/**
 * Cross-axis shift. `value` is a CSS length string (consumer numbers are
 * normalized to `${n}px`). `direction` is `'forwards'` (toward end) or
 * `'backwards'` (toward start).
 */
export type TCrossAxisShiftOffset = {
    value: string;
    direction: 'forwards' | 'backwards';
};
/**
 * Fully-resolved placement (internal). Use `getPlacement` for partial input.
 * `offset.gap` and `offset.crossAxisShift.value` are always CSS
 * length strings.
 */
export type TPlacement = {
    axis: 'block' | 'inline';
    edge: 'start' | 'end';
    align: 'start' | 'center' | 'end';
    offset: {
        gap: string;
        crossAxisShift: {
            value: string;
            direction: 'forwards' | 'backwards';
        };
    };
};
/**
 * Partial placement options. `offset.gap` and
 * `offset.crossAxisShift.value` accept either a number (pixels) or a
 * CSS length string (e.g. `token('space.100')`).
 *
 * The two offset axes are named for clarity at the call site:
 *   - `gap`     - distance away from the trigger along the placement axis
 *   - `crossAxisShift`  - nudge along the trigger edge (perpendicular to the placement axis)
 */
export type TPlacementOptions = {
    axis?: 'block' | 'inline';
    edge?: 'start' | 'end';
    align?: 'start' | 'center' | 'end';
    offset?: {
        gap?: number | string;
        crossAxisShift?: {
            value?: number | string;
            direction?: 'forwards' | 'backwards';
        };
    };
};
/**
 * Resolves a partial placement to its fully-specified form. Number offsets
 * are normalized to `${n}px` strings.
 *
 * Defaults: `axis: 'block'`, `edge: 'end'`, `align: 'center'`,
 * `offset.gap: token('space.100', '8px')`,
 * `offset.crossAxisShift: { value: '0px', direction: 'forwards' }`.
 */
export declare function getPlacement({ placement }: {
    placement: TPlacementOptions;
}): TPlacement;