export declare const knownPropertyNames: readonly ["CALSCALE", "METHOD", "PRODID", "VERSION", "ATTACH", "CATEGORIES", "CLASS", "COMMENT", "DESCRIPTION", "GEO", "LOCATION", "PERCENT-COMPLETE", "PRIORITY", "RESOURCES", "STATUS", "SUMMARY", "COMPLETED", "DTEND", "DUE", "DTSTART", "DURATION", "FREEBUSY", "TRANSP", "TZID", "TZNAME", "TZOFFSETFROM", "TZOFFSETTO", "TZURL", "ATTENDEE", "CONTACT", "ORGANIZER", "RECURRENCE-ID", "RELATED-TO", "URL", "UID", "EXDATE", "RDATE", "RRULE", "ACTION", "REPEAT", "TRIGGER", "CREATED", "DTSTAMP", "LAST-MODIFIED", "SEQUENCE", "REQUEST-STATUS"];
export type KnownPropertyName = (typeof knownPropertyNames)[number];
export type AllowedPropertyName = KnownPropertyName | (`X-${string}` & {}) | (string & {});
/**
 * Check if a property name is known. A property name is known if it is present
 * in {@link knownPropertyNames}.
 * @param name The property name to check.
 * @returns If the name is a known property name.
 */
export declare function isKnownPropertyName(name: AllowedPropertyName): name is KnownPropertyName;
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