import type { FabricFreshnessChecker } from "./freshness.js";
import type { FabricSpeculationConfig, FabricSpeculationReplay, FabricSpeculationRuntime, FabricSpeculationServeResult, FabricSpeculationStats } from "./types.js";
/**
 * Turn-scoped store of pre-launched speculation promises.
 *
 * Compiled kernels decide admission, consume each entry once, classify both
 * serve checkpoints, and update accounting. The host owns keyed storage and
 * observes actual promise settlement, epochs, time, freshness and aborts.
 * Binding identity is part of the key, so an old binding cannot serve a new one.
 * The concurrency observation counts retained nonfailed entries, not every
 * unsettled external effect. Reset aborts work and advances the epoch.
 */
export declare class FabricSpeculationStore implements FabricSpeculationRuntime {
    #private;
    constructor(config: Pick<FabricSpeculationConfig, "maxConcurrent" | "maxEntries" | "entryTtlMs">);
    get epoch(): number;
    stats(): FabricSpeculationStats & {
        pending: number;
    };
    bumpEpoch(): void;
    /** Fence descriptor/argument preparation across resets, effects and invocation end. */
    captureLaunch(parentToolCallId: string): () => boolean;
    static key(parentToolCallId: string, ref: string, preparedArgs: Record<string, unknown>, bindingToken: string): string;
    /** Register and start work only after the compiled admission decision. */
    launch(parentToolCallId: string, ref: string, preparedArgs: Record<string, unknown>, execute: (signal: AbortSignal) => Promise<unknown>, freshness: FabricFreshnessChecker | undefined, replay: FabricSpeculationReplay, bindingToken: string): boolean;
    tryServe(parentToolCallId: string, ref: string, preparedArgs: Record<string, unknown>, bindingToken: string): Promise<FabricSpeculationServeResult>;
    /** Execution for this tool call finished: everything unserved is waste. */
    onInvocationEnd(parentToolCallId: string): void;
    /** Turn backstop: speculation never outlives a turn. */
    reset(): void;
}
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