import type { CollectOptions, CollectResult, CollectorAvailability, UsageCollector } from '../../models/usage-record.js';
export interface OpenCodeCursor {
    /** Per store path: the highest `message.time_updated` already ingested. */
    stores: Record<string, number>;
    /**
     * Per store path: the highest `session_message.time_updated` already ingested.
     * Absent in cursors written before OpenCode 2.x support, which reads as 0 and
     * so reads the table once from the start.
     */
    sessionMessages?: Record<string, number>;
}
/**
 * Reads token usage straight out of OpenCode's SQLite database.
 *
 * Grain: one record per assistant *message*.
 *
 * Why message grain and not the `session` rollup columns, which look more
 * convenient: on the machine this was developed against, the `message` table and
 * the independent `part` (step-finish) table agree byte-for-byte, while the
 * `session` rollup was stale for 4 sessions and lost 545,977 input tokens --
 * three of them recorded `tokens_input = 0` despite having real messages.
 * OpenCode's own `stats` command reads the rollup for its headline block but the
 * message grain for its per-model block, so the two halves of its output do not
 * agree with each other. Message grain is the corroborated number, and it is
 * also the only grain that attributes tokens to the right model when a session
 * switches models partway through. `ai-usage verify` reconciles all three grains.
 */
export declare class OpenCodeCollector implements UsageCollector {
    readonly name = "opencode";
    readonly client: "opencode";
    isAvailable(): Promise<CollectorAvailability>;
    collect(options: CollectOptions): Promise<CollectResult>;
    private collectStore;
}