import { CompressionType, Table } from "@uwdata/flechette";
import type { CompressionType_, ExtractionOptions } from "@uwdata/flechette";
import type { LogicalType } from "./logical-types";
import type { QuackDataChunk } from "./vector";
/** Flechette extraction options accepted by Quack Arrow helpers. */
export interface QuackArrowOptions extends ExtractionOptions {
}
/** Explicit DuckDB logical types for Arrow columns, by index or column name. */
export type QuackArrowDuckTypeSchema = readonly LogicalType[] | Record<string, LogicalType>;
/** Options for converting Quack chunks into a Flechette Arrow table. */
export interface QuackArrowTableOptions extends QuackArrowOptions {
    /** DuckDB logical types to use when chunks are empty or types should be overridden. */
    duckTypes?: readonly LogicalType[];
}
/** Options for encoding Quack results as Arrow IPC bytes. */
export interface QuackArrowIPCOptions extends QuackArrowTableOptions {
    /** Arrow IPC output format. Defaults to Flechette's stream format. */
    format?: "stream" | "file";
    /** Optional Flechette compression codec id. */
    codec?: CompressionType_ | null;
}
/** Options for converting Arrow input into Quack append chunks. */
export interface QuackArrowAppendOptions extends QuackArrowOptions {
    /** DuckDB logical types to use instead of inferring from Arrow schema metadata. */
    duckTypes?: QuackArrowDuckTypeSchema;
}
/** Arrow IPC input accepted by Flechette. */
export type QuackArrowIPCInput = ArrayBufferLike | Uint8Array | Uint8Array[];
/** Arrow input accepted by append helpers. */
export type QuackArrowInput = Table | QuackArrowIPCInput;
/** Re-export Flechette's compression enum for callers using Arrow IPC compression. */
export { CompressionType };
/** Re-export Flechette's Arrow table class for public SDK type narrowing. */
export { Table as ArrowTable };
/** Convert one Quack DataChunk into a Flechette Arrow table. */
export declare function arrowTableFromDataChunk(chunk: QuackDataChunk, columnNames?: string[] | undefined, options?: QuackArrowTableOptions): Table;
/** Convert Quack DataChunks into one Flechette Arrow table. */
export declare function arrowTableFromChunks(chunks: readonly QuackDataChunk[], columnNames?: readonly string[], options?: QuackArrowTableOptions): Table;
/** Convert Quack DataChunks into Arrow IPC bytes. */
export declare function arrowIPCFromChunks(chunks: readonly QuackDataChunk[], columnNames?: readonly string[], options?: QuackArrowIPCOptions): Uint8Array;
/** Encode a Flechette Arrow table as Arrow IPC bytes. */
export declare function arrowIPCFromTable(table: Table, options?: QuackArrowIPCOptions): Uint8Array;
/** Convert Arrow IPC bytes into Quack append chunks. */
export declare function dataChunksFromArrowIPC(input: QuackArrowIPCInput, options?: QuackArrowAppendOptions): QuackDataChunk[];
/** Convert a Flechette Arrow table into Quack append chunks. */
export declare function dataChunksFromArrowTable(table: Table, options?: QuackArrowAppendOptions): QuackDataChunk[];
/** Convert either a Flechette table or Arrow IPC bytes into Quack append chunks. */
export declare function dataChunksFromArrow(input: QuackArrowInput, options?: QuackArrowAppendOptions): QuackDataChunk[];