import { buildMessage, ValidateBy } from '../common/ValidateBy';
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export var IS_TIMEZONE = 'isTimeZone';
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/**
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* Checks if the string represents a valid IANA timezone
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* If the given value is not a valid IANA timezone, then it returns false.
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*/
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export function isTimeZone(value) {
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try {
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if (typeof value !== 'string') {
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return false;
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}
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/** Specifying an invalid time-zone will raise a `RangeError: Invalid time zone specified` error. */
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Intl.DateTimeFormat(undefined, { timeZone: value });
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return true;
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}
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catch (exception) {
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return false;
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}
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}
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/**
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* Checks if the string represents a valid IANA timezone
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* If the given value is not a valid IANA timezone, then it returns false.
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*/
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export function IsTimeZone(validationOptions) {
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return ValidateBy({
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name: IS_TIMEZONE,
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validator: {
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validate: function (value, args) { return isTimeZone(value); },
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defaultMessage: buildMessage(function (eachPrefix) { return eachPrefix + '$property must be a valid IANA time-zone'; }, validationOptions),
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},
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}, validationOptions);
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}
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//# sourceMappingURL=IsTimeZone.js.map
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