export type ContextLayer = 'L0' | 'L1' | 'L2' | 'L3';
export interface LayerPayload {
    readonly layer: ContextLayer;
    readonly description: string;
    readonly files: readonly {
        path: string;
        bytes: number;
    }[];
    readonly content: string;
    readonly byteSize: number;
    readonly warnings: readonly string[];
}
/** Dispatch one layer by its validated `L0|L1|L2|L3` id. */
export declare function fetchContextLayer(level: ContextLayer, projectRoot: string, query: string): Promise<LayerPayload>;
export declare function isContextLayer(value: string): value is ContextLayer;