| 1 | import moment from 'moment';
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| 2 |
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| 3 | export default function isBeforeDay(a, b) {
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| 4 | if (!moment.isMoment(a) || !moment.isMoment(b)) return false;
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| 5 |
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| 6 | const aYear = a.year();
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| 7 | const aMonth = a.month();
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| 8 |
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| 9 | const bYear = b.year();
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| 10 | const bMonth = b.month();
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| 11 |
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| 12 | const isSameYear = aYear === bYear;
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| 13 | const isSameMonth = aMonth === bMonth;
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| 14 |
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| 15 | if (isSameYear && isSameMonth) return a.date() < b.date();
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| 16 | if (isSameYear) return aMonth < bMonth;
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| 17 | return aYear < bYear;
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| 18 | }
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