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node_modules/date-fns/formatRFC7231.js

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+import { addLeadingZeros } from "./_lib/addLeadingZeros.js";
+import { isValid } from "./isValid.js";
+import { toDate } from "./toDate.js";
+
+const days = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"];
+
+const months = [
+  "Jan",
+  "Feb",
+  "Mar",
+  "Apr",
+  "May",
+  "Jun",
+  "Jul",
+  "Aug",
+  "Sep",
+  "Oct",
+  "Nov",
+  "Dec",
+];
+
+/**
+ * @name formatRFC7231
+ * @category Common Helpers
+ * @summary Format the date according to the RFC 7231 standard (https://tools.ietf.org/html/rfc7231#section-7.1.1.1).
+ *
+ * @description
+ * Return the formatted date string in RFC 7231 format.
+ * The result will always be in UTC timezone.
+ *
+ * @param date - The original date
+ *
+ * @returns The formatted date string
+ *
+ * @throws `date` must not be Invalid Date
+ *
+ * @example
+ * // Represent 18 September 2019 in RFC 7231 format:
+ * const result = formatRFC7231(new Date(2019, 8, 18, 19, 0, 52))
+ * //=> 'Wed, 18 Sep 2019 19:00:52 GMT'
+ */
+export function formatRFC7231(date) {
+  const _date = toDate(date);
+
+  if (!isValid(_date)) {
+    throw new RangeError("Invalid time value");
+  }
+
+  const dayName = days[_date.getUTCDay()];
+  const dayOfMonth = addLeadingZeros(_date.getUTCDate(), 2);
+  const monthName = months[_date.getUTCMonth()];
+  const year = _date.getUTCFullYear();
+
+  const hour = addLeadingZeros(_date.getUTCHours(), 2);
+  const minute = addLeadingZeros(_date.getUTCMinutes(), 2);
+  const second = addLeadingZeros(_date.getUTCSeconds(), 2);
+
+  // Result variables.
+  return `${dayName}, ${dayOfMonth} ${monthName} ${year} ${hour}:${minute}:${second} GMT`;
+}
+
+// Fallback for modularized imports:
+export default formatRFC7231;