/** On-disk work directory segment under {@link RESOLVED_ASSETS_DIR} for the bundled HMR client runtime. */
export declare const HMR_RUNTIME_WORK_DIR_SEGMENT = "hmr-runtime";
/** Browser URL for the bundled HMR client runtime script. */
export declare const HMR_RUNTIME_SCRIPT_URL = "/_hmr_runtime.js";
/** WebSocket path used by the HMR client runtime for dev server events. */
export declare const HMR_WEBSOCKET_PATH = "/_hmr";
/**
 * Absolute work-directory path for HMR runtime artifacts under an app work dir.
 */
export declare function resolveHmrRuntimeWorkDir(workDir: string): string;