/** Width variants — constrain (or unconstrain) a block-level component's max-width. */
export interface WidthVariants {
    /** Constrain to narrow max-width (`--width-narrow`). */
    narrow?: boolean | undefined;
    /** Constrain to wide max-width (`--width-wide`). */
    wide?: boolean | undefined;
    /** Take the full available width — removes any default max-width constraint. */
    full?: boolean | undefined;
}
export type Width = keyof WidthVariants;
export declare function getWidthClass(width: Width | WidthVariants): string | undefined;