@blueprintjs/datetime
Version:
Components for interacting with dates and times
58 lines • 2.94 kB
JavaScript
/*
* Copyright 2022 Palantir Technologies, Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { __assign, __spreadArray } from "tslib";
import { formatInTimeZone } from "date-fns-tz";
import { getCurrentTimezone } from "./getTimezone";
import { MINIMAL_TIMEZONE_ITEMS, TIMEZONE_ITEMS } from "./timezoneItems";
var CURRENT_DATE = Date.now();
var LONG_NAME_FORMAT_STR = "zzzz";
var SHORT_NAME_FORMAT_STR = "zzz";
export function isValidTimezone(timeZone) {
if (timeZone === undefined) {
return false;
}
try {
Intl.DateTimeFormat(undefined, { timeZone: timeZone });
return true;
}
catch (e) {
return false;
}
}
export function getTimezoneShortName(tzIanaCode, date) {
return formatInTimeZone(date !== null && date !== void 0 ? date : CURRENT_DATE, tzIanaCode, SHORT_NAME_FORMAT_STR);
}
/**
* Augments a simple {@link Timezone} metadata object with long and short names formatted by `date-fns-tz`.
*/
export function getTimezoneNames(tz, date) {
if (date === void 0) { date = CURRENT_DATE; }
return __assign(__assign({}, tz), { longName: formatInTimeZone(date, tz.ianaCode, LONG_NAME_FORMAT_STR), shortName: formatInTimeZone(date, tz.ianaCode, SHORT_NAME_FORMAT_STR) });
}
export var mapTimezonesWithNames = function (date, timezones) { return timezones.map(function (tz) { return getTimezoneNames(tz, date); }); };
export function getInitialTimezoneItems(date, showLocalTimezone) {
var systemTimezone = getCurrentTimezone();
var localTimezone = showLocalTimezone
? TIMEZONE_ITEMS.find(function (timezone) { return timezone.ianaCode === systemTimezone; })
: undefined;
var localTimezoneItem = localTimezone !== undefined
? __assign(__assign({}, localTimezone), { longName: "Current timezone", shortName: formatInTimeZone(date !== null && date !== void 0 ? date : CURRENT_DATE, localTimezone.ianaCode, SHORT_NAME_FORMAT_STR) }) : undefined;
var minimalTimezoneItemsWithNames = mapTimezonesWithNames(date, MINIMAL_TIMEZONE_ITEMS).filter(function (tz) { return tz.ianaCode !== (localTimezoneItem === null || localTimezoneItem === void 0 ? void 0 : localTimezoneItem.ianaCode); });
return localTimezoneItem === undefined
? minimalTimezoneItemsWithNames
: __spreadArray([localTimezoneItem], minimalTimezoneItemsWithNames, true);
}
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