValue')) {
            _this.props.onInputValueChange(stateToSet.inputValue, _extends({}, _this.getStateAndHelpers(), stateToSet));
          }

          return _this.setState(function (state) {
            state = _this.getState(state);
            var newStateToSet = isStateToSetFunction ? stateToSet(state) : stateToSet; // Your own function that could modify the state that will be set.

            newStateToSet = _this.props.stateReducer(state, newStateToSet); // checks if an item is selected, regardless of if it's different from
            // what was selected before
            // used to determine if onSelect and onChange callbacks should be called

            isItemSelected = newStateToSet.hasOwnProperty('selectedItem'); // this keeps track of the object we want to call with setState

            var nextState = {}; // this is just used to tell whether the state changed
            // and we're trying to update that state. OR if the selection has changed and we're
            // trying to update the selection

            if (isItemSelected && newStateToSet.selectedItem !== state.selectedItem) {
              onChangeArg = newStateToSet.selectedItem;
            }

            newStateToSet.type = newStateToSet.type || unknown;
            Object.keys(newStateToSet).forEach(function (key) {
              // onStateChangeArg should only have the state that is
              // actually changing
              if (state[key] !== newStateToSet[key]) {
                onStateChangeArg[key] = newStateToSet[key];
              } // the type is useful for the onStateChangeArg
              // but we don't actually want to set it in internal state.
              // this is an undocumented feature for now... Not all internalSetState
              // calls support it and I'm not certain we want them to yet.
              // But it enables users controlling the isOpen state to know when
              // the isOpen state changes due to mouseup events which is quite handy.


              if (key === 'type') {
                return;
              }

              newStateToSet[key]; // if it's coming from props, then we don't care to set it internally

              if (!isControlledProp(_this.props, key)) {
                nextState[key] = newStateToSet[key];
              }
            }); // if stateToSet is a function, then we weren't able to call onInputValueChange
            // earlier, so we'll call it now that we know what the inputValue state will be.

            if (isStateToSetFunction && newStateToSet.hasOwnProperty('inputValue')) {
              _this.props.onInputValueChange(newStateToSet.inputValue, _extends({}, _this.getStateAndHelpers(), newStateToSet));
            }

            return nextState;
          }, function () {
            // call the provided callback if it's a function
            cbToCb(cb)(); // only call the onStateChange and onChange callbacks if
            // we have relevant information to pass them.

            var hasMoreStateThanType = Object.keys(onStateChangeArg).length > 1;

            if (hasMoreStateThanType) {
              _this.props.onStateChange(onStateChangeArg, _this.getStateAndHelpers());
            }

            if (isItemSelected) {
              _this.props.onSelect(stateToSet.selectedItem, _this.getStateAndHelpers());
            }

            if (onChangeArg !== undefined) {
              _this.props.onChange(onChangeArg, _this.getStateAndHelpers());
            } // this is currently undocumented and therefore subject to change
            // We'll try to not break it, but just be warned.


            _this.props.onUserAction(onStateChangeArg, _this.getStateAndHelpers());
          });
        };

        _this.rootRef = function (node) {
          return _this._rootNode = node;
        };

        _this.getRootProps = function (_temp, _temp2) {
          var _extends2;

          var _ref = _temp === void 0 ? {} : _temp,
              _ref$refKey = _ref.refKey,
              refKey = _ref$refKey === void 0 ? 'ref' : _ref$refKey,
              ref = _ref.ref,
              rest = _objectWithoutPropertiesLoose(_ref, ["refKey", "ref"]);

          var _ref2 = _temp2 === void 0 ? {} : _temp2,
              _ref2$suppressRefErro = _ref2.suppressRefError,
              suppressRefError = _ref2$suppressRefErro === void 0 ? false : _ref2$suppressRefErro;

          // this is used in the render to know whether the user has called getRootProps.
          // It uses that to know whether to apply the props automatically
          _this.getRootProps.called = true;
          _this.getRootProps.refKey = refKey;
          _this.getRootProps.suppressRefError = suppressRefError;

          var _this$getState = _this.getState(),
              isOpen = _this$getState.isOpen;

          return _extends((_extends2 = {}, _extends2[refKey] = handleRefs(ref, _this.rootRef), _extends2.role = 'combobox', _extends2['aria-expanded'] = isOpen, _extends2['aria-haspopup'] = 'listbox', _extends2['aria-owns'] = isOpen ? _this.menuId : null, _extends2['aria-labelledby'] = _this.labelId, _extends2), rest);
        };

        _this.keyDownHandlers = {
          ArrowDown: function ArrowDown(event) {
            var _this2 = this;

            event.preventDefault();

            if (this.getState().isOpen) {
              var amount = event.shiftKey ? 5 : 1;
              this.moveHighlightedIndex(amount, {
                type: keyDownArrowDown
              });
            } else {
              this.internalSetState({
                isOpen: true,
                type: keyDownArrowDown
              }, function () {
                var itemCount = _this2.getItemCount();

                if (itemCount > 0) {
                  var _this2$getState = _this2.getState(),
                      highlightedIndex = _this2$getState.highlightedIndex;

                  var nextHighlightedIndex = getNextWrappingIndex(1, highlightedIndex, itemCount, function (index) {
                    return _this2.getItemNodeFromIndex(index);
                  });

                  _this2.setHighlightedIndex(nextHighlightedIndex, {
                    type: keyDownArrowDown
                  });
                }
              });
            }
          },
          ArrowUp: function ArrowUp(event) {
            var _this3 = this;

            event.preventDefault();

            if (this.getState().isOpen) {
              var amount = event.shiftKey ? -5 : -1;
              this.moveHighlightedIndex(amount, {
                type: keyDownArrowUp
              });
            } else {
              this.internalSetState({
                isOpen: true,
                type: keyDownArrowUp
              }, function () {
                var itemCount = _this3.getItemCount();

                if (itemCount > 0) {
                  var _this3$getState = _this3.getState(),
                      highlightedIndex = _this3$getState.highlightedIndex;

                  var nextHighlightedIndex = getNextWrappingIndex(-1, highlightedIndex, itemCount, function (index) {
                    return _this3.getItemNodeFromIndex(index);
                  });

                  _this3.setHighlightedIndex(nextHighlightedIndex, {
                    type: keyDownArrowUp
                  });
                }
              });
            }
          },
          Enter: function Enter(event) {
            if (event.which === 229) {
              return;
            }

            var _this$getState2 = this.getState(),
                isOpen = _this$getState2.isOpen,
                highlightedIndex = _this$getState2.highlightedIndex;

            if (isOpen && highlightedIndex != null) {
              event.preventDefault();
              var item = this.items[highlightedIndex];
              var itemNode = this.getItemNodeFromIndex(highlightedIndex);

              if (item == null || itemNode && itemNode.hasAttribute('disabled')) {
                return;
              }

              this.selectHighlightedItem({
                type: keyDownEnter
              });
            }
          },
          Escape: function Escape(event) {
            event.preventDefault();
            this.reset(_extends({
              type: keyDownEscape
            }, !this.state.isOpen && {
              selectedItem: null,
              inputValue: ''
            }));
          }
        };
        _this.buttonKeyDownHandlers = _extends({}, _this.keyDownHandlers, {
          ' ': function _(event) {
            event.preventDefault();
            this.toggleMenu({
              type: keyDownSpaceButton
            });
          }
        });
        _this.inputKeyDownHandlers = _extends({}, _this.keyDownHandlers, {
          Home: function Home(event) {
            var _this4 = this;

            event.preventDefault();
            var itemCount = this.getItemCount();

            var _this$getState3 = this.getState(),
                isOpen = _this$getState3.isOpen;

            if (itemCount <= 0 || !isOpen) {
              return;
            } // get next non-disabled starting downwards from 0 if that's disabled.


            var newHighlightedIndex = getNextNonDisabledIndex(1, 0, itemCount, function (index) {
              return _this4.getItemNodeFromIndex(index);
            }, false);
            this.setHighlightedIndex(newHighlightedIndex, {
              type: keyDownHome
            });
          },
          End: function End(event) {
            var _this5 = this;

            event.preventDefault();
            var itemCount = this.getItemCount();

            var _this$getState4 = this.getState(),
                isOpen = _this$getState4.isOpen;

            if (itemCount <= 0 || !isOpen) {
              return;
            } // get next non-disabled starting upwards from last index if that's disabled.


            var newHighlightedIndex = getNextNonDisabledIndex(-1, itemCount - 1, itemCount, function (index) {
              return _this5.getItemNodeFromIndex(index);
            }, false);
            this.setHighlightedIndex(newHighlightedIndex, {
              type: keyDownEnd
            });
          }
        });

        _this.getToggleButtonProps = function (_temp3) {
          var _ref3 = _temp3 === void 0 ? {} : _temp3,
              onClick = _ref3.onClick,
              onPress = _ref3.onPress,
              onKeyDown = _ref3.onKeyDown,
              onKeyUp = _ref3.onKeyUp,
              onBlur = _ref3.onBlur,
              rest = _objectWithoutPropertiesLoose(_ref3, ["onClick", "onPress", "onKeyDown", "onKeyUp", "onBlur"]);

          var _this$getState5 = _this.getState(),
              isOpen = _this$getState5.isOpen;

          var enabledEventHandlers = {
            onClick: callAllEventHandlers(onClick, _this.buttonHandleClick),
            onKeyDown: callAllEventHandlers(onKeyDown, _this.buttonHandleKeyDown),
            onKeyUp: callAllEventHandlers(onKeyUp, _this.buttonHandleKeyUp),
            onBlur: callAllEventHandlers(onBlur, _this.buttonHandleBlur)
          };
          var eventHandlers = rest.disabled ? {} : enabledEventHandlers;
          return _extends({
            type: 'button',
            role: 'button',
            'aria-label': isOpen ? 'close menu' : 'open menu',
            'aria-haspopup': true,
            'data-toggle': true
          }, eventHandlers, rest);
        };

        _this.buttonHandleKeyUp = function (event) {
          // Prevent click event from emitting in Firefox
          event.preventDefault();
        };

        _this.buttonHandleKeyDown = function (event) {
          var key = normalizeArrowKey(event);

          if (_this.buttonKeyDownHandlers[key]) {
            _this.buttonKeyDownHandlers[key].call(_assertThisInitialized(_this), event);
          }
        };

        _this.buttonHandleClick = function (event) {
          event.preventDefault(); // handle odd case for Safari and Firefox which
          // don't give the button the focus properly.

          /* istanbul ignore if (can't reasonably test this) */

          if ( _this.props.environment.document.activeElement === _this.props.environment.document.body) {
            event.target.focus();
          } // to simplify testing components that use downshift, we'll not wrap this in a setTimeout
          // if the NODE_ENV is test. With the proper build system, this should be dead code eliminated
          // when building for production and should therefore have no impact on production code.


          // Ensure that toggle of menu occurs after the potential blur event in iOS
          _this.internalSetTimeout(function () {
            return _this.toggleMenu({
              type: clickButton
            });
          });
        };

        _this.buttonHandleBlur = function (event) {
          var blurTarget = event.target; // Save blur target for comparison with activeElement later
          // Need setTimeout, so that when the user presses Tab, the activeElement is the next focused element, not body element

          _this.internalSetTimeout(function () {
            if (!_this.isMouseDown && (_this.props.environment.document.activeElement == null || _this.props.environment.document.activeElement.id !== _this.inputId) && _this.props.environment.document.activeElement !== blurTarget // Do nothing if we refocus the same element again (to solve issue in Safari on iOS)
            ) {
                _this.reset({
                  type: blurButton
                });
              }
          });
        };

        _this.getLabelProps = function (props) {
          return _extends({
            htmlFor: _this.inputId,
            id: _this.labelId
          }, props);
        };

        _this.getInputProps = function (_temp4) {
          var _ref4 = _temp4 === void 0 ? {} : _temp4,
              onKeyDown = _ref4.onKeyDown,
              onBlur = _ref4.onBlur,
              onChange = _ref4.onChange,
              onInput = _ref4.onInput,
              onChangeText = _ref4.onChangeText,
              rest = _objectWithoutPropertiesLoose(_ref4, ["onKeyDown", "onBlur", "onChange", "onInput", "onChangeText"]);

          var onChangeKey;
          var eventHandlers = {};
          /* istanbul ignore next (preact) */

          onChangeKey = 'onChange';

          var _this$getState6 = _this.getState(),
              inputValue = _this$getState6.inputValue,
              isOpen = _this$getState6.isOpen,
              highlightedIndex = _this$getState6.highlightedIndex;

          if (!rest.disabled) {
            var _eventHandlers;

            eventHandlers = (_eventHandlers = {}, _eventHandlers[onChangeKey] = callAllEventHandlers(onChange, onInput, _this.inputHandleChange), _eventHandlers.onKeyDown = callAllEventHandlers(onKeyDown, _this.inputHandleKeyDown), _eventHandlers.onBlur = callAllEventHandlers(onBlur, _this.inputHandleBlur), _eventHandlers);
          }
          /* istanbul ignore if (react-native) */


          return _extends({
            'aria-autocomplete': 'list',
            'aria-activedescendant': isOpen && typeof highlightedIndex === 'number' && highlightedIndex >= 0 ? _this.getItemId(highlightedIndex) : null,
            'aria-controls': isOpen ? _this.menuId : null,
            'aria-labelledby': _this.labelId,
            // https://developer.mozilla.org/en-US/docs/Web/Security/Securing_your_site/Turning_off_form_autocompletion
            // revert back since autocomplete="nope" is ignored on latest Chrome and Opera
            autoComplete: 'off',
            value: inputValue,
            id: _this.inputId
          }, eventHandlers, rest);
        };

        _this.inputHandleKeyDown = function (event) {
          var key = normalizeArrowKey(event);

          if (key && _this.inputKeyDownHandlers[key]) {
            _this.inputKeyDownHandlers[key].call(_assertThisInitialized(_this), event);
          }
        };

        _this.inputHandleChange = function (event) {
          _this.internalSetState({
            type: changeInput,
            isOpen: true,
            inputValue: event.target.value,
            highlightedIndex: _this.props.defaultHighlightedIndex
          });
        };

        _this.inputHandleBlur = function () {
          // Need setTimeout, so that when the user presses Tab, the activeElement is the next focused element, not the body element
          _this.internalSetTimeout(function () {
            var downshiftButtonIsActive = _this.props.environment.document && !!_this.props.environment.document.activeElement && !!_this.props.environment.document.activeElement.dataset && _this.props.environment.document.activeElement.dataset.toggle && _this._rootNode && _this._rootNode.contains(_this.props.environment.document.activeElement);

            if (!_this.isMouseDown && !downshiftButtonIsActive) {
              _this.reset({
                type: blurInput
              });
            }
          });
        };

        _this.menuRef = function (node) {
          _this._menuNode = node;
        };

        _this.getMenuProps = function (_temp5, _temp6) {
          var _extends3;

          var _ref5 = _temp5 === void 0 ? {} : _temp5,
              _ref5$refKey = _ref5.refKey,
              refKey = _ref5$refKey === void 0 ? 'ref' : _ref5$refKey,
              ref = _ref5.ref,
              props = _objectWithoutPropertiesLoose(_ref5, ["refKey", "ref"]);

          var _ref6 = _temp6 === void 0 ? {} : _temp6,
              _ref6$suppressRefErro = _ref6.suppressRefError,
              suppressRefError = _ref6$suppressRefErro === void 0 ? false : _ref6$suppressRefErro;

