electron/lib/browser/chrome-extension-shim.js

'use strict'

// This is a temporary shim to aid in transition from the old
// BrowserWindow-based extensions stuff to the new native-backed extensions
// API.

if (!process.electronBinding('features').isExtensionsEnabled()) {
  throw new Error('Attempted to load JS chrome-extension shim without //extensions support enabled')
}

const { app, session, BrowserWindow, deprecate } = require('electron')

app.whenReady().then(function () {
  const addExtension = function (srcDirectory) {
    return session.defaultSession.loadExtension(srcDirectory)
  }

  const removeExtension = function (name) {
    const extension = session.defaultSession.getAllExtensions().find(e => e.name === name)
    if (extension) { session.defaultSession.removeExtension(extension.id) }
  }

  const getExtensions = function () {
    const extensions = {}
    session.defaultSession.getAllExtensions().forEach(e => {
      extensions[e.name] = e
    })
    return extensions
  }

  BrowserWindow.addExtension = deprecate.moveAPI(addExtension, 'BrowserWindow.addExtension', 'session.loadExtension')
  BrowserWindow.removeExtension = deprecate.moveAPI(removeExtension, 'BrowserWindow.removeExtension', 'session.removeExtension')
  BrowserWindow.getExtensions = deprecate.moveAPI(getExtensions, 'BrowserWindow.getExtensions', 'session.getAllExtensions')
  BrowserWindow.addDevToolsExtension = deprecate.moveAPI(addExtension, 'BrowserWindow.addDevToolsExtension', 'session.loadExtension')
  BrowserWindow.removeDevToolsExtension = deprecate.moveAPI(removeExtension, 'BrowserWindow.removeDevToolsExtension', 'session.removeExtension')
  BrowserWindow.getDevToolsExtensions = deprecate.moveAPI(getExtensions, 'BrowserWindow.getDevToolsExtensions', 'session.getAllExtensions')
})