File System Access – Reading & Writing

File System Access – Reading & Writing

Electron provides app.getPath(name) to locate OS‑specific folders (userData, desktop, documents).

const { app } = require('electron');
const dataPath = app.getPath('userData');

Read a file (async):

const fs = require('fs').promises;
async function loadNotes(){
  const file = path.join(dataPath, 'notes.json');
  try {
    const raw = await fs.readFile(file, 'utf-8');
    return JSON.parse(raw);
  } catch(e){
    return [];
  }
}

Write a file:

async function saveNotes(notes){
  const file = path.join(dataPath, 'notes.json');
  await fs.writeFile(file, JSON.stringify(notes, null, 2), 'utf-8');
}

Show a dialog before overwriting:

const { dialog } = require('electron');
const { response } = await dialog.showMessageBox({
  type: 'question',
  buttons: ['Cancel', 'Overwrite'],
  defaultId: 1,
  title: 'Confirm',
  message: 'Overwrite existing file?'
});
if (response === 1) await saveNotes(notes);