/**
 * Slim event bridge: maps AgentDriver events to rendered console lines.
 * No React, no ink, no UI state — just event → string → callback.
 */
import type { SessionState } from "@skaile/workspaces";
import type { AgentSession } from "@skaile/workspaces/runner";
import type { TelemetryLogEntry } from "./telemetry.js";
/**
 * Handle returned by {@link createReplSession} for controlling an active REPL session.
 *
 * `state` reflects the current lifecycle state (`idle`, `active`, or `stopped`).
 * Call `send(text)` to forward a user message to the agent driver; the state
 * transitions to `active` until the driver emits `agent_end`. Call `stop()` to
 * terminate the driver and dispose of the underlying agent session.
 *
 * @docLink packages/tui/concepts#repl-session
 */
export interface ReplSessionHandle {
    readonly state: SessionState;
    send(text: string): void;
    stop(): void;
}
/**
 * Options for {@link createReplSession}.
 *
 * @param session - The agent session returned by `createAgentSession`.
 * @param onLine - Callback invoked with an ANSI-rendered string for each output line.
 * @param onLog - Callback invoked with a log string for each telemetry event (if verbose).
 * @param onStateChange - Callback invoked whenever the session state changes.
 *
 * @docLink packages/tui/concepts#repl-session
 */
export interface CreateReplSessionOpts {
    session: AgentSession;
    onLine?: (line: string) => void;
    onLog?: (line: string) => void;
    onStateChange?: (state: SessionState) => void;
}
/**
 * Create a slim event bridge that maps `AgentEvent` stream to rendered console lines.
 *
 * Subscribes to `agent-event` on the session driver and converts each event type
 * (`message_update`, `tool_call`, `error`, `agent_end`, `turn_end`, `subagent`) to
 * an `OutputLine`, renders it via {@link renderLine}, and forwards the string to
 * `opts.onLine`. Text content is buffered internally and flushed line-by-line as
 * newlines arrive. Returns a {@link ReplSessionHandle} for sending messages and
 * stopping the session.
 *
 * @param opts - Session, output callbacks, and state-change hook.
 * @returns Handle for sending messages and observing session state.
 *
 * @docLink packages/tui/concepts#repl-session
 */
export declare function createReplSession(opts: CreateReplSessionOpts): ReplSessionHandle;
/**
 * Create a telemetry sink that pipes {@link TelemetryLogEntry} events to the log callback.
 *
 * Wraps {@link renderLog} so that only displayable entries (generation, span_end for
 * tool/turn, trace lifecycle) are forwarded. Entries that `renderLog` returns `null`
 * for are silently suppressed. The returned function is used in `startRepl` to drain
 * buffered telemetry and to wire up live forwarding during the session.
 *
 * @param onLog - Callback invoked with an ANSI-rendered log string.
 * @returns A function that accepts a `TelemetryLogEntry` and routes it to `onLog`.
 *
 * @docLink packages/tui/concepts#repl-session
 */
export declare function createTelemetrySink(onLog: (line: string) => void): (entry: TelemetryLogEntry) => void;
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