I used to have Angular CLI, but I mistakenly installed it again with npm install -g angular-cli And now when I run ng serve it complains: It seems like you're using a project generated using an old version of the Angular CLI. The latest CLI now uses webpack and includes a lot of improvements, include a simpler workflow, a faster build and smaller bundles. To get more info, including a step-by-step guide to upgrade the CLI, follow this link: https://github.com/angular/angular-cli/wiki/Upgrading-from-Beta.10-to-Beta.12 When I try to create a new project using ng new in another directory, it complains that: Cannot find module 'reflect-metadata' So what is the problem? Continue reading...
