export interface Options {
    /**
     * Include plus sign for positive numbers. If the difference is exactly
     * zero a space character will be prepended instead for better alignment.
     * @default false
     */
    signed?: boolean;
    /**
     * Format the number as bits instead of bytes. This can be useful when,
     * for example, referring to bit rate.
     * @default false
     */
    bits?: boolean;
    /**
     * Format the number using the Binary Prefix instead of the SI Prefix.
     * This can be useful for presenting memory amounts.
     * However, this should not be used for presenting file sizes.
     * @default false
     */
    binary?: boolean;
    /**
     * The minimum number of fraction digits to display.
     * If neither `minimumFractionDigits` or `maximumFractionDigits` are set,
     * the default behavior is to round to 3 significant digits.
     */
    minimumFractionDigits?: number;
    /**
     * The maximum number of fraction digits to display.
     * If neither `minimumFractionDigits` or `maximumFractionDigits` are set,
     * the default behavior is to round to 3 significant digits.
     */
    maximumFractionDigits?: number;
    /**
     * Put a space between the number and unit.
     * @default true
     */
    space?: boolean;
    /**
     * Use a non-breaking space between the number and unit.
     * @default false
     */
    nonBreakingSpace?: boolean;
    /**
     * The locale to use for number formatting.
     * - If `true`, the system default locale is used.
     * - If a string, the value is expected to be a locale-key
     *   (for example: `de`).
     * - If an array of strings, the first supported locale will be used.
     * @default false
     */
    locale?: string | string[] | boolean;
    /**
     * Fixed width for the result string. The string will be padded with spaces
     * on the left if needed.
     */
    fixedWidth?: number;
}
export declare function humanBytes(num: number | bigint, options?: Options): string;
export default humanBytes;
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