          _this.getMenuProps.called = true;
          _this.getMenuProps.refKey = refKey;
          _this.getMenuProps.suppressRefError = suppressRefError;
          return _extends((_extends3 = {}, _extends3[refKey] = handleRefs(ref, _this.menuRef), _extends3.role = 'listbox', _extends3['aria-labelledby'] = props && props['aria-label'] ? null : _this.labelId, _extends3.id = _this.menuId, _extends3), props);
        };

        _this.getItemProps = function (_temp7) {
          var _enabledEventHandlers;

          var _ref7 = _temp7 === void 0 ? {} : _temp7,
              onMouseMove = _ref7.onMouseMove,
              onMouseDown = _ref7.onMouseDown,
              onClick = _ref7.onClick,
              onPress = _ref7.onPress,
              index = _ref7.index,
              _ref7$item = _ref7.item,
              item = _ref7$item === void 0 ? requiredProp('getItemProps', 'item') : _ref7$item,
              rest = _objectWithoutPropertiesLoose(_ref7, ["onMouseMove", "onMouseDown", "onClick", "onPress", "index", "item"]);

          if (index === undefined) {
            _this.items.push(item);

            index = _this.items.indexOf(item);
          } else {
            _this.items[index] = item;
          }

          var onSelectKey = 'onClick';
          var customClickHandler = onClick;
          var enabledEventHandlers = (_enabledEventHandlers = {
            // onMouseMove is used over onMouseEnter here. onMouseMove
            // is only triggered on actual mouse movement while onMouseEnter
            // can fire on DOM changes, interrupting keyboard navigation
            onMouseMove: callAllEventHandlers(onMouseMove, function () {
              if (index === _this.getState().highlightedIndex) {
                return;
              }

              _this.setHighlightedIndex(index, {
                type: itemMouseEnter
              }); // We never want to manually scroll when changing state based
              // on `onMouseMove` because we will be moving the element out
              // from under the user which is currently scrolling/moving the
              // cursor


              _this.avoidScrolling = true;

              _this.internalSetTimeout(function () {
                return _this.avoidScrolling = false;
              }, 250);
            }),
            onMouseDown: callAllEventHandlers(onMouseDown, function (event) {
              // This prevents the activeElement from being changed
              // to the item so it can remain with the current activeElement
              // which is a more common use case.
              event.preventDefault();
            })
          }, _enabledEventHandlers[onSelectKey] = callAllEventHandlers(customClickHandler, function () {
            _this.selectItemAtIndex(index, {
              type: clickItem
            });
          }), _enabledEventHandlers); // Passing down the onMouseDown handler to prevent redirect
          // of the activeElement if clicking on disabled items

          var eventHandlers = rest.disabled ? {
            onMouseDown: enabledEventHandlers.onMouseDown
          } : enabledEventHandlers;
          return _extends({
            id: _this.getItemId(index),
            role: 'option',
            'aria-selected': _this.getState().highlightedIndex === index
          }, eventHandlers, rest);
        };

        _this.clearItems = function () {
          _this.items = [];
        };

        _this.reset = function (otherStateToSet, cb) {
          if (otherStateToSet === void 0) {
            otherStateToSet = {};
          }

          otherStateToSet = pickState(otherStateToSet);

          _this.internalSetState(function (_ref8) {
            var selectedItem = _ref8.selectedItem;
            return _extends({
              isOpen: _this.props.defaultIsOpen,
              highlightedIndex: _this.props.defaultHighlightedIndex,
              inputValue: _this.props.itemToString(selectedItem)
            }, otherStateToSet);
          }, cb);
        };

        _this.toggleMenu = function (otherStateToSet, cb) {
          if (otherStateToSet === void 0) {
            otherStateToSet = {};
          }

          otherStateToSet = pickState(otherStateToSet);

          _this.internalSetState(function (_ref9) {
            var isOpen = _ref9.isOpen;
            return _extends({
              isOpen: !isOpen
            }, isOpen && {
              highlightedIndex: _this.props.defaultHighlightedIndex
            }, otherStateToSet);
          }, function () {
            var _this$getState7 = _this.getState(),
                isOpen = _this$getState7.isOpen,
                highlightedIndex = _this$getState7.highlightedIndex;

            if (isOpen) {
              if (_this.getItemCount() > 0 && typeof highlightedIndex === 'number') {
                _this.setHighlightedIndex(highlightedIndex, otherStateToSet);
              }
            }

            cbToCb(cb)();
          });
        };

        _this.openMenu = function (cb) {
          _this.internalSetState({
            isOpen: true
          }, cb);
        };

        _this.closeMenu = function (cb) {
          _this.internalSetState({
            isOpen: false
          }, cb);
        };

        _this.updateStatus = debounce(function () {
          var state = _this.getState();

          var item = _this.items[state.highlightedIndex];

          var resultCount = _this.getItemCount();

          var status = _this.props.getA11yStatusMessage(_extends({
            itemToString: _this.props.itemToString,
            previousResultCount: _this.previousResultCount,
            resultCount: resultCount,
            highlightedItem: item
          }, state));

          _this.previousResultCount = resultCount;
          setStatus(status, _this.props.environment.document);
        }, 200);

        // fancy destructuring + defaults + aliases
        // this basically says each value of state should either be set to
        // the initial value or the default value if the initial value is not provided
        var _this$props = _this.props,
            defaultHighlightedIndex = _this$props.defaultHighlightedIndex,
            _this$props$initialHi = _this$props.initialHighlightedIndex,
            _highlightedIndex = _this$props$initialHi === void 0 ? defaultHighlightedIndex : _this$props$initialHi,
            defaultIsOpen = _this$props.defaultIsOpen,
            _this$props$initialIs = _this$props.initialIsOpen,
            _isOpen = _this$props$initialIs === void 0 ? defaultIsOpen : _this$props$initialIs,
            _this$props$initialIn = _this$props.initialInputValue,
            _inputValue = _this$props$initialIn === void 0 ? '' : _this$props$initialIn,
            _this$props$initialSe = _this$props.initialSelectedItem,
            _selectedItem = _this$props$initialSe === void 0 ? null : _this$props$initialSe;

        var _state = _this.getState({
          highlightedIndex: _highlightedIndex,
          isOpen: _isOpen,
          inputValue: _inputValue,
          selectedItem: _selectedItem
        });

        if (_state.selectedItem != null && _this.props.initialInputValue === undefined) {
          _state.inputValue = _this.props.itemToString(_state.selectedItem);
        }

        _this.state = _state;
        return _this;
      }

      var _proto = Downshift.prototype;

      /**
       * Clear all running timeouts
       */
      _proto.internalClearTimeouts = function internalClearTimeouts() {
        this.timeoutIds.forEach(function (id) {
          clearTimeout(id);
        });
        this.timeoutIds = [];
      }
      /**
       * Gets the state based on internal state or props
       * If a state value is passed via props, then that
       * is the value given, otherwise it's retrieved from
       * stateToMerge
       *
       * @param {Object} stateToMerge defaults to this.state
       * @return {Object} the state
       */
      ;

      _proto.getState = function getState$1(stateToMerge) {
        if (stateToMerge === void 0) {
          stateToMerge = this.state;
        }

        return getState(stateToMerge, this.props);
      };

      _proto.getItemCount = function getItemCount() {
        // things read better this way. They're in priority order:
        // 1. `this.itemCount`
        // 2. `this.props.itemCount`
        // 3. `this.items.length`
        var itemCount = this.items.length;

        if (this.itemCount != null) {
          itemCount = this.itemCount;
        } else if (this.props.itemCount !== undefined) {
          itemCount = this.props.itemCount;
        }

        return itemCount;
      };

      _proto.getItemNodeFromIndex = function getItemNodeFromIndex(index) {
        return this.props.environment.document.getElementById(this.getItemId(index));
      };

      _proto.scrollHighlightedItemIntoView = function scrollHighlightedItemIntoView() {
        /* istanbul ignore else (react-native) */
        {
          var node = this.getItemNodeFromIndex(this.getState().highlightedIndex);
          this.props.scrollIntoView(node, this._menuNode);
        }
      };

      _proto.moveHighlightedIndex = function moveHighlightedIndex(amount, otherStateToSet) {
        var _this6 = this;

        var itemCount = this.getItemCount();

        var _this$getState8 = this.getState(),
            highlightedIndex = _this$getState8.highlightedIndex;

        if (itemCount > 0) {
          var nextHighlightedIndex = getNextWrappingIndex(amount, highlightedIndex, itemCount, function (index) {
            return _this6.getItemNodeFromIndex(index);
          });
          this.setHighlightedIndex(nextHighlightedIndex, otherStateToSet);
        }
      };

      _proto.getStateAndHelpers = function getStateAndHelpers() {
        var _this$getState9 = this.getState(),
            highlightedIndex = _this$getState9.highlightedIndex,
            inputValue = _this$getState9.inputValue,
            selectedItem = _this$getState9.selectedItem,
            isOpen = _this$getState9.isOpen;

        var itemToString = this.props.itemToString;
        var id = this.id;
        var getRootProps = this.getRootProps,
            getToggleButtonProps = this.getToggleButtonProps,
            getLabelProps = this.getLabelProps,
            getMenuProps = this.getMenuProps,
            getInputProps = this.getInputProps,
            getItemProps = this.getItemProps,
            openMenu = this.openMenu,
            closeMenu = this.closeMenu,
            toggleMenu = this.toggleMenu,
            selectItem = this.selectItem,
            selectItemAtIndex = this.selectItemAtIndex,
            selectHighlightedItem = this.selectHighlightedItem,
            setHighlightedIndex = this.setHighlightedIndex,
            clearSelection = this.clearSelection,
            clearItems = this.clearItems,
            reset = this.reset,
            setItemCount = this.setItemCount,
            unsetItemCount = this.unsetItemCount,
            setState = this.internalSetState;
        return {
          // prop getters
          getRootProps: getRootProps,
          getToggleButtonProps: getToggleButtonProps,
          getLabelProps: getLabelProps,
          getMenuProps: getMenuProps,
          getInputProps: getInputProps,
          getItemProps: getItemProps,
          // actions
          reset: reset,
          openMenu: openMenu,
          closeMenu: closeMenu,
          toggleMenu: toggleMenu,
          selectItem: selectItem,
          selectItemAtIndex: selectItemAtIndex,
          selectHighlightedItem: selectHighlightedItem,
          setHighlightedIndex: setHighlightedIndex,
          clearSelection: clearSelection,
          clearItems: clearItems,
          setItemCount: setItemCount,
          unsetItemCount: unsetItemCount,
          setState: setState,
          // props
          itemToString: itemToString,
          // derived
          id: id,
          // state
          highlightedIndex: highlightedIndex,
          inputValue: inputValue,
          isOpen: isOpen,
          selectedItem: selectedItem
        };
      } //////////////////////////// ROOT
      ;

      _proto.componentDidMount = function componentDidMount() {
        var _this7 = this;

        /* istanbul ignore if (react-native) */
        if ( this.getMenuProps.called && !this.getMenuProps.suppressRefError) {
          validateGetMenuPropsCalledCorrectly(this._menuNode, this.getMenuProps);
        }
        /* istanbul ignore if (react-native) */


        {
          // this.isMouseDown helps us track whether the mouse is currently held down.
          // This is useful when the user clicks on an item in the list, but holds the mouse
          // down long enough for the list to disappear (because the blur event fires on the input)
          // this.isMouseDown is used in the blur handler on the input to determine whether the blur event should
          // trigger hiding the menu.
          var onMouseDown = function () {
            _this7.isMouseDown = true;
          };

          var onMouseUp = function (event) {
            _this7.isMouseDown = false; // if the target element or the activeElement is within a downshift node
            // then we don't want to reset downshift

            var contextWithinDownshift = targetWithinDownshift(event.target, [_this7._rootNode, _this7._menuNode], _this7.props.environment.document);

            if (!contextWithinDownshift && _this7.getState().isOpen) {
              _this7.reset({
                type: mouseUp
              }, function () {
                return _this7.props.onOuterClick(_this7.getStateAndHelpers());
              });
            }
          }; // Touching an element in iOS gives focus and hover states, but touching out of
          // the element will remove hover, and persist the focus state, resulting in the
          // blur event not being triggered.
          // this.isTouchMove helps us track whether the user is tapping or swiping on a touch screen.
          // If the user taps outside of Downshift, the component should be reset,
          // but not if the user is swiping


          var onTouchStart = function () {
            _this7.isTouchMove = false;
          };

          var onTouchMove = function () {
            _this7.isTouchMove = true;
          };

          var onTouchEnd = function (event) {
            var contextWithinDownshift = targetWithinDownshift(event.target, [_this7._rootNode, _this7._menuNode], _this7.props.environment.document, false);

            if (!_this7.isTouchMove && !contextWithinDownshift && _this7.getState().isOpen) {
              _this7.reset({
                type: touchEnd
              }, function () {
                return _this7.props.onOuterClick(_this7.getStateAndHelpers());
              });
            }
          };

          var environment = this.props.environment;
          environment.addEventListener('mousedown', onMouseDown);
          environment.addEventListener('mouseup', onMouseUp);
          environment.addEventListener('touchstart', onTouchStart);
          environment.addEventListener('touchmove', onTouchMove);
          environment.addEventListener('touchend', onTouchEnd);

          this.cleanup = function () {
            _this7.internalClearTimeouts();

            _this7.updateStatus.cancel();

            environment.removeEventListener('mousedown', onMouseDown);
            environment.removeEventListener('mouseup', onMouseUp);
            environment.removeEventListener('touchstart', onTouchStart);
            environment.removeEventListener('touchmove', onTouchMove);
            environment.removeEventListener('touchend', onTouchEnd);
          };
        }
      };

      _proto.shouldScroll = function shouldScroll(prevState, prevProps) {
        var _ref10 = this.props.highlightedIndex === undefined ? this.getState() : this.props,
            currentHighlightedIndex = _ref10.highlightedIndex;

        var _ref11 = prevProps.highlightedIndex === undefined ? prevState : prevProps,
            prevHighlightedIndex = _ref11.highlightedIndex;

        var scrollWhenOpen = currentHighlightedIndex && this.getState().isOpen && !prevState.isOpen;
        return scrollWhenOpen || currentHighlightedIndex !== prevHighlightedIndex;
      };

      _proto.componentDidUpdate = function componentDidUpdate(prevProps, prevState) {
        validateControlledUnchanged(this.state, prevProps, this.props);
        /* istanbul ignore if (react-native) */

        if ( this.getMenuProps.called && !this.getMenuProps.suppressRefError) {
          validateGetMenuPropsCalledCorrectly(this._menuNode, this.getMenuProps);
        }

        if (isControlledProp(this.props, 'selectedItem') && this.props.selectedItemChanged(prevProps.selectedItem, this.props.selectedItem)) {
          this.internalSetState({
            type: controlledPropUpdatedSelectedItem,
            inputValue: this.props.itemToString(this.props.selectedItem)
          });
        }

        if (!this.avoidScrolling && this.shouldScroll(prevState, prevProps)) {
          this.scrollHighlightedItemIntoView();
        }
        /* istanbul ignore else (react-native) */


        this.updateStatus();
      };

