Firebase功能部署可能的EventEmitter内存泄漏

Question

每次部署firebase函数时，都会在日志中为每个函数获取此信息：

（节点：2）警告：检测到可能的EventEmitter内存泄漏。添加了11个错误侦听器。使用generator.setMaxListeners（）增加限制

我的节点版本是 v8.1.3

这是我的package.json

{
  "name": "functions",
  "scripts": {
    "build": "./node_modules/.bin/tslint -p tslint.json && ./node_modules/.bin/tsc",
    "serve": "npm run build && firebase serve --only functions",
    "shell": "npm run build && firebase experimental:functions:shell",
    "start": "npm run shell",
    "deploy": "firebase deploy --non-interactive --token $FIREBASE_DEPLOY_KEY",
    "logs": "firebase functions:log"
  },
  "main": "lib/index.js",
  "dependencies": {
    "@google-cloud/storage": "^1.6.0",
    "@google-cloud/vision": "^0.15.2",
    "@sendgrid/mail": "^6.2.1",
    "@types/algoliasearch": "^3.24.9",
    "algoliasearch": "^3.24.9",
    "child-process-promise": "^2.2.1",
    "express": "^4.16.2",
    "firebase-admin": "^5.8.1",
    "firebase-functions": "^0.8.1",
    "jsonwebtoken": "^8.1.1",
    "lodash": "^4.17.5",
    "piexifjs": "^1.0.3",
    "rand-token": "^0.4.0",
    "raven": "^2.4.0",
    "raven-js": "^3.22.1",
    "request": "^2.83.0"
  },
  "devDependencies": {
    "tslint": "^5.8.0",
    "typescript": "^2.5.3"
  },
  "private": true
}

我所有的功能都可以正常工作，但是它接近生产时间，而且我不喜欢这种外观，有人知道它的含义吗？