import type { AgentBackend, BackendId, BackendRunContext, BackendRunResult, BackendTask } from './types.js';
/** Accumulator threaded through per-line parsing. */
export interface CliParsed {
    sessionId?: string;
    content?: string;
    isError?: boolean;
}
export interface CliBackendSpec {
    id: BackendId;
    displayName: string;
    /** Binary name looked up on PATH (overridable via `binEnv`). */
    bin: string;
    /** argv for a fresh run. `prompt` already includes any role preamble. */
    runArgs(prompt: string, task: BackendTask): string[];
    /** argv to continue an existing session with a new message. */
    resumeArgs?(sessionId: string, message: string, task: BackendTask): string[];
    /** Parse one output line (or the whole raw output, as a fallback) into `acc`. */
    parseLine(line: string, acc: CliParsed): void;
    /** Extra process env. */
    env?: NodeJS.ProcessEnv;
    /** Env var overriding the binary path (e.g. INFINICODE_CLAUDE_BIN). */
    binEnv?: string;
    /** Env var of extra whitespace-split args appended to every invocation. */
    extraArgsEnv?: string;
}
export declare class CliAgentBackend implements AgentBackend {
    private spec;
    readonly id: BackendId;
    readonly displayName: string;
    constructor(spec: CliBackendSpec);
    private resolveBin;
    /** A directly-spawnable target — on Windows unwraps the npm shim to the real
     *  executable so `spawn` (array args, no shell) works and multi-line prompts
     *  survive intact. */
    private resolveSpawn;
    available(): boolean;
    private extraArgs;
    run(task: BackendTask, ctx: BackendRunContext): Promise<BackendRunResult>;
    send(sessionId: string, message: string, ctx: BackendRunContext): Promise<BackendRunResult>;
    private exec;
}