      _proto.componentWillUnmount = function componentWillUnmount() {
        this.cleanup(); // avoids memory leak
      };

      _proto.render = function render() {
        var children = unwrapArray(this.props.children, noop); // because the items are rerendered every time we call the children
        // we clear this out each render and it will be populated again as
        // getItemProps is called.

        this.clearItems(); // we reset this so we know whether the user calls getRootProps during
        // this render. If they do then we don't need to do anything,
        // if they don't then we need to clone the element they return and
        // apply the props for them.

        this.getRootProps.called = false;
        this.getRootProps.refKey = undefined;
        this.getRootProps.suppressRefError = undefined; // we do something similar for getMenuProps

        this.getMenuProps.called = false;
        this.getMenuProps.refKey = undefined;
        this.getMenuProps.suppressRefError = undefined; // we do something similar for getLabelProps

        this.getLabelProps.called = false; // and something similar for getInputProps

        this.getInputProps.called = false;
        var element = unwrapArray(children(this.getStateAndHelpers()));

        if (!element) {
          return null;
        }

        if (this.getRootProps.called || this.props.suppressRefError) {
          if ( !this.getRootProps.suppressRefError && !this.props.suppressRefError) {
            validateGetRootPropsCalledCorrectly(element, this.getRootProps);
          }

          return element;
        } else if (isDOMElement(element)) {
          // they didn't apply the root props, but we can clone
          // this and apply the props ourselves
          return /*#__PURE__*/react.cloneElement(element, this.getRootProps(getElementProps(element)));
        }
        /* istanbul ignore else */


        // they didn't apply the root props, but they need to
        // otherwise we can't query around the autocomplete
        throw new Error('downshift: If you return a non-DOM element, you must apply the getRootProps function');
        /* istanbul ignore next */
      };

      return Downshift;
    }(react.Component);

    Downshift.defaultProps = {
      defaultHighlightedIndex: null,
      defaultIsOpen: false,
      getA11yStatusMessage: getA11yStatusMessage,
      itemToString: function itemToString(i) {
        if (i == null) {
          return '';
        }

        if ( isPlainObject(i) && !i.hasOwnProperty('toString')) {
          // eslint-disable-next-line no-console
          console.warn('downshift: An object was passed to the default implementation of `itemToString`. You should probably provide your own `itemToString` implementation. Please refer to the `itemToString` API documentation.', 'The object that was passed:', i);
        }

        return String(i);
      },
      onStateChange: noop,
      onInputValueChange: noop,
      onUserAction: noop,
      onChange: noop,
      onSelect: noop,
      onOuterClick: noop,
      selectedItemChanged: function selectedItemChanged(prevItem, item) {
        return prevItem !== item;
      },
      environment: typeof window === 'undefined'
      /* istanbul ignore next (ssr) */
      ? {} : window,
      stateReducer: function stateReducer(state, stateToSet) {
        return stateToSet;
      },
      suppressRefError: false,
      scrollIntoView: scrollIntoView
    };
    Downshift.stateChangeTypes = stateChangeTypes;
    return Downshift;
  }();

  Downshift.propTypes = {
    children: propTypes.func,
    defaultHighlightedIndex: propTypes.number,
    defaultIsOpen: propTypes.bool,
    initialHighlightedIndex: propTypes.number,
    initialSelectedItem: propTypes.any,
    initialInputValue: propTypes.string,
    initialIsOpen: propTypes.bool,
    getA11yStatusMessage: propTypes.func,
    itemToString: propTypes.func,
    onChange: propTypes.func,
    onSelect: propTypes.func,
    onStateChange: propTypes.func,
    onInputValueChange: propTypes.func,
    onUserAction: propTypes.func,
    onOuterClick: propTypes.func,
    selectedItemChanged: propTypes.func,
    stateReducer: propTypes.func,
    itemCount: propTypes.number,
    id: propTypes.string,
    environment: propTypes.shape({
      addEventListener: propTypes.func,
      removeEventListener: propTypes.func,
      document: propTypes.shape({
        getElementById: propTypes.func,
        activeElement: propTypes.any,
        body: propTypes.any
      })
    }),
    suppressRefError: propTypes.bool,
    scrollIntoView: propTypes.func,
    // things we keep in state for uncontrolled components
    // but can accept as props for controlled components

    /* eslint-disable react/no-unused-prop-types */
    selectedItem: propTypes.any,
    isOpen: propTypes.bool,
    inputValue: propTypes.string,
    highlightedIndex: propTypes.number,
    labelId: propTypes.string,
    inputId: propTypes.string,
    menuId: propTypes.string,
    getItemId: propTypes.func
    /* eslint-enable react/no-unused-prop-types */

  };

  function validateGetMenuPropsCalledCorrectly(node, _ref12) {
    var refKey = _ref12.refKey;

    if (!node) {
      // eslint-disable-next-line no-console
      console.error("downshift: The ref prop \"" + refKey + "\" from getMenuProps was not applied correctly on your menu element.");
    }
  }

  function validateGetRootPropsCalledCorrectly(element, _ref13) {
    var refKey = _ref13.refKey;
    var refKeySpecified = refKey !== 'ref';
    var isComposite = !isDOMElement(element);

    if (isComposite && !refKeySpecified && !reactIs$1.isForwardRef(element)) {
      // eslint-disable-next-line no-console
      console.error('downshift: You returned a non-DOM element. You must specify a refKey in getRootProps');
    } else if (!isComposite && refKeySpecified) {
      // eslint-disable-next-line no-console
      console.error("downshift: You returned a DOM element. You should not specify a refKey in getRootProps. You specified \"" + refKey + "\"");
    }

    if (!reactIs$1.isForwardRef(element) && !getElementProps(element)[refKey]) {
      // eslint-disable-next-line no-console
      console.error("downshift: You must apply the ref prop \"" + refKey + "\" from getRootProps onto your root element.");
    }
  }

  var dropdownDefaultStateValues = {
    highlightedIndex: -1,
    isOpen: false,
    selectedItem: null,
    inputValue: ''
  };

  function callOnChangeProps(action, state, newState) {
    var props = action.props,
        type = action.type;
    var changes = {};
    Object.keys(state).forEach(function (key) {
      invokeOnChangeHandler(key, action, state, newState);

      if (newState[key] !== state[key]) {
        changes[key] = newState[key];
      }
    });

    if (props.onStateChange && Object.keys(changes).length) {
      props.onStateChange(_extends({
        type: type
      }, changes));
    }
  }

  function invokeOnChangeHandler(key, action, state, newState) {
    var props = action.props,
        type = action.type;
    var handler = "on" + capitalizeString(key) + "Change";

    if (props[handler] && newState[key] !== undefined && newState[key] !== state[key]) {
      props[handler](_extends({
        type: type
      }, newState));
    }
  }
  /**
   * Default state reducer that returns the changes.
   *
   * @param {Object} s state.
   * @param {Object} a action with changes.
   * @returns {Object} changes.
   */


  function stateReducer(s, a) {
    return a.changes;
  }
  /**
   * Returns a message to be added to aria-live region when item is selected.
   *
   * @param {Object} selectionParameters Parameters required to build the message.
   * @returns {string} The a11y message.
   */


  function getA11ySelectionMessage(selectionParameters) {
    var selectedItem = selectionParameters.selectedItem,
        itemToStringLocal = selectionParameters.itemToString;
    return selectedItem ? itemToStringLocal(selectedItem) + " has been selected." : '';
  }
  /**
   * Debounced call for updating the a11y message.
   */


  var updateA11yStatus = debounce(function (getA11yMessage, document) {
    setStatus(getA11yMessage(), document);
  }, 200); // istanbul ignore next

  var useIsomorphicLayoutEffect = typeof window !== 'undefined' && typeof window.document !== 'undefined' && typeof window.document.createElement !== 'undefined' ? react.useLayoutEffect : react.useEffect;

  function useElementIds(_ref) {
    var _ref$id = _ref.id,
        id = _ref$id === void 0 ? "downshift-" + generateId() : _ref$id,
        labelId = _ref.labelId,
        menuId = _ref.menuId,
        getItemId = _ref.getItemId,
        toggleButtonId = _ref.toggleButtonId,
        inputId = _ref.inputId;
    var elementIdsRef = react.useRef({
      labelId: labelId || id + "-label",
      menuId: menuId || id + "-menu",
      getItemId: getItemId || function (index) {
        return id + "-item-" + index;
      },
      toggleButtonId: toggleButtonId || id + "-toggle-button",
      inputId: inputId || id + "-input"
    });
    return elementIdsRef.current;
  }

  function getItemIndex(index, item, items) {
    if (index !== undefined) {
      return index;
    }

    if (items.length === 0) {
      return -1;
    }

    return items.indexOf(item);
  }

  function itemToString(item) {
    return item ? String(item) : '';
  }

  function isAcceptedCharacterKey(key) {
    return /^\S{1}$/.test(key);
  }

  function capitalizeString(string) {
    return "" + string.slice(0, 1).toUpperCase() + string.slice(1);
  }

  function useLatestRef(val) {
    var ref = react.useRef(val); // technically this is not "concurrent mode safe" because we're manipulating
    // the value during render (so it's not idempotent). However, the places this
    // hook is used is to support memoizing callbacks which will be called
    // *during* render, so we need the latest values *during* render.
    // If not for this, then we'd probably want to use useLayoutEffect instead.

    ref.current = val;
    return ref;
  }
  /**
   * Computes the controlled state using a the previous state, props,
   * two reducers, one from downshift and an optional one from the user.
   * Also calls the onChange handlers for state values that have changed.
   *
   * @param {Function} reducer Reducer function from downshift.
   * @param {Object} initialState Initial state of the hook.
   * @param {Object} props The hook props.
   * @returns {Array} An array with the state and an action dispatcher.
   */


  function useEnhancedReducer(reducer, initialState, props) {
    var prevStateRef = react.useRef();
    var actionRef = react.useRef();
    var enhancedReducer = react.useCallback(function (state, action) {
      actionRef.current = action;
      state = getState(state, action.props);
      var changes = reducer(state, action);
      var newState = action.props.stateReducer(state, _extends({}, action, {
        changes: changes
      }));
      return newState;
    }, [reducer]);

    var _useReducer = react.useReducer(enhancedReducer, initialState),
        state = _useReducer[0],
        dispatch = _useReducer[1];

    var propsRef = useLatestRef(props);
    var dispatchWithProps = react.useCallback(function (action) {
      return dispatch(_extends({
        props: propsRef.current
      }, action));
    }, [propsRef]);
    var action = actionRef.current;
    react.useEffect(function () {
      if (action && prevStateRef.current && prevStateRef.current !== state) {
        callOnChangeProps(action, getState(prevStateRef.current, action.props), state);
      }

      prevStateRef.current = state;
    }, [state, props, action]);
    return [state, dispatchWithProps];
  }
  /**
   * Wraps the useEnhancedReducer and applies the controlled prop values before
   * returning the new state.
   *
   * @param {Function} reducer Reducer function from downshift.
   * @param {Object} initialState Initial state of the hook.
   * @param {Object} props The hook props.
   * @returns {Array} An array with the state and an action dispatcher.
   */


  function useControlledReducer(reducer, initialState, props) {
    var _useEnhancedReducer = useEnhancedReducer(reducer, initialState, props),
        state = _useEnhancedReducer[0],
        dispatch = _useEnhancedReducer[1];

    return [getState(state, props), dispatch];
  }

  var defaultProps = {
    itemToString: itemToString,
    stateReducer: stateReducer,
    getA11ySelectionMessage: getA11ySelectionMessage,
    scrollIntoView: scrollIntoView,
    circularNavigation: false,
    environment: typeof window === 'undefined'
    /* istanbul ignore next (ssr) */
    ? {} : window
  };

  function getDefaultValue(props, propKey, defaultStateValues) {
    if (defaultStateValues === void 0) {
      defaultStateValues = dropdownDefaultStateValues;
    }

    var defaultPropKey = "default" + capitalizeString(propKey);

    if (defaultPropKey in props) {
      return props[defaultPropKey];
    }

    return defaultStateValues[propKey];
  }

  function getInitialValue(props, propKey, defaultStateValues) {
    if (defaultStateValues === void 0) {
      defaultStateValues = dropdownDefaultStateValues;
    }

    if (propKey in props) {
      return props[propKey];
    }

    var initialPropKey = "initial" + capitalizeString(propKey);

    if (initialPropKey in props) {
      return props[initialPropKey];
    }

    return getDefaultValue(props, propKey, defaultStateValues);
  }

  function getInitialState(props) {
    var selectedItem = getInitialValue(props, 'selectedItem');
    var isOpen = getInitialValue(props, 'isOpen');
    var highlightedIndex = getInitialValue(props, 'highlightedIndex');
    var inputValue = getInitialValue(props, 'inputValue');
    return {
      highlightedIndex: highlightedIndex < 0 && selectedItem && isOpen ? props.items.indexOf(selectedItem) : highlightedIndex,
      isOpen: isOpen,
      selectedItem: selectedItem,
      inputValue: inputValue
    };
  }

  function getHighlightedIndexOnOpen(props, state, offset, getItemNodeFromIndex) {
    var items = props.items,
        initialHighlightedIndex = props.initialHighlightedIndex,
        defaultHighlightedIndex = props.defaultHighlightedIndex;
    var selectedItem = state.selectedItem,
        highlightedIndex = state.highlightedIndex;

    if (items.length === 0) {
      return -1;
    } // initialHighlightedIndex will give value to highlightedIndex on initial state only.


    if (initialHighlightedIndex !== undefined && highlightedIndex === initialHighlightedIndex) {
      return initialHighlightedIndex;
    }

    if (defaultHighlightedIndex !== undefined) {
      return defaultHighlightedIndex;
    }

    if (selectedItem) {
      if (offset === 0) {
        return items.indexOf(selectedItem);
      }

      return getNextWrappingIndex(offset, items.indexOf(selectedItem), items.length, getItemNodeFromIndex, false);
    }

    if (offset === 0) {
      return -1;
    }

    return offset < 0 ? items.length - 1 : 0;
  }
  /**
   * Reuse the movement tracking of mouse and touch events.
   *
   * @param {boolean} isOpen Whether the dropdown is open or not.
   * @param {Array<Object>} downshiftElementRefs Downshift element refs to track movement (toggleButton, menu etc.)
   * @param {Object} environment Environment where component/hook exists.
   * @param {Function} handleBlur Handler on blur from mouse or touch.
   * @returns {Object} Ref containing whether mouseDown or touchMove event is happening
   */


  function useMouseAndTouchTracker(isOpen, downshiftElementRefs, environment, handleBlur) {
    var mouseAndTouchTrackersRef = react.useRef({
      isMouseDown: false,
      isTouchMove: false
    });
    react.useEffect(function () {
      // The same strategy for checking if a click occurred inside or outside downsift
      // as in downshift.js.
      var onMouseDown = function () {
        mouseAndTouchTrackersRef.current.isMouseDown = true;
      };

      var onMouseUp = function (event) {
        mouseAndTouchTrackersRef.current.isMouseDown = false;

        if (isOpen && !targetWithinDownshift(event.target, downshiftElementRefs.map(function (ref) {
          return ref.current;
        }), environment.document)) {
          handleBlur();
        }
      };

      var onTouchStart = function () {
        mouseAndTouchTrackersRef.current.isTouchMove = false;
      };

      var onTouchMove = function () {
        mouseAndTouchTrackersRef.current.isTouchMove = true;
      };

      var onTouchEnd = function (event) {
        if (isOpen && !mouseAndTouchTrackersRef.current.isTouchMove && !targetWithinDownshift(event.target, downshiftElementRefs.map(function (ref) {
          return ref.current;
        }), environment.document, false)) {
          handleBlur();
        }
      };

      environment.addEventListener('mousedown', onMouseDown);
      environment.addEventListener('mouseup', onMouseUp);
      environment.addEventListener('touchstart', onTouchStart);
      environment.addEventListener('touchmove', onTouchMove);
      environment.addEventListener('touchend', onTouchEnd);
      return function () {
        environment.removeEventListener('mousedown', onMouseDown);
        environment.removeEventListener('mouseup', onMouseUp);
        environment.removeEventListener('touchstart', onTouchStart);
        environment.removeEventListener('touchmove', onTouchMove);
        environment.removeEventListener('touchend', onTouchEnd);
      }; // eslint-disable-next-line react-hooks/exhaustive-deps
    }, [isOpen, environment]);
    return mouseAndTouchTrackersRef;
  }
  /* istanbul ignore next */
  // eslint-disable-next-line import/no-mutable-exports


  var useGetterPropsCalledChecker = function () {
    return noop;
  };
  /**
   * Custom hook that checks if getter props are called correctly.
   *
   * @param  {...any} propKeys Getter prop names to be handled.
   * @returns {Function} Setter function called inside getter props to set call information.
   */

