vremel/dist/datetime/_compare.js

JavaScript date utility library for Temporal API

import { getConstructor, getTypeName, isInstant, isPlainDate, isPlainDateTime, isPlainMonthDay, isPlainTime, isPlainYearMonth, isZonedDateTime, } from "../type-utils.js";
export function compare(a, b) {
    if (isInstant(a) && isInstant(b)) {
        return getConstructor(a).compare(a, b);
    }
    if (isZonedDateTime(a) && isZonedDateTime(b)) {
        return getConstructor(a).compare(a, b);
    }
    if (isPlainDate(a) && isPlainDate(b)) {
        return getConstructor(a).compare(a, b);
    }
    if (isPlainTime(a) && isPlainTime(b)) {
        return getConstructor(a).compare(a, b);
    }
    if (isPlainDateTime(a) && isPlainDateTime(b)) {
        return getConstructor(a).compare(a, b);
    }
    if (isPlainYearMonth(a) && isPlainYearMonth(b)) {
        if (a.calendarId !== b.calendarId) {
            throw new Error("Can't compare PlainYearMonth with different calendar");
        }
        return getConstructor(a).compare(a, b);
    }
    if (isPlainMonthDay(a) || isPlainMonthDay(b)) {
        throw new Error("Can't compare PlainMonthDay");
    }
    throw new Error(`Can't compare ${getTypeName(a)} and ${getTypeName(b)}`);
}
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