import { type DuckDBType, type DuckDBValue } from '@duckdb/node-api';
import { type AnyDuckDBValueWrapper } from './value-wrappers-core.ts';
/**
 * Converts one JS value to a node-api value. The optional type is the DuckDB
 * type the value is bound to, taken from a wrapper's element or value type.
 */
export type NodeApiValueConverter = (value: unknown, typeHint?: DuckDBType) => DuckDBValue;
/**
 * Convert a wrapper to a DuckDB Node API value.
 * Uses exhaustive switch for compile-time safety.
 */
export declare function wrapperToNodeApiValue(wrapper: AnyDuckDBValueWrapper, toValue: NodeApiValueConverter): DuckDBValue;
/**
 * Record the declared item type of a list, array or map value, for
 * typedNodeApiParam() to bind it with.
 */
export declare function withNodeApiItemTypeHint<T extends DuckDBValue>(value: T, itemType: DuckDBType | undefined): T;
/**
 * The type to bind a parameter with, when node-api's own inference would get
 * it wrong, and the value adjusted to that type. Returns undefined for values
 * node-api handles by itself.
 */
export declare function typedNodeApiParam(value: DuckDBValue): {
    value: DuckDBValue;
    type: DuckDBType;
} | undefined;
export { DUCKDB_VALUE_MARKER, isDuckDBWrapper, wrapArray, wrapBlob, wrapJson, wrapList, wrapMap, wrapStruct, wrapTimestamp, type AnyDuckDBValueWrapper, type DuckDBValueWrapper, type ArrayValueWrapper, type BlobValueWrapper, type JsonValueWrapper, type ListValueWrapper, type MapValueWrapper, type StructValueWrapper, type TimestampValueWrapper, type DuckDBValueKind, } from './value-wrappers-core.ts';