15 lines
391 B
TypeScript
15 lines
391 B
TypeScript
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export type DateTuple = [number, number, number];
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export function datetuple(d: number): DateTuple {
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return [d / 12 / 30 | 0, (d / 30 | 0) % 12, d % 30]
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}
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export function datefmt(d: number): string {
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return datetuple(d).map(n => n + 1).join("/");
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}
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export function datefrom(y: number, m: number, d: number) {
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return (y - 1) * 12 * 30 + (m - 1) * 30 + (d - 1);
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}
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