/**
 * Minimal Linear GraphQL client for VINES.
 *
 * Two responsibilities:
 *   1. Mutations during the §3.2 workflow (create parent / child, comment,
 *      transition state).
 *   2. Reads during §4.2 recovery (fetch issue + list children).
 *
 * Uses the built-in `fetch` available in Node ≥20 (the package's engines
 * floor) — no third-party HTTP lib.
 */
import type { LinearIssue } from "./types.js";
export declare const LINEAR_GRAPHQL_ENDPOINT = "https://api.linear.app/graphql";
export interface LinearClientOptions {
    apiKey?: string;
    timeoutMs?: number;
    /** Test seam — defaults to the global `fetch`. */
    fetchImpl?: typeof globalThis.fetch;
}
/**
 * Thin GraphQL wrapper. All methods throw {@link Error} with a descriptive
 * message on API failure; the message always starts with `"Linear "` so the
 * CLI can distinguish Linear vs. database failures by prefix.
 */
export declare class LinearClient {
    private readonly apiKey;
    private readonly timeoutMs;
    private readonly fetchImpl;
    constructor(opts?: LinearClientOptions);
    query<T>(query: string, variables?: Record<string, unknown>): Promise<T>;
    createIssue(args: {
        teamId: string;
        title: string;
        description?: string;
        parentId?: string;
        stateId?: string;
    }): Promise<LinearIssue>;
    setState(issueId: string, stateId: string): Promise<void>;
    comment(issueId: string, body: string): Promise<void>;
    getIssue(identifierOrId: string): Promise<LinearIssue | null>;
    listChildren(parentIdentifierOrId: string): Promise<LinearIssue[]>;
}
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