`next/getting-started` doesn't work in NPM 6

[wjohnsto]

This needs to be investigated. NPM 7 works fine, but there appear to be runtime issues with NPM 6. If necessary we can specify the minimum NPM version in the package.json

[blakewilson]

This seems to have been fixed with the recent changes and migration in examples/next/getting-started.

I was able to successfully build the examples/next/getting-started example locally using Node v12 / NPM v6 as well as deploy to Vercel.

Once #283 is merged into canary this issue should be resolved.