47 lines
1.8 KiB
TypeScript
47 lines
1.8 KiB
TypeScript
import type { ISOFormatOptions } from "./types.js";
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/**
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* The {@link formatISO} function options.
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*/
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export interface FormatISOOptions extends ISOFormatOptions {}
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/**
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* @name formatISO
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* @category Common Helpers
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* @summary Format the date according to the ISO 8601 standard (https://support.sas.com/documentation/cdl/en/lrdict/64316/HTML/default/viewer.htm#a003169814.htm).
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*
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* @description
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* Return the formatted date string in ISO 8601 format. Options may be passed to control the parts and notations of the date.
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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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* @param options - An object with options.
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*
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* @returns The formatted date string (in loca.l time zone)
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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 ISO 8601 format (local time zone is UTC):
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* const result = formatISO(new Date(2019, 8, 18, 19, 0, 52))
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* //=> '2019-09-18T19:00:52Z'
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*
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* @example
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* // Represent 18 September 2019 in ISO 8601, short format (local time zone is UTC):
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* const result = formatISO(new Date(2019, 8, 18, 19, 0, 52), { format: 'basic' })
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* //=> '20190918T190052'
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*
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* @example
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* // Represent 18 September 2019 in ISO 8601 format, date only:
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* const result = formatISO(new Date(2019, 8, 18, 19, 0, 52), { representation: 'date' })
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* //=> '2019-09-18'
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*
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* @example
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* // Represent 18 September 2019 in ISO 8601 format, time only (local time zone is UTC):
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* const result = formatISO(new Date(2019, 8, 18, 19, 0, 52), { representation: 'time' })
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* //=> '19:00:52Z'
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*/
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export declare function formatISO<DateType extends Date>(
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date: DateType | number | string,
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options?: FormatISOOptions,
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): string;
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