  /* istanbul ignore next */


  useGetterPropsCalledChecker = function () {
    var isInitialMountRef = react.useRef(true);

    for (var _len = arguments.length, propKeys = new Array(_len), _key = 0; _key < _len; _key++) {
      propKeys[_key] = arguments[_key];
    }

    var getterPropsCalledRef = react.useRef(propKeys.reduce(function (acc, propKey) {
      acc[propKey] = {};
      return acc;
    }, {}));
    react.useEffect(function () {
      Object.keys(getterPropsCalledRef.current).forEach(function (propKey) {
        var propCallInfo = getterPropsCalledRef.current[propKey];

        if (isInitialMountRef.current) {
          if (!Object.keys(propCallInfo).length) {
            // eslint-disable-next-line no-console
            console.error("downshift: You forgot to call the " + propKey + " getter function on your component / element.");
            return;
          }
        }

        var suppressRefError = propCallInfo.suppressRefError,
            refKey = propCallInfo.refKey,
            elementRef = propCallInfo.elementRef;

        if ((!elementRef || !elementRef.current) && !suppressRefError) {
          // eslint-disable-next-line no-console
          console.error("downshift: The ref prop \"" + refKey + "\" from " + propKey + " was not applied correctly on your element.");
        }
      });
      isInitialMountRef.current = false;
    });
    var setGetterPropCallInfo = react.useCallback(function (propKey, suppressRefError, refKey, elementRef) {
      getterPropsCalledRef.current[propKey] = {
        suppressRefError: suppressRefError,
        refKey: refKey,
        elementRef: elementRef
      };
    }, []);
    return setGetterPropCallInfo;
  };

  function useA11yMessageSetter(getA11yMessage, dependencyArray, _ref2) {
    var isInitialMount = _ref2.isInitialMount,
        highlightedIndex = _ref2.highlightedIndex,
        items = _ref2.items,
        environment = _ref2.environment,
        rest = _objectWithoutPropertiesLoose(_ref2, ["isInitialMount", "highlightedIndex", "items", "environment"]);

    // Sets a11y status message on changes in state.
    react.useEffect(function () {
      if (isInitialMount) {
        return;
      }

      updateA11yStatus(function () {
        return getA11yMessage(_extends({
          highlightedIndex: highlightedIndex,
          highlightedItem: items[highlightedIndex],
          resultCount: items.length
        }, rest));
      }, environment.document); // eslint-disable-next-line react-hooks/exhaustive-deps
    }, dependencyArray);
  }

  function useScrollIntoView(_ref3) {
    var highlightedIndex = _ref3.highlightedIndex,
        isOpen = _ref3.isOpen,
        itemRefs = _ref3.itemRefs,
        getItemNodeFromIndex = _ref3.getItemNodeFromIndex,
        menuElement = _ref3.menuElement,
        scrollIntoViewProp = _ref3.scrollIntoView;
    // used not to scroll on highlight by mouse.
    var shouldScrollRef = react.useRef(true); // Scroll on highlighted item if change comes from keyboard.

    useIsomorphicLayoutEffect(function () {
      if (highlightedIndex < 0 || !isOpen || !Object.keys(itemRefs.current).length) {
        return;
      }

      if (shouldScrollRef.current === false) {
        shouldScrollRef.current = true;
      } else {
        scrollIntoViewProp(getItemNodeFromIndex(highlightedIndex), menuElement);
      } // eslint-disable-next-line react-hooks/exhaustive-deps

    }, [highlightedIndex]);
    return shouldScrollRef;
  } // eslint-disable-next-line import/no-mutable-exports


  var useControlPropsValidator = noop;
  /* istanbul ignore next */

  useControlPropsValidator = function (_ref4) {
    var isInitialMount = _ref4.isInitialMount,
        props = _ref4.props,
        state = _ref4.state;
    // used for checking when props are moving from controlled to uncontrolled.
    var prevPropsRef = react.useRef(props);
    react.useEffect(function () {
      if (isInitialMount) {
        return;
      }

      validateControlledUnchanged(state, prevPropsRef.current, props);
      prevPropsRef.current = props;
    }, [state, props, isInitialMount]);
  };

  var MenuMouseLeave = '__menu_mouse_leave__';
  var ItemMouseMove = '__item_mouse_move__';
  var ItemClick = '__item_click__';
  var ToggleButtonClick = '__togglebutton_click__';
  var FunctionToggleMenu = '__function_toggle_menu__';
  var FunctionOpenMenu = '__function_open_menu__';
  var FunctionCloseMenu = '__function_close_menu__';
  var FunctionSetHighlightedIndex = '__function_set_highlighted_index__';
  var FunctionSelectItem = '__function_select_item__';
  var FunctionSetInputValue = '__function_set_input_value__';
  var FunctionReset = '__function_reset__'; // to be used by useSelect and useCombobox

  function productionEnumFn(state) {
    return state;
  }

  /* eslint-disable complexity */

  function downshiftCommonReducer(state, action) {
    var type = action.type,
        props = action.props;
    var changes;

    switch (type) {
      case ItemMouseMove:
        changes = {
          highlightedIndex: action.index
        };
        break;

      case MenuMouseLeave:
        changes = {
          highlightedIndex: -1
        };
        break;

      case ToggleButtonClick:
      case FunctionToggleMenu:
        changes = {
          isOpen: !state.isOpen,
          highlightedIndex: state.isOpen ? -1 : getHighlightedIndexOnOpen(props, state, 0)
        };
        break;

      case FunctionOpenMenu:
        changes = {
          isOpen: true,
          highlightedIndex: getHighlightedIndexOnOpen(props, state, 0)
        };
        break;

      case FunctionCloseMenu:
        changes = {
          isOpen: false
        };
        break;

      case FunctionSetHighlightedIndex:
        changes = {
          highlightedIndex: action.highlightedIndex
        };
        break;

      case FunctionSetInputValue:
        changes = {
          inputValue: action.inputValue
        };
        break;

      case FunctionReset:
        changes = {
          highlightedIndex: getDefaultValue(props, 'highlightedIndex'),
          isOpen: getDefaultValue(props, 'isOpen'),
          selectedItem: getDefaultValue(props, 'selectedItem'),
          inputValue: getDefaultValue(props, 'inputValue')
        };
        break;

      default:
        throw new Error('Reducer called without proper action type.');
    }

    return _extends({}, state, changes);
  }
  /* eslint-enable complexity */

  function getItemIndexByCharacterKey(keysSoFar, highlightedIndex, items, itemToString, getItemNodeFromIndex) {
    var lowerCasedKeysSoFar = keysSoFar.toLowerCase();

    for (var index = 0; index < items.length; index++) {
      var offsetIndex = (index + highlightedIndex + 1) % items.length;

      if (itemToString(items[offsetIndex]).toLowerCase().startsWith(lowerCasedKeysSoFar)) {
        var element = getItemNodeFromIndex(offsetIndex);

        if (!(element && element.hasAttribute('disabled'))) {
          return offsetIndex;
        }
      }
    }

    return highlightedIndex;
  }

  var propTypes$1 = {
    items: propTypes.array.isRequired,
    itemToString: propTypes.func,
    getA11yStatusMessage: propTypes.func,
    getA11ySelectionMessage: propTypes.func,
    circularNavigation: propTypes.bool,
    highlightedIndex: propTypes.number,
    defaultHighlightedIndex: propTypes.number,
    initialHighlightedIndex: propTypes.number,
    isOpen: propTypes.bool,
    defaultIsOpen: propTypes.bool,
    initialIsOpen: propTypes.bool,
    selectedItem: propTypes.any,
    initialSelectedItem: propTypes.any,
    defaultSelectedItem: propTypes.any,
    id: propTypes.string,
    labelId: propTypes.string,
    menuId: propTypes.string,
    getItemId: propTypes.func,
    toggleButtonId: propTypes.string,
    stateReducer: propTypes.func,
    onSelectedItemChange: propTypes.func,
    onHighlightedIndexChange: propTypes.func,
    onStateChange: propTypes.func,
    onIsOpenChange: propTypes.func,
    environment: propTypes.shape({
      addEventListener: propTypes.func,
      removeEventListener: propTypes.func,
      document: propTypes.shape({
        getElementById: propTypes.func,
        activeElement: propTypes.any,
        body: propTypes.any
      })
    })
  };
  /**
   * Default implementation for status message. Only added when menu is open.
   * Will specift if there are results in the list, and if so, how many,
   * and what keys are relevant.
   *
   * @param {Object} param the downshift state and other relevant properties
   * @return {String} the a11y status message
   */

  function getA11yStatusMessage$1(_ref) {
    var isOpen = _ref.isOpen,
        resultCount = _ref.resultCount,
        previousResultCount = _ref.previousResultCount;

    if (!isOpen) {
      return '';
    }

    if (!resultCount) {
      return 'No results are available.';
    }

    if (resultCount !== previousResultCount) {
      return resultCount + " result" + (resultCount === 1 ? ' is' : 's are') + " available, use up and down arrow keys to navigate. Press Enter or Space Bar keys to select.";
    }

    return '';
  }

  var defaultProps$1 = _extends({}, defaultProps, {
    getA11yStatusMessage: getA11yStatusMessage$1
  }); // eslint-disable-next-line import/no-mutable-exports


  var validatePropTypes = noop;
  /* istanbul ignore next */

  validatePropTypes = function (options, caller) {
    propTypes.checkPropTypes(propTypes$1, options, 'prop', caller.name);
  };

  var MenuKeyDownArrowDown = productionEnumFn('__menu_keydown_arrow_down__');
  var MenuKeyDownArrowUp = productionEnumFn('__menu_keydown_arrow_up__');
  var MenuKeyDownEscape = productionEnumFn('__menu_keydown_escape__');
  var MenuKeyDownHome = productionEnumFn('__menu_keydown_home__');
  var MenuKeyDownEnd = productionEnumFn('__menu_keydown_end__');
  var MenuKeyDownEnter = productionEnumFn('__menu_keydown_enter__');
  var MenuKeyDownSpaceButton = productionEnumFn('__menu_keydown_space_button__');
  var MenuKeyDownCharacter = productionEnumFn('__menu_keydown_character__');
  var MenuBlur = productionEnumFn('__menu_blur__');
  var ToggleButtonKeyDownArrowDown = productionEnumFn('__togglebutton_keydown_arrow_down__');
  var ToggleButtonKeyDownArrowUp = productionEnumFn('__togglebutton_keydown_arrow_up__');
  var ToggleButtonKeyDownCharacter = productionEnumFn('__togglebutton_keydown_character__');

  var stateChangeTypes$1 = /*#__PURE__*/Object.freeze({
    __proto__: null,
    MenuKeyDownArrowDown: MenuKeyDownArrowDown,
    MenuKeyDownArrowUp: MenuKeyDownArrowUp,
    MenuKeyDownEscape: MenuKeyDownEscape,
    MenuKeyDownHome: MenuKeyDownHome,
    MenuKeyDownEnd: MenuKeyDownEnd,
    MenuKeyDownEnter: MenuKeyDownEnter,
    MenuKeyDownSpaceButton: MenuKeyDownSpaceButton,
    MenuKeyDownCharacter: MenuKeyDownCharacter,
    MenuBlur: MenuBlur,
    ToggleButtonKeyDownArrowDown: ToggleButtonKeyDownArrowDown,
    ToggleButtonKeyDownArrowUp: ToggleButtonKeyDownArrowUp,
    ToggleButtonKeyDownCharacter: ToggleButtonKeyDownCharacter,
    MenuMouseLeave: MenuMouseLeave,
    ItemMouseMove: ItemMouseMove,
    ItemClick: ItemClick,
    ToggleButtonClick: ToggleButtonClick,
    FunctionToggleMenu: FunctionToggleMenu,
    FunctionOpenMenu: FunctionOpenMenu,
    FunctionCloseMenu: FunctionCloseMenu,
    FunctionSetHighlightedIndex: FunctionSetHighlightedIndex,
    FunctionSelectItem: FunctionSelectItem,
    FunctionSetInputValue: FunctionSetInputValue,
    FunctionReset: FunctionReset,
    productionEnumFn: productionEnumFn
  });

