A functional toolkit for authoring resource-leveling algorithms — compose constraint and scoring blocks, enumerate feasible schedules
feat(dates): DST-safe project date parse/format helpers
parseProjectDate / formatProjectDate centralize conversion between project
date strings and timestamps. Parsing guards against NaN so a malformed
date surfaces as a clear failure rather than a silent Invalid Date, and
the arithmetic is DST-safe so a date round-trips across spring-forward and
fall-back boundaries.
Russ T. Fugal
(Mar 9, 2026, 10:00 AM -0600)
53d80f65
5c7f902a
+20
+20
src/dateTime.ts
+20
src/dateTime.ts
···
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export function parseProjectDate(raw: string | null | undefined): Date | null {
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if (!raw) return null;
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const date = new Date(raw);
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return Number.isNaN(date.getTime()) ? null : date;
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}
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export function formatProjectDate(value: Date | null | undefined): string | null {
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if (!value) {
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return null;
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}
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const year = value.getFullYear();
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const month = String(value.getMonth() + 1).padStart(2, "0");
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const day = String(value.getDate()).padStart(2, "0");
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const hours = String(value.getHours()).padStart(2, "0");
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const minutes = String(value.getMinutes()).padStart(2, "0");
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const seconds = String(value.getSeconds()).padStart(2, "0");
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return `${year}-${month}-${day}T${hours}:${minutes}:${seconds}`;
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}