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@burglekitt/gmt

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Temporal-based date and time utilities with timezone support and polyfill integration

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import { Temporal } from "@js-temporal/polyfill"; import { isValidTime } from "../validate/index.js"; /** * Return the microsecond (0-999) for a given ISO 8601 time string. * * @param value ISO time string * @returns Microsecond (000-999) or "" on invalid input * * @example parseMicrosecondFromTime("12:30:45.123") // "123" * @example parseMicrosecondFromTime("12:30:45.000") // "000" * @example parseMicrosecondFromTime("invalid") // "" */ export function parseMicrosecondFromTime(value) { if (!isValidTime(value)) return ""; try { const time = Temporal.PlainTime.from(value); return time.microsecond.toString().padStart(3, "0"); } catch { return ""; } }