Error while building/serving using anything above npm 16.

[caliguian]

It's been several years since this tutorial was created, and something in the code may need to be updated to allow it to build with current versions of npm. When I try to build or serve the app, the following error is thrown (yarn and npm throw the same error):

opensslErrorStack: [ 'error:03000086:digital envelope routines::initialization error', 'error:0308010C:digital envelope routines::unsupported' ], library: 'digital envelope routines', reason: 'unsupported', code: 'ERR_OSSL_EVP_UNSUPPORTED'

When looking this error up, I found that it is caused by a breaking change in npm versions 17+. Switching to npm 16 resolved the issue for me, but I think the app should be updated so that others don't run into the same problem.