can't resolve 'stream', 'crypto', 'fs': dependencies have issues with recent @angular/cli and webpack

[tim-tx]

Building my angular project after doing npm install sboljs, I see

WARNING in ./node_modules/sboljs/node_modules/readable-stream/readable.js
Module not found: Error: Can't resolve 'stream' in '/home/me/project/node_modules/sboljs/node_modules/readable-stream'

WARNING in ./node_modules/sboljs/node_modules/readable-stream/lib/_stream_readable.js
Module not found: Error: Can't resolve 'stream' in '/home/me/project/node_modules/sboljs/node_modules/readable-stream/lib'

WARNING in ./node_modules/sboljs/node_modules/readable-stream/lib/_stream_writable.js
Module not found: Error: Can't resolve 'stream' in '/home/me/project/node_modules/sboljs/node_modules/readable-stream/lib'

ERROR in ./node_modules/rdf-normalize/jsonld-normalize.js
Module not found: Error: Can't resolve 'crypto' in '/home/me/project/node_modules/rdf-normalize'
ERROR in ./node_modules/sboljs/node_modules/rdf-normalize/jsonld-normalize.js
Module not found: Error: Can't resolve 'crypto' in '/home/me/project/node_modules/sboljs/node_modules/rdf-normalize'
ERROR in ./node_modules/sboljs/lib/SBOLDocument.js
Module not found: Error: Can't resolve 'fs' in '/home/me/project/node_modules/sboljs/lib'
ERROR in ./node_modules/sboljs/node_modules/rdf-parser-rdfxml/node_modules/rdf-parser-dom/node_modules/rdf-parser-abstract/index.js
Module not found: Error: Can't resolve 'stream' in '/home/me/project/node_modules/sboljs/node_modules/rdf-parser-rdfxml/node_modules/rdf-parser-dom/node_modules/rdf-parser-abstract'
ERROR in ./node_modules/sboljs/node_modules/xml/lib/xml.js
Module not found: Error: Can't resolve 'stream' in '/home/me/project/node_modules/sboljs/node_modules/xml/lib'

There is some discussion here: web3/web3.js#1555

If you do npm install crypto, you are told that crypto is now a built-in module, and that packages importing it should use the built-in version. I think the situation is similar for 'stream' and 'fs'.

Apparently related to a larger rift in angular which doesn't expose its webpack config, preventing a fix: angular/angular-cli#10954

So the solution is a monkey-patch:
https://gist.github.com/niespodd/1fa82da6f8c901d1c33d2fcbb762947d

But perhaps some of the dependencies need updating.