Index: node_modules/d3-time/src/week.js
===================================================================
--- node_modules/d3-time/src/week.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-time/src/week.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,56 @@
+import {timeInterval} from "./interval.js";
+import {durationMinute, durationWeek} from "./duration.js";
+
+function timeWeekday(i) {
+  return timeInterval((date) => {
+    date.setDate(date.getDate() - (date.getDay() + 7 - i) % 7);
+    date.setHours(0, 0, 0, 0);
+  }, (date, step) => {
+    date.setDate(date.getDate() + step * 7);
+  }, (start, end) => {
+    return (end - start - (end.getTimezoneOffset() - start.getTimezoneOffset()) * durationMinute) / durationWeek;
+  });
+}
+
+export const timeSunday = timeWeekday(0);
+export const timeMonday = timeWeekday(1);
+export const timeTuesday = timeWeekday(2);
+export const timeWednesday = timeWeekday(3);
+export const timeThursday = timeWeekday(4);
+export const timeFriday = timeWeekday(5);
+export const timeSaturday = timeWeekday(6);
+
+export const timeSundays = timeSunday.range;
+export const timeMondays = timeMonday.range;
+export const timeTuesdays = timeTuesday.range;
+export const timeWednesdays = timeWednesday.range;
+export const timeThursdays = timeThursday.range;
+export const timeFridays = timeFriday.range;
+export const timeSaturdays = timeSaturday.range;
+
+function utcWeekday(i) {
+  return timeInterval((date) => {
+    date.setUTCDate(date.getUTCDate() - (date.getUTCDay() + 7 - i) % 7);
+    date.setUTCHours(0, 0, 0, 0);
+  }, (date, step) => {
+    date.setUTCDate(date.getUTCDate() + step * 7);
+  }, (start, end) => {
+    return (end - start) / durationWeek;
+  });
+}
+
+export const utcSunday = utcWeekday(0);
+export const utcMonday = utcWeekday(1);
+export const utcTuesday = utcWeekday(2);
+export const utcWednesday = utcWeekday(3);
+export const utcThursday = utcWeekday(4);
+export const utcFriday = utcWeekday(5);
+export const utcSaturday = utcWeekday(6);
+
+export const utcSundays = utcSunday.range;
+export const utcMondays = utcMonday.range;
+export const utcTuesdays = utcTuesday.range;
+export const utcWednesdays = utcWednesday.range;
+export const utcThursdays = utcThursday.range;
+export const utcFridays = utcFriday.range;
+export const utcSaturdays = utcSaturday.range;