  /* eslint-disable complexity */

  function downshiftSelectReducer(state, action) {
    var type = action.type,
        props = action.props,
        shiftKey = action.shiftKey;
    var changes;

    switch (type) {
      case ItemClick:
        changes = {
          isOpen: getDefaultValue(props, 'isOpen'),
          highlightedIndex: getDefaultValue(props, 'highlightedIndex'),
          selectedItem: props.items[action.index]
        };
        break;

      case ToggleButtonKeyDownCharacter:
        {
          var lowercasedKey = action.key;
          var inputValue = "" + state.inputValue + lowercasedKey;
          var itemIndex = getItemIndexByCharacterKey(inputValue, state.selectedItem ? props.items.indexOf(state.selectedItem) : -1, props.items, props.itemToString, action.getItemNodeFromIndex);
          changes = _extends({
            inputValue: inputValue
          }, itemIndex >= 0 && {
            selectedItem: props.items[itemIndex]
          });
        }
        break;

      case ToggleButtonKeyDownArrowDown:
        changes = {
          highlightedIndex: getHighlightedIndexOnOpen(props, state, 1, action.getItemNodeFromIndex),
          isOpen: true
        };
        break;

      case ToggleButtonKeyDownArrowUp:
        changes = {
          highlightedIndex: getHighlightedIndexOnOpen(props, state, -1, action.getItemNodeFromIndex),
          isOpen: true
        };
        break;

      case MenuKeyDownEnter:
      case MenuKeyDownSpaceButton:
        changes = _extends({
          isOpen: getDefaultValue(props, 'isOpen'),
          highlightedIndex: getDefaultValue(props, 'highlightedIndex')
        }, state.highlightedIndex >= 0 && {
          selectedItem: props.items[state.highlightedIndex]
        });
        break;

      case MenuKeyDownHome:
        changes = {
          highlightedIndex: getNextNonDisabledIndex(1, 0, props.items.length, action.getItemNodeFromIndex, false)
        };
        break;

      case MenuKeyDownEnd:
        changes = {
          highlightedIndex: getNextNonDisabledIndex(-1, props.items.length - 1, props.items.length, action.getItemNodeFromIndex, false)
        };
        break;

      case MenuKeyDownEscape:
        changes = {
          isOpen: false,
          highlightedIndex: -1
        };
        break;

      case MenuBlur:
        changes = {
          isOpen: false,
          highlightedIndex: -1
        };
        break;

      case MenuKeyDownCharacter:
        {
          var _lowercasedKey = action.key;

          var _inputValue = "" + state.inputValue + _lowercasedKey;

          var highlightedIndex = getItemIndexByCharacterKey(_inputValue, state.highlightedIndex, props.items, props.itemToString, action.getItemNodeFromIndex);
          changes = _extends({
            inputValue: _inputValue
          }, highlightedIndex >= 0 && {
            highlightedIndex: highlightedIndex
          });
        }
        break;

      case MenuKeyDownArrowDown:
        changes = {
          highlightedIndex: getNextWrappingIndex(shiftKey ? 5 : 1, state.highlightedIndex, props.items.length, action.getItemNodeFromIndex, props.circularNavigation)
        };
        break;

      case MenuKeyDownArrowUp:
        changes = {
          highlightedIndex: getNextWrappingIndex(shiftKey ? -5 : -1, state.highlightedIndex, props.items.length, action.getItemNodeFromIndex, props.circularNavigation)
        };
        break;

      case FunctionSelectItem:
        changes = {
          selectedItem: action.selectedItem
        };
        break;

      default:
        return downshiftCommonReducer(state, action);
    }

    return _extends({}, state, changes);
  }
  /* eslint-enable complexity */

  useSelect.stateChangeTypes = stateChangeTypes$1;

  function useSelect(userProps) {
    if (userProps === void 0) {
      userProps = {};
    }

    validatePropTypes(userProps, useSelect); // Props defaults and destructuring.

    var props = _extends({}, defaultProps$1, userProps);

    var items = props.items,
        scrollIntoView = props.scrollIntoView,
        environment = props.environment,
        initialIsOpen = props.initialIsOpen,
        defaultIsOpen = props.defaultIsOpen,
        itemToString = props.itemToString,
        getA11ySelectionMessage = props.getA11ySelectionMessage,
        getA11yStatusMessage = props.getA11yStatusMessage; // Initial state depending on controlled props.

    var initialState = getInitialState(props);

    var _useControlledReducer = useControlledReducer(downshiftSelectReducer, initialState, props),
        state = _useControlledReducer[0],
        dispatch = _useControlledReducer[1];

    var isOpen = state.isOpen,
        highlightedIndex = state.highlightedIndex,
        selectedItem = state.selectedItem,
        inputValue = state.inputValue; // Element efs.

    var toggleButtonRef = react.useRef(null);
    var menuRef = react.useRef(null);
    var itemRefs = react.useRef();
    itemRefs.current = {}; // used not to trigger menu blur action in some scenarios.

    var shouldBlurRef = react.useRef(true); // used to keep the inputValue clearTimeout object between renders.

    var clearTimeoutRef = react.useRef(null); // prevent id re-generation between renders.

    var elementIds = useElementIds(props); // used to keep track of how many items we had on previous cycle.

    var previousResultCountRef = react.useRef();
    var isInitialMountRef = react.useRef(true); // utility callback to get item element.

    var latest = useLatestRef({
      state: state,
      props: props
    }); // Some utils.

    var getItemNodeFromIndex = react.useCallback(function (index) {
      return itemRefs.current[elementIds.getItemId(index)];
    }, [elementIds]); // Effects.
    // Sets a11y status message on changes in state.

    useA11yMessageSetter(getA11yStatusMessage, [isOpen, highlightedIndex, inputValue, items], _extends({
      isInitialMount: isInitialMountRef.current,
      previousResultCount: previousResultCountRef.current,
      items: items,
      environment: environment,
      itemToString: itemToString
    }, state)); // Sets a11y status message on changes in selectedItem.

    useA11yMessageSetter(getA11ySelectionMessage, [selectedItem], _extends({
      isInitialMount: isInitialMountRef.current,
      previousResultCount: previousResultCountRef.current,
      items: items,
      environment: environment,
      itemToString: itemToString
    }, state)); // Scroll on highlighted item if change comes from keyboard.

    var shouldScrollRef = useScrollIntoView({
      menuElement: menuRef.current,
      highlightedIndex: highlightedIndex,
      isOpen: isOpen,
      itemRefs: itemRefs,
      scrollIntoView: scrollIntoView,
      getItemNodeFromIndex: getItemNodeFromIndex
    }); // Sets cleanup for the keysSoFar after 500ms.

    react.useEffect(function () {
      // init the clean function here as we need access to dispatch.
      if (isInitialMountRef.current) {
        clearTimeoutRef.current = debounce(function (outerDispatch) {
          outerDispatch({
            type: FunctionSetInputValue,
            inputValue: ''
          });
        }, 500);
      }

      if (!inputValue) {
        return;
      }

      clearTimeoutRef.current(dispatch);
    }, [dispatch, inputValue]);
    useControlPropsValidator({
      isInitialMount: isInitialMountRef.current,
      props: props,
      state: state
    });
    /* Controls the focus on the menu or the toggle button. */

    react.useEffect(function () {
      // Don't focus menu on first render.
      if (isInitialMountRef.current) {
        // Unless it was initialised as open.
        if ((initialIsOpen || defaultIsOpen || isOpen) && menuRef.current) {
          menuRef.current.focus();
        }

        return;
      } // Focus menu on open.


      if (isOpen) {
        // istanbul ignore else
        if (menuRef.current) {
          menuRef.current.focus();
        }

        return;
      } // Focus toggleButton on close, but not if it was closed with (Shift+)Tab.


      if (environment.document.activeElement === menuRef.current) {
        // istanbul ignore else
        if (toggleButtonRef.current) {
          shouldBlurRef.current = false;
          toggleButtonRef.current.focus();
        }
      } // eslint-disable-next-line react-hooks/exhaustive-deps

    }, [isOpen]);
    react.useEffect(function () {
      if (isInitialMountRef.current) {
        return;
      }

      previousResultCountRef.current = items.length;
    }); // Add mouse/touch events to document.

    var mouseAndTouchTrackersRef = useMouseAndTouchTracker(isOpen, [menuRef, toggleButtonRef], environment, function () {
      dispatch({
        type: MenuBlur
      });
    });
    var setGetterPropCallInfo = useGetterPropsCalledChecker('getMenuProps', 'getToggleButtonProps'); // Make initial ref false.

    react.useEffect(function () {
      isInitialMountRef.current = false;
    }, []); // Event handler functions.

    var toggleButtonKeyDownHandlers = react.useMemo(function () {
      return {
        ArrowDown: function ArrowDown(event) {
          event.preventDefault();
          dispatch({
            type: ToggleButtonKeyDownArrowDown,
            getItemNodeFromIndex: getItemNodeFromIndex,
            shiftKey: event.shiftKey
          });
        },
        ArrowUp: function ArrowUp(event) {
          event.preventDefault();
          dispatch({
            type: ToggleButtonKeyDownArrowUp,
            getItemNodeFromIndex: getItemNodeFromIndex,
            shiftKey: event.shiftKey
          });
        }
      };
    }, [dispatch, getItemNodeFromIndex]);
    var menuKeyDownHandlers = react.useMemo(function () {
      return {
        ArrowDown: function ArrowDown(event) {
          event.preventDefault();
          dispatch({
            type: MenuKeyDownArrowDown,
            getItemNodeFromIndex: getItemNodeFromIndex,
            shiftKey: event.shiftKey
          });
        },
        ArrowUp: function ArrowUp(event) {
          event.preventDefault();
          dispatch({
            type: MenuKeyDownArrowUp,
            getItemNodeFromIndex: getItemNodeFromIndex,
            shiftKey: event.shiftKey
          });
        },
        Home: function Home(event) {
          event.preventDefault();
          dispatch({
            type: MenuKeyDownHome,
            getItemNodeFromIndex: getItemNodeFromIndex
          });
        },
        End: function End(event) {
          event.preventDefault();
          dispatch({
            type: MenuKeyDownEnd,
            getItemNodeFromIndex: getItemNodeFromIndex
          });
        },
        Escape: function Escape() {
          dispatch({
            type: MenuKeyDownEscape
          });
        },
        Enter: function Enter(event) {
          event.preventDefault();
          dispatch({
            type: MenuKeyDownEnter
          });
        },
        ' ': function _(event) {
          event.preventDefault();
          dispatch({
            type: MenuKeyDownSpaceButton
          });
        }
      };
    }, [dispatch, getItemNodeFromIndex]); // Action functions.

    var toggleMenu = react.useCallback(function () {
      dispatch({
        type: FunctionToggleMenu
      });
    }, [dispatch]);
    var closeMenu = react.useCallback(function () {
      dispatch({
        type: FunctionCloseMenu
      });
    }, [dispatch]);
    var openMenu = react.useCallback(function () {
      dispatch({
        type: FunctionOpenMenu
      });
    }, [dispatch]);
    var setHighlightedIndex = react.useCallback(function (newHighlightedIndex) {
      dispatch({
        type: FunctionSetHighlightedIndex,
        highlightedIndex: newHighlightedIndex
      });
    }, [dispatch]);
    var selectItem = react.useCallback(function (newSelectedItem) {
      dispatch({
        type: FunctionSelectItem,
        selectedItem: newSelectedItem
      });
    }, [dispatch]);
    var reset = react.useCallback(function () {
      dispatch({
        type: FunctionReset
      });
    }, [dispatch]);
    var setInputValue = react.useCallback(function (newInputValue) {
      dispatch({
        type: FunctionSetInputValue,
        inputValue: newInputValue
      });
    }, [dispatch]); // Getter functions.

    var getLabelProps = react.useCallback(function (labelProps) {
      return _extends({
        id: elementIds.labelId,
        htmlFor: elementIds.toggleButtonId
      }, labelProps);
    }, [elementIds]);
    var getMenuProps = react.useCallback(function (_temp, _temp2) {
      var _extends2;

      var _ref = _temp === void 0 ? {} : _temp,
          onMouseLeave = _ref.onMouseLeave,
          _ref$refKey = _ref.refKey,
          refKey = _ref$refKey === void 0 ? 'ref' : _ref$refKey,
          onKeyDown = _ref.onKeyDown,
          onBlur = _ref.onBlur,
          ref = _ref.ref,
          rest = _objectWithoutPropertiesLoose(_ref, ["onMouseLeave", "refKey", "onKeyDown", "onBlur", "ref"]);

      var _ref2 = _temp2 === void 0 ? {} : _temp2,
          _ref2$suppressRefErro = _ref2.suppressRefError,
          suppressRefError = _ref2$suppressRefErro === void 0 ? false : _ref2$suppressRefErro;

      var latestState = latest.current.state;
      setGetterPropCallInfo('getMenuProps', suppressRefError, refKey, menuRef);
      return _extends((_extends2 = {}, _extends2[refKey] = handleRefs(ref, function (menuNode) {
        menuRef.current = menuNode;
      }), _extends2.id = elementIds.menuId, _extends2.role = 'listbox', _extends2['aria-labelledby'] = elementIds.labelId, _extends2.tabIndex = -1, _extends2), latestState.isOpen && latestState.highlightedIndex > -1 && {
        'aria-activedescendant': elementIds.getItemId(latestState.highlightedIndex)
      }, {
        onMouseLeave: callAllEventHandlers(onMouseLeave, function menuHandleMouseLeave() {
          dispatch({
            type: MenuMouseLeave
          });
        }),
        onKeyDown: callAllEventHandlers(onKeyDown, function menuHandleKeyDown(event) {
          var key = normalizeArrowKey(event);

          if (key && menuKeyDownHandlers[key]) {
            menuKeyDownHandlers[key](event);
          } else if (isAcceptedCharacterKey(key)) {
            dispatch({
              type: MenuKeyDownCharacter,
              key: key,
              getItemNodeFromIndex: getItemNodeFromIndex
            });
          }
        }),
        onBlur: callAllEventHandlers(onBlur, function menuHandleBlur() {
          // if the blur was a result of selection, we don't trigger this action.
          if (shouldBlurRef.current === false) {
            shouldBlurRef.current = true;
            return;
          }

          var shouldBlur = !mouseAndTouchTrackersRef.current.isMouseDown;
          /* istanbul ignore else */

          if (shouldBlur) {
            dispatch({
              type: MenuBlur
            });
          }
        })
      }, rest);
    }, [dispatch, latest, menuKeyDownHandlers, mouseAndTouchTrackersRef, setGetterPropCallInfo, elementIds, getItemNodeFromIndex]);
    var getToggleButtonProps = react.useCallback(function (_temp3, _temp4) {
      var _extends3;

      var _ref3 = _temp3 === void 0 ? {} : _temp3,
          onClick = _ref3.onClick,
          onKeyDown = _ref3.onKeyDown,
          _ref3$refKey = _ref3.refKey,
          refKey = _ref3$refKey === void 0 ? 'ref' : _ref3$refKey,
          ref = _ref3.ref,
          rest = _objectWithoutPropertiesLoose(_ref3, ["onClick", "onKeyDown", "refKey", "ref"]);

      var _ref4 = _temp4 === void 0 ? {} : _temp4,
          _ref4$suppressRefErro = _ref4.suppressRefError,
          suppressRefError = _ref4$suppressRefErro === void 0 ? false : _ref4$suppressRefErro;

      var toggleButtonHandleClick = function () {
        dispatch({
          type: ToggleButtonClick
        });
      };

      var toggleButtonHandleKeyDown = function (event) {
        var key = normalizeArrowKey(event);

        if (key && toggleButtonKeyDownHandlers[key]) {
          toggleButtonKeyDownHandlers[key](event);
        } else if (isAcceptedCharacterKey(key)) {
          dispatch({
            type: ToggleButtonKeyDownCharacter,
            key: key,
            getItemNodeFromIndex: getItemNodeFromIndex
          });
        }
      };

      var toggleProps = _extends((_extends3 = {}, _extends3[refKey] = handleRefs(ref, function (toggleButtonNode) {
        toggleButtonRef.current = toggleButtonNode;
      }), _extends3.id = elementIds.toggleButtonId, _extends3['aria-haspopup'] = 'listbox', _extends3['aria-expanded'] = latest.current.state.isOpen, _extends3['aria-labelledby'] = elementIds.labelId + " " + elementIds.toggleButtonId, _extends3), rest);

      if (!rest.disabled) {
        toggleProps.onClick = callAllEventHandlers(onClick, toggleButtonHandleClick);
        toggleProps.onKeyDown = callAllEventHandlers(onKeyDown, toggleButtonHandleKeyDown);
      }

      setGetterPropCallInfo('getToggleButtonProps', suppressRefError, refKey, toggleButtonRef);
      return toggleProps;
    }, [dispatch, latest, toggleButtonKeyDownHandlers, setGetterPropCallInfo, elementIds, getItemNodeFromIndex]);
    var getItemProps = react.useCallback(function (_temp5) {
      var _extends4;

