/// <reference types="node" />
export interface ReadParquetOptionsCommon {
    /** The list of columns to read */
    columns?: string[];
    /** Specifies for each input file, which row groups to read. */
    rowGroups?: number[][];
    /** The number of rows to skip from the start of the file */
    skipRows?: number;
    /** The total number of rows to read */
    numRows?: number;
    /** Return string columns as GDF_CATEGORY dtype (default 'false') */
    stringsToCategorical?: boolean;
    /**
     * If true and dataset has custom PANDAS schema metadata, ensure that index columns are also
     * loaded (default 'true').
     */
    usePandasMetadata?: boolean;
}
export interface ReadParquetFileOptions extends ReadParquetOptionsCommon {
    sourceType: 'files';
    sources: string[];
}
export interface ReadParquetBufferOptions extends ReadParquetOptionsCommon {
    sourceType: 'buffers';
    sources: (Uint8Array | Buffer)[];
}
export declare type ReadParquetOptions = ReadParquetFileOptions | ReadParquetBufferOptions;
export interface WriteParquetOptions {
    /** The name of compression to use (default 'snappy'). */
    compression?: 'snappy' | 'none';
    /** Write timestamps in int96 format (default 'false'). */
    int96Timestamps?: boolean;
}
export interface TableWriteParquetOptions extends WriteParquetOptions {
    /** Column names to write in the header. */
    columnNames?: string[];
}
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