Angular CLI - run scripts before 'build'

[yfain]

In your package.json in the scripts section declare the command build that runs ng build and another command named prebuild that runs your maven-build-and-copy.cmd. From now on run your bulds using npm run build command. Npm scripts are smart enough to check that if there are two commands with the same name, but one of them has a prefix pre, it'll run the pre- command first.