32 lines
735 B
TypeScript
32 lines
735 B
TypeScript
const ISO_TZ_RE = /(Z|[+-]\d{2}:?\d{2})$/i;
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const ISO_DATE_RE = /^\d{4}-\d{2}-\d{2}$/;
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const ISO_DATE_TIME_RE = /^\d{4}-\d{2}-\d{2}T/;
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function normalizeUtcIso(raw: string) {
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if (ISO_TZ_RE.test(raw)) {
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return raw;
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}
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if (ISO_DATE_RE.test(raw)) {
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return `${raw}T00:00:00Z`;
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}
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if (ISO_DATE_TIME_RE.test(raw)) {
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return `${raw}Z`;
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}
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return raw;
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}
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export function parseAbsoluteTimeMs(input: string): number | null {
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const raw = input.trim();
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if (!raw) {
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return null;
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}
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if (/^\d+$/.test(raw)) {
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const n = Number(raw);
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if (Number.isFinite(n) && n > 0) {
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return Math.floor(n);
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}
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}
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const parsed = Date.parse(normalizeUtcIso(raw));
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return Number.isFinite(parsed) ? parsed : null;
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}
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