Reading data in Electron Render Process

[martin-loland]

Hello, I was wondering what is the recommended approach (or if it's even possible) to read data from parquet file in the render process of an Electron app?

Working in main process

import { readFileSync } from 'node:fs';
const parquet = require('@dsnp/parquetjs');

export async function readParquet(filePath: string) {
  const buffer = readFileSync(filePath);
  const reader = await parquet.ParquetReader.openBuffer(buffer);
  const meta = reader.getMetadata();
  console.log(meta);
}

Not working in render process

import parquetjs from '@dsnp/parquetjs/dist/browser/parquetjs.esm'

const buffer = window.electronAPI.fs.readFileSync(f);
console.log('Expecting PAR1:', new TextDecoder().decode(buffer.slice(0, 4)));
const reader = await parquetjs.ParquetReader.openBuffer(buffer);
const meta = reader.getMetadata();
console.log(meta);

Logs:

Expecting PAR1: PAR1
not valid parquet file