      var _ref5 = _temp5 === void 0 ? {} : _temp5,
          item = _ref5.item,
          index = _ref5.index,
          onMouseMove = _ref5.onMouseMove,
          onClick = _ref5.onClick,
          _ref5$refKey = _ref5.refKey,
          refKey = _ref5$refKey === void 0 ? 'ref' : _ref5$refKey,
          ref = _ref5.ref,
          rest = _objectWithoutPropertiesLoose(_ref5, ["item", "index", "onMouseMove", "onClick", "refKey", "ref"]);

      var _latest$current = latest.current,
          latestState = _latest$current.state,
          latestProps = _latest$current.props;

      var itemHandleMouseMove = function () {
        if (index === latestState.highlightedIndex) {
          return;
        }

        shouldScrollRef.current = false;
        dispatch({
          type: ItemMouseMove,
          index: index
        });
      };

      var itemHandleClick = function () {
        dispatch({
          type: ItemClick,
          index: index
        });
      };

      var itemIndex = getItemIndex(index, item, latestProps.items);

      if (itemIndex < 0) {
        throw new Error('Pass either item or item index in getItemProps!');
      }

      var itemProps = _extends((_extends4 = {
        role: 'option',
        'aria-selected': "" + (itemIndex === latestState.highlightedIndex),
        id: elementIds.getItemId(itemIndex)
      }, _extends4[refKey] = handleRefs(ref, function (itemNode) {
        if (itemNode) {
          itemRefs.current[elementIds.getItemId(itemIndex)] = itemNode;
        }
      }), _extends4), rest);

      if (!rest.disabled) {
        itemProps.onMouseMove = callAllEventHandlers(onMouseMove, itemHandleMouseMove);
        itemProps.onClick = callAllEventHandlers(onClick, itemHandleClick);
      }

      return itemProps;
    }, [dispatch, latest, shouldScrollRef, elementIds]);
    return {
      // prop getters.
      getToggleButtonProps: getToggleButtonProps,
      getLabelProps: getLabelProps,
      getMenuProps: getMenuProps,
      getItemProps: getItemProps,
      // actions.
      toggleMenu: toggleMenu,
      openMenu: openMenu,
      closeMenu: closeMenu,
      setHighlightedIndex: setHighlightedIndex,
      selectItem: selectItem,
      reset: reset,
      setInputValue: setInputValue,
      // state.
      highlightedIndex: highlightedIndex,
      isOpen: isOpen,
      selectedItem: selectedItem,
      inputValue: inputValue
    };
  }

  var InputKeyDownArrowDown = productionEnumFn('__input_keydown_arrow_down__');
  var InputKeyDownArrowUp = productionEnumFn('__input_keydown_arrow_up__');
  var InputKeyDownEscape = productionEnumFn('__input_keydown_escape__');
  var InputKeyDownHome = productionEnumFn('__input_keydown_home__');
  var InputKeyDownEnd = productionEnumFn('__input_keydown_end__');
  var InputKeyDownEnter = productionEnumFn('__input_keydown_enter__');
  var InputChange = productionEnumFn('__input_change__');
  var InputBlur = productionEnumFn('__input_blur__');
  var ControlledPropUpdatedSelectedItem = productionEnumFn('__controlled_prop_updated_selected_item__');

  var stateChangeTypes$2 = /*#__PURE__*/Object.freeze({
    __proto__: null,
    InputKeyDownArrowDown: InputKeyDownArrowDown,
    InputKeyDownArrowUp: InputKeyDownArrowUp,
    InputKeyDownEscape: InputKeyDownEscape,
    InputKeyDownHome: InputKeyDownHome,
    InputKeyDownEnd: InputKeyDownEnd,
    InputKeyDownEnter: InputKeyDownEnter,
    InputChange: InputChange,
    InputBlur: InputBlur,
    ControlledPropUpdatedSelectedItem: ControlledPropUpdatedSelectedItem,
    MenuMouseLeave: MenuMouseLeave,
    ItemMouseMove: ItemMouseMove,
    ItemClick: ItemClick,
    ToggleButtonClick: ToggleButtonClick,
    FunctionToggleMenu: FunctionToggleMenu,
    FunctionOpenMenu: FunctionOpenMenu,
    FunctionCloseMenu: FunctionCloseMenu,
    FunctionSetHighlightedIndex: FunctionSetHighlightedIndex,
    FunctionSelectItem: FunctionSelectItem,
    FunctionSetInputValue: FunctionSetInputValue,
    FunctionReset: FunctionReset,
    productionEnumFn: productionEnumFn
  });

  function getInitialState$1(props) {
    var initialState = getInitialState(props);
    var selectedItem = initialState.selectedItem;
    var inputValue = initialState.inputValue;

    if (inputValue === '' && selectedItem && props.defaultInputValue === undefined && props.initialInputValue === undefined && props.inputValue === undefined) {
      inputValue = props.itemToString(selectedItem);
    }

    return _extends({}, initialState, {
      inputValue: inputValue
    });
  }

  var propTypes$2 = {
    items: propTypes.array.isRequired,
    itemToString: propTypes.func,
    getA11yStatusMessage: propTypes.func,
    getA11ySelectionMessage: propTypes.func,
    circularNavigation: propTypes.bool,
    highlightedIndex: propTypes.number,
    defaultHighlightedIndex: propTypes.number,
    initialHighlightedIndex: propTypes.number,
    isOpen: propTypes.bool,
    defaultIsOpen: propTypes.bool,
    initialIsOpen: propTypes.bool,
    selectedItem: propTypes.any,
    initialSelectedItem: propTypes.any,
    defaultSelectedItem: propTypes.any,
    inputValue: propTypes.string,
    defaultInputValue: propTypes.string,
    initialInputValue: propTypes.string,
    id: propTypes.string,
    labelId: propTypes.string,
    menuId: propTypes.string,
    getItemId: propTypes.func,
    inputId: propTypes.string,
    toggleButtonId: propTypes.string,
    stateReducer: propTypes.func,
    onSelectedItemChange: propTypes.func,
    onHighlightedIndexChange: propTypes.func,
    onStateChange: propTypes.func,
    onIsOpenChange: propTypes.func,
    onInputValueChange: propTypes.func,
    environment: propTypes.shape({
      addEventListener: propTypes.func,
      removeEventListener: propTypes.func,
      document: propTypes.shape({
        getElementById: propTypes.func,
        activeElement: propTypes.any,
        body: propTypes.any
      })
    })
  };
  /**
   * The useCombobox version of useControlledReducer, which also
   * checks if the controlled prop selectedItem changed between
   * renders. If so, it will also update inputValue with its
   * string equivalent. It uses the common useEnhancedReducer to
   * compute the rest of the state.
   *
   * @param {Function} reducer Reducer function from downshift.
   * @param {Object} initialState Initial state of the hook.
   * @param {Object} props The hook props.
   * @returns {Array} An array with the state and an action dispatcher.
   */

  function useControlledReducer$1(reducer, initialState, props) {
    var previousSelectedItemRef = react.useRef();

    var _useEnhancedReducer = useEnhancedReducer(reducer, initialState, props),
        state = _useEnhancedReducer[0],
        dispatch = _useEnhancedReducer[1]; // ToDo: if needed, make same approach as selectedItemChanged from Downshift.


    react.useEffect(function () {
      if (isControlledProp(props, 'selectedItem')) {
        if (previousSelectedItemRef.current !== props.selectedItem) {
          dispatch({
            type: ControlledPropUpdatedSelectedItem,
            inputValue: props.itemToString(props.selectedItem)
          });
        }

        previousSelectedItemRef.current = state.selectedItem === previousSelectedItemRef.current ? props.selectedItem : state.selectedItem;
      }
    });
    return [getState(state, props), dispatch];
  } // eslint-disable-next-line import/no-mutable-exports


  var validatePropTypes$1 = noop;
  /* istanbul ignore next */

  validatePropTypes$1 = function (options, caller) {
    propTypes.checkPropTypes(propTypes$2, options, 'prop', caller.name);
  };

  var defaultProps$2 = _extends({}, defaultProps, {
    getA11yStatusMessage: getA11yStatusMessage,
    circularNavigation: true
  });

  /* eslint-disable complexity */

  function downshiftUseComboboxReducer(state, action) {
    var type = action.type,
        props = action.props,
        shiftKey = action.shiftKey;
    var changes;

    switch (type) {
      case ItemClick:
        changes = {
          isOpen: getDefaultValue(props, 'isOpen'),
          highlightedIndex: getDefaultValue(props, 'highlightedIndex'),
          selectedItem: props.items[action.index],
          inputValue: props.itemToString(props.items[action.index])
        };
        break;

      case InputKeyDownArrowDown:
        if (state.isOpen) {
          changes = {
            highlightedIndex: getNextWrappingIndex(shiftKey ? 5 : 1, state.highlightedIndex, props.items.length, action.getItemNodeFromIndex, props.circularNavigation)
          };
        } else {
          changes = {
            highlightedIndex: getHighlightedIndexOnOpen(props, state, 1, action.getItemNodeFromIndex),
            isOpen: true
          };
        }

        break;

      case InputKeyDownArrowUp:
        if (state.isOpen) {
          changes = {
            highlightedIndex: getNextWrappingIndex(shiftKey ? -5 : -1, state.highlightedIndex, props.items.length, action.getItemNodeFromIndex, props.circularNavigation)
          };
        } else {
          changes = {
            highlightedIndex: getHighlightedIndexOnOpen(props, state, -1, action.getItemNodeFromIndex),
            isOpen: true
          };
        }

        break;

      case InputKeyDownEnter:
        changes = _extends({}, state.isOpen && state.highlightedIndex >= 0 && {
          selectedItem: props.items[state.highlightedIndex],
          isOpen: getDefaultValue(props, 'isOpen'),
          highlightedIndex: getDefaultValue(props, 'highlightedIndex'),
          inputValue: props.itemToString(props.items[state.highlightedIndex])
        });
        break;

      case InputKeyDownEscape:
        changes = _extends({
          isOpen: false,
          highlightedIndex: -1
        }, !state.isOpen && {
          selectedItem: null,
          inputValue: ''
        });
        break;

      case InputKeyDownHome:
        changes = _extends({}, state.isOpen && {
          highlightedIndex: getNextNonDisabledIndex(1, 0, props.items.length, action.getItemNodeFromIndex, false)
        });
        break;

      case InputKeyDownEnd:
        changes = _extends({}, state.isOpen && {
          highlightedIndex: getNextNonDisabledIndex(-1, props.items.length - 1, props.items.length, action.getItemNodeFromIndex, false)
        });
        break;

      case InputBlur:
        if (state.isOpen) {
          changes = _extends({
            isOpen: false,
            highlightedIndex: -1
          }, state.highlightedIndex >= 0 && action.selectItem && {
            selectedItem: props.items[state.highlightedIndex],
            inputValue: props.itemToString(props.items[state.highlightedIndex])
          });
        }

        break;

      case InputChange:
        changes = {
          isOpen: true,
          highlightedIndex: getDefaultValue(props, 'highlightedIndex'),
          inputValue: action.inputValue
        };
        break;

      case FunctionSelectItem:
        changes = {
          selectedItem: action.selectedItem,
          inputValue: props.itemToString(action.selectedItem)
        };
        break;

      case ControlledPropUpdatedSelectedItem:
        changes = {
          inputValue: action.inputValue
        };
        break;

      default:
        return downshiftCommonReducer(state, action);
    }

    return _extends({}, state, changes);
  }
  /* eslint-enable complexity */

  useCombobox.stateChangeTypes = stateChangeTypes$2;

  function useCombobox(userProps) {
    if (userProps === void 0) {
      userProps = {};
    }

    validatePropTypes$1(userProps, useCombobox); // Props defaults and destructuring.

    var props = _extends({}, defaultProps$2, userProps);

    var initialIsOpen = props.initialIsOpen,
        defaultIsOpen = props.defaultIsOpen,
        items = props.items,
        scrollIntoView = props.scrollIntoView,
        environment = props.environment,
        getA11yStatusMessage = props.getA11yStatusMessage,
        getA11ySelectionMessage = props.getA11ySelectionMessage,
        itemToString = props.itemToString; // Initial state depending on controlled props.

    var initialState = getInitialState$1(props);

    var _useControlledReducer = useControlledReducer$1(downshiftUseComboboxReducer, initialState, props),
        state = _useControlledReducer[0],
        dispatch = _useControlledReducer[1];

    var isOpen = state.isOpen,
        highlightedIndex = state.highlightedIndex,
        selectedItem = state.selectedItem,
        inputValue = state.inputValue; // Element refs.

    var menuRef = react.useRef(null);
    var itemRefs = react.useRef();
    var inputRef = react.useRef(null);
    var toggleButtonRef = react.useRef(null);
    var comboboxRef = react.useRef(null);
    itemRefs.current = {};
    var isInitialMountRef = react.useRef(true); // prevent id re-generation between renders.

    var elementIds = useElementIds(props); // used to keep track of how many items we had on previous cycle.

    var previousResultCountRef = react.useRef(); // utility callback to get item element.

    var latest = useLatestRef({
      state: state,
      props: props
    });
    var getItemNodeFromIndex = react.useCallback(function (index) {
      return itemRefs.current[elementIds.getItemId(index)];
    }, [elementIds]); // Effects.
    // Sets a11y status message on changes in state.

    useA11yMessageSetter(getA11yStatusMessage, [isOpen, highlightedIndex, inputValue, items], _extends({
      isInitialMount: isInitialMountRef.current,
      previousResultCount: previousResultCountRef.current,
      items: items,
      environment: environment,
      itemToString: itemToString
    }, state)); // Sets a11y status message on changes in selectedItem.

    useA11yMessageSetter(getA11ySelectionMessage, [selectedItem], _extends({
      isInitialMount: isInitialMountRef.current,
      previousResultCount: previousResultCountRef.current,
      items: items,
      environment: environment,
      itemToString: itemToString
    }, state)); // Scroll on highlighted item if change comes from keyboard.

    var shouldScrollRef = useScrollIntoView({
      menuElement: menuRef.current,
      highlightedIndex: highlightedIndex,
      isOpen: isOpen,
      itemRefs: itemRefs,
      scrollIntoView: scrollIntoView,
      getItemNodeFromIndex: getItemNodeFromIndex
    });
    useControlPropsValidator({
      isInitialMount: isInitialMountRef.current,
      props: props,
      state: state
    }); // Focus the input on first render if required.

    react.useEffect(function () {
      if ((initialIsOpen || defaultIsOpen || isOpen) && inputRef.current) {
        inputRef.current.focus();
      } // eslint-disable-next-line react-hooks/exhaustive-deps

    }, []);
    react.useEffect(function () {
      if (isInitialMountRef.current) {
        return;
      }

      previousResultCountRef.current = items.length;
    }); // Add mouse/touch events to document.

    var mouseAndTouchTrackersRef = useMouseAndTouchTracker(isOpen, [comboboxRef, menuRef, toggleButtonRef], environment, function () {
      dispatch({
        type: InputBlur,
        selectItem: false
      });
    });
    var setGetterPropCallInfo = useGetterPropsCalledChecker('getInputProps', 'getComboboxProps', 'getMenuProps'); // Make initial ref false.

