text: 'use strict'
  
  const { app, session } = require('electron')
  
  // Global protocol APIs.
  module.exports = process.atomBinding('protocol')
  
  // Fallback protocol APIs of default session.
  Object.setPrototypeOf(module.exports, new Proxy({}, {
    get (target, property) {
      if (!app.isReady()) return
  
      const protocol = session.defaultSession.protocol
      if (!Object.getPrototypeOf(protocol).hasOwnProperty(property)) return
  
      // Returning a native function directly would throw error.
      return (...args) => protocol[property](...args)
    },
  
    ownKeys () {
      if (!app.isReady()) return []
  
      return Object.getOwnPropertyNames(Object.getPrototypeOf(session.defaultSession.protocol))
    },
  
    getOwnPropertyDescriptor (target) {
      return { configurable: true, enumerable: true }
    }
  }))
  