/** @noSelfInFile */
declare const noOverrideSymbol: unique symbol;
type NoOverride = {
    [noOverrideSymbol]: typeof noOverrideSymbol;
};
export type Destructor = {
    readonly __destructor: unique symbol;
};
export interface Destroyable {
    destroy(): void;
}
export declare abstract class AbstractDestroyable implements Destroyable {
    /**
     * An overriding function should always call the super one at the end of it,
     * in the following manner: `return super.onDestroy()`.
     */
    protected onDestroy(): Destructor;
    destroy(): boolean & NoOverride;
}
export {};