import { URI } from '../model/uri';
/**
 * Cycle-detection stack shared by the embed and foam-query plugins. Callers
 * `enter` before invoking a markdown renderer for a resource and `exit`
 * after; if the resource is already on the stack, `enter` returns false and
 * the caller emits a cycle warning instead of recursing.
 */
export interface RenderContext {
    /** Returns false (without pushing) if `uri` is already on the stack. */
    enter(uri: URI): boolean;
    exit(uri: URI): void;
    has(uri: URI): boolean;
    /** Snapshot of the stack, deepest first. */
    current(): URI[];
}
export declare function createRenderContext(): RenderContext;
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