/**
 * Returns the `fallbackWidth` if the provided `defaultWidthProp` is not an integer value.
 */
export declare function useSafeDefaultWidth({ defaultWidthProp, fallbackDefaultWidth, slotName, }: {
    /**
     * The `defaultWidth` passed in by the app.
     */
    defaultWidthProp: number;
    /**
     * The fallback value for `defaultWidth` if `defaultWidthProp` is invalid.
     */
    fallbackDefaultWidth: number;
    /**
     * The name of the slot, used for the dev-time console error.
     */
    slotName: string;
}): number;