16 lines
548 B
TypeScript
16 lines
548 B
TypeScript
const DATE_ONLY_PATTERN = /^\d{4}-\d{2}-\d{2}$/;
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const ISO_DATE_PREFIX_PATTERN = /^(\d{4}-\d{2}-\d{2})T/;
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export function normalizeDateOnly(value?: string | null): string | null | undefined {
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if (value == null || value === '') return value;
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if (DATE_ONLY_PATTERN.test(value)) return value;
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const isoPrefix = ISO_DATE_PREFIX_PATTERN.exec(value)?.[1];
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if (isoPrefix) {
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const date = new Date(value);
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if (!Number.isNaN(date.getTime())) return date.toISOString().slice(0, 10);
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}
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throw new Error(`无效日期格式: ${value}`);
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}
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