/**
 * Bun (and Node-compatible) platform for the SDK core. Selected by
 * `#platform` for every export condition except `burger`. The bodies here
 * were moved verbatim from `src/index.ts`; behaviour is unchanged.
 */
import type { AppMemorySample, HostConnection, HostConnectionHandlers, InvocationContextStore, NodeAppCtx } from "./types.js";
export declare const platformName: "bun" | "burger";
export declare const isMainThread: boolean;
export declare const DEFAULT_SQLITE_CACHE_SIZE_KB: number;
/** @internal exported for unit tests; not part of the public SDK surface. */
export declare function _resolveCtx(): NodeAppCtx;
/** Context captured once at SDK import time. */
export declare const appCtx: NodeAppCtx;
/** @internal test-only export */
export declare function _testRunNodeAppPath(): string | undefined;
/** @internal test-only export; also the production exit pathway. */
export declare function _testExitWorker(code: number, mainThread: boolean, exit?: (code: number) => never): void;
/** Exit this app: the process on the main thread, the worker otherwise. */
export declare function exitApp(code: number): void;
/** Exit with an error when the host did not provide `NODE_APP_SOCKET`. */
export declare function assertHostEndpoint(): void;
/**
 * Connect to the host over the per-app Unix socket and speak the
 * newline-delimited JSON protocol. Frames that arrive in one chunk are
 * handled in order; a frame's handler finishing is awaited before the next
 * frame of the same chunk is dispatched.
 */
export declare function connectToHost(handlers: HostConnectionHandlers): HostConnection;
export declare function createInvocationContextStore<T>(): InvocationContextStore<T>;
/** @internal Exact isolate sample used by the IPC timer and unit tests. */
export declare function _sampleMemory(): AppMemorySample;
export declare function _captureHeapSnapshotTo(path: string, generate?: () => ArrayBuffer, write?: (path: string, bytes: ArrayBuffer) => Promise<number>): Promise<{
    size_bytes: number;
}>;