54 lines
1.6 KiB
JavaScript
54 lines
1.6 KiB
JavaScript
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import { constructFrom } from "./constructFrom.js";
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/**
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* @name transpose
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* @category Generic Helpers
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* @summary Transpose the date to the given constructor.
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*
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* @description
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* The function transposes the date to the given constructor. It helps you
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* to transpose the date in the system time zone to say `UTCDate` or any other
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* date extension.
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*
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* @typeParam InputDate - The input `Date` type derived from the passed argument.
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* @typeParam ResultDate - The result `Date` type derived from the passed constructor.
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*
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* @param date - The date to use values from
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* @param constructor - The date constructor to use
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*
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* @returns Date transposed to the given constructor
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*
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* @example
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* // Create July 10, 2022 00:00 in locale time zone
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* const date = new Date(2022, 6, 10)
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* //=> 'Sun Jul 10 2022 00:00:00 GMT+0800 (Singapore Standard Time)'
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*
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* @example
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* // Transpose the date to July 10, 2022 00:00 in UTC
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* transpose(date, UTCDate)
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* //=> 'Sun Jul 10 2022 00:00:00 GMT+0000 (Coordinated Universal Time)'
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*/
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export function transpose(date, constructor) {
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const date_ = isConstructor(constructor)
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? new constructor(0)
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: constructFrom(constructor, 0);
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date_.setFullYear(date.getFullYear(), date.getMonth(), date.getDate());
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date_.setHours(
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date.getHours(),
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date.getMinutes(),
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date.getSeconds(),
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date.getMilliseconds(),
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);
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return date_;
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}
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function isConstructor(constructor) {
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return (
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typeof constructor === "function" &&
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constructor.prototype?.constructor === constructor
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);
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}
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// Fallback for modularized imports:
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export default transpose;
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