@dobesv/parquets/src/codec/declare.ts

TypeScript implementation of the Parquet file format, based on parquet.js

import { ParquetValueArray, PrimitiveType } from '../declare';

export interface CursorBuffer {
  buffer: Buffer;
  offset: number;
  size?: number;
}

export interface ParquetCodecOptions {
  bitWidth?: number;
  disableEnvelope?: boolean;
  typeLength?: number;
}

export interface ParquetCodecKit {
  encodeValues(
    type: PrimitiveType,
    values: ParquetValueArray,
    opts?: ParquetCodecOptions
  ): Buffer;
  decodeValues(
    type: PrimitiveType,
    cursor: CursorBuffer,
    count: number,
    opts: ParquetCodecOptions
  ): ParquetValueArray;
}