ssn/src/inflateFile.ts

import * as fs from 'fs';
import * as zlib from 'zlib';

const fileReadStream = fs.createReadStream('/tmp/patcher/Assets/swtor_de-de_area_alderaan_1.tor');

const decompressTransform = zlib.createInflateRaw();
decompressTransform.on('error', (error) => {
  //TODO: need to throw error sync, not async
  throw new Error(`Error during decompression: ${error.message}`);
});

const fileWriteStream = fs.createWriteStream('/tmp/patcher/Assets/swtor_de-de_area_alderaan_1.tor.raw');

fileReadStream.pipe(decompressTransform).pipe(fileWriteStream);