import { PipeTransform } from '@angular/core';
import * as i0 from "@angular/core";
/**
 * TimezoneFormatPipe formats a time zone string for display by replacing every
 * underscore in the raw IANA identifier with a space. This is a display-only
 * transform: for example `(UTC-04:00) America/New_York` is shown as
 * `(UTC-04:00) America/New York`. The underlying stored value (which the backend
 * expects with underscores) is never modified. Null, undefined, or empty inputs
 * return an empty string so templates can apply their own fallback.
 * @export
 * @class TimezoneFormatPipe
 * @implements {PipeTransform}
 */
export declare class TimezoneFormatPipe implements PipeTransform {
    /**
     * Replaces underscores with spaces in a time zone string for display.
     * @param {(string | null | undefined)} value - The raw time zone string, e.g. `(UTC-04:00) America/New_York`.
     * @return {string} The display-friendly time zone with spaces instead of underscores, or an empty string.
     * @memberof TimezoneFormatPipe
     */
    transform(value: string | null | undefined): string;
    static ɵfac: i0.ɵɵFactoryDeclaration<TimezoneFormatPipe, never>;
    static ɵpipe: i0.ɵɵPipeDeclaration<TimezoneFormatPipe, "timezoneFormat", true>;
}