import type { PluginConfig } from "./config";
import type { Logger } from "./logger";
import type { OpenCodeClient } from "./opencode-client";
import type { DtcState } from "./dtc/state";
interface StateDeps {
    state: DtcState;
    logger: Logger;
}
/** The verified host calls compacting immediately before the summary transform. */
export declare function createSessionCompactingHandler(deps: StateDeps): (input: {
    sessionID: string;
}, _output?: unknown) => Promise<void>;
/**
 * An empty/unidentified summary history cannot consume the skip. The later
 * compaction params call clears it without observing or changing model options.
 * If the host aborts before both hooks, the next identified transform skips once
 * and clears the flag; this loses no information and does not persist a mode.
 */
export declare function createChatParamsHandler(deps: StateDeps): (input: {
    sessionID: string;
    agent?: string;
}, _output?: unknown) => Promise<void>;
export interface TransformHandlerDeps extends StateDeps {
    client: OpenCodeClient;
    config: PluginConfig["dtc"];
}
/** Build a private projection, then commit only to prevalidated ordinary slots. */
export declare function createTransformHandler(deps: TransformHandlerDeps): (_input: unknown, output: {
    messages: unknown[];
}) => Promise<void>;
export declare function createEventHandler(deps: StateDeps): (input: {
    event: {
        type: string;
        properties?: Record<string, any>;
    };
}) => Promise<void>;
export {};
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