24 lines
706 B
JavaScript
24 lines
706 B
JavaScript
import toDate from "../toDate/index.js";
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import requiredArgs from "../_lib/requiredArgs/index.js";
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/**
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* @name isFirstDayOfMonth
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* @category Month Helpers
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* @summary Is the given date the first day of a month?
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*
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* @description
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* Is the given date the first day of a month?
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*
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* @param {Date|Number} date - the date to check
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* @returns {Boolean} the date is the first day of a month
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* @throws {TypeError} 1 argument required
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*
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* @example
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* // Is 1 September 2014 the first day of a month?
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* const result = isFirstDayOfMonth(new Date(2014, 8, 1))
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* //=> true
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*/
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export default function isFirstDayOfMonth(dirtyDate) {
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requiredArgs(1, arguments);
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return toDate(dirtyDate).getDate() === 1;
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} |