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1,349 PointsVersions of @angular/compiler-cli and typescript could not be determined.
Versions of @angular/compiler-cli and typescript could not be determined. The most common reason for this is a broken npm install.
Please make sure your package.json contains both @angular/compiler-cli and typescript in devDependencies, then delete node_modules and package-lock.json (if you have one) and run npm install again. I get this error when running build, help!