import { BaseDuckDBType } from './BaseDuckDBType';
import type { DuckDBType } from './DuckDBType';
import { DuckDBLogicalType } from '../DuckDBLogicalType';
import { DuckDBTypeId } from '../DuckDBTypeId';
import { Json } from '../Json';
export declare class DuckDBStructType extends BaseDuckDBType<DuckDBTypeId.STRUCT> {
    readonly entryNames: readonly string[];
    readonly entryTypes: readonly DuckDBType[];
    readonly entryIndexes: Readonly<Record<string, number>>;
    constructor(entryNames: readonly string[], entryTypes: readonly DuckDBType[], alias?: string);
    get entryCount(): number;
    indexForEntry(entryName: string): number;
    typeForEntry(entryName: string): DuckDBType;
    toString(): string;
    toLogicalType(): DuckDBLogicalType;
    toJson(): Json;
}
export declare function STRUCT(entries: Record<string, DuckDBType>, alias?: string): DuckDBStructType;