/**
 * Engine schema loader — reads bundled JSON schemas from the data/ directory.
 *
 * Mirrors internal/engines/registry.go to provide TypeScript-side access to
 * all 33 engine parameter definitions. The JSON files are bundled with
 * the package so it works as a standalone npm package.
 */
export interface RangeKeys {
    start: string;
    end: string;
}
export interface FieldOption {
    value: any;
    label: string;
    children?: FieldOption[];
}
export interface Field {
    key: string;
    type: string;
    required: boolean;
    label: string;
    help: string;
    default_value: any;
    options: FieldOption[];
    range_keys?: RangeKeys;
}
export interface FieldGroup {
    key: string;
    title: string;
    collapsible: boolean;
    fields: Field[];
}
export interface EngineSchema {
    key: string;
    name: string;
    query_field: string;
    groups: FieldGroup[];
    category: string;
    is_default: boolean;
}
export interface EngineIndex {
    default_engine: string;
    count: number;
    categories: Array<{
        key: string;
        name: string;
        icon: string;
        engine_count: number;
    }>;
    engines: Array<{
        key: string;
        name: string;
        category: string;
        file: string;
    }>;
}
export declare class EngineRegistry {
    private _schemas;
    private _index;
    private _dataDir;
    constructor(dataDir?: string);
    private _load;
    private _parseEngineSchema;
    private _parseField;
    private _parseFieldOption;
    get defaultEngine(): string;
    get engineKeys(): string[];
    engine(key: string): EngineSchema | undefined;
    engines(): Map<string, EngineSchema>;
    categories(): Record<string, string[]>;
}
export declare function allFields(schema: EngineSchema): Field[];
export declare function fieldMap(schema: EngineSchema): Map<string, Field>;
export declare function requiredFields(schema: EngineSchema): Field[];
export declare function toParamSchema(schema: EngineSchema): Record<string, any>;
export declare function toDescription(schema: EngineSchema): string;
//# sourceMappingURL=schema.d.ts.map