node.js 异步等待 - 错误 regeneratorRuntime

Question

I learnt how to use promises in a browser but when I want to use it in my node.js it throw error.

 var _ref = _asyncToGenerator( /*#__PURE__*/regeneratorRuntime.mark(function _callee(url) {
                                           ^
ReferenceError: regeneratorRuntime is not defined

node version

v10.4.1

I use babel for export and import syntax with settings like here in starting file

require('babel-register')({ 
    presets: [ 'env' ]
})

Answer 1

I was unable to use async/await and for me this worked out.

In your babel file include this.

presets: [
    [
      "@babel/preset-env",
      {
        "targets": {
          "node": "10"
        }
      }
    ]  ]

Answer 2

babel-polyfill is required. You must also install it in order to get async/await working.

Here explain better Babel 6 regeneratorRuntime is not defined

Answer 3

Presumably you are trying to use async / await syntax? You will need to install transform-async-to-generator plugin and include it in your Babel config

require('babel-register')({
  presets: ['env'],
  plugins: ['transform-async-to-generator']
})