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fix(schedule): keep low-year LMT handoff safe

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This commit is contained in:
pku-xht
2026-08-08 06:03:14 +08:00
committed by Tianyi Cui
parent 7f5b301d5f
commit b37877d80b
2 changed files with 16 additions and 4 deletions
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packages/schedule/tool-schedule/src/domain.ts
+5 -1
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@@ -815,12 +815,15 @@ function ownedLowYearCronInstant(
function nextCronInstant(rule: ParsedCronRule, timeZone: string, after: number): number | undefined {
if (!rule.hasMatchingDate) return undefined
let cursor = after
const formatter = cronLocalFormatter(timeZone)
if (new Date(after).getUTCFullYear() <= CRONER_LOW_YEAR_CUTOFF) {
const lower = ownedLowYearCronInstant(rule, timeZone, after, 1)
if (lower !== undefined) return lower
if (localProjection(formatter, after).offset % 60_000 !== 0) {
cursor = cursorBeforeNextOffsetTransition(formatter, after)
}
}
const evaluator = cronEvaluator(rule, timeZone)
const formatter = cronLocalFormatter(timeZone)
let gapCorrections = 0
while (cursor < MAX_FOUR_DIGIT_YEAR_MS) {
const candidate = evaluator.nextRun(new Date(cursor))
@@ -840,6 +843,7 @@ function nextCronInstant(rule: ParsedCronRule, timeZone: string, after: number):
}
gapCorrections = 0
if (epoch > MAX_FOUR_DIGIT_YEAR_MS) return undefined
/* v8 ignore next 3 -- current IANA data leaves sub-minute LMT at its first transition. */
if (epoch % 60_000 !== 0) {
cursor = cursorBeforeNextOffsetTransition(formatter, epoch)
continue