/**
 * Typeguard function to make sure a passed width is a fraction width.
 * @internal
 */
export declare function isFractionWidth(width?: number | `${number}fr` | 'auto' | 'content' | {
    type: 'auto' | 'content';
    maxWidth?: number;
}): width is `${number}fr`;
/**
 * Typeguard function to make sure a passed width is an extended config.
 * @internal
 */
export declare function isWidthExtendedConfig(width?: number | `${number}fr` | 'auto' | 'content' | {
    type: 'auto' | 'content';
    maxWidth?: number;
}): width is {
    type: 'auto' | 'content';
    maxWidth?: number;
};