Yarn 2 and 3 PNP Support

[DavidArchibald]

It seems that ES6 style imports currently does not work with some combination of Gulp, Yarn 2/3, and ES6 imports. I can get this issue with the following steps:

$ npx @ghost-fvtt/foundry-factory -m yarn2 --default --type module --no-config test
$ cd test
$ yarn build

Got error:

Error [ERR_MODULE_NOT_FOUND]: Cannot find package 'fs-extra' imported from [path]/test/gulpfile.js
Did you mean to import fs-extra-npm-10.0.0-4f8c704115-5285a3d8f3.zip/node_modules/fs-extra/lib/index.js?
    at new NodeError (node:internal/errors:371:5)
    at packageResolve (node:internal/modules/esm/resolve:930:9)
    at moduleResolve (node:internal/modules/esm/resolve:976:18)
    at defaultResolve (node:internal/modules/esm/resolve:1078:11)
    at ESMLoader.resolve (node:internal/modules/esm/loader:530:30)
    at ESMLoader.getModuleJob (node:internal/modules/esm/loader:251:18)
    at ModuleWrap.<anonymous> (node:internal/modules/esm/module_job:79:40)
    at link (node:internal/modules/esm/module_job:78:36) {
  code: 'ERR_MODULE_NOT_FOUND'
}

The suggested import fs-extra-npm-10.0.0-4f8c704115-5285a3d8f3.zip seems to be clearly referring to the .yarn/cache file of the same name. It's somewhat peculiar it recognizes the PNP module exists. I tracked down this issue as well as this e2e test.

I currently have it working by converting it to .cjs and changing the imports to match.