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 removed tslib.js from package.json
• Removed package-lock.json
• Deleted node_modules folder
• npm i
• ng serve

Worked for me