deploy: v0.12 fix 存档key名

node_modules/react-day-picker/dist/cjs/helpers/getPreviousMonth.js

@@ -0,0 +1,38 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getPreviousMonth = getPreviousMonth;
+/**
+ * Returns the previous month the user can navigate to, based on the given
+ * options.
+ *
+ * The previous month is not always the previous calendar month:
+ *
+ * - If it is before the `calendarStartMonth`, it returns `undefined`.
+ * - If paged navigation is enabled, it skips back by the number of displayed
+ *   months.
+ *
+ * @param firstDisplayedMonth The first month currently displayed in the
+ *   calendar.
+ * @param calendarStartMonth The earliest month the user can navigate to.
+ * @param options Navigation options, including `numberOfMonths` and
+ *   `pagedNavigation`.
+ * @param dateLib The date library to use for date manipulation.
+ * @returns The previous month, or `undefined` if navigation is not possible.
+ */
+function getPreviousMonth(firstDisplayedMonth, calendarStartMonth, options, dateLib) {
+    if (options.disableNavigation) {
+        return undefined;
+    }
+    const { pagedNavigation, numberOfMonths } = options;
+    const { startOfMonth, addMonths, differenceInCalendarMonths } = dateLib;
+    const offset = pagedNavigation ? (numberOfMonths ?? 1) : 1;
+    const month = startOfMonth(firstDisplayedMonth);
+    if (!calendarStartMonth) {
+        return addMonths(month, -offset);
+    }
+    const monthsDiff = differenceInCalendarMonths(month, calendarStartMonth);
+    if (monthsDiff <= 0) {
+        return undefined;
+    }
+    return addMonths(month, -offset);
+}