    react.useEffect(function () {
      isInitialMountRef.current = false;
    }, []);
    /* Event handler functions */

    var inputKeyDownHandlers = react.useMemo(function () {
      return {
        ArrowDown: function ArrowDown(event) {
          event.preventDefault();
          dispatch({
            type: InputKeyDownArrowDown,
            shiftKey: event.shiftKey,
            getItemNodeFromIndex: getItemNodeFromIndex
          });
        },
        ArrowUp: function ArrowUp(event) {
          event.preventDefault();
          dispatch({
            type: InputKeyDownArrowUp,
            shiftKey: event.shiftKey,
            getItemNodeFromIndex: getItemNodeFromIndex
          });
        },
        Home: function Home(event) {
          event.preventDefault();
          dispatch({
            type: InputKeyDownHome,
            getItemNodeFromIndex: getItemNodeFromIndex
          });
        },
        End: function End(event) {
          event.preventDefault();
          dispatch({
            type: InputKeyDownEnd,
            getItemNodeFromIndex: getItemNodeFromIndex
          });
        },
        Escape: function Escape() {
          dispatch({
            type: InputKeyDownEscape
          });
        },
        Enter: function Enter(event) {
          // if IME composing, wait for next Enter keydown event.
          if (event.which === 229) {
            return;
          }

          var latestState = latest.current.state;

          if (latestState.isOpen) {
            event.preventDefault();
          }

          dispatch({
            type: InputKeyDownEnter,
            getItemNodeFromIndex: getItemNodeFromIndex
          });
        }
      };
    }, [dispatch, latest, getItemNodeFromIndex]); // Getter props.

    var getLabelProps = react.useCallback(function (labelProps) {
      return _extends({
        id: elementIds.labelId,
        htmlFor: elementIds.inputId
      }, labelProps);
    }, [elementIds]);
    var getMenuProps = react.useCallback(function (_temp, _temp2) {
      var _extends2;

      var _ref = _temp === void 0 ? {} : _temp,
          onMouseLeave = _ref.onMouseLeave,
          _ref$refKey = _ref.refKey,
          refKey = _ref$refKey === void 0 ? 'ref' : _ref$refKey,
          ref = _ref.ref,
          rest = _objectWithoutPropertiesLoose(_ref, ["onMouseLeave", "refKey", "ref"]);

      var _ref2 = _temp2 === void 0 ? {} : _temp2,
          _ref2$suppressRefErro = _ref2.suppressRefError,
          suppressRefError = _ref2$suppressRefErro === void 0 ? false : _ref2$suppressRefErro;

      setGetterPropCallInfo('getMenuProps', suppressRefError, refKey, menuRef);
      return _extends((_extends2 = {}, _extends2[refKey] = handleRefs(ref, function (menuNode) {
        menuRef.current = menuNode;
      }), _extends2.id = elementIds.menuId, _extends2.role = 'listbox', _extends2['aria-labelledby'] = elementIds.labelId, _extends2.onMouseLeave = callAllEventHandlers(onMouseLeave, function () {
        dispatch({
          type: MenuMouseLeave
        });
      }), _extends2), rest);
    }, [dispatch, setGetterPropCallInfo, elementIds]);
    var getItemProps = react.useCallback(function (_temp3) {
      var _extends3, _ref4;

      var _ref3 = _temp3 === void 0 ? {} : _temp3,
          item = _ref3.item,
          index = _ref3.index,
          _ref3$refKey = _ref3.refKey,
          refKey = _ref3$refKey === void 0 ? 'ref' : _ref3$refKey,
          ref = _ref3.ref,
          onMouseMove = _ref3.onMouseMove,
          onClick = _ref3.onClick,
          onPress = _ref3.onPress,
          rest = _objectWithoutPropertiesLoose(_ref3, ["item", "index", "refKey", "ref", "onMouseMove", "onClick", "onPress"]);

      var _latest$current = latest.current,
          latestProps = _latest$current.props,
          latestState = _latest$current.state;
      var itemIndex = getItemIndex(index, item, latestProps.items);

      if (itemIndex < 0) {
        throw new Error('Pass either item or item index in getItemProps!');
      }

      var onSelectKey = 'onClick';
      var customClickHandler = onClick;
      return _extends((_extends3 = {}, _extends3[refKey] = handleRefs(ref, function (itemNode) {
        if (itemNode) {
          itemRefs.current[elementIds.getItemId(itemIndex)] = itemNode;
        }
      }), _extends3.role = 'option', _extends3['aria-selected'] = "" + (itemIndex === latestState.highlightedIndex), _extends3.id = elementIds.getItemId(itemIndex), _extends3), !rest.disabled && (_ref4 = {
        onMouseMove: callAllEventHandlers(onMouseMove, function itemHandleMouseMove() {
          if (index === latestState.highlightedIndex) {
            return;
          }

          shouldScrollRef.current = false;
          dispatch({
            type: ItemMouseMove,
            index: index
          });
        })
      }, _ref4[onSelectKey] = callAllEventHandlers(customClickHandler, function itemHandleClick() {
        dispatch({
          type: ItemClick,
          index: index
        });

        if (inputRef.current) {
          inputRef.current.focus();
        }
      }), _ref4), rest);
    }, [dispatch, latest, shouldScrollRef, elementIds]);
    var getToggleButtonProps = react.useCallback(function (_temp4) {
      var _extends4;

      var _ref5 = _temp4 === void 0 ? {} : _temp4,
          onClick = _ref5.onClick,
          onPress = _ref5.onPress,
          _ref5$refKey = _ref5.refKey,
          refKey = _ref5$refKey === void 0 ? 'ref' : _ref5$refKey,
          ref = _ref5.ref,
          rest = _objectWithoutPropertiesLoose(_ref5, ["onClick", "onPress", "refKey", "ref"]);

      var toggleButtonHandleClick = function () {
        dispatch({
          type: ToggleButtonClick
        });

        if (!latest.current.state.isOpen && inputRef.current) {
          inputRef.current.focus();
        }
      };

      return _extends((_extends4 = {}, _extends4[refKey] = handleRefs(ref, function (toggleButtonNode) {
        toggleButtonRef.current = toggleButtonNode;
      }), _extends4.id = elementIds.toggleButtonId, _extends4.tabIndex = -1, _extends4), !rest.disabled && _extends({}, {
        onClick: callAllEventHandlers(onClick, toggleButtonHandleClick)
      }), rest);
    }, [dispatch, latest, elementIds]);
    var getInputProps = react.useCallback(function (_temp5, _temp6) {
      var _extends5;

      var _ref6 = _temp5 === void 0 ? {} : _temp5,
          onKeyDown = _ref6.onKeyDown,
          onChange = _ref6.onChange,
          onInput = _ref6.onInput,
          onBlur = _ref6.onBlur,
          onChangeText = _ref6.onChangeText,
          _ref6$refKey = _ref6.refKey,
          refKey = _ref6$refKey === void 0 ? 'ref' : _ref6$refKey,
          ref = _ref6.ref,
          rest = _objectWithoutPropertiesLoose(_ref6, ["onKeyDown", "onChange", "onInput", "onBlur", "onChangeText", "refKey", "ref"]);

      var _ref7 = _temp6 === void 0 ? {} : _temp6,
          _ref7$suppressRefErro = _ref7.suppressRefError,
          suppressRefError = _ref7$suppressRefErro === void 0 ? false : _ref7$suppressRefErro;

      setGetterPropCallInfo('getInputProps', suppressRefError, refKey, inputRef);
      var latestState = latest.current.state;

      var inputHandleKeyDown = function (event) {
        var key = normalizeArrowKey(event);

        if (key && inputKeyDownHandlers[key]) {
          inputKeyDownHandlers[key](event);
        }
      };

      var inputHandleChange = function (event) {
        dispatch({
          type: InputChange,
          inputValue: event.target.value
        });
      };

      var inputHandleBlur = function () {
        /* istanbul ignore else */
        if (!mouseAndTouchTrackersRef.current.isMouseDown) {
          dispatch({
            type: InputBlur,
            selectItem: true
          });
        }
      };
      /* istanbul ignore next (preact) */


      var onChangeKey = 'onChange';
      var eventHandlers = {};

      if (!rest.disabled) {
        var _eventHandlers;

        eventHandlers = (_eventHandlers = {}, _eventHandlers[onChangeKey] = callAllEventHandlers(onChange, onInput, inputHandleChange), _eventHandlers.onKeyDown = callAllEventHandlers(onKeyDown, inputHandleKeyDown), _eventHandlers.onBlur = callAllEventHandlers(onBlur, inputHandleBlur), _eventHandlers);
      }
      /* istanbul ignore if (react-native) */


      return _extends((_extends5 = {}, _extends5[refKey] = handleRefs(ref, function (inputNode) {
        inputRef.current = inputNode;
      }), _extends5.id = elementIds.inputId, _extends5['aria-autocomplete'] = 'list', _extends5['aria-controls'] = elementIds.menuId, _extends5), latestState.isOpen && latestState.highlightedIndex > -1 && {
        'aria-activedescendant': elementIds.getItemId(latestState.highlightedIndex)
      }, {
        'aria-labelledby': elementIds.labelId,
        // https://developer.mozilla.org/en-US/docs/Web/Security/Securing_your_site/Turning_off_form_autocompletion
        // revert back since autocomplete="nope" is ignored on latest Chrome and Opera
        autoComplete: 'off',
        value: latestState.inputValue
      }, eventHandlers, rest);
    }, [dispatch, inputKeyDownHandlers, latest, mouseAndTouchTrackersRef, setGetterPropCallInfo, elementIds]);
    var getComboboxProps = react.useCallback(function (_temp7, _temp8) {
      var _extends6;

      var _ref8 = _temp7 === void 0 ? {} : _temp7,
          _ref8$refKey = _ref8.refKey,
          refKey = _ref8$refKey === void 0 ? 'ref' : _ref8$refKey,
          ref = _ref8.ref,
          rest = _objectWithoutPropertiesLoose(_ref8, ["refKey", "ref"]);

      var _ref9 = _temp8 === void 0 ? {} : _temp8,
          _ref9$suppressRefErro = _ref9.suppressRefError,
          suppressRefError = _ref9$suppressRefErro === void 0 ? false : _ref9$suppressRefErro;

      setGetterPropCallInfo('getComboboxProps', suppressRefError, refKey, comboboxRef);
      return _extends((_extends6 = {}, _extends6[refKey] = handleRefs(ref, function (comboboxNode) {
        comboboxRef.current = comboboxNode;
      }), _extends6.role = 'combobox', _extends6['aria-haspopup'] = 'listbox', _extends6['aria-owns'] = elementIds.menuId, _extends6['aria-expanded'] = latest.current.state.isOpen, _extends6), rest);
    }, [latest, setGetterPropCallInfo, elementIds]); // returns

    var toggleMenu = react.useCallback(function () {
      dispatch({
        type: FunctionToggleMenu
      });
    }, [dispatch]);
    var closeMenu = react.useCallback(function () {
      dispatch({
        type: FunctionCloseMenu
      });
    }, [dispatch]);
    var openMenu = react.useCallback(function () {
      dispatch({
        type: FunctionOpenMenu
      });
    }, [dispatch]);
    var setHighlightedIndex = react.useCallback(function (newHighlightedIndex) {
      dispatch({
        type: FunctionSetHighlightedIndex,
        highlightedIndex: newHighlightedIndex
      });
    }, [dispatch]);
    var selectItem = react.useCallback(function (newSelectedItem) {
      dispatch({
        type: FunctionSelectItem,
        selectedItem: newSelectedItem
      });
    }, [dispatch]);
    var setInputValue = react.useCallback(function (newInputValue) {
      dispatch({
        type: FunctionSetInputValue,
        inputValue: newInputValue
      });
    }, [dispatch]);
    var reset = react.useCallback(function () {
      dispatch({
        type: FunctionReset
      });
    }, [dispatch]);
    return {
      // prop getters.
      getItemProps: getItemProps,
      getLabelProps: getLabelProps,
      getMenuProps: getMenuProps,
      getInputProps: getInputProps,
      getComboboxProps: getComboboxProps,
      getToggleButtonProps: getToggleButtonProps,
      // actions.
      toggleMenu: toggleMenu,
      openMenu: openMenu,
      closeMenu: closeMenu,
      setHighlightedIndex: setHighlightedIndex,
      setInputValue: setInputValue,
      selectItem: selectItem,
      reset: reset,
      // state.
      highlightedIndex: highlightedIndex,
      isOpen: isOpen,
      selectedItem: selectedItem,
      inputValue: inputValue
    };
  }

  var defaultStateValues = {
    activeIndex: -1,
    selectedItems: []
  };
  /**
   * Returns the initial value for a state key in the following order:
   * 1. controlled prop, 2. initial prop, 3. default prop, 4. default
   * value from Downshift.
   *
   * @param {Object} props Props passed to the hook.
   * @param {string} propKey Props key to generate the value for.
   * @returns {any} The initial value for that prop.
   */

  function getInitialValue$1(props, propKey) {
    return getInitialValue(props, propKey, defaultStateValues);
  }
  /**
   * Returns the default value for a state key in the following order:
   * 1. controlled prop, 2. default prop, 3. default value from Downshift.
   *
   * @param {Object} props Props passed to the hook.
   * @param {string} propKey Props key to generate the value for.
   * @returns {any} The initial value for that prop.
   */


  function getDefaultValue$1(props, propKey) {
    return getDefaultValue(props, propKey, defaultStateValues);
  }
  /**
   * Gets the initial state based on the provided props. It uses initial, default
   * and controlled props related to state in order to compute the initial value.
   *
   * @param {Object} props Props passed to the hook.
   * @returns {Object} The initial state.
   */


  function getInitialState$2(props) {
    var activeIndex = getInitialValue$1(props, 'activeIndex');
    var selectedItems = getInitialValue$1(props, 'selectedItems');
    return {
      activeIndex: activeIndex,
      selectedItems: selectedItems
    };
  }
  /**
   * Returns true if dropdown keydown operation is permitted. Should not be
   * allowed on keydown with modifier keys (ctrl, alt, shift, meta), on
   * input element with text content that is either highlighted or selection
   * cursor is not at the starting position.
   *
   * @param {KeyboardEvent} event The event from keydown.
   * @returns {boolean} Whether the operation is allowed.
   */


  function isKeyDownOperationPermitted(event) {
    if (event.shiftKey || event.metaKey || event.ctrlKey || event.altKey) {
      return false;
    }

    var element = event.target;

    if (element instanceof HTMLInputElement && // if element is a text input
    element.value !== '' && ( // and we have text in it
    // and cursor is either not at the start or is currently highlighting text.
    element.selectionStart !== 0 || element.selectionEnd !== 0)) {
      return false;
    }

    return true;
  }
  /**
   * Returns a message to be added to aria-live region when item is removed.
   *
   * @param {Object} selectionParameters Parameters required to build the message.
   * @returns {string} The a11y message.
   */


  function getA11yRemovalMessage(selectionParameters) {
    var removedSelectedItem = selectionParameters.removedSelectedItem,
        itemToStringLocal = selectionParameters.itemToString;
    return itemToStringLocal(removedSelectedItem) + " has been removed.";
  }

