29 lines
767 B
JavaScript
29 lines
767 B
JavaScript
/**
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* @name startOfYesterday
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* @category Day Helpers
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* @summary Return the start of yesterday.
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* @pure false
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*
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* @description
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* Return the start of yesterday.
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*
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* > ⚠️ Please note that this function is not present in the FP submodule as
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* > it uses `new Date()` internally hence impure and can't be safely curried.
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*
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* @returns {Date} the start of yesterday
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*
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* @example
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* // If today is 6 October 2014:
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* const result = startOfYesterday()
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* //=> Sun Oct 5 2014 00:00:00
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*/
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export default function startOfYesterday() {
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var now = new Date();
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var year = now.getFullYear();
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var month = now.getMonth();
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var day = now.getDate();
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var date = new Date(0);
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date.setFullYear(year, month, day - 1);
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date.setHours(0, 0, 0, 0);
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return date;
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} |