Initial commit: Crypto trader application

frontend/node_modules/date-fns/startOfYesterday.mjs

@@ -0,0 +1,30 @@
+/**
+ * @name startOfYesterday
+ * @category Day Helpers
+ * @summary Return the start of yesterday.
+ * @pure false
+ *
+ * @description
+ * Return the start of yesterday.
+ *
+ * @returns The start of yesterday
+ *
+ * @example
+ * // If today is 6 October 2014:
+ * const result = startOfYesterday()
+ * //=> Sun Oct 5 2014 00:00:00
+ */
+export function startOfYesterday() {
+  const now = new Date();
+  const year = now.getFullYear();
+  const month = now.getMonth();
+  const day = now.getDate();
+
+  const date = new Date(0);
+  date.setFullYear(year, month, day - 1);
+  date.setHours(0, 0, 0, 0);
+  return date;
+}
+
+// Fallback for modularized imports:
+export default startOfYesterday;