import type { JsRuntime } from "./runtime.ts";
import type { RuntimeContentItem } from "../code-mode/types.ts";
import type { JsInput, JsOutcome, JsSnapshot } from "./protocol.ts";
interface Callbacks {
    output(items: RuntimeContentItem[]): void;
    notify(text: string): void;
    yield(): void;
    request(id: number, name: string, value: unknown): Promise<unknown>;
}
/** A compiled WASM module is shared; each kernel owns a separate VM and thread. */
export declare class JsKernel {
    private readonly worker;
    private readonly interrupt;
    private next;
    private active;
    private failure;
    private stopping;
    static create(runtime: JsRuntime, heapBytes: number, snapshot?: JsSnapshot, managementClone?: boolean): Promise<JsKernel>;
    private constructor();
    execute(input: JsInput, callbacks: Callbacks): Promise<JsOutcome>;
    stop(): Promise<void>;
    private fail;
    private request;
}
export {};