ReferenceError: primordials is not defined

Using node 12 and gulp 3. That combination does not work: https://github.com/gulpjs/gulp/issues/2324

```
$ npm run build

> kickstart@ build /Users/admejiar/Code/tmp/ampstart
> gulp build

fs.js:27
const { Math, Object } = primordials;
^

ReferenceError: primordials is not defined
at fs.js:27:26
```

I tried gulp 4 and getting different errors

Start by reproducing the failure with Node 12 using the reported `npm run build` command and inspect the gulp build entry point. Compare the result with the reported gulp 4 errors; done means the project build completes successfully on the supported Node and gulp versions.

Written by the indexing model from the issue text.