import { DuckDBType } from './DuckDBType';
import { ToDuckDBValueConverter } from './ToDuckDBValueConverter';
import { DuckDBBitValue, DuckDBBlobValue, DuckDBDateValue, DuckDBDecimalValue, DuckDBGeometryValue, DuckDBIntervalValue, DuckDBTimeNSValue, DuckDBTimeTZValue, DuckDBTimeValue, DuckDBTimestampMillisecondsValue, DuckDBTimestampNanosecondsValue, DuckDBTimestampSecondsValue, DuckDBTimestampTZValue, DuckDBTimestampValue, DuckDBUUIDValue, DuckDBValue, DuckDBVariantValue } from './values';
export declare function unwritableConverter(_: unknown, type: DuckDBType): never;
export declare function nullFromNull(): null;
export declare function valueFromBoolean(value: boolean): boolean;
export declare function valueFromNumber(value: number): number;
export declare function bigintFromNumeric(value: bigint | number): bigint;
export declare function valueFromString(value: string): string;
export declare function blobValueFromBytes(value: Uint8Array): DuckDBBlobValue;
export declare function bitValueFromBytes(value: Uint8Array): DuckDBBitValue;
export declare function geometryValueFromBytes(value: Uint8Array): DuckDBGeometryValue;
export declare function dateValueFromDate(value: Date): DuckDBDateValue;
export declare function timeValueFromMicros(value: bigint): DuckDBTimeValue;
export declare function timeNSValueFromNanos(value: bigint): DuckDBTimeNSValue;
export declare function timeTZValueFromObject(value: {
    micros: bigint;
    offset: number;
}): DuckDBTimeTZValue;
export declare function timestampValueFromDate(value: Date): DuckDBTimestampValue;
export declare function timestampTZValueFromDate(value: Date): DuckDBTimestampTZValue;
export declare function timestampSecondsValueFromDate(value: Date): DuckDBTimestampSecondsValue;
export declare function timestampMillisValueFromDate(value: Date): DuckDBTimestampMillisecondsValue;
export declare function timestampNanosValueFromDate(value: Date): DuckDBTimestampNanosecondsValue;
export declare function intervalValueFromObject(value: {
    months: number;
    days: number;
    micros: bigint;
}): DuckDBIntervalValue;
export declare function decimalValueFromNumeric(value: number | bigint, type: DuckDBType): DuckDBDecimalValue;
export declare function uuidValueFromString(value: string): DuckDBUUIDValue;
export declare function listValueFromArray<T>(value: readonly T[], type: DuckDBType, converter: ToDuckDBValueConverter<T>): DuckDBValue;
export declare function arrayValueFromArray<T>(value: readonly T[], type: DuckDBType, converter: ToDuckDBValueConverter<T>): DuckDBValue;
export declare function structValueFromObject<T>(value: Readonly<Record<string, T>>, type: DuckDBType, converter: ToDuckDBValueConverter<T>): DuckDBValue;
export declare function mapValueFromEntries<T>(value: readonly {
    key: T;
    value: T;
}[], type: DuckDBType, converter: ToDuckDBValueConverter<T>): DuckDBValue;
export declare function unionValueFromObject<T>(value: {
    tag: string;
    value: T;
}, type: DuckDBType, converter: ToDuckDBValueConverter<T>): DuckDBValue;
/**
 * A VARIANT carries the type of the value inside it, so writing one means
 * saying what that type is. A `DuckDBVariantValue` already does — pass it
 * through. A bare scalar does not, but is unambiguous enough for
 * `typeForValue` to infer downstream, so wrap it.
 */
export declare function variantValueFromJS(value: DuckDBVariantValue | boolean | number | bigint | string): DuckDBVariantValue;