bump memoize and migrate the fork

.size-snapshot.json

@@ -1,25 +1,25 @@
 {
   "./dist/react-big-calendar.js": {
-    "bundled": 508624,
-    "minified": 149246,
-    "gzipped": 45937
+    "bundled": 506890,
+    "minified": 148898,
+    "gzipped": 45540
   },
   "./dist/react-big-calendar.min.js": {
-    "bundled": 445192,
-    "minified": 130121,
-    "gzipped": 41450
+    "bundled": 444058,
+    "minified": 130004,
+    "gzipped": 41140
   },
   "dist/react-big-calendar.esm.js": {
-    "bundled": 173889,
-    "minified": 82988,
-    "gzipped": 20692,
+    "bundled": 173920,
+    "minified": 82985,
+    "gzipped": 20693,
     "treeshaked": {
       "rollup": {
-        "code": 60296,
+        "code": 60293,
         "import_statements": 1562
       },
       "webpack": {
-        "code": 64942
+        "code": 64778
       }
     }
   }

lib/DayColumn.js

@@ -455,16 +455,16 @@ var DayColumn =
         localizer = _this$props3.localizer,
         _this$props3$getters = _this$props3.getters,
         dayProp = _this$props3$getters.dayProp,
-        getters = (0,
-        _objectWithoutPropertiesLoose2.default)(_this$props3$getters, [
-          'dayProp',
-        ]),
+        getters = (0, _objectWithoutPropertiesLoose2.default)(
+          _this$props3$getters,
+          ['dayProp']
+        ),
         _this$props3$componen = _this$props3.components,
         EventContainer = _this$props3$componen.eventContainerWrapper,
-        components = (0,
-        _objectWithoutPropertiesLoose2.default)(_this$props3$componen, [
-          'eventContainerWrapper',
-        ])
+        components = (0, _objectWithoutPropertiesLoose2.default)(
+          _this$props3$componen,
+          ['eventContainerWrapper']
+        )
       var slotMetrics = this.slotMetrics
       var _this$state = this.state,
         selecting = _this$state.selecting,

lib/EventCell.js

@@ -116,7 +116,7 @@ var EventCell =
           'div',
           (0, _extends2.default)({}, props, {
             tabIndex: 0,
-            style: (0, _extends2.default)({}, userProps.style, {}, style),
+            style: (0, _extends2.default)({}, userProps.style, style),
             className: (0, _clsx.default)(
               'rbc-event',
               className,

lib/EventRowMixin.js

@@ -13,6 +13,7 @@ var _EventCell = _interopRequireDefault(require('./EventCell'))
 
 var _selection = require('./utils/selection')
 
+/* eslint-disable react/prop-types */
 var _default = {
   propTypes: {
     slotMetrics: _propTypes.default.object.isRequired,

lib/Popup.js

@@ -95,7 +95,7 @@ var Popup =
       return _react.default.createElement(
         'div',
         {
-          style: (0, _extends2.default)({}, this.props.style, {}, style),
+          style: (0, _extends2.default)({}, this.props.style, style),
           className: 'rbc-overlay',
           ref: popperRef,
         },
@@ -156,12 +156,12 @@ Popup.propTypes =
             current: _propTypes.default.Element,
           }),
         ]),
+        /**
+         * The Overlay component, of react-overlays, creates a ref that is passed to the Popup, and
+         * requires proper ref forwarding to be used without error
+         */
       }
     : {}
-/**
- * The Overlay component, of react-overlays, creates a ref that is passed to the Popup, and
- * requires proper ref forwarding to be used without error
- */
 
 var _default = _react.default.forwardRef(function(props, ref) {
   return _react.default.createElement(

lib/Selection.js

@@ -558,14 +558,12 @@ function objectsCollide(nodeA, nodeB, tolerance) {
     _getBoundsForNode2$bo = _getBoundsForNode2.bottom,
     bBottom = _getBoundsForNode2$bo === void 0 ? bTop : _getBoundsForNode2$bo
 
