import { type PlacementSpec } from "../dom/create-placement";
import type { SwishApp } from "../swish";
export type MountedPlacement = {
    spec: PlacementSpec;
    mount: () => void;
    unmount: () => void;
};
export declare class Placements {
    private readonly app;
    private mountedPlacements;
    constructor(app: SwishApp);
    mountConfigured(specs: PlacementSpec[]): void;
    create(spec: PlacementSpec): {
        mount(): void;
        unmount(): void;
    };
    applyPreview(specs?: PlacementSpec[]): void;
    get list(): readonly MountedPlacement[];
    private mountSpec;
    private unmountAll;
}