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15 lines
348 B
Plaintext
15 lines
348 B
Plaintext
import { isNumber } from "./isNumber.mjs";
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import { isValidDate } from "./isValidDate.mjs";
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function isLeapYear(value) {
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let year = value;
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if (isValidDate(value)) {
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year = value.getFullYear();
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} else if (!isNumber(value)) {
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return false;
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}
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return year % 4 === 0 && year % 100 !== 0 || year % 400 === 0;
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}
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export {
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isLeapYear
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};
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