/**
 * Formats a converted metric value for display.
 */
export declare class MetricFormat {
    /**
     * @param value The converted value.
     * @param locale The locale to format with (thousands separator, decimal mark).
     * @return The value rounded to the unit below 10, with one significant decimal under 10 (4 ft = 1.2 m, not 1 m),
     * or with a single significant digit when below 0.1 (so that it never shows as 0).
     */
    static format(value: number, locale: string): string;
}