JavaScriptでtar.bz2で圧縮されたファイルを展開する

import fs from 'fs';
import tar from 'tar';
import bz2 from 'unbzip2-stream';

function extractTarBz2(filePath: string, outputPath: string) {
  const inputStream = fs.createReadStream(filePath); 
  const bz2Stream = bz2();

  inputStream.pipe(bz2Stream).pipe(tar.x({C: outputPath}));

  bz2Stream.on('error', function() {
    console.log('Error extracting tar.bzip2 file');
  });

  tar.x({C: outputPath}).on('end', function() {
    console.log('Extraction complete!');
  }); 
}

extractTarBz2('data.tar.bz2', 'output');

クラス版

import fs from 'fs';
import tar from 'tar';
import bz2 from 'unbzip2-stream';

class Extractor {
  private filePath: string;
  private outputPath: string;

  constructor(filePath: string, outputPath: string) {
    this.filePath = filePath;
    this.outputPath = outputPath;
  }

  public extract() {
    const inputStream = fs.createReadStream(this.filePath); 
    const bz2Stream = bz2();

    inputStream.pipe(bz2Stream).pipe(tar.x({C: this.outputPath}));

    bz2Stream.on('error', function() {
      console.log('Error extracting tar.bzip2 file');
    });

    tar.x({C: this.outputPath}).on('end', function() {
      console.log('Extraction complete!');
    }); 
  }
}

const extractor = new Extractor('data.tar.bz2', 'output');
extractor.extract();