import type { FabricSpeculationConfig } from "../config.js";
import type { FabricMediaBlock } from "../protocol.js";
export type { FabricSpeculationConfig };
/** One literal-argument call discovered in the partially streamed program. */
export interface FabricSpeculationCandidate {
    ref: string;
    args: Record<string, unknown>;
}
/** Side-channel outputs captured during a speculative provider invoke, replayed into the real audit when served. */
export interface FabricSpeculationReplay {
    media?: FabricMediaBlock[];
    mediaNote?: string;
    updatedArgs?: Record<string, unknown>;
    preview?: unknown;
}
export interface FabricSpeculationStats {
    launched: number;
    served: number;
    epochInvalidated: number;
    freshnessInvalidated: number;
    failed: number;
    wasted: number;
    skipped: number;
}
export type FabricSpeculationServeResult = {
    hit: true;
    value: unknown;
    replay: FabricSpeculationReplay;
} | {
    hit: false;
    reason: "absent" | "epoch" | "freshness" | "failed";
};
/**
 * Host-side store consumed by ActionRegistry.invoke. Implemented by
 * FabricSpeculationStore; declared structurally so the registry never imports
 * the speculation package.
 */
export interface FabricSpeculationRuntime {
    tryServe(parentToolCallId: string, ref: string, preparedArgs: Record<string, unknown>): Promise<FabricSpeculationServeResult>;
    bumpEpoch(): void;
    onInvocationEnd?(parentToolCallId: string): void;
}
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