go integration and wikipedia

frontend/node_modules/date-fns/isYesterday.mjs

@@ -0,0 +1,30 @@
+import { constructNow } from "./constructNow.mjs";
+import { isSameDay } from "./isSameDay.mjs";
+import { subDays } from "./subDays.mjs";
+
+/**
+ * @name isYesterday
+ * @category Day Helpers
+ * @summary Is the given date yesterday?
+ * @pure false
+ *
+ * @description
+ * Is the given date yesterday?
+ *
+ * @typeParam DateType - The `Date` type, the function operates on. Gets inferred from passed arguments. Allows to use extensions like [`UTCDate`](https://github.com/date-fns/utc).
+ *
+ * @param date - The date to check
+ *
+ * @returns The date is yesterday
+ *
+ * @example
+ * // If today is 6 October 2014, is 5 October 14:00:00 yesterday?
+ * const result = isYesterday(new Date(2014, 9, 5, 14, 0))
+ * //=> true
+ */
+export function isYesterday(date) {
+  return isSameDay(date, subDays(constructNow(date), 1));
+}
+
+// Fallback for modularized imports:
+export default isYesterday;