import { Schema } from "effect";
/** @experimental Pending operation the interpreter schedules before decide. */
export declare const PendingOperation: Schema.Struct<{
    readonly kind: Schema.Literals<readonly ["model", "tool", "memory", "compaction", "handoff", "send", "wait", "structured-output"]>;
    readonly key: Schema.String;
    readonly input: Schema.Unknown;
    readonly replayPolicy: Schema.Literals<readonly ["pure", "provider-idempotent", "never"]>;
}>;
/** @experimental */
export type PendingOperation = typeof PendingOperation.Type;
/** @experimental Production loop driver state stored in DriverCheckpoint.state. */
export declare const LoopDriverState: Schema.Struct<{
    readonly logicalOperationId: Schema.String;
    readonly sessionId: Schema.String;
    readonly modelCallOrdinal: Schema.Finite;
    readonly modelCallOrdinalStart: Schema.Finite;
    readonly handoff: Schema.optionalKey<Schema.Struct<{
        readonly root: Schema.String;
        readonly active: Schema.String;
        readonly path: Schema.$Array<Schema.Struct<{
            readonly handoffId: Schema.String;
            readonly source: Schema.String;
            readonly target: Schema.String;
            readonly turn: Schema.Finite;
            readonly reason: Schema.optionalKey<Schema.String>;
        }>>;
        readonly edgeCounts: Schema.$Array<Schema.Struct<{
            readonly source: Schema.String;
            readonly target: Schema.String;
            readonly count: Schema.Finite;
        }>>;
        readonly handoffCount: Schema.Finite;
        readonly pendingContinuation: Schema.optionalKey<Schema.Struct<{
            readonly prompt: Schema.Codec<import("effect/unstable/ai/Prompt").Prompt, import("effect/unstable/ai/Prompt").PromptEncoded, never, never>;
            readonly instructions: Schema.optionalKey<Schema.String>;
        }>>;
    }>>;
    readonly pending: Schema.optionalKey<Schema.Struct<{
        readonly kind: Schema.Literals<readonly ["model", "tool", "memory", "compaction", "handoff", "send", "wait", "structured-output"]>;
        readonly key: Schema.String;
        readonly input: Schema.Unknown;
        readonly replayPolicy: Schema.Literals<readonly ["pure", "provider-idempotent", "never"]>;
    }>>;
    readonly wait: Schema.optionalKey<Schema.Struct<{
        readonly waitId: Schema.String;
        readonly reason: Schema.String;
        readonly replayToken: Schema.optionalKey<Schema.String>;
    }>>;
    readonly suspensionToken: Schema.optionalKey<Schema.String>;
    readonly terminal: Schema.optionalKey<Schema.Struct<{
        readonly text: Schema.String;
        readonly turns: Schema.Finite;
    }>>;
}>;
/** @experimental */
export type LoopDriverState = typeof LoopDriverState.Type;
/** @internal The active call keeps its scheduled ordinal; safe checkpoints expose the next ordinal. */
export declare const modelCallOrdinal: (state: LoopDriverState) => number;