  var propTypes$3 = {
    selectedItems: propTypes.array,
    initialSelectedItems: propTypes.array,
    defaultSelectedItems: propTypes.array,
    itemToString: propTypes.func,
    getA11yRemovalMessage: propTypes.func,
    stateReducer: propTypes.func,
    activeIndex: propTypes.number,
    initialActiveIndex: propTypes.number,
    defaultActiveIndex: propTypes.number,
    onActiveIndexChange: propTypes.func,
    onSelectedItemsChange: propTypes.func,
    keyNavigationNext: propTypes.string,
    keyNavigationPrevious: propTypes.string,
    environment: propTypes.shape({
      addEventListener: propTypes.func,
      removeEventListener: propTypes.func,
      document: propTypes.shape({
        getElementById: propTypes.func,
        activeElement: propTypes.any,
        body: propTypes.any
      })
    })
  };
  var defaultProps$3 = {
    itemToString: defaultProps.itemToString,
    stateReducer: defaultProps.stateReducer,
    environment: defaultProps.environment,
    getA11yRemovalMessage: getA11yRemovalMessage,
    keyNavigationNext: 'ArrowRight',
    keyNavigationPrevious: 'ArrowLeft'
  }; // eslint-disable-next-line import/no-mutable-exports

  var validatePropTypes$2 = noop;
  /* istanbul ignore next */

  validatePropTypes$2 = function (options, caller) {
    propTypes.checkPropTypes(propTypes$3, options, 'prop', caller.name);
  };

  var SelectedItemClick = '__selected_item_click__';
  var SelectedItemKeyDownDelete = '__selected_item_keydown_delete__';
  var SelectedItemKeyDownBackspace = '__selected_item_keydown_backspace__';
  var SelectedItemKeyDownNavigationNext = '__selected_item_keydown_navigation_next__';
  var SelectedItemKeyDownNavigationPrevious = '__selected_item_keydown_navigation_previous__';
  var DropdownKeyDownNavigationPrevious = '__dropdown_keydown_navigation_previous__';
  var DropdownKeyDownBackspace = '__dropdown_keydown_backspace__';
  var DropdownClick = '__dropdown_click__';
  var FunctionAddSelectedItem = '__function_add_selected_item__';
  var FunctionRemoveSelectedItem = '__function_remove_selected_item__';
  var FunctionSetSelectedItems = '__function_set_selected_items__';
  var FunctionSetActiveIndex = '__function_set_active_index__';
  var FunctionReset$1 = '__function_reset__';

  var stateChangeTypes$3 = /*#__PURE__*/Object.freeze({
    __proto__: null,
    SelectedItemClick: SelectedItemClick,
    SelectedItemKeyDownDelete: SelectedItemKeyDownDelete,
    SelectedItemKeyDownBackspace: SelectedItemKeyDownBackspace,
    SelectedItemKeyDownNavigationNext: SelectedItemKeyDownNavigationNext,
    SelectedItemKeyDownNavigationPrevious: SelectedItemKeyDownNavigationPrevious,
    DropdownKeyDownNavigationPrevious: DropdownKeyDownNavigationPrevious,
    DropdownKeyDownBackspace: DropdownKeyDownBackspace,
    DropdownClick: DropdownClick,
    FunctionAddSelectedItem: FunctionAddSelectedItem,
    FunctionRemoveSelectedItem: FunctionRemoveSelectedItem,
    FunctionSetSelectedItems: FunctionSetSelectedItems,
    FunctionSetActiveIndex: FunctionSetActiveIndex,
    FunctionReset: FunctionReset$1
  });

  /* eslint-disable complexity */

  function downshiftMultipleSelectionReducer(state, action) {
    var type = action.type,
        index = action.index,
        props = action.props,
        selectedItem = action.selectedItem;
    var activeIndex = state.activeIndex,
        selectedItems = state.selectedItems;
    var changes;

    switch (type) {
      case SelectedItemClick:
        changes = {
          activeIndex: index
        };
        break;

      case SelectedItemKeyDownNavigationPrevious:
        changes = {
          activeIndex: activeIndex - 1 < 0 ? 0 : activeIndex - 1
        };
        break;

      case SelectedItemKeyDownNavigationNext:
        changes = {
          activeIndex: activeIndex + 1 >= selectedItems.length ? -1 : activeIndex + 1
        };
        break;

      case SelectedItemKeyDownBackspace:
      case SelectedItemKeyDownDelete:
        {
          var newActiveIndex = activeIndex;

          if (selectedItems.length === 1) {
            newActiveIndex = -1;
          } else if (activeIndex === selectedItems.length - 1) {
            newActiveIndex = selectedItems.length - 2;
          }

          changes = _extends({
            selectedItems: [].concat(selectedItems.slice(0, activeIndex), selectedItems.slice(activeIndex + 1))
          }, {
            activeIndex: newActiveIndex
          });
          break;
        }

      case DropdownKeyDownNavigationPrevious:
        changes = {
          activeIndex: selectedItems.length - 1
        };
        break;

      case DropdownKeyDownBackspace:
        changes = {
          selectedItems: selectedItems.slice(0, selectedItems.length - 1)
        };
        break;

      case FunctionAddSelectedItem:
        changes = {
          selectedItems: [].concat(selectedItems, [selectedItem])
        };
        break;

      case DropdownClick:
        changes = {
          activeIndex: -1
        };
        break;

      case FunctionRemoveSelectedItem:
        {
          var _newActiveIndex = activeIndex;
          var selectedItemIndex = selectedItems.indexOf(selectedItem);

          if (selectedItems.length === 1) {
            _newActiveIndex = -1;
          } else if (selectedItemIndex === selectedItems.length - 1) {
            _newActiveIndex = selectedItems.length - 2;
          }

          changes = _extends({
            selectedItems: [].concat(selectedItems.slice(0, selectedItemIndex), selectedItems.slice(selectedItemIndex + 1))
          }, {
            activeIndex: _newActiveIndex
          });
          break;
        }

      case FunctionSetSelectedItems:
        {
          var newSelectedItems = action.selectedItems;
          changes = {
            selectedItems: newSelectedItems
          };
          break;
        }

      case FunctionSetActiveIndex:
        {
          var _newActiveIndex2 = action.activeIndex;
          changes = {
            activeIndex: _newActiveIndex2
          };
          break;
        }

      case FunctionReset$1:
        changes = {
          activeIndex: getDefaultValue$1(props, 'activeIndex'),
          selectedItems: getDefaultValue$1(props, 'selectedItems')
        };
        break;

      default:
        throw new Error('Reducer called without proper action type.');
    }

    return _extends({}, state, changes);
  }

  useMultipleSelection.stateChangeTypes = stateChangeTypes$3;

  function useMultipleSelection(userProps) {
    if (userProps === void 0) {
      userProps = {};
    }

    validatePropTypes$2(userProps, useMultipleSelection); // Props defaults and destructuring.

    var props = _extends({}, defaultProps$3, userProps);

    var getA11yRemovalMessage = props.getA11yRemovalMessage,
        itemToString = props.itemToString,
        environment = props.environment,
        keyNavigationNext = props.keyNavigationNext,
        keyNavigationPrevious = props.keyNavigationPrevious; // Reducer init.

    var _useControlledReducer = useControlledReducer(downshiftMultipleSelectionReducer, getInitialState$2(props), props),
        state = _useControlledReducer[0],
        dispatch = _useControlledReducer[1];

    var activeIndex = state.activeIndex,
        selectedItems = state.selectedItems; // Refs.

    var isInitialMountRef = react.useRef(true);
    var dropdownRef = react.useRef(null);
    var previousSelectedItemsRef = react.useRef(selectedItems);
    var selectedItemRefs = react.useRef();
    selectedItemRefs.current = [];
    var latest = useLatestRef({
      state: state,
      props: props
    }); // Effects.

    /* Sets a11y status message on changes in selectedItem. */

    react.useEffect(function () {
      if (isInitialMountRef.current) {
        return;
      }

      if (selectedItems.length < previousSelectedItemsRef.current.length) {
        var removedSelectedItem = previousSelectedItemsRef.current.find(function (item) {
          return selectedItems.indexOf(item) < 0;
        });
        setStatus(getA11yRemovalMessage({
          itemToString: itemToString,
          resultCount: selectedItems.length,
          removedSelectedItem: removedSelectedItem,
          activeIndex: activeIndex,
          activeSelectedItem: selectedItems[activeIndex]
        }), environment.document);
      }

      previousSelectedItemsRef.current = selectedItems; // eslint-disable-next-line react-hooks/exhaustive-deps
    }, [selectedItems.length]); // Sets focus on active item.

    react.useEffect(function () {
      if (isInitialMountRef.current) {
        return;
      }

      if (activeIndex === -1 && dropdownRef.current) {
        dropdownRef.current.focus();
      } else if (selectedItemRefs.current[activeIndex]) {
        selectedItemRefs.current[activeIndex].focus();
      }
    }, [activeIndex]);
    useControlPropsValidator({
      isInitialMount: isInitialMountRef.current,
      props: props,
      state: state
    });
    var setGetterPropCallInfo = useGetterPropsCalledChecker('getDropdownProps'); // Make initial ref false.

    react.useEffect(function () {
      isInitialMountRef.current = false;
    }, []); // Event handler functions.

    var selectedItemKeyDownHandlers = react.useMemo(function () {
      var _ref;

      return _ref = {}, _ref[keyNavigationPrevious] = function () {
        dispatch({
          type: SelectedItemKeyDownNavigationPrevious
        });
      }, _ref[keyNavigationNext] = function () {
        dispatch({
          type: SelectedItemKeyDownNavigationNext
        });
      }, _ref.Delete = function Delete() {
        dispatch({
          type: SelectedItemKeyDownDelete
        });
      }, _ref.Backspace = function Backspace() {
        dispatch({
          type: SelectedItemKeyDownBackspace
        });
      }, _ref;
    }, [dispatch, keyNavigationNext, keyNavigationPrevious]);
    var dropdownKeyDownHandlers = react.useMemo(function () {
      var _ref2;

      return _ref2 = {}, _ref2[keyNavigationPrevious] = function (event) {
        if (isKeyDownOperationPermitted(event)) {
          dispatch({
            type: DropdownKeyDownNavigationPrevious
          });
        }
      }, _ref2.Backspace = function Backspace(event) {
        if (isKeyDownOperationPermitted(event)) {
          dispatch({
            type: DropdownKeyDownBackspace
          });
        }
      }, _ref2;
    }, [dispatch, keyNavigationPrevious]); // Getter props.

    var getSelectedItemProps = react.useCallback(function (_temp) {
      var _extends2;

      var _ref3 = _temp === void 0 ? {} : _temp,
          _ref3$refKey = _ref3.refKey,
          refKey = _ref3$refKey === void 0 ? 'ref' : _ref3$refKey,
          ref = _ref3.ref,
          onClick = _ref3.onClick,
          onKeyDown = _ref3.onKeyDown,
          selectedItem = _ref3.selectedItem,
          index = _ref3.index,
          rest = _objectWithoutPropertiesLoose(_ref3, ["refKey", "ref", "onClick", "onKeyDown", "selectedItem", "index"]);

      var latestState = latest.current.state;
      var itemIndex = getItemIndex(index, selectedItem, latestState.selectedItems);

      if (itemIndex < 0) {
        throw new Error('Pass either selectedItem or index in getSelectedItemProps!');
      }

      return _extends((_extends2 = {}, _extends2[refKey] = handleRefs(ref, function (selectedItemNode) {
        if (selectedItemNode) {
          selectedItemRefs.current.push(selectedItemNode);
        }
      }), _extends2.tabIndex = index === latestState.activeIndex ? 0 : -1, _extends2.onClick = callAllEventHandlers(onClick, function selectedItemHandleClick() {
        dispatch({
          type: SelectedItemClick,
          index: index
        });
      }), _extends2.onKeyDown = callAllEventHandlers(onKeyDown, function selectedItemHandleKeyDown(event) {
        var key = normalizeArrowKey(event);

        if (key && selectedItemKeyDownHandlers[key]) {
          selectedItemKeyDownHandlers[key](event);
        }
      }), _extends2), rest);
    }, [dispatch, latest, selectedItemKeyDownHandlers]);
    var getDropdownProps = react.useCallback(function (_temp2, _temp3) {
      var _extends3;

      var _ref4 = _temp2 === void 0 ? {} : _temp2,
          _ref4$refKey = _ref4.refKey,
          refKey = _ref4$refKey === void 0 ? 'ref' : _ref4$refKey,
          ref = _ref4.ref,
          onKeyDown = _ref4.onKeyDown,
          onClick = _ref4.onClick,
          _ref4$preventKeyActio = _ref4.preventKeyAction,
          preventKeyAction = _ref4$preventKeyActio === void 0 ? false : _ref4$preventKeyActio,
          rest = _objectWithoutPropertiesLoose(_ref4, ["refKey", "ref", "onKeyDown", "onClick", "preventKeyAction"]);

      var _ref5 = _temp3 === void 0 ? {} : _temp3,
          _ref5$suppressRefErro = _ref5.suppressRefError,
          suppressRefError = _ref5$suppressRefErro === void 0 ? false : _ref5$suppressRefErro;

      setGetterPropCallInfo('getDropdownProps', suppressRefError, refKey, dropdownRef);
      return _extends((_extends3 = {}, _extends3[refKey] = handleRefs(ref, function (dropdownNode) {
        if (dropdownNode) {
          dropdownRef.current = dropdownNode;
        }
      }), _extends3), !preventKeyAction && {
        onKeyDown: callAllEventHandlers(onKeyDown, function dropdownHandleKeyDown(event) {
          var key = normalizeArrowKey(event);

          if (key && dropdownKeyDownHandlers[key]) {
            dropdownKeyDownHandlers[key](event);
          }
        }),
        onClick: callAllEventHandlers(onClick, function dropdownHandleClick() {
          dispatch({
            type: DropdownClick
          });
        })
      }, rest);
    }, [dispatch, dropdownKeyDownHandlers, setGetterPropCallInfo]); // returns

    var addSelectedItem = react.useCallback(function (selectedItem) {
      dispatch({
        type: FunctionAddSelectedItem,
        selectedItem: selectedItem
      });
    }, [dispatch]);
    var removeSelectedItem = react.useCallback(function (selectedItem) {
      dispatch({
        type: FunctionRemoveSelectedItem,
        selectedItem: selectedItem
      });
    }, [dispatch]);
    var setSelectedItems = react.useCallback(function (newSelectedItems) {
      dispatch({
        type: FunctionSetSelectedItems,
        selectedItems: newSelectedItems
      });
    }, [dispatch]);
    var setActiveIndex = react.useCallback(function (newActiveIndex) {
      dispatch({
        type: FunctionSetActiveIndex,
        activeIndex: newActiveIndex
      });
    }, [dispatch]);
    var reset = react.useCallback(function () {
      dispatch({
        type: FunctionReset$1
      });
    }, [dispatch]);
    return {
      getSelectedItemProps: getSelectedItemProps,
      getDropdownProps: getDropdownProps,
      addSelectedItem: addSelectedItem,
      removeSelectedItem: removeSelectedItem,
      setSelectedItems: setSelectedItems,
      setActiveIndex: setActiveIndex,
      reset: reset,
      selectedItems: selectedItems,
      activeIndex: activeIndex
    };
  }

  exports.default = Downshift;
  exports.resetIdCounter = resetIdCounter;
  exports.useCombobox = useCombobox;
  exports.useMultipleSelection = useMultipleSelection;
  exports.useSelect = useSelect;

  Object.defineProperty(exports, '__esModule', { value: true });

})));
//# sourceMappingURL=downshift.umd.js.map