89 lines
2.8 KiB
JavaScript
89 lines
2.8 KiB
JavaScript
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import { defaultLocale } from "./_lib/defaultLocale.js";
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import { getDefaultOptions } from "./_lib/defaultOptions.js";
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import { normalizeDates } from "./_lib/normalizeDates.js";
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import { differenceInCalendarDays } from "./differenceInCalendarDays.js";
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import { format } from "./format.js";
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/**
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* The {@link formatRelative} function options.
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*/
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/**
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* @name formatRelative
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* @category Common Helpers
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* @summary Represent the date in words relative to the given base date.
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*
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* @description
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* Represent the date in words relative to the given base date.
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*
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* | Distance to the base date | Result |
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* |---------------------------|---------------------------|
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* | Previous 6 days | last Sunday at 04:30 AM |
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* | Last day | yesterday at 04:30 AM |
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* | Same day | today at 04:30 AM |
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* | Next day | tomorrow at 04:30 AM |
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* | Next 6 days | Sunday at 04:30 AM |
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* | Other | 12/31/2017 |
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*
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* @param date - The date to format
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* @param baseDate - The date to compare with
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* @param options - An object with options
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*
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* @returns The date in words
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*
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* @throws `date` must not be Invalid Date
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* @throws `baseDate` must not be Invalid Date
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* @throws `options.locale` must contain `localize` property
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* @throws `options.locale` must contain `formatLong` property
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* @throws `options.locale` must contain `formatRelative` property
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*
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* @example
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* // Represent the date of 6 days ago in words relative to the given base date. In this example, today is Wednesday
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* const result = formatRelative(subDays(new Date(), 6), new Date())
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* //=> "last Thursday at 12:45 AM"
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*/
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export function formatRelative(date, baseDate, options) {
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const [date_, baseDate_] = normalizeDates(options?.in, date, baseDate);
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const defaultOptions = getDefaultOptions();
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const locale = options?.locale ?? defaultOptions.locale ?? defaultLocale;
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const weekStartsOn =
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options?.weekStartsOn ??
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options?.locale?.options?.weekStartsOn ??
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defaultOptions.weekStartsOn ??
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defaultOptions.locale?.options?.weekStartsOn ??
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0;
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const diff = differenceInCalendarDays(date_, baseDate_);
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if (isNaN(diff)) {
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throw new RangeError("Invalid time value");
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}
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let token;
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if (diff < -6) {
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token = "other";
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} else if (diff < -1) {
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token = "lastWeek";
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} else if (diff < 0) {
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token = "yesterday";
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} else if (diff < 1) {
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token = "today";
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} else if (diff < 2) {
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token = "tomorrow";
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} else if (diff < 7) {
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token = "nextWeek";
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} else {
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token = "other";
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}
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const formatStr = locale.formatRelative(token, date_, baseDate_, {
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locale,
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weekStartsOn,
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});
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return format(date_, formatStr, { locale, weekStartsOn });
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}
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// Fallback for modularized imports:
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export default formatRelative;
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