Angular 9 - NGCC fails with an unhandled exception

Question

Buidling the application after having upgraded dependcies to Angular 9 (and having performed necessary code changes) throws an error:

Compiling @ang

Answer 1

I generally advise people to make a manual backup of the project after every succeded deployment (locally) because, when you face this kind of problem (everything related to NGCC errors) you can just hard delete node_modules folder and restore it from you last backup. and then build again.

Sometimes, when you cannot afford updating nodeJS to the last version, this solution would be perfect.