Babel 6 regeneratorRuntime is not defined

Question

I\'m trying to use async, await from scratch on Babel 6, but I\'m getting regeneratorRuntime is not defined.

.babelrc file

{
    \"presets\": [ \"es2         


        

Answer 1

for future reference :

As of Babel version 7.0.0-beta.55 stage presets have been removed

refer blog https://babeljs.io/blog/2018/07/27/removing-babels-stage-presets

async await can be still be used by

https://babeljs.io/docs/en/babel-plugin-transform-async-to-generator#usage

installation

npm install --save-dev @babel/plugin-transform-async-to-generator

usage in .babelrc

 { 
     "presets": ["@babel/preset-env"],
     "plugins": ["@babel/plugin-transform-async-to-generator"]
 }

and using babel polyfill https://babeljs.io/docs/en/babel-polyfill

installation

npm install --save @babel/polyfill

webpack.config.js

module.exports = {
  entry: ["@babel/polyfill", "./app/js"],
};