text: function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
  
  function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }
  
  function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
  
  function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
  
  function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }
  
  function _iterableToArrayLimit(arr, i) { if (typeof Symbol === "undefined" || !(Symbol.iterator in Object(arr))) return; var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }
  
  function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }
  
  import accepts from 'attr-accept'; // Error codes
  
  export var FILE_INVALID_TYPE = 'file-invalid-type';
  export var FILE_TOO_LARGE = 'file-too-large';
  export var FILE_TOO_SMALL = 'file-too-small';
  export var TOO_MANY_FILES = 'too-many-files'; // File Errors
  
  export var getInvalidTypeRejectionErr = function getInvalidTypeRejectionErr(accept) {
    accept = Array.isArray(accept) && accept.length === 1 ? accept[0] : accept;
    var messageSuffix = Array.isArray(accept) ? "one of ".concat(accept.join(', ')) : accept;
    return {
      code: FILE_INVALID_TYPE,
      message: "File type must be ".concat(messageSuffix)
    };
  };
  export var getTooLargeRejectionErr = function getTooLargeRejectionErr(maxSize) {
    return {
      code: FILE_TOO_LARGE,
      message: "File is larger than ".concat(maxSize, " bytes")
    };
  };
  export var getTooSmallRejectionErr = function getTooSmallRejectionErr(minSize) {
    return {
      code: FILE_TOO_SMALL,
      message: "File is smaller than ".concat(minSize, " bytes")
    };
  };
  export var TOO_MANY_FILES_REJECTION = {
    code: TOO_MANY_FILES,
    message: 'Too many files'
  }; // Firefox versions prior to 53 return a bogus MIME type for every file drag, so dragovers with
  // that MIME type will always be accepted
  
  export function fileAccepted(file, accept) {
    var isAcceptable = file.type === 'application/x-moz-file' || accepts(file, accept);
    return [isAcceptable, isAcceptable ? null : getInvalidTypeRejectionErr(accept)];
  }
  export function fileMatchSize(file, minSize, maxSize) {
    if (isDefined(file.size)) {
      if (isDefined(minSize) && isDefined(maxSize)) {
        if (file.size > maxSize) return [false, getTooLargeRejectionErr(maxSize)];
        if (file.size < minSize) return [false, getTooSmallRejectionErr(minSize)];
      } else if (isDefined(minSize) && file.size < minSize) return [false, getTooSmallRejectionErr(minSize)];else if (isDefined(maxSize) && file.size > maxSize) return [false, getTooLargeRejectionErr(maxSize)];
    }
  
    return [true, null];
  }
  
  function isDefined(value) {
    return value !== undefined && value !== null;
  }
  
  export function allFilesAccepted(_ref) {
    var files = _ref.files,
        accept = _ref.accept,
        minSize = _ref.minSize,
        maxSize = _ref.maxSize,
        multiple = _ref.multiple,
        maxFiles = _ref.maxFiles;
  
    if (!multiple && files.length > 1 || multiple && maxFiles >= 1 && files.length > maxFiles) {
      return false;
    }
  
    return files.every(function (file) {
      var _fileAccepted = fileAccepted(file, accept),
          _fileAccepted2 = _slicedToArray(_fileAccepted, 1),
          accepted = _fileAccepted2[0];
  
      var _fileMatchSize = fileMatchSize(file, minSize, maxSize),
          _fileMatchSize2 = _slicedToArray(_fileMatchSize, 1),
          sizeMatch = _fileMatchSize2[0];
  
      return accepted && sizeMatch;
    });
  } // React's synthetic events has event.isPropagationStopped,
  // but to remain compatibility with other libs (Preact) fall back
  // to check event.cancelBubble
  
  export function isPropagationStopped(event) {
    if (typeof event.isPropagationStopped === 'function') {
      return event.isPropagationStopped();
    } else if (typeof event.cancelBubble !== 'undefined') {
      return event.cancelBubble;
    }
  
    return false;
  }
  export function isEvtWithFiles(event) {
    if (!event.dataTransfer) {
      return !!event.target && !!event.target.files;
    } // https://developer.mozilla.org/en-US/docs/Web/API/DataTransfer/types
    // https://developer.mozilla.org/en-US/docs/Web/API/HTML_Drag_and_Drop_API/Recommended_drag_types#file
  
  
    return Array.prototype.some.call(event.dataTransfer.types, function (type) {
      return type === 'Files' || type === 'application/x-moz-file';
    });
  }
  export function isKindFile(item) {
    return _typeof(item) === 'object' && item !== null && item.kind === 'file';
  } // allow the entire document to be a drag target
  
  export function onDocumentDragOver(event) {
    event.preventDefault();
  }
  
  function isIe(userAgent) {
    return userAgent.indexOf('MSIE') !== -1 || userAgent.indexOf('Trident/') !== -1;
  }
  
  function isEdge(userAgent) {
    return userAgent.indexOf('Edge/') !== -1;
  }
  
  export function isIeOrEdge() {
    var userAgent = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : window.navigator.userAgent;
    return isIe(userAgent) || isEdge(userAgent);
  }
  /**
   * This is intended to be used to compose event handlers
   * They are executed in order until one of them calls `event.isPropagationStopped()`.
   * Note that the check is done on the first invoke too,
   * meaning that if propagation was stopped before invoking the fns,
   * no handlers will be executed.
   *
   * @param {Function} fns the event hanlder functions
   * @return {Function} the event handler to add to an element
   */
  
  export function composeEventHandlers() {
    for (var _len = arguments.length, fns = new Array(_len), _key = 0; _key < _len; _key++) {
      fns[_key] = arguments[_key];
    }
  
    return function (event) {
      for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
        args[_key2 - 1] = arguments[_key2];
      }
  
      return fns.some(function (fn) {
        if (!isPropagationStopped(event) && fn) {
          fn.apply(void 0, [event].concat(args));
        }
  
        return isPropagationStopped(event);
      });
    };
  }