import { WidgetCompanionLayoutU, WidgetSidebarModeU } from '../types/widget-config';
/** The sidebar side after `auto` has been resolved against the host dir. */
export type WidgetSidebarSideResolvedU = 'left' | 'right';
export declare const DEFAULT_COMPANION_LAYOUTS: readonly ["compact", "sidebar", "fullscreen"];
/**
 * Resolve the layouts available to the companion. Configured order is part of
 * the public contract, so it is preserved while duplicates and invalid runtime
 * values are discarded. An omitted or unusable list falls back to every
 * layout, keeping the result non-empty for all consumers.
 */
export declare function normalizeCompanionLayouts(layouts?: unknown): readonly WidgetCompanionLayoutU[];
/** Choose an allowed initial/fallback layout for the companion shell. */
export declare function resolveCompanionDefaultLayout(configuredDefault: unknown, allowedLayouts: readonly WidgetCompanionLayoutU[]): WidgetCompanionLayoutU;
/**
 * Resolve the physical edge the sidebar occupies. `auto` (and any unusable
 * runtime value) follows the host document's direction — the inline-end edge,
 * which is the historical behavior — while an explicit side wins in both
 * directions.
 */
export declare function resolveSidebarSide(side: unknown, dir: string): WidgetSidebarSideResolvedU;
/** Resolve how the sidebar coexists with the page; anything but `docked` floats. */
export declare function resolveSidebarMode(mode: unknown): WidgetSidebarModeU;
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