export declare enum TimeUnit {
    ms = "ms",
    millisecond = "millisecond",
    milliseconds = "milliseconds",
    s = "s",
    second = "second",
    seconds = "seconds",
    min = "min",
    minute = "minute",
    minutes = "minutes",
    hr = "hr",
    hour = "hour",
    hours = "hours",
    d = "d",
    day = "day",
    days = "days",
    wk = "wk",
    week = "week",
    weeks = "weeks",
    mo = "mo",
    month = "month",
    months = "months",
    yr = "yr",
    year = "year",
    years = "years"
}
export type TimeUnitsMillisAndSeconds = TimeUnit.ms | TimeUnit.millisecond | TimeUnit.milliseconds | TimeUnit.s | TimeUnit.second | TimeUnit.seconds;
export declare enum DateTimeFormatBasic {
    custom = "Custom",
    iso = "ISO-8601",
    milliseconds = "Unix (milliseconds)",
    seconds = "Unix (seconds)",
    sql = "SQL"
}
export type DateTimeFormatsMillisAndSecondsBasic = DateTimeFormatBasic.milliseconds | DateTimeFormatBasic.seconds | TimeUnitsMillisAndSeconds;
export declare enum AddRemoveOperationBasic {
    adding = "Adding",
    subtracting = "Subtracting"
}
export declare enum DateSourceBasic {
    playbookData = "Playbook Data",
    current = "Current Time"
}
export declare class TimeUnits {
    readonly abbreviated: TimeUnit;
    readonly singular: TimeUnit;
    readonly plural: TimeUnit;
    static readonly milliseconds: TimeUnits;
    static readonly seconds: TimeUnits;
    static readonly minutes: TimeUnits;
    static readonly hours: TimeUnits;
    static readonly days: TimeUnits;
    static readonly weeks: TimeUnits;
    static readonly months: TimeUnits;
    static readonly years: TimeUnits;
    private constructor();
    toString(): string;
    static parse(text: string): TimeUnits;
    static tryParse(text: string): TimeUnits | undefined;
    private static isTimeUnit;
    private static unitsEqual;
}