import { BaseDuckDBType } from './BaseDuckDBType';
import { DuckDBLogicalType } from '../DuckDBLogicalType';
import { DuckDBTypeId } from '../DuckDBTypeId';
import { Json } from '../Json';
export declare class DuckDBEnumType extends BaseDuckDBType<DuckDBTypeId.ENUM> {
    readonly values: readonly string[];
    readonly valueIndexes: Readonly<Record<string, number>>;
    readonly internalTypeId: DuckDBTypeId;
    constructor(values: readonly string[], internalTypeId: DuckDBTypeId, alias?: string);
    /**
     * The index of the given value in this enum.
     *
     * Throws if the value is not a member: storing an unknown value would
     * otherwise write index 0, silently substituting the enum's first member.
     */
    indexForValue(value: string): number;
    /**
     * Like toString, but bounded: an enum can have millions of members, and all of
     * them in an error message would bury the part that matters.
     */
    private toStringForError;
    toString(): string;
    toLogicalType(): DuckDBLogicalType;
    toJson(): Json;
}
export declare function ENUM8(values: readonly string[], alias?: string): DuckDBEnumType;
export declare function ENUM16(values: readonly string[], alias?: string): DuckDBEnumType;
export declare function ENUM32(values: readonly string[], alias?: string): DuckDBEnumType;
export declare function ENUM(values: readonly string[], alias?: string): DuckDBEnumType;