add hw2

node_modules/dayjs/esm/plugin/calendar/index.js

@@ -0,0 +1,32 @@
+export default (function (o, c, d) {
+  var LT = 'h:mm A';
+  var L = 'MM/DD/YYYY';
+  var calendarFormat = {
+    lastDay: "[Yesterday at] " + LT,
+    sameDay: "[Today at] " + LT,
+    nextDay: "[Tomorrow at] " + LT,
+    nextWeek: "dddd [at] " + LT,
+    lastWeek: "[Last] dddd [at] " + LT,
+    sameElse: L
+  };
+  var proto = c.prototype;
+
+  proto.calendar = function (referenceTime, formats) {
+    var format = formats || this.$locale().calendar || calendarFormat;
+    var referenceStartOfDay = d(referenceTime || undefined).startOf('d');
+    var diff = this.diff(referenceStartOfDay, 'd', true);
+    var sameElse = 'sameElse';
+    /* eslint-disable no-nested-ternary */
+
+    var retVal = diff < -6 ? sameElse : diff < -1 ? 'lastWeek' : diff < 0 ? 'lastDay' : diff < 1 ? 'sameDay' : diff < 2 ? 'nextDay' : diff < 7 ? 'nextWeek' : sameElse;
+    /* eslint-enable no-nested-ternary */
+
+    var currentFormat = format[retVal] || calendarFormat[retVal];
+
+    if (typeof currentFormat === 'function') {
+      return currentFormat.call(this, d());
+    }
+
+    return this.format(currentFormat);
+  };
+});