@xid-kit/electron

Electron SDK with main process PKCE flow, contextBridge preload, OS keychain token storage, and loopback or custom-scheme callback strategies.

Status

Package status is Current package. Main process app, contextBridge preload, and renderer-side bridge are implemented. A real IdP round-trip on production infrastructure is still pending manual verification.

Entry points

Entry	Purpose
`@xid-kit/electron`	Default export: renderer surface and types
`@xid-kit/electron/main`	Main process only: XidElectronApp
`@xid-kit/electron/renderer`	Renderer process: getXidBridge, XidClient
`@xid-kit/electron/preload`	Ready-made preload script that exposes window.xidBridge

Main process setup

// main.ts
import { app, ipcMain } from 'electron'
import { XidElectronApp } from '@xid-kit/electron/main'

const xidApp = new XidElectronApp({
  issuer: 'https://xid.dev',
  clientId: 'client_abc123',
  // callbackStrategy: 'loopback' (default, RFC 8252 s.7.3) | 'custom-scheme'
})

app.whenReady().then(async () => {
  await xidApp.init(ipcMain)
  const win = new BrowserWindow({
    webPreferences: {
      contextIsolation: true,
      preload: path.join(__dirname, 'preload.js'),
    },
  })
  win.on('closed', () => xidApp.dispose(ipcMain))
})

Preload script

// preload.ts
import '@xid-kit/electron/preload'
// Exposes window.xidBridge with storage, signIn, signOut,
// getAccessToken, getSession, setTokenStorage

Renderer process

import { getXidBridge } from '@xid-kit/electron/renderer'

const bridge = getXidBridge()

// Opens system browser, waits for loopback callback, exchanges code.
const accessToken = await bridge.signIn()

// Get current access token (transparently refreshes if near expiry).
const token = await bridge.getAccessToken() // null when not signed in

// Get full session (accessToken + expiresAt in epoch seconds).
const session = await bridge.getSession()

// Sign out and clear tokens.
await bridge.signOut()

Custom scheme (alternative to loopback)

// main.ts
import { app } from 'electron'
import { XidElectronApp } from '@xid-kit/electron/main'

app.setAsDefaultProtocolClient('myapp')

const xidApp = new XidElectronApp({
  issuer: 'https://xid.dev',
  clientId: 'client_abc123',
  callbackStrategy: 'custom-scheme',
  customScheme: 'myapp',  // redirect_uri = myapp://callback
})

xidApp.registerDeepLinkHandler(app)

Token storage

Tokens are encrypted with safeStorage.encryptString() (OS keychain) and stored as binary files in app.getPath('userData')/xid-tokens/ by default.
If safeStorage.isEncryptionAvailable() returns false (headless Linux without a keyring), setItem() throws ElectronStorageError with code encryption_unavailable rather than writing plaintext silently.
Override the storage directory with storageDir in XidElectronMainOptions.

Shared native contract

Method	Description
`signIn(options?)`	Opens system browser, exchanges code, stores tokens
`signOut()`	Clears local tokens
`getAccessToken()`	Returns current token (refreshes if near expiry); null if signed out
`getSession()`	Returns accessToken and expiresAt, or null