export type FluidBoundaryContext = Record<string, unknown>;
export interface FluidBoundaryProvider {
    dispose?: (() => void) | undefined;
    readonly [method: string]: unknown;
}
/** Shared scheduler for particle-fluid boundary providers. */
export declare class FluidBoundarySet {
    boundaries: Set<FluidBoundaryProvider>;
    constructor();
    add<TBoundary extends FluidBoundaryProvider>(boundary: TBoundary): TBoundary;
    remove(boundary: FluidBoundaryProvider): boolean;
    run(method: string, renderer: unknown, fluid: unknown, context?: FluidBoundaryContext): Promise<void>;
    dispose(): void;
}