import type { IJavaScriptModule } from '../types/javascript_module';
import type { IWebAssemblyModule } from '../types/wasm_module';
type CacheItem = IWebAssemblyModule | IJavaScriptModule;
/**
 * Cache for command modules so that each only has to be downloaded once.
 * A module can either be a `IJavaScriptModule` or a `IWebAssemblyModule`.
 * Here they are typed as `any` and the `CommandModuleLoader` deals with the specific types.
 */
export declare class CommandModuleCache {
    get(packageName: string, moduleName: string): CacheItem | undefined;
    has(packageName: string, moduleName: string): boolean;
    key(packageName: string, moduleName: string): string;
    set(packageName: string, moduleName: string, module: CacheItem): void;
    private _cache;
}
export {};