Blank Admin Page: regeneratorRuntime is not defined (babel?)

Questions and Answers
27

Here is the complete solution I used with our Strapi 4.0.7 build/deploy. I should mention that we never saw the issue until we tried to deploy to an Azure stack. This took us about 2 weeks to solve from the myriad of solutions out there! Hope this helps someone!!!

./npm/strapi/packages/core/admin/package.json
(Add the following to the dependencies)
"regenerator-runtime": "^0.13.9",

./npm/strapi/packages/core/admin/admin/src/index.js
(Add the following to the top)
import "regenerator-runtime/runtime.js";

.babelrc
.npm/strapi/packages/utils/babel-plugin-switch-ee-ce/.babelrc
(Replace code found with the following)

{
    "presets": [
    ["@babel/preset-env",
      {
        "targets": {
          "node": "14"
       },
        useBuiltIns: 'usage'
      }
    ]
  ],
    "plugins": ["@babel/plugin-transform-runtime",
      {
        "absoluteRuntime": false,
        "helpers": true,
        "regenerator": true
      }
    ]
}