@codecademy/gamut

Index: package/dist/DatePicker/utils/quickActions.js
===================================================================
--- package/dist/DatePicker/utils/quickActions.js
+++ package/dist/DatePicker/utils/quickActions.js
@@ -0,0 +1,92 @@
+import { capitalizeFirst } from '../Calendar/utils/format';
+import { stringifyLocale } from './locale';
+const getRelativeDisplayText = (num, timePeriod, locale) => {
+  const rtf = new Intl.RelativeTimeFormat(stringifyLocale(locale), {
+    numeric: 'auto'
+  });
+  return capitalizeFirst(rtf.format(num, timePeriod), locale);
+};
+export const getDefaultSingleQuickActions = locale => [{
+  num: -1,
+  timePeriod: 'day',
+  displayText: getRelativeDisplayText(-1, 'day', locale)
+}, {
+  num: 0,
+  timePeriod: 'day',
+  displayText: getRelativeDisplayText(0, 'day', locale)
+}, {
+  num: 1,
+  timePeriod: 'day',
+  displayText: getRelativeDisplayText(1, 'day', locale)
+}];
+export const getDefaultRangeQuickActions = translations => [{
+  num: -7,
+  timePeriod: 'day',
+  displayText: translations.last7DaysDisplayText
+}, {
+  num: -30,
+  timePeriod: 'day',
+  displayText: translations.last30DaysDisplayText
+}, {
+  num: -90,
+  timePeriod: 'day',
+  displayText: translations.last90DaysDisplayText
+}];
+
+/**
+ * Computes [start, end] for footer quick actions when `onClick` is omitted.
+ * `date` (local calendar day of `now`) is the anchor — returned as `end` unless the range
+ * is reordered (see below).
+ *
+ * **Rolling** offsets (no month/year boundaries):
+ * - **day**: `num` days from anchor.
+ * - **week**: `num × 7` days.
+ * - **month**: `num × 30` days.
+ * - **year**: `num × 365` days.
+ *
+ * **Range mode (`isRange: true`):** if `start` is after the anchor day, returns
+ * `{ start: anchor, end: computed }` so the interval runs forward. Otherwise
+ * `{ start: computed, end: anchor }` (past through “today”).
+ *
+ * **Single mode:** same return shape; the calendar uses `start` as the selected day.
+ */
+export const computeQuickAction = (num, timePeriod, isRange, now = new Date()) => {
+  const date = new Date(now.getFullYear(), now.getMonth(), now.getDate());
+  let start;
+  switch (timePeriod) {
+    case 'day':
+      {
+        start = new Date(date);
+        start.setDate(start.getDate() + num);
+        break;
+      }
+    case 'week':
+      {
+        start = new Date(date);
+        start.setDate(start.getDate() + num * 7);
+        break;
+      }
+    case 'month':
+      {
+        start = new Date(date);
+        start.setDate(start.getDate() + num * 30);
+        break;
+      }
+    case 'year':
+      {
+        start = new Date(date);
+        start.setDate(start.getDate() + num * 365);
+        break;
+      }
+  }
+  if (isRange && start.getTime() > date.getTime()) {
+    return {
+      start: date,
+      end: start
+    };
+  }
+  return {
+    start,
+    end: date
+  };
+};
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