-  return !(
-    // 'a' bottom doesn't touch 'b' top
-    (
-      aBottom - tolerance < bTop || // 'a' top doesn't touch 'b' bottom
-      aTop + tolerance > bBottom || // 'a' right doesn't touch 'b' left
-      aRight - tolerance < bLeft || // 'a' left doesn't touch 'b' right
-      aLeft + tolerance > bRight
-    )
+  return !// 'a' bottom doesn't touch 'b' top
+  (
+    aBottom - tolerance < bTop || // 'a' top doesn't touch 'b' bottom
+    aTop + tolerance > bBottom || // 'a' right doesn't touch 'b' left
+    aRight - tolerance < bLeft || // 'a' left doesn't touch 'b' right
+    aLeft + tolerance > bRight
   )
 }
 /**

lib/Views.js

@@ -19,14 +19,13 @@ var _Agenda = _interopRequireDefault(require('./Agenda'))
 
 var _VIEWS
 
-var VIEWS =
-  ((_VIEWS = {}),
-  (_VIEWS[_constants.views.MONTH] = _Month.default),
-  (_VIEWS[_constants.views.WEEK] = _Week.default),
-  (_VIEWS[_constants.views.WORK_WEEK] = _WorkWeek.default),
-  (_VIEWS[_constants.views.DAY] = _Day.default),
-  (_VIEWS[_constants.views.AGENDA] = _Agenda.default),
-  _VIEWS)
+var VIEWS = ((_VIEWS = {}),
+(_VIEWS[_constants.views.MONTH] = _Month.default),
+(_VIEWS[_constants.views.WEEK] = _Week.default),
+(_VIEWS[_constants.views.WORK_WEEK] = _WorkWeek.default),
+(_VIEWS[_constants.views.DAY] = _Day.default),
+(_VIEWS[_constants.views.AGENDA] = _Agenda.default),
+_VIEWS)
 var _default = VIEWS
 exports.default = _default
 module.exports = exports['default']

lib/addons/dragAndDrop/EventContainerWrapper.js

@@ -318,7 +318,6 @@ var EventContainerWrapper =
               accessors: (0, _extends2.default)(
                 {},
                 accessors,
-                {},
                 _common.dragAccessors
               ),
               continuesEarlier: startsBeforeDay,

lib/addons/dragAndDrop/WeekWrapper.js

@@ -359,7 +359,6 @@ var WeekWrapper =
               accessors: (0, _extends2.default)(
                 {},
                 accessors,
-                {},
                 _common.dragAccessors
               ),
             })

lib/addons/dragAndDrop/withDragAndDrop.js

@@ -35,6 +35,61 @@ var _WeekWrapper = _interopRequireDefault(require('./WeekWrapper'))
 
 var _common = require('./common')
 
+/**
+ * Creates a higher-order component (HOC) supporting drag & drop and optionally resizing
+ * of events:
+ *
+ * ```js
+ *    import Calendar from 'react-big-calendar'
+ *    import withDragAndDrop from 'react-big-calendar/lib/addons/dragAndDrop'
+ *    export default withDragAndDrop(Calendar)
+ * ```
+ *
+ * Set `resizable` to true in your calendar if you want events to be resizable.
+ *
+ * The HOC adds `onEventDrop`, `onEventResize`, and `onDragStart` callback properties if the events are
+ * moved or resized. These callbacks are called with these signatures:
+ *
+ * ```js
+ *    function onEventDrop({ event, start, end, allDay }) {...}
+ *    function onEventResize(type, { event, start, end, allDay }) {...}  // type is always 'drop'
+ *    function onDragStart({ event, action, direction }) {...}
+ * ```
+ *
+ * Moving and resizing of events has some subtlety which one should be aware of.
+ *
+ * In some situations, non-allDay events are displayed in "row" format where they
+ * are rendered horizontally. This is the case for ALL events in a month view. It
+ * is also occurs with multi-day events in a day or week view (unless `showMultiDayTimes`
+ * is set).
+ *
+ * When dropping or resizing non-allDay events into a the header area or when
+ * resizing them horizontally because they are displayed in row format, their
+ * times are preserved, only their date is changed.
+ *
+ * If you care about these corner cases, you can examine the `allDay` param suppled
+ * in the callback to determine how the user dropped or resized the event.
+ *
+ * Additionally, this HOC adds the callback props `onDropFromOutside` and `onDragOver`.
+ * By default, the calendar will not respond to outside draggable items being dropped
+ * onto it. However, if `onDropFromOutside` callback is passed, then when draggable
+ * DOM elements are dropped on the calendar, the callback will fire, receiving an
+ * object with start and end times, and an allDay boolean.
+ *
+ * If `onDropFromOutside` is passed, but `onDragOver` is not, any draggable event will be
+ * droppable  onto the calendar by default. On the other hand, if an `onDragOver` callback
+ * *is* passed, then it can discriminate as to whether a draggable item is droppable on the
+ * calendar. To designate a draggable item as droppable, call `event.preventDefault`
+ * inside `onDragOver`. If `event.preventDefault` is not called in the `onDragOver`
+ * callback, then the draggable item will not be droppable on the calendar.
+ *
+ * * ```js
+ *    function onDropFromOutside({ start, end, allDay }) {...}
+ *    function onDragOver(DragEvent: event) {...}
+ * ```
+ * @param {*} Calendar
+ * @param {*} backend
+ */
 function withDragAndDrop(Calendar) {
   var DragAndDropCalendar =
     /*#__PURE__*/

lib/localizer.js

@@ -74,12 +74,7 @@ var DateLocalizer = function DateLocalizer(spec) {
 exports.DateLocalizer = DateLocalizer
 
 function mergeWithDefaults(localizer, culture, formatOverrides, messages) {
-  var formats = (0, _extends2.default)(
-    {},
-    localizer.formats,
-    {},
-    formatOverrides
-  )
+  var formats = (0, _extends2.default)({}, localizer.formats, formatOverrides)
   return (0, _extends2.default)({}, localizer, {
     messages: messages,
     startOfWeek: function startOfWeek() {

lib/utils/DateSlotMetrics.js

@@ -22,7 +22,7 @@ var isSegmentInSlot = function isSegmentInSlot(seg, slot) {
 }
 
 var isEqual = function isEqual(a, b) {
-  return a.range === b.range && a.events === b.events
+  return a[0].range === b[0].range && a[0].events === b[0].events
 }
 
 function getSlotMetrics() {
@@ -61,7 +61,7 @@ function getSlotMetrics() {
       slots: range.length,
       clone: function clone(args) {
         var metrics = getSlotMetrics()
-        return metrics((0, _extends2.default)({}, options, {}, args))
+        return metrics((0, _extends2.default)({}, options, args))
       },
       getDateForSlot: function getDateForSlot(slotNumber) {
         return range[slotNumber]

lib/utils/messages.js

@@ -31,7 +31,7 @@ var defaultMessages = {
 }
 
 function messages(msgs) {
-  return (0, _extends2.default)({}, defaultMessages, {}, msgs)
+  return (0, _extends2.default)({}, defaultMessages, msgs)
 }
 
 module.exports = exports['default']

package.json

@@ -134,7 +134,7 @@
     "invariant": "^2.2.4",
     "lodash": "^4.17.11",
     "lodash-es": "^4.17.11",
-    "memoize-one": "^4.0.3",
+    "memoize-one": "5.0.4",
     "prop-types": "^15.6.2",
     "react-overlays": "^2.0.0-0",
     "uncontrollable": "^7.0.0"

src/utils/DateSlotMetrics.js

@@ -4,7 +4,8 @@ import { eventSegments, endOfRange, eventLevels } from './eventLevels'
 
 let isSegmentInSlot = (seg, slot) => seg.left <= slot && seg.right >= slot
 
-const isEqual = (a, b) => a.range === b.range && a.events === b.events
+const isEqual = (a, b) =>
+  a[0].range === b[0].range && a[0].events === b[0].events
 
 export function getSlotMetrics() {
   return memoize(options => {

yarn.lock

@@ -8531,10 +8531,10 @@ mem@^4.0.0:
     mimic-fn "^2.0.0"
     p-is-promise "^2.0.0"
 
-memoize-one@^4.0.3:
-  version "4.1.0"
-  resolved "https://registry.yarnpkg.com/memoize-one/-/memoize-one-4.1.0.tgz#a2387c58c03fff27ca390c31b764a79addf3f906"
-  integrity sha512-2GApq0yI/b22J2j9rhbrAlsHb0Qcz+7yWxeLG8h+95sl1XPUgeLimQSOdur4Vw7cUhrBHwaUZxWFZueojqNRzA==
+memoize-one@5.0.4:
+  version "5.0.4"
+  resolved "https://registry.yarnpkg.com/memoize-one/-/memoize-one-5.0.4.tgz#005928aced5c43d890a4dfab18ca908b0ec92cbc"
+  integrity sha512-P0z5IeAH6qHHGkJIXWw0xC2HNEgkx/9uWWBQw64FJj3/ol14VYdfVGWWr0fXfjhhv3TKVIqUq65os6O4GUNksA==
 
 memoizerific@^1.11.3:
   version "1.11.3"