title: NestJS + Angular project throws Module not found: Error: Can't resolve 'cache-manager'
body: <p>I have a NestJS backend (6.9.0) and Angular frontend project (8.2.11).
  I use concurrently to start the front end and backend in parallel in my localhost. </p>
  
  <p>The backend starts fine (starts faster) but when the Angular project starts compiling and when the compilation is ready it throws the following error:</p>
  
  <p>Any ideas why ? </p>
  
  <p>This has worked fine before, unfortunately I can not pinpoint exactly what changes caused this behavior. In NestJS I am not using the cli, I build it just with tsc.</p>
  
  <pre><code>WARNING in ../server/node_modules/@nestjs/common/utils/load-package.util.js 8:39-59
  Critical dependency: the request of a dependency is an expression
  
  ERROR in ../server/node_modules/@nestjs/common/cache/cache.providers.js
  Module not found: Error: Can't resolve 'cache-manager' in '/mnt/c/codes/salesforce-compare/server/node_modules/@nestjs/common/cache'
  ERROR in ../server/node_modules/@nestjs/common/pipes/validation.pipe.js
  Module not found: Error: Can't resolve 'class-transformer' in '/mnt/c/codes/salesforce-compare/server/node_modules/@nestjs/common/pipes'
  ERROR in ../server/node_modules/@nestjs/common/serializer/class-serializer.interceptor.js
  Module not found: Error: Can't resolve 'class-transformer' in '/mnt/c/codes/salesforce-compare/server/node_modules/@nestjs/common/serializer'
  ERROR in ../server/node_modules/@nestjs/common/pipes/validation.pipe.js
  Module not found: Error: Can't resolve 'class-validator' in '/mnt/c/codes/salesforce-compare/server/node_modules/@nestjs/common/pipes'
  </code></pre>