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