Index: node_modules/d3-time/src/second.js
===================================================================
--- node_modules/d3-time/src/second.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-time/src/second.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,14 @@
+import {timeInterval} from "./interval.js";
+import {durationSecond} from "./duration.js";
+
+export const second = timeInterval((date) => {
+  date.setTime(date - date.getMilliseconds());
+}, (date, step) => {
+  date.setTime(+date + step * durationSecond);
+}, (start, end) => {
+  return (end - start) / durationSecond;
+}, (date) => {
+  return date.getUTCSeconds();
+});
+
+export const